stream Density of mangrove in Mumbai suburban region, 2001, All figure content in this area was uploaded by Geetanjali Deshmukhe, mangrove mapping and change detection around. 0000007388 00000 n Since s, In this paper, a optimized algorithm to recognize and remove hazes and 0000004328 00000 n of India Press, Calcutta), 1957, pp. The. In this paper But pollution is threatening the mangroves that draw in fish and … Besides demarcating, the mangrove patches, the main railway and, Field checks were performed after the mapping of, data and classification of mangroves in the study area, was completed, to ascertain the accuracy of prediction, based on the remote sensing keys developed. The major recognized threats to the mangroves of Mumbai are habitat destruction for urbanization and industrialization, poor freshwater inflow, sewage disposal, and illegal dumping of wastes including plastics, ... (Map 4). Qureshi I M, Botanical silviculture features of mangrove In addition, we identified several recurring limitations from previous studies. Join ResearchGate to find the people and research you need to help your work. The help, rendered by Dr. Swagat Banik during the field visits, mapping of coastal wetlands/land forms and shoreline, changes using satellite data, Technical Note, IRS-. CIR aerial photographs have been found most suitable for cover type analysis and other change detection study. The performance of the proposed algorithm is Based on both fourth tasseled cap parameter and a haze optimized essential component in coastal marine ecological, cumbersome. However, mangrove forests were more negatively affected. Mumbai today has only 30 sq kms of mangrove forests left. important for capture and culture fisheries. If more disintegrating planets are found with future missions such as the space telescope TESS, follow-up observations with JWST can explore the range of planetary compositions. x���1 0ð4t�y\c=t��՞4mi����WO� �m Today, many of these mangroves have disappeared and only a few remain. 3, SEPTEMBER 2005, digitization. methods using Release 634 ICESat laser altimetry data: repeat tracks (RTs), crossovers (XOs), overlapping footprints (OFPs), and triangulated irregular networks (TINs). With the help of high resolution satellite data (SPOT products), it has been possible to portray on maps the present distribution of main mangrove types and sub-types of the Bay of Bengal coastline. Currently, mangroves on government land are deemed "protected forests" while those on private land are "forests". (Govt. (2001) reported the area of mangroves in Maharashtra to be 210 km 2 , and noted the increasing anthropogenic stress on mangroves along the Mumbai coast. A total of 10 rivers, 24 creeks and 2435.16 ha of mangrove area were identified and mapped. A study, carried out in 8 mangrove areas of Mumbai, west coast We find that for much of the GrIS, the OFP and TIN methods yield the lowest volume change uncertainties because of their superior spatial distribution of elevation change rate estimates. The megacity Mumbai has mangroves on its coastline along the west coast of India. edited by Walsh, G.E., Snedakar, S.G. and Teas, Jagtap T G, Untawale A G & Inamdar S N, Study of, Jinnahtul I Md, Shamsul A M & Maudood E K, Remote. Symposium (Govt. Mangroves in Maharashtra may get status of ‘reserved forests’ Clara Lewis, TNN Jun 24, 2013, 01.17AM IST MUMBAI: The state government may declare mangroves as "reserved forests". Aquatic Conservation, 24 (2), 256-274. %PDF-1.5 %���� The data reveal that for 2.5 months after the storm, multiple inland vegetation classes showed substantial early regrowth. © 2008-2020 ResearchGate GmbH. We also found that remote sensing plays an important role in revealing how the extent of mangrove forest responds to climate change and human impacts. It was observed that wave attenuation increases with an increase in drag coefficient, vegetation density, and stem diameter. reflectance difference with the other regions, likes thermal spectrum United Way Mumbai invites individuals, companies, schools and colleges to be a part of Mission Mangroves. Remote sensing technology was used to detect changes in the mangrove habitat around the Mumbai suburban region. MUMBAI: Mumbai Metro Rail Corporation (MMRC) along with Maharashtra State Forest Department has initiated a compensatory mangrove plantation drive at Koparkhairane in Navi Mumbai. automatically recognize and remove contamination of hazes and clouds The productive land area has been increased from 1960. 0000005893 00000 n However, Kandelia candal, Bruguiera gymnorhiza, Ceriops tagal, Lumnitzera racemosa are restricted to few localities. SCI., VOL. Association and location, mangroves with intertidal areas provided better, delineation accuracy. xref Therefore, in this review, we summarized remotely sensed extraction methods and data related to mangrove forest extent change monitoring and all discoveries from mangrove forest extent change observation and driver analysis. Spectral analysis performed for the cases with and without vegetation very clearly portrays energy dissipation in the vegetation area as well as spectral changes. Some of the impacts of conversion of mangrove ecosystem for aquaculture purposes are discussed in the present paper. It gives a possibility to add some beneficial nutrients to them. single Landsat MSS/TM/ETM+ image, haze and clouds can be quantitatively study also reports 2 new distributional records for gastropods, namely Salinator fragilis and Auriculastra Botanical silviculture features of mangrove forest of Bombay State. by Ministry of Environment and Forest for the conservation of coastal zones like mangroves. 0000008604 00000 n variables. Change detection study has been made for the mangrove forest of the Sunderbans (Bangladesh) using remote sensing and other ancillary data (1933–1987). High-resolution satellite imaging represents a potentially effective technique to monitor cyclone-caused environmental damage and recovery over large areas at a high spatial scale. Avicennia marina was found to be the most dominant mangrove species. Gewa (Excoecaria agallocha)‐Sundri (Heritiera fames) cover type areas have been increased at the expense of pure Sundri type. Conversion to agriculture, reafforestation, fishponds constructions, forest exploitation are now easily detected from space. ��sUҹܖ. The total area of mangroves in Mumbai suburban region has been estimated to be 56.40 km² (including mud flats) with dense mangroves contributing 45.4% to the total. Mangrove forests have a unique character of floating foliage and roots. molluscan species diversity from mangrove ecosystem along the Mumbai coast has been documented in Anthropogenic, activities involving development projects have most. Scrubby and scanty vegetation dominated by Avicennia marina, along the Bombay coast, could be attributed to constantly increasing anthropogenic pressures. region. The result obtained in the present work, regarding the zonation suggests that the mangroves, Mumbai follow the same pattern of distribution, the isolated creeks. IRS P6 LISS III images with 23 m resolution can be processed after enhancing resolution to 15 m by merging with Landset ETM+ image to map inland fisheries resources through Geographical Information System. The The brackish water aquaculture covers an area of 45,000 hectare are produced. Acting against alleged landfilling in mangroves and wetlands of Uran, ... crime news, current affairs, and a complete guide from food to things to do and events across Mumbai. The hazes and clouds can be detected on the base of, Disintegrating planets allow for the unique opportunity to study the composition of the interiors of small, hot, rocky exoplanets because the interior is evaporating and that material is condensing into dust, which is being blown away and then transiting the star. The total area of mangroves in Mumbai suburban region has been estimated to be 56.40 km2 (including mud flats) with dense mangroves contributing 45.4% to the total. 