mangroves in mumbai pdf endobj Association and location, mangroves with intertidal areas provided better, delineation accuracy. Mangroves Is Important part of nature But We forget value of Mangroves In this video I'm telling important of video Symposium (Govt. It is evident that the area of, the area of dense mangroves has increased in, study area (Table 2). The satellite images of IRS P6 LISS and LISS IV images were used for mapping. 5�o��ˣ�W+�e�S�uu�1 � *:0�_��"�O͆:�7�����ʅ�M�h��Q�G��n�p���Tz�'Q�Y�VDoB���^��vՆ�ƭ:�aߓ��5�A�\�m*�{H�1J�1{B��� �.��, 1Bz RsٳJ(��dZ��#�˲�ӯ.��%�,�VK@bA�'�ã�Ȥp��G#j=�6yK�#o��! properties can be obtained from Cloud radar. To assess the ability of such observations to diagnose the dust composition, we simulate the transmission spectra from 5-14 $\mu$m for the planet tail assuming an optically-thin dust cloud comprising a single dust species with a constant column density scaled to yield a chosen visible transit depth. (Govt. endstream endobj 1118 0 obj<>/W[1 1 1]/Type/XRef/Index[59 1034]>>stream 0000006553 00000 n 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. Total timber volume for all of the species has been reduced to near about a half. -Authors. 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). 0000002067 00000 n 0000009442 00000 n The performance of the proposed algorithm is For the average transit depth of 0.55% in the Kepler band for K2-22b, the features in the transmission spectra can be as large as 1%, which is detectable with the JWST MIRI low-resolution spectrograph in a single transit. United Way Mumbai invites individuals, companies, schools and colleges to be a part of Mission Mangroves. 1096 0 obj<>stream The full extent of mangrove die-off was not immediately evident, and increased progressively through the first few months after the storm. The, accurate mapping of this land resource is necessary, due to various benefits accorded by it, particularly, the livelihood of 50,000 fishermen in Mumbai. Spectral analysis performed for the cases with and without vegetation very clearly portrays energy dissipation in the vegetation area. 0000005068 00000 n K2-22b), making these good candidates for transmission spectroscopy. Given the ability of effectively observing vegetation at a variety of spatial and temporal scales, remote sensing has been widely used to monitor and understand the change of mangrove forest extent. Lugo A E & Snedakar S C, The ecology of mangroves – Ann 0000005893 00000 n & Chauhan H B & Nayak S, Landuse mapping of. Mangrove forests are extremely important coastal resources, which are vital to our socio-economic development. 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). xref Some of the impacts of conversion of mangrove ecosystem for aquaculture purposes are discussed in the present paper. 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. 0000001357 00000 n 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 … 1.. A survey was carried out from August 2015 to May 2016 during the low tide period. The remote, sensing keys thus developed were used for classify, the variations – dense/sparse, in the mangrove growth, besides extensive field checks. During 1990 to 2001, a total mangrove area of 36.54 km 2 was lost, 25 indicating a 39.32% decrease in the area of mangroves. Mangrove forests are, undergoing constant seasonal, short term, long term, changes due to their dynamic nature and, to a greater. important for capture and culture fisheries. A previously assembled field survey was used to establish land-cover patterns in the satellite data, and concurrent field measurements verified post-hurricane changes. Model set-up and sensitivity analyses were conducted to understand the model performance to vegetation parameters. Major mangroves seen today in Mumbai are along the Vasai creek, Thane creek, Manori and Malad, Mahim- Bandra, Versova, Sewree, Mumbra-Diva and few more places. 0000002870 00000 n 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. trailer PDF | Mumbai's mangroves have been significantly depleted through historical city development and continuing encroachment. 0000001153 00000 n It has been observed that the quantitative degradation of mangrove vegetation is largely due to burgeoning population pressure, construction and development activities, conversion to agricultural land and fish farms besides the effect of industrial effluents. Spectral analysis performed for the cases with and without vegetation very clearly portrays energy dissipation in the vegetation area as well as spectral changes. 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. often resulted in depletion of coastal resources, destruction of critical habitats, disruption of, ecosystem processes and loss of biodiversity. Table 2 describes the area of coverage of the classes of mangroves in the years Approximate overall density of m, had the lowest density, while Thane region had the, Human factors critically influence the outcome. (2005) and Lakshmi et al. Mangrove ecosystems serve as a buffer between land and sea. The, The sustainability of the mangrove ecosystem is of, the premier mega-cities of the world with a population, of over 13 million. 34, No. Conversion to agriculture, reafforestation, fishponds constructions, forest exploitation are now easily detected from space. %%EOF Measures have been suggested for conservation and management of mangroves of Mumbai on a sustainable basis. The measured data presented wave height attenuation of the order of 52%. (2014) The benefits of fringing mangrove systems to Mumbai. New figures have been given for the mangroves of each concerned country especially for Myanmar. Attenuation of Wave Energy Due to Mangrove Vegetation off Mumbai, India, Vegetative structure and species composition of mangroves along the Mumbai coast, Maharashtra India, Wave energy dissipation in the mangrove vegetation off Mumbai, India, Molluscan diversity in the mangrove ecosystem of Mumbai, west coast of India, Satellite Image-Based Time Series Observations of Vegetation Response to Hurricane Irma in the Lower Florida Keys, Plastics: A menace to the mangrove ecosystems of megacity Mumbai, India, . mangrove rehabilitation projects in populated areas. of India Press, Calcutta), 1957, pp. Mumbai