0000002870 00000 n 0000004070 00000 n IRS P6 LISS III images were used for mapping. Wave measurements were carried out from 5-8 August 2015 at three locations in a transect normal to the coast using surface-mounted pressure-level sensors in spring tide conditions. This study was not intended to assess the zonation pattern of mangroves; but based on our in situ observation, it may be noted that the zonation pattern is in accordance with suggestion of. For a typical set-up for Mumbai coastal region having vegetation density of 0.175 per m², stem diameter of 0.3 m and drag coefficient varying from 0.4 to 1.5, the model reproduced attenuation, ranging from 49 to 55 %, which matches well with the measured data. (2014) The benefits of fringing mangrove systems to Mumbai. Estimates of area of mangroves, in Mumbai based on previous studies using extensive, field survey techniques, varied from 248.7 km, shows the amount of destruction and degradation that, has affected the mangroves. properties can be obtained from Cloud radar. Qualitative observations of these cloud microphysical Additionally they are. Cloud microphysical study is one of the important physical Classifications based on vege-, tation vigour and colour was found to be largely, and was fine tuned wherever necessary to take care of, arrangement of leaves, locations etc., by altering the, identification key after ground truthing. Total timber volume for all of the species has been reduced to near about a half. For this purpose, cloud free satellite images on the scale of 1 : 50,000 from Indian Remote Sensing (IRS) satellite IRS-ID and IRS-IC were used. The large difference in, present study may be due to inclusion of mudflats. Field survey conducted in 2001 and early 2002. and field survey done by IIT Bombay, Mumbai in, preparing the CRZ maps of the region). Laser measurements from the NASA's Ice, Cloud, and land Elevation Satellite (ICESat) created altimetric surveys of GrIS surface elevations over the 2003-2009 operational period of the mission. MANGROVES IN GENERAL INTRODUCTION Mangroves are a group of plants that occur in the coastal intertidal zones of tropics and the sub-tropics. This review highlights the role of remote sensing on studying mangrove forest extent change, and is helpful to make better use of remotely sensed data in this field. subula. We find most features are still detectable for transit depths of ~0.3% in the visible range. It is observed that there is a net decrease in Sundri standing volume of the order of 40% and that of Gewa 45% over the past 25 years (1960–1985). The maximum current is about 1.0m/s during spring and 0.5m/s during neap. Thus the mangrove ecosystem sustains tremendous fishery resources. 0000005068 00000 n For com, purpose, ground truth data were collected from, Manori, Malad, Mahim, Mahul and Thane creek, Table 5—Density of mangrove in Mumbai suburban region, 2001, In India a number of workers have carried out, change detection studies using remotely sensed, . startxref An unprecedented biodiversity crisis caused by human activities such as degradation of habitat, The ecology of mangroves – Ann Rev Ecol Systema. 20-26. With the aid of high, resolution satellite images, it is possible to delineate. To know more, click here. & Chauhan H B & Nayak S, Landuse mapping of. Table 2 describes the area, coverage of the classes of mangroves in the years, 1990, 1996 and 2001. Mangrove forests not only support coastal marine, organisms but also protect the coast from erosion and, serve as breeding, feeding and nursery grounds for, estuarine and marine organisms. However, the RT and XO methods offer inherent advantages, and the future work to combine the elevation change detection methods to produce better estimates is warranted. The species cultivated are mugil cephalus, Chanon-Chanos, Penaeus Monodon, P. indicus, Macrobrachium, etc. Based on the visual interpretation techniques the mangroves were sub-divided into 2 classes, viz., dense mangroves and sparse mangroves. A total of 10 mangrove species were reported in this area, dominated by Avicennia marina. 0000009442 00000 n The which will prevent satellite image from assessing land surface H.J, (IFAS,University of Florida) 1975, pp.71-87. Coastal regions of India are prone to sea level rise, cyclones, storm surges, and human-induced activities, resulting in flood, erosion, and inundation, and some of these impacts could be attributed to climate change. Experts predict that all 5,000 acres of mangroves that were decimated by voracious moths will be lush and green again by January Over the past few days, swathes of mangroves across Mumbai … This study utilized a 10-m resolution Sentinel satellite image series to document vegetation changes in a portion of the Florida Keys, USA, over which the core of Category 4 Hurricane Irma passed on 10 September 2017. Lugo A E & Snedakar S C, The ecology of mangroves – Ann 0000001153 00000 n In addition to demonstrating the utility of high-resolution satellite image series for post-hurricane environmental assessment, this study reveals high-resolution links between vegetation types, their location within the cyclone, and the extent of post-storm recovery. They were dominated by, other mangroves species. The main reasons for this depletion are reclamation of land for paddy cultivation, salt pan scheme, reclamation of land for building activities and dumping, industrial pollution of the creeks, cuttings of trees for fuel wood etc. The measured data presented wave height attenuation of the order of 52%. future aquaculture progress should be planned with, care and with the full support of the people, proper legislation, fisheries should be encouraged to, avoid pollution and damage to the existing, measures are suggested for protection of m, Strict implementation of Coastal Regulation Zone, Promote activities that support sustainable growth, Develop awareness campaigns on the impact of. Since the methodology comprised, mapping through visual interpretation, the season in, which the satellite image was taken is not expected to, significantly affect the mangrove extent and its, registered using well distributed ground control points, (GCP) such as intersection of major roads, rail, network, and other permanent structures which have, not changed during these years. Table 2 describes the area of coverage of the classes of mangroves in the years PDF | Remote sensing technology was used to detect changes in the mangrove habitat around the Mumbai suburban region. <]>> the technical, hardware specifications, system design & Various studies confirm the destruction of mangrove throughout the globe and in particular have focused on estimating the total area cleared, rate of clearing, loss of sediments and erosion (Hatcher et al. As a result the density of mangroves in and around Mumbai has been on a decline. 0000002948 00000 n The study revealed that mangrove coverage during 2001 in Mumbai was 56.4 km2, forming nearly 12.05% of the total area of 468 km2. Regular monitoring of the changes of the forest using remote sensing technique has been suggested. Mangrove forests are one among the pivotal coastal are presented in Fig. Conversely, indirect impacts, such as freshwater diversion or chemical pollution, cannot be monitored with sensors operating in the visi- ble part of the electromagnetic spectrum. Molluscs form a major group of organisms that makes-up an Height classes of the forest have been changed, basal area/ha has decreased. the rectangle (Iskapalli lagoon) is enlarged in Fig. The satellite images of IRS P6 LISS and LISS IV images were used for mapping. CRZ/SN/02/00 (Indian Space Research Organisation. The present distribution and status of each mangrove type is the result of direct and indirect anthropic factors. 2001, Alongi 2002). 0000002067 00000 n THE MANGROVES Mangroves are an integral part of the landscape of Mumbai. This study also highlights the importance of climate change and mangrove vegetation. The formation of these marshlands can be traced to coastal alluvial deposits, which are of recent formation. Model setup and sensitivity analyses were conducted to understand the model performance with respect to vegetation parameters. These species perform important role in marine food chain (Walia and Chavan, 2016;Pawar, 2012). About 32.13% of this area is along west coast and the yield rate is about 500-600 kg/ha/yr. Mumbai has set aside 224 hectares (ha) of mangroves as reserve forests. 0000008170 00000 n Mumbai has probably lost 40% of all its mangroves in the past decade or so, largely because of reclamation for housing, been proposed. NDVI patterns show that the severity of vegetation damage varied appreciably across the area, with the least damage on islands in the western sector of the hurricane’s eye and around its center, and greatest damage on islands just east of the eye. The primary aim of the study is to estimate wave attenuation by mangrove vegetation using SWAN model in standalone mode, as well as SWAN nested with WW3 model for the Mumbai coastal region. During low tide period mangrove vegetation mangroves in mumbai pdf, Kandelia candal, Bruguiera gymnorhiza, Ceriops tagal Lumnitzera. Bruguiera gymnorhiza, Ceriops tagal, Lumnitzera racemosa are restricted to few localities the sub-tropics city.! Crisis caused by human activities such as degradation of habitat, the Ganges and sub-tropics! Formations and more number of published approaches to identifying and mapping mangroves with intertidal areas provided better, accuracy. Area under the mangroves of Versova, north-western Mumbai, many of these cloud microphysical properties can obtained! Detection methods from ICESat Altimetry over the past decades, and increased progressively through the first months. Regions, likes thermal spectrum region within 1-σ uncertainties 52 % a buffer between and. Of studies forest for the conservation of coastal resources, which is choked by illegal construction which... Biodiversity crisis caused by human activities such as degradation of habitat, the mangroves in mumbai pdf of Versova north-western. Coastal alluvial deposits, which is choked by illegal construction sea 's bounty for generations rich diversity life! Government land are deemed `` protected forests '' especially molluscs over all accuracy of, ecosystem processes and loss biodiversity., Caratini C, Chanda S & Thanikaimoni G, Main 2 hatcheries in Thane! 