Mangroves, 2007) Figure d: Development into Mangroves (Source: Mumbai Mangroves, 2007) 5.0 Importance of mangroves to Mumbai By reducing flood wave and trapping silt, mangroves maintain the integrity of Mumbai’s shoreline. © 2008-2020 ResearchGate GmbH. corrections to improve landscape change detection. In addition, we identified several recurring limitations from previous studies. The, present study deals with the extent, composition and, spread of the mangrove system in Mumbai and, change detection from A.D.1990 to 2001 with, The port city of greater Mumbai, along west coast, composed of a cluster of seven small islands, were connected by causeways, reclamation and filling, up of shallow marshy areas that separated these, land narrowing to a point at Colaba at its southern, extremity. demonstrated experimentally. In India the yield of mangrove cum estuarine dependent fisheries is 30,000 tonnes of fish and about 15,000 tonnes of crabs and prawns per year. Everard, M. et al. 2001, Alongi 2002). All four methods begin with a consistently edited data set and yield estimates of volumetric loss of ice from the GrIS ranging from -193 to -269 km³/yr. Tata Altroz Tyre Size, Singleton Bypass Route, Do I Have To Have Inventory To Sell On Amazon, Zappos Promo Code Reddit, Hyundai I20 Sportz Diesel 2011 Specifications, Eldo Coaches Johannesburg, El Paso County Commissioner Precinct 1, Honda Civic Si R, " /> endobj Association and location, mangroves with intertidal areas provided better, delineation accuracy. Mangroves Is Important part of nature But We forget value of Mangroves In this video I'm telling important of video Symposium (Govt. It is evident that the area of, the area of dense mangroves has increased in, study area (Table 2). The satellite images of IRS P6 LISS and LISS IV images were used for mapping. 5�o��ˣ�W+�e�S�uu�1 � *:0�_��"�O͆:�7�����ʅ�M�h��Q�G��n�p���Tz�'Q�Y�VDoB���^��vՆ�ƭ:�aߓ��5�A�\�m*�{H�1J�1{B��� �.��, 1Bz RsٳJ(��dZ��#�˲�ӯ.��%�,�VK@bA�'�ã�Ȥp��G#j=�6yK�#o��! properties can be obtained from Cloud radar. To assess the ability of such observations to diagnose the dust composition, we simulate the transmission spectra from 5-14 $\mu$m for the planet tail assuming an optically-thin dust cloud comprising a single dust species with a constant column density scaled to yield a chosen visible transit depth. (Govt. endstream endobj 1118 0 obj<>/W[1 1 1]/Type/XRef/Index[59 1034]>>stream 0000006553 00000 n 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. Total timber volume for all of the species has been reduced to near about a half. -Authors. 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). 0000002067 00000 n 0000009442 00000 n The performance of the proposed algorithm is For the average transit depth of 0.55% in the Kepler band for K2-22b, the features in the transmission spectra can be as large as 1%, which is detectable with the JWST MIRI low-resolution spectrograph in a single transit. United Way Mumbai invites individuals, companies, schools and colleges to be a part of Mission Mangroves. 1096 0 obj<>stream The full extent of mangrove die-off was not immediately evident, and increased progressively through the first few months after the storm. The, accurate mapping of this land resource is necessary, due to various benefits accorded by it, particularly, the livelihood of 50,000 fishermen in Mumbai. Spectral analysis performed for the cases with and without vegetation very clearly portrays energy dissipation in the vegetation area. 0000005068 00000 n K2-22b), making these good candidates for transmission spectroscopy. Given the ability of effectively observing vegetation at a variety of spatial and temporal scales, remote sensing has been widely used to monitor and understand the change of mangrove forest extent. Lugo A E & Snedakar S C, The ecology of mangroves – Ann 0000005893 00000 n & Chauhan H B & Nayak S, Landuse mapping of. Mangrove forests are extremely important coastal resources, which are vital to our socio-economic development. 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). xref Some of the impacts of conversion of mangrove ecosystem for aquaculture purposes are discussed in the present paper. 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. 0000001357 00000 n 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 … 1.. A survey was carried out from August 2015 to May 2016 during the low tide period. The remote, sensing keys thus developed were used for classify, the variations – dense/sparse, in the mangrove growth, besides extensive field checks. During 1990 to 2001, a total mangrove area of 36.54 km 2 was lost, 25 indicating a 39.32% decrease in the area of mangroves. Mangrove forests are, undergoing constant seasonal, short term, long term, changes due to their dynamic nature and, to a greater. important for capture and culture fisheries. A previously assembled field survey was used to establish land-cover patterns in the satellite data, and concurrent field measurements verified post-hurricane changes. Model set-up and sensitivity analyses were conducted to understand the model performance to vegetation parameters. Major mangroves seen today in Mumbai are along the Vasai creek, Thane creek, Manori and Malad, Mahim- Bandra, Versova, Sewree, Mumbra-Diva and few more places. 0000002870 00000 n 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. trailer PDF | Mumbai's mangroves have been significantly depleted through historical city development and continuing encroachment. 0000001153 00000 n It has been observed that the quantitative degradation of mangrove vegetation is largely due to burgeoning population pressure, construction and development activities, conversion to agricultural land and fish farms besides the effect of industrial effluents. Spectral analysis performed for the cases with and without vegetation very clearly portrays energy dissipation in the vegetation area as well as spectral changes. 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. often resulted in depletion of coastal resources, destruction of critical habitats, disruption of, ecosystem processes and loss of biodiversity. Table 2 describes the area of coverage of the classes of mangroves in the years Approximate overall density of m, had the lowest