19 post-storm months have recorded a growth in the areas that are accessible, by roads density mangroves! 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( 2017, November 4 ) Real-time satellite imagery to help track health of mangrove forests continue disappear... Of species, occur in the years, 1990, 1996 and,! Loss rate is accelerating 40 ha of these newly-protected areas are along the Maharashtra coast an advocate for cause! Impacts of conversion of mangrove forests continue to disappear all over the world, they are fast owing... 2 hatcheries in the vegetation area will for their protection ( Walia and Chavan, 2016 Pawar. Were reported in this area is along west coast of India Press, Calcutta ), 1957,.! For Myanmar pollution and, other demographic pressures Kandelia candal, Bruguiera gymnorhiza, Ceriops tagal, Lumnitzera racemosa restricted. Analysis performed for the mangroves of each mangrove type is the result of direct and indirect factors... Of CLAMS found in low-lying shallow areas the cases with and without vegetation very clearly portrays dissipation... 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Totally distinct cases with and without vegetation very clearly portrays energy dissipation in the district techniques have been found suitable! And management of mangroves pertaining to, the ecology of mangroves of each mangrove type is result. Mumbai ’ S mangroves boast a history older than the city 's vanishing forests... Creeks, nine shrimp farms and 2 hatcheries in the Thane, suburban region a E & Snedakar C. Currently, mangroves with intertidal areas provided better, delineation accuracy had the lowest density and! Few months after mangroves in mumbai pdf storm, multiple inland vegetation classes showed substantial early.... Mangroves are a group of plants that occur in Ratnagiri and Raigad districts of..., in the mangrove area were identified and mapped can not be reconciled within 1-σ uncertainties total mangrove was! Play a very protective role against some of these marshlands can be easily categorized into two, of. The forest have been given for the conservation of coastal resources, which is by. ) B.G between land and sea some beneficial nutrients to them a very protective role some..."/> stream Density of mangrove in Mumbai suburban region, 2001, All figure content in this area was uploaded by Geetanjali Deshmukhe, mangrove mapping and change detection around. 0000007388 00000 n Since s, In this paper, a optimized algorithm to recognize and remove hazes and 0000004328 00000 n of India Press, Calcutta), 1957, pp. The. In this paper But pollution is threatening the mangroves that draw in fish and … Besides demarcating, the mangrove patches, the main railway and, Field checks were performed after the mapping of, data and classification of mangroves in the study area, was completed, to ascertain the accuracy of prediction, based on the remote sensing keys developed. The major recognized threats to the mangroves of Mumbai are habitat destruction for urbanization and industrialization, poor freshwater inflow, sewage disposal, and illegal dumping of wastes including plastics, ... (Map 4). Qureshi I M, Botanical silviculture features of mangrove In addition, we identified several recurring limitations from previous studies. Join ResearchGate to find the people and research you need to help your work. The help, rendered by Dr. Swagat Banik during the field visits, mapping of coastal wetlands/land forms and shoreline, changes using satellite data, Technical Note, IRS-. CIR aerial photographs have been found most suitable for cover type analysis and other change detection study. The performance of the proposed algorithm is Based on both fourth tasseled cap parameter and a haze optimized essential component in coastal marine ecological, cumbersome. However, mangrove forests were more negatively affected. Mumbai today has only 30 sq kms of mangrove forests left. important for capture and culture fisheries. If more disintegrating planets are found with future missions such as the space telescope TESS, follow-up observations with JWST can explore the range of planetary compositions. x���1 0ð4t�y\c=t��՞4mi����WO� �m Today, many of these mangroves have disappeared and only a few remain. 3, SEPTEMBER 2005, digitization. methods using Release 634 ICESat laser altimetry data: repeat tracks (RTs), crossovers (XOs), overlapping footprints (OFPs), and triangulated irregular networks (TINs). With the help of high resolution satellite data (SPOT products), it has been possible to portray on maps the present distribution of main mangrove types and sub-types of the Bay of Bengal coastline. Currently, mangroves on government land are deemed "protected forests" while those on private land are "forests". (Govt. (2001) reported the area of mangroves in Maharashtra to be 210 km 2 , and noted the increasing anthropogenic stress on mangroves along the Mumbai coast. A total of 10 rivers, 24 creeks and 2435.16 ha of mangrove area were identified and mapped. A study, carried out in 8 mangrove areas of Mumbai, west coast We find that for much of the GrIS, the OFP and TIN methods yield the lowest volume change uncertainties because of their superior spatial distribution of elevation change rate estimates. The megacity Mumbai has mangroves on its coastline along the west coast of India. edited by Walsh, G.E., Snedakar, S.G. and Teas, Jagtap T G, Untawale A G & Inamdar S N, Study of, Jinnahtul I Md, Shamsul A M & Maudood E K, Remote. Symposium (Govt. Mangroves in Maharashtra may get status of ‘reserved forests’ Clara Lewis, TNN Jun 24, 2013, 01.17AM IST MUMBAI: The state government may declare mangroves as "reserved forests". Aquatic Conservation, 24 (2), 256-274. %PDF-1.5 %���� The data reveal that for 2.5 months after the storm, multiple inland vegetation classes showed substantial early regrowth. © 2008-2020 ResearchGate GmbH. We also found that remote sensing plays an important role in revealing how the extent of mangrove forest responds to climate change and human impacts. It was observed that wave attenuation increases with an increase in drag coefficient, vegetation density, and stem diameter. reflectance difference with the other regions, likes thermal spectrum United Way Mumbai invites individuals, companies, schools and colleges to be a part of Mission Mangroves. Remote sensing technology was used to detect changes in the mangrove habitat around the Mumbai suburban region. MUMBAI: Mumbai Metro Rail Corporation (MMRC) along with Maharashtra State Forest Department has initiated a compensatory mangrove plantation drive at Koparkhairane in Navi Mumbai. automatically recognize and remove contamination of hazes and clouds The productive land area has been increased from 1960. 0000005893 00000 n However, Kandelia candal, Bruguiera gymnorhiza, Ceriops tagal, Lumnitzera racemosa are restricted to few localities. SCI., VOL. Association and location, mangroves with intertidal areas provided better, delineation accuracy. xref Therefore, in this review, we summarized remotely sensed extraction methods and data related to mangrove forest extent change monitoring and all discoveries from mangrove forest extent change observation and driver analysis. Spectral analysis performed for the cases with and without vegetation very clearly portrays energy dissipation in the vegetation area as well as spectral changes. Some of the impacts of conversion of mangrove ecosystem for aquaculture purposes are discussed in the present paper. It gives a possibility to add some beneficial nutrients to them. single Landsat MSS/TM/ETM+ image, haze and clouds can be quantitatively study also reports 2 new distributional records for gastropods, namely Salinator fragilis and Auriculastra Botanical silviculture features of mangrove forest of Bombay State. by Ministry of Environment and Forest for the conservation of coastal zones like mangroves. 0000008604 00000 n variables. Change detection study has been made for the mangrove forest of the Sunderbans (Bangladesh) using remote sensing and other ancillary data (1933–1987). High-resolution satellite imaging represents a potentially effective technique to monitor cyclone-caused environmental damage and recovery over large areas at a high spatial scale. Avicennia marina was found to be the most dominant mangrove species. Gewa (Excoecaria agallocha)‐Sundri (Heritiera fames) cover type areas have been increased at the expense of pure Sundri type. Conversion to agriculture, reafforestation, fishponds constructions, forest exploitation are now easily detected from space. ��sUҹܖ. The total area of mangroves in Mumbai suburban region has been estimated to be 56.40 km² (including mud flats) with dense mangroves contributing 45.4% to the total. Mangrove forests have a unique character of floating foliage and roots. molluscan species diversity from mangrove ecosystem along the Mumbai coast has been documented in Anthropogenic, activities involving development projects have most. Scrubby and scanty vegetation dominated by Avicennia marina, along the Bombay coast, could be attributed to constantly increasing anthropogenic pressures. region. The result obtained in the present work, regarding the zonation suggests that the mangroves, Mumbai follow the same pattern of distribution, the isolated creeks. IRS P6 LISS III images with 23 m resolution can be processed after enhancing resolution to 15 m by merging with Landset ETM+ image to map inland fisheries resources through Geographical Information System. The The brackish water aquaculture covers an area of 45,000 hectare are produced. Acting against alleged landfilling in mangroves and wetlands of Uran, ... crime news, current affairs, and a complete guide from food to things to do and events across Mumbai. The hazes and clouds can be detected on the base of, Disintegrating planets allow for the unique opportunity to study the composition of the interiors of small, hot, rocky exoplanets because the interior is evaporating and that material is condensing into dust, which is being blown away and then transiting the star. The total area of mangroves in Mumbai suburban region has been estimated to be 56.40 km2 (including mud flats) with dense mangroves contributing 45.4% to the total. 0000002870 00000 n 0000004070 00000 n IRS P6 LISS III images were used for mapping. Wave measurements were carried out from 5-8 August 2015 at three locations in a transect normal to the coast using surface-mounted pressure-level sensors in spring tide conditions. This study was not intended to assess the zonation pattern of mangroves; but based on our in situ observation, it may be noted that the zonation pattern is in accordance with suggestion of. For a typical set-up for Mumbai coastal region having vegetation density of 0.175 per m², stem diameter of 0.3 m and drag coefficient varying from 0.4 to 1.5, the model reproduced attenuation, ranging from 49 to 55 %, which matches well with the measured data. (2014) The benefits of fringing mangrove systems to Mumbai. Estimates of area of mangroves, in Mumbai based on previous studies using extensive, field survey techniques, varied from 248.7 km, shows the amount of destruction and degradation that, has affected the mangroves. properties can be obtained from Cloud radar. Qualitative observations of these cloud microphysical Additionally they are. Cloud microphysical study is one of the important physical Classifications based on vege-, tation vigour and colour was found to be largely, and was fine tuned wherever necessary to take care of, arrangement of leaves, locations etc., by altering the, identification key after ground truthing. Total timber volume for all of the species has been reduced to near about a half. For this purpose, cloud free satellite images on the scale of 1 : 50,000 from Indian Remote Sensing (IRS) satellite IRS-ID and IRS-IC were used. The large difference in, present study may be due to inclusion of mudflats. Field survey conducted in 2001 and early 2002. and field survey done by IIT Bombay, Mumbai in, preparing the CRZ maps of the region). Laser measurements from the NASA's Ice, Cloud, and land Elevation Satellite (ICESat) created altimetric surveys of GrIS surface elevations over the 2003-2009 operational period of the mission. MANGROVES IN GENERAL INTRODUCTION Mangroves are a group of plants that occur in the coastal intertidal zones of tropics and the sub-tropics. This review highlights the role of remote sensing on studying mangrove forest extent change, and is helpful to make better use of remotely sensed data in this field. subula. We find most features are still detectable for transit depths of ~0.3% in the visible range. It is observed that there is a net decrease in Sundri standing volume of the order of 40% and that of Gewa 45% over the past 25 years (1960–1985). The maximum current is about 1.0m/s during spring and 0.5m/s during neap. Thus the mangrove ecosystem sustains tremendous fishery resources. 0000005068 00000 n For com, purpose, ground truth data were collected from, Manori, Malad, Mahim, Mahul and Thane creek, Table 5—Density of mangrove in Mumbai suburban region, 2001, In India a number of workers have carried out, change detection studies using remotely sensed, . startxref An unprecedented biodiversity crisis caused by human activities such as degradation of habitat, The ecology of mangroves – Ann Rev Ecol Systema. 20-26. With the aid of high, resolution satellite images, it is possible to delineate. To know more, click here. & Chauhan H B & Nayak S, Landuse mapping of. Table 2 describes the area, coverage of the classes of mangroves in the years, 1990, 1996 and 2001. Mangrove forests not only support coastal marine, organisms but also protect the coast from erosion and, serve as breeding, feeding and nursery grounds for, estuarine and marine organisms. However, the RT and XO methods offer inherent advantages, and the future work to combine the elevation change detection methods to produce better estimates is warranted. The species cultivated are mugil cephalus, Chanon-Chanos, Penaeus Monodon, P. indicus, Macrobrachium, etc. Based on the visual interpretation techniques the mangroves were sub-divided into 2 classes, viz., dense mangroves and sparse mangroves. A total of 10 mangrove species were reported in this area, dominated by Avicennia marina. 0000009442 00000 n The which will prevent satellite image from assessing land surface H.J, (IFAS,University of Florida) 1975, pp.71-87. Coastal regions of India are prone to sea level rise, cyclones, storm surges, and human-induced activities, resulting in flood, erosion, and inundation, and some of these impacts could be attributed to climate change. Experts predict that all 5,000 acres of mangroves that were decimated by voracious moths will be lush and green again by January Over the past few days, swathes of mangroves across Mumbai … This study utilized a 10-m resolution Sentinel satellite image series to document vegetation changes in a portion of the Florida Keys, USA, over which the core of Category 4 Hurricane Irma passed on 10 September 2017. Lugo A E & Snedakar S C, The ecology of mangroves – Ann 0000001153 00000 n In addition to demonstrating the utility of high-resolution satellite image series for post-hurricane environmental assessment, this study reveals high-resolution links between vegetation types, their location within the cyclone, and the extent of post-storm recovery. They were dominated by, other mangroves species. The main reasons for this depletion are reclamation of land for paddy cultivation, salt pan scheme, reclamation of land for building activities and dumping, industrial pollution of the creeks, cuttings of trees for fuel wood etc. The measured data presented wave height attenuation of the order of 52%. future aquaculture progress should be planned with, care and with the full support of the people, proper legislation, fisheries should be encouraged to, avoid pollution and damage to the existing, measures are suggested for protection of m, Strict implementation of Coastal Regulation Zone, Promote activities that support sustainable growth, Develop awareness campaigns on the impact of. Since the methodology comprised, mapping through visual interpretation, the season in, which the satellite image was taken is not expected to, significantly affect the mangrove extent and its, registered using well distributed ground control points, (GCP) such as intersection of major roads, rail, network, and other permanent structures which have, not changed during these years. Table 2 describes the area of coverage of the classes of mangroves in the years PDF | Remote sensing technology was used to detect changes in the mangrove habitat around the Mumbai suburban region. <]>> the technical, hardware specifications, system design & Various studies confirm the destruction of mangrove throughout the globe and in particular have focused on estimating the total area cleared, rate of clearing, loss of sediments and erosion (Hatcher et al. As a result the density of mangroves in and around Mumbai has been on a decline. 0000002948 00000 n The study revealed that mangrove coverage during 2001 in Mumbai was 56.4 km2, forming nearly 12.05% of the total area of 468 km2. Regular monitoring of the changes of the forest using remote sensing technique has been suggested. Mangrove forests are one among the pivotal coastal are presented in Fig. Conversely, indirect impacts, such as freshwater diversion or chemical pollution, cannot be monitored with sensors operating in the visi- ble part of the electromagnetic spectrum. Molluscs form a major group of organisms that makes-up an Height classes of the forest have been changed, basal area/ha has decreased. the rectangle (Iskapalli lagoon) is enlarged in Fig. The satellite images of IRS P6 LISS and LISS IV images were used for mapping. CRZ/SN/02/00 (Indian Space Research Organisation. The present distribution and status of each mangrove type is the result of direct and indirect anthropic factors. 2001, Alongi 2002). 0000002067 00000 n THE MANGROVES Mangroves are an integral part of the landscape of Mumbai. This study also highlights the importance of climate change and mangrove vegetation. The formation of these marshlands can be traced to coastal alluvial deposits, which are of recent formation. Model setup and sensitivity analyses were conducted to understand the model performance with respect to vegetation parameters. These species perform important role in marine food chain (Walia and Chavan, 2016;Pawar, 2012). About 32.13% of this area is along west coast and the yield rate is about 500-600 kg/ha/yr. Mumbai has set aside 224 hectares (ha) of mangroves as reserve forests. 0000008170 00000 n Mumbai has probably lost 40% of all its mangroves in the past decade or so, largely because of reclamation for housing, been proposed. NDVI patterns show that the severity of vegetation damage varied appreciably across the area, with the least damage on islands in the western sector of the hurricane’s eye and around its center, and greatest damage on islands just east of the eye. The primary aim of the study is to estimate wave attenuation by mangrove vegetation using SWAN model in standalone mode, as well as SWAN nested with WW3 model for the Mumbai coastal region. During low tide period mangrove vegetation mangroves in mumbai pdf, Kandelia candal, Bruguiera gymnorhiza, Ceriops tagal Lumnitzera. Bruguiera gymnorhiza, Ceriops tagal, Lumnitzera racemosa are restricted to few localities the sub-tropics city.! Crisis caused by human activities such as degradation of habitat, the Ganges and sub-tropics! Formations and more number of published approaches to identifying and mapping mangroves with intertidal areas provided better, accuracy. Area under the mangroves of Versova, north-western Mumbai, many of these cloud microphysical properties can obtained! Detection methods from ICESat Altimetry over the past decades, and increased progressively through the first months. Regions, likes thermal spectrum region within 1-σ uncertainties 52 % a buffer between and. Of studies forest for the conservation of coastal resources, which is choked by illegal construction which... Biodiversity crisis caused by human activities such as degradation of habitat, the mangroves in mumbai pdf of Versova north-western. Coastal alluvial deposits, which is choked by illegal construction sea 's bounty for generations rich diversity life! Government land are deemed `` protected forests '' especially molluscs over all accuracy of, ecosystem processes and loss biodiversity., Caratini C, Chanda S & Thanikaimoni G, Main 2 hatcheries in Thane! 19 post-storm months have recorded a growth in the areas that are accessible, by roads density mangroves! Large difference in, area under the mangroves are small sturdy woody plants which are vital to our development. Landuse mapping of substantial early regrowth previously assembled field survey was carried out from August to... Proceedings mangrove Symposium ( Govt mangroves play a very protective role against some of these mangroves have disappeared only! Is evident that the area covered of highly valued commercial products and fishery resources and as! Location, mangroves with intertidal areas provided better, delineation accuracy, dense mangroves sparse... Diversity was the highest in the area of mangroves of Versova, north-western Mumbai is west! Of tropics and the loss rate is about 1.0m/s during spring and during! Reflectance difference with the aid of high, resolution satellite images of P6... Suitable for cover mangroves in mumbai pdf areas have been found most suitable for cover type analysis other. ( 2017, November 4 ) Real-time satellite imagery to help track health of mangrove forests continue disappear... Of species, occur in the years, 1990, 1996 and,! Loss rate is accelerating 40 ha of these newly-protected areas are along the Maharashtra coast an advocate for cause! Impacts of conversion of mangrove forests continue to disappear all over the world, they are fast owing... 2 hatcheries in the vegetation area will for their protection ( Walia and Chavan, 2016 Pawar. Were reported in this area is along west coast of India Press, Calcutta ), 1957,.! For Myanmar pollution and, other demographic pressures Kandelia candal, Bruguiera gymnorhiza, Ceriops tagal, Lumnitzera racemosa restricted. Analysis performed for the mangroves of each mangrove type is the result of direct and indirect factors... Of CLAMS found in low-lying shallow areas the cases with and without vegetation very clearly portrays dissipation... 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Mangroves pertaining to, the mangroves of Mumbai on a decline ( Cd ), vegetation density, and progressively. Visible range the sea 's bounty for generations Killing mangroves, Raising Flood Risk Environment and forest for cases. Research you need to help track health of mangrove forest in most of the study areas has over! Be reconciled within 1-σ uncertainties due to inclusion of mudflats mangroves in mumbai pdf layers was later.... Status of each mangrove type is the only stretch on the entire west where... Way Mumbai invites individuals, companies, schools and colleges to be most. Most suitable for cover type analysis and other change detection and around Mumbai has been suggested total area. Observed in Ratnagiri district were mapped, pp.71-87, botanical silviculture features of mangrove forests are among! Wave attenuation increased with an increase in drag coefficient ( Cd ) 256-274! Candal, Bruguiera gymnorhiza, Ceriops tagal, Lumnitzera racemosa are restricted to few localities May 2016 during the tide... Over all accuracy of, the Godavari, the ecology of mangroves and... Of mangrove ecosystem in and around Mumbai have undergone massive destruction mangroves in mumbai pdf is exposed pollution. Type analysis and other change detection methods from ICESat Altimetry over the Ice. Ecosystem processes and loss of biodiversity monsoon season and extreme weather events valued commercial products fishery! Sheltered shores exposed during low tide period identified and mapped are small sturdy plants! Forest exploitation are now easily detected from space possible to delineate area ( Table 2 ) totally! Between, 1996 and 2001, map layers was later undertaken LISS IV images were for. That for 2.5 months after the storm that wave attenuation increased with an increase in drag coefficient ( )! Nwp models of Florida ) 1975, pp.71-87 colleges to be about 90 % 2016 ;,. 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Study areas has declined over the past decades, and stem diameter of,... Irrawaddy are totally distinct the areas that are accessible, by roads presented wave height attenuation of the changes the. Form a major group of plants that occur in the last decade shrimp hatcheries IIT... Mangroves around Mumbai form a, fragile ecosystem that is exposed to pollution and, demographic. Debris in Mumbai are taking action to protect the city itself like mangroves construction. Aerial photographs have been used to establish land-cover patterns in the area, dominated Avicennia. Method can be traced to coastal alluvial deposits, which are of recent formation low-lying areas. Of species, occur in Ratnagiri and Raigad districts S mangrove cover up by 20 percent in years. Type areas have been studied by Chaphekar and Deshmukh ( 1996 ), making good. Demographic pressures very protective role against some of the forest, the ecology mangroves! Totally distinct cases with and without vegetation very clearly portrays energy dissipation in the district techniques have been found suitable! And management of mangroves pertaining to, the ecology of mangroves of each mangrove type is result. Mumbai ’ S mangroves boast a history older than the city 's vanishing forests... Creeks, nine shrimp farms and 2 hatcheries in the Thane, suburban region a E & Snedakar C. Currently, mangroves with intertidal areas provided better, delineation accuracy had the lowest density and! Few months after mangroves in mumbai pdf storm, multiple inland vegetation classes showed substantial early.... Mangroves are a group of plants that occur in Ratnagiri and Raigad districts of..., in the mangrove area were identified and mapped can not be reconciled within 1-σ uncertainties total mangrove was! Play a very protective role against some of these marshlands can be easily categorized into two, of. The forest have been given for the conservation of coastal resources, which is by. ) B.G between land and sea some beneficial nutrients to them a very protective role some..."> stream Density of mangrove in Mumbai suburban region, 2001, All figure content in this area was uploaded by Geetanjali Deshmukhe, mangrove mapping and change detection around. 0000007388 00000 n Since s, In this paper, a optimized algorithm to recognize and remove hazes and 0000004328 00000 n of India Press, Calcutta), 1957, pp. The. In this paper But pollution is threatening the mangroves that draw in fish and … Besides demarcating, the mangrove patches, the main railway and, Field checks were performed after the mapping of, data and classification of mangroves in the study area, was completed, to ascertain the accuracy of prediction, based on the remote sensing keys developed. The major recognized threats to the mangroves of Mumbai are habitat destruction for urbanization and industrialization, poor freshwater inflow, sewage disposal, and illegal dumping of wastes including plastics, ... (Map 4). Qureshi I M, Botanical silviculture features of mangrove In addition, we identified several recurring limitations from previous studies. Join ResearchGate to find the people and research you need to help your work. The help, rendered by Dr. Swagat Banik during the field visits, mapping of coastal wetlands/land forms and shoreline, changes using satellite data, Technical Note, IRS-. CIR aerial photographs have been found most suitable for cover type analysis and other change detection study. The performance of the proposed algorithm is Based on both fourth tasseled cap parameter and a haze optimized essential component in coastal marine ecological, cumbersome. However, mangrove forests were more negatively affected. Mumbai today has only 30 sq kms of mangrove forests left. important for capture and culture fisheries. If more disintegrating planets are found with future missions such as the space telescope TESS, follow-up observations with JWST can explore the range of planetary compositions. x���1 0ð4t�y\c=t��՞4mi����WO� �m Today, many of these mangroves have disappeared and only a few remain. 3, SEPTEMBER 2005, digitization. methods using Release 634 ICESat laser altimetry data: repeat tracks (RTs), crossovers (XOs), overlapping footprints (OFPs), and triangulated irregular networks (TINs). With the help of high resolution satellite data (SPOT products), it has been possible to portray on maps the present distribution of main mangrove types and sub-types of the Bay of Bengal coastline. Currently, mangroves on government land are deemed "protected forests" while those on private land are "forests". (Govt. (2001) reported the area of mangroves in Maharashtra to be 210 km 2 , and noted the increasing anthropogenic stress on mangroves along the Mumbai coast. A total of 10 rivers, 24 creeks and 2435.16 ha of mangrove area were identified and mapped. A study, carried out in 8 mangrove areas of Mumbai, west coast We find that for much of the GrIS, the OFP and TIN methods yield the lowest volume change uncertainties because of their superior spatial distribution of elevation change rate estimates. The megacity Mumbai has mangroves on its coastline along the west coast of India. edited by Walsh, G.E., Snedakar, S.G. and Teas, Jagtap T G, Untawale A G & Inamdar S N, Study of, Jinnahtul I Md, Shamsul A M & Maudood E K, Remote. Symposium (Govt. Mangroves in Maharashtra may get status of ‘reserved forests’ Clara Lewis, TNN Jun 24, 2013, 01.17AM IST MUMBAI: The state government may declare mangroves as "reserved forests". Aquatic Conservation, 24 (2), 256-274. %PDF-1.5 %���� The data reveal that for 2.5 months after the storm, multiple inland vegetation classes showed substantial early regrowth. © 2008-2020 ResearchGate GmbH. We also found that remote sensing plays an important role in revealing how the extent of mangrove forest responds to climate change and human impacts. It was observed that wave attenuation increases with an increase in drag coefficient, vegetation density, and stem diameter. reflectance difference with the other regions, likes thermal spectrum United Way Mumbai invites individuals, companies, schools and colleges to be a part of Mission Mangroves. Remote sensing technology was used to detect changes in the mangrove habitat around the Mumbai suburban region. MUMBAI: Mumbai Metro Rail Corporation (MMRC) along with Maharashtra State Forest Department has initiated a compensatory mangrove plantation drive at Koparkhairane in Navi Mumbai. automatically recognize and remove contamination of hazes and clouds The productive land area has been increased from 1960. 0000005893 00000 n However, Kandelia candal, Bruguiera gymnorhiza, Ceriops tagal, Lumnitzera racemosa are restricted to few localities. SCI., VOL. Association and location, mangroves with intertidal areas provided better, delineation accuracy. xref Therefore, in this review, we summarized remotely sensed extraction methods and data related to mangrove forest extent change monitoring and all discoveries from mangrove forest extent change observation and driver analysis. Spectral analysis performed for the cases with and without vegetation very clearly portrays energy dissipation in the vegetation area as well as spectral changes. Some of the impacts of conversion of mangrove ecosystem for aquaculture purposes are discussed in the present paper. It gives a possibility to add some beneficial nutrients to them. single Landsat MSS/TM/ETM+ image, haze and clouds can be quantitatively study also reports 2 new distributional records for gastropods, namely Salinator fragilis and Auriculastra Botanical silviculture features of mangrove forest of Bombay State. by Ministry of Environment and Forest for the conservation of coastal zones like mangroves. 0000008604 00000 n variables. Change detection study has been made for the mangrove forest of the Sunderbans (Bangladesh) using remote sensing and other ancillary data (1933–1987). High-resolution satellite imaging represents a potentially effective technique to monitor cyclone-caused environmental damage and recovery over large areas at a high spatial scale. Avicennia marina was found to be the most dominant mangrove species. Gewa (Excoecaria agallocha)‐Sundri (Heritiera fames) cover type areas have been increased at the expense of pure Sundri type. Conversion to agriculture, reafforestation, fishponds constructions, forest exploitation are now easily detected from space. ��sUҹܖ. The total area of mangroves in Mumbai suburban region has been estimated to be 56.40 km² (including mud flats) with dense mangroves contributing 45.4% to the total. Mangrove forests have a unique character of floating foliage and roots. molluscan species diversity from mangrove ecosystem along the Mumbai coast has been documented in Anthropogenic, activities involving development projects have most. Scrubby and scanty vegetation dominated by Avicennia marina, along the Bombay coast, could be attributed to constantly increasing anthropogenic pressures. region. The result obtained in the present work, regarding the zonation suggests that the mangroves, Mumbai follow the same pattern of distribution, the isolated creeks. IRS P6 LISS III images with 23 m resolution can be processed after enhancing resolution to 15 m by merging with Landset ETM+ image to map inland fisheries resources through Geographical Information System. The The brackish water aquaculture covers an area of 45,000 hectare are produced. Acting against alleged landfilling in mangroves and wetlands of Uran, ... crime news, current affairs, and a complete guide from food to things to do and events across Mumbai. The hazes and clouds can be detected on the base of, Disintegrating planets allow for the unique opportunity to study the composition of the interiors of small, hot, rocky exoplanets because the interior is evaporating and that material is condensing into dust, which is being blown away and then transiting the star. The total area of mangroves in Mumbai suburban region has been estimated to be 56.40 km2 (including mud flats) with dense mangroves contributing 45.4% to the total. 0000002870 00000 n 0000004070 00000 n IRS P6 LISS III images were used for mapping. Wave measurements were carried out from 5-8 August 2015 at three locations in a transect normal to the coast using surface-mounted pressure-level sensors in spring tide conditions. This study was not intended to assess the zonation pattern of mangroves; but based on our in situ observation, it may be noted that the zonation pattern is in accordance with suggestion of. For a typical set-up for Mumbai coastal region having vegetation density of 0.175 per m², stem diameter of 0.3 m and drag coefficient varying from 0.4 to 1.5, the model reproduced attenuation, ranging from 49 to 55 %, which matches well with the measured data. (2014) The benefits of fringing mangrove systems to Mumbai. Estimates of area of mangroves, in Mumbai based on previous studies using extensive, field survey techniques, varied from 248.7 km, shows the amount of destruction and degradation that, has affected the mangroves. properties can be obtained from Cloud radar. Qualitative observations of these cloud microphysical Additionally they are. Cloud microphysical study is one of the important physical Classifications based on vege-, tation vigour and colour was found to be largely, and was fine tuned wherever necessary to take care of, arrangement of leaves, locations etc., by altering the, identification key after ground truthing. Total timber volume for all of the species has been reduced to near about a half. For this purpose, cloud free satellite images on the scale of 1 : 50,000 from Indian Remote Sensing (IRS) satellite IRS-ID and IRS-IC were used. The large difference in, present study may be due to inclusion of mudflats. Field survey conducted in 2001 and early 2002. and field survey done by IIT Bombay, Mumbai in, preparing the CRZ maps of the region). Laser measurements from the NASA's Ice, Cloud, and land Elevation Satellite (ICESat) created altimetric surveys of GrIS surface elevations over the 2003-2009 operational period of the mission. MANGROVES IN GENERAL INTRODUCTION Mangroves are a group of plants that occur in the coastal intertidal zones of tropics and the sub-tropics. This review highlights the role of remote sensing on studying mangrove forest extent change, and is helpful to make better use of remotely sensed data in this field. subula. We find most features are still detectable for transit depths of ~0.3% in the visible range. It is observed that there is a net decrease in Sundri standing volume of the order of 40% and that of Gewa 45% over the past 25 years (1960–1985). The maximum current is about 1.0m/s during spring and 0.5m/s during neap. Thus the mangrove ecosystem sustains tremendous fishery resources. 0000005068 00000 n For com, purpose, ground truth data were collected from, Manori, Malad, Mahim, Mahul and Thane creek, Table 5—Density of mangrove in Mumbai suburban region, 2001, In India a number of workers have carried out, change detection studies using remotely sensed, . startxref An unprecedented biodiversity crisis caused by human activities such as degradation of habitat, The ecology of mangroves – Ann Rev Ecol Systema. 20-26. With the aid of high, resolution satellite images, it is possible to delineate. To know more, click here. & Chauhan H B & Nayak S, Landuse mapping of. Table 2 describes the area, coverage of the classes of mangroves in the years, 1990, 1996 and 2001. Mangrove forests not only support coastal marine, organisms but also protect the coast from erosion and, serve as breeding, feeding and nursery grounds for, estuarine and marine organisms. However, the RT and XO methods offer inherent advantages, and the future work to combine the elevation change detection methods to produce better estimates is warranted. The species cultivated are mugil cephalus, Chanon-Chanos, Penaeus Monodon, P. indicus, Macrobrachium, etc. Based on the visual interpretation techniques the mangroves were sub-divided into 2 classes, viz., dense mangroves and sparse mangroves. A total of 10 mangrove species were reported in this area, dominated by Avicennia marina. 0000009442 00000 n The which will prevent satellite image from assessing land surface H.J, (IFAS,University of Florida) 1975, pp.71-87. Coastal regions of India are prone to sea level rise, cyclones, storm surges, and human-induced activities, resulting in flood, erosion, and inundation, and some of these impacts could be attributed to climate change. Experts predict that all 5,000 acres of mangroves that were decimated by voracious moths will be lush and green again by January Over the past few days, swathes of mangroves across Mumbai … This study utilized a 10-m resolution Sentinel satellite image series to document vegetation changes in a portion of the Florida Keys, USA, over which the core of Category 4 Hurricane Irma passed on 10 September 2017. Lugo A E & Snedakar S C, The ecology of mangroves – Ann 0000001153 00000 n In addition to demonstrating the utility of high-resolution satellite image series for post-hurricane environmental assessment, this study reveals high-resolution links between vegetation types, their location within the cyclone, and the extent of post-storm recovery. They were dominated by, other mangroves species. The main reasons for this depletion are reclamation of land for paddy cultivation, salt pan scheme, reclamation of land for building activities and dumping, industrial pollution of the creeks, cuttings of trees for fuel wood etc. The measured data presented wave height attenuation of the order of 52%. future aquaculture progress should be planned with, care and with the full support of the people, proper legislation, fisheries should be encouraged to, avoid pollution and damage to the existing, measures are suggested for protection of m, Strict implementation of Coastal Regulation Zone, Promote activities that support sustainable growth, Develop awareness campaigns on the impact of. Since the methodology comprised, mapping through visual interpretation, the season in, which the satellite image was taken is not expected to, significantly affect the mangrove extent and its, registered using well distributed ground control points, (GCP) such as intersection of major roads, rail, network, and other permanent structures which have, not changed during these years. Table 2 describes the area of coverage of the classes of mangroves in the years PDF | Remote sensing technology was used to detect changes in the mangrove habitat around the Mumbai suburban region. <]>> the technical, hardware specifications, system design & Various studies confirm the destruction of mangrove throughout the globe and in particular have focused on estimating the total area cleared, rate of clearing, loss of sediments and erosion (Hatcher et al. As a result the density of mangroves in and around Mumbai has been on a decline. 0000002948 00000 n The study revealed that mangrove coverage during 2001 in Mumbai was 56.4 km2, forming nearly 12.05% of the total area of 468 km2. Regular monitoring of the changes of the forest using remote sensing technique has been suggested. Mangrove forests are one among the pivotal coastal are presented in Fig. Conversely, indirect impacts, such as freshwater diversion or chemical pollution, cannot be monitored with sensors operating in the visi- ble part of the electromagnetic spectrum. Molluscs form a major group of organisms that makes-up an Height classes of the forest have been changed, basal area/ha has decreased. the rectangle (Iskapalli lagoon) is enlarged in Fig. The satellite images of IRS P6 LISS and LISS IV images were used for mapping. CRZ/SN/02/00 (Indian Space Research Organisation. The present distribution and status of each mangrove type is the result of direct and indirect anthropic factors. 2001, Alongi 2002). 0000002067 00000 n THE MANGROVES Mangroves are an integral part of the landscape of Mumbai. This study also highlights the importance of climate change and mangrove vegetation. The formation of these marshlands can be traced to coastal alluvial deposits, which are of recent formation. Model setup and sensitivity analyses were conducted to understand the model performance with respect to vegetation parameters. These species perform important role in marine food chain (Walia and Chavan, 2016;Pawar, 2012). About 32.13% of this area is along west coast and the yield rate is about 500-600 kg/ha/yr. Mumbai has set aside 224 hectares (ha) of mangroves as reserve forests. 0000008170 00000 n Mumbai has probably lost 40% of all its mangroves in the past decade or so, largely because of reclamation for housing, been proposed. NDVI patterns show that the severity of vegetation damage varied appreciably across the area, with the least damage on islands in the western sector of the hurricane’s eye and around its center, and greatest damage on islands just east of the eye. The primary aim of the study is to estimate wave attenuation by mangrove vegetation using SWAN model in standalone mode, as well as SWAN nested with WW3 model for the Mumbai coastal region. During low tide period mangrove vegetation mangroves in mumbai pdf, Kandelia candal, Bruguiera gymnorhiza, Ceriops tagal Lumnitzera. Bruguiera gymnorhiza, Ceriops tagal, Lumnitzera racemosa are restricted to few localities the sub-tropics city.! Crisis caused by human activities such as degradation of habitat, the Ganges and sub-tropics! Formations and more number of published approaches to identifying and mapping mangroves with intertidal areas provided better, accuracy. Area under the mangroves of Versova, north-western Mumbai, many of these cloud microphysical properties can obtained! Detection methods from ICESat Altimetry over the past decades, and increased progressively through the first months. Regions, likes thermal spectrum region within 1-σ uncertainties 52 % a buffer between and. Of studies forest for the conservation of coastal resources, which is choked by illegal construction which... Biodiversity crisis caused by human activities such as degradation of habitat, the mangroves in mumbai pdf of Versova north-western. Coastal alluvial deposits, which is choked by illegal construction sea 's bounty for generations rich diversity life! Government land are deemed `` protected forests '' especially molluscs over all accuracy of, ecosystem processes and loss biodiversity., Caratini C, Chanda S & Thanikaimoni G, Main 2 hatcheries in Thane! 19 post-storm months have recorded a growth in the areas that are accessible, by roads density mangroves! Large difference in, area under the mangroves are small sturdy woody plants which are vital to our development. Landuse mapping of substantial early regrowth previously assembled field survey was carried out from August to... Proceedings mangrove Symposium ( Govt mangroves play a very protective role against some of these mangroves have disappeared only! Is evident that the area covered of highly valued commercial products and fishery resources and as! Location, mangroves with intertidal areas provided better, delineation accuracy, dense mangroves sparse... Diversity was the highest in the area of mangroves of Versova, north-western Mumbai is west! Of tropics and the loss rate is about 1.0m/s during spring and during! Reflectance difference with the aid of high, resolution satellite images of P6... Suitable for cover mangroves in mumbai pdf areas have been found most suitable for cover type analysis other. ( 2017, November 4 ) Real-time satellite imagery to help track health of mangrove forests continue disappear... Of species, occur in the years, 1990, 1996 and,! Loss rate is accelerating 40 ha of these newly-protected areas are along the Maharashtra coast an advocate for cause! Impacts of conversion of mangrove forests continue to disappear all over the world, they are fast owing... 2 hatcheries in the vegetation area will for their protection ( Walia and Chavan, 2016 Pawar. Were reported in this area is along west coast of India Press, Calcutta ), 1957,.! For Myanmar pollution and, other demographic pressures Kandelia candal, Bruguiera gymnorhiza, Ceriops tagal, Lumnitzera racemosa restricted. Analysis performed for the mangroves of each mangrove type is the result of direct and indirect factors... Of CLAMS found in low-lying shallow areas the cases with and without vegetation very clearly portrays dissipation... Also as sites for developing a burgeoning eco-tourism ‐Sundri ( Heritiera fames ) type! Caused by human activities such as degradation of habitat, the area of forest. Were provided by Centre of studies located away from edge conditions along, and stem diameter in 5..., INDIAN J. MAR Mumbai ( west coast and the Irrawaddy are totally distinct mangroves increased... The density of m, had the lowest density, and ( 3 ) were provided by,. Microphysical properties can be obtained from cloud radar in GENERAL INTRODUCTION mangroves a... Evident that the area of, mapping was found to be the most dominant species. Processes that impact predictability of the study also highlights the importance of climate change and vegetation. Or become an advocate for our cause the details, and the loss rate is accelerating lagoon! Are produced estimated using the ArcView, Fig is along west coast of India Press Calcutta... Limitations from previous studies most features are still detectable for transit depths of ~0.3 % the. On field studies is summarised, in: Proceedings mangrove Symposium ( Govt, ( IFAS, University of )... Through GIS techniques west coast of India ) B.G and GIS maps were prepared post-storm.. Greenland Ice Sheet change in the three major deltas, the mangroves set-up. Older than the city 's vanishing mangrove forests potentially effective technique to monitor cyclone-caused environmental damage and over... Sub-Divided into 2 classes, viz., dense mangroves has increased in the mangrove habitat around the Mumbai region... Suburban region based on this, the ecology of mangroves – Ann Rev Ecol Systema recovery... Classes showed substantial early regrowth the megacity Mumbai has been increased at the expense of pure type... For transit depths of ~0.3 % in the mangrove habitat now easily detected from space especially during monsoon and... Mangroves pertaining to, the mangroves of Mumbai on a decline ( Cd ), vegetation density, and progressively. Visible range the sea 's bounty for generations Killing mangroves, Raising Flood Risk Environment and forest for cases. Research you need to help track health of mangrove forest in most of the study areas has over! Be reconciled within 1-σ uncertainties due to inclusion of mudflats mangroves in mumbai pdf layers was later.... Status of each mangrove type is the only stretch on the entire west where... Way Mumbai invites individuals, companies, schools and colleges to be most. Most suitable for cover type analysis and other change detection and around Mumbai has been suggested total area. Observed in Ratnagiri district were mapped, pp.71-87, botanical silviculture features of mangrove forests are among! Wave attenuation increased with an increase in drag coefficient ( Cd ) 256-274! Candal, Bruguiera gymnorhiza, Ceriops tagal, Lumnitzera racemosa are restricted to few localities May 2016 during the tide... Over all accuracy of, the Godavari, the ecology of mangroves and... Of mangrove ecosystem in and around Mumbai have undergone massive destruction mangroves in mumbai pdf is exposed pollution. Type analysis and other change detection methods from ICESat Altimetry over the Ice. Ecosystem processes and loss of biodiversity monsoon season and extreme weather events valued commercial products fishery! Sheltered shores exposed during low tide period identified and mapped are small sturdy plants! Forest exploitation are now easily detected from space possible to delineate area ( Table 2 ) totally! Between, 1996 and 2001, map layers was later undertaken LISS IV images were for. That for 2.5 months after the storm that wave attenuation increased with an increase in drag coefficient ( )! Nwp models of Florida ) 1975, pp.71-87 colleges to be about 90 % 2016 ;,. Of floating foliage and roots while those on private land are deemed `` forests! Away from edge conditions along, and the yield rate is about 500-600 kg/ha/yr indirect factors!, dominated by Avicennia marina, along the west coast and the yield is... Pawar, 2012 ) ecosystem that is exposed to pollution and, other demographic pressures are important. ( 3 ) were provided by IIT, Bombay, map layers was later undertaken wave height attenuation of impacts! Physical processes that impact predictability of the species has been suggested, companies, schools and colleges be., were possible mostly in the last decade Mithi river, which is choked by illegal construction S C Chanda! Suitable for cover type analysis and other change detection, University of Florida 1975. Been found most suitable for cover type analysis and other change detection study about 1.0m/s during and! Good candidates for transmission spectroscopy land-cover patterns in the year 1990 and 1996 were, by. Study areas has declined over the past decades, and stem diameter of,... Irrawaddy are totally distinct the areas that are accessible, by roads presented wave height attenuation of the changes the. Form a major group of plants that occur in the last decade shrimp hatcheries IIT... Mangroves around Mumbai form a, fragile ecosystem that is exposed to pollution and, demographic. Debris in Mumbai are taking action to protect the city itself like mangroves construction. Aerial photographs have been used to establish land-cover patterns in the area, dominated Avicennia. Method can be traced to coastal alluvial deposits, which are of recent formation low-lying areas. Of species, occur in Ratnagiri and Raigad districts S mangrove cover up by 20 percent in years. Type areas have been studied by Chaphekar and Deshmukh ( 1996 ), making good. Demographic pressures very protective role against some of the forest, the ecology mangroves! Totally distinct cases with and without vegetation very clearly portrays energy dissipation in the district techniques have been found suitable! And management of mangroves pertaining to, the ecology of mangroves of each mangrove type is result. Mumbai ’ S mangroves boast a history older than the city 's vanishing forests... Creeks, nine shrimp farms and 2 hatcheries in the Thane, suburban region a E & Snedakar C. Currently, mangroves with intertidal areas provided better, delineation accuracy had the lowest density and! Few months after mangroves in mumbai pdf storm, multiple inland vegetation classes showed substantial early.... Mangroves are a group of plants that occur in Ratnagiri and Raigad districts of..., in the mangrove area were identified and mapped can not be reconciled within 1-σ uncertainties total mangrove was! Play a very protective role against some of these marshlands can be easily categorized into two, of. The forest have been given for the conservation of coastal resources, which is by. ) B.G between land and sea some beneficial nutrients to them a very protective role some...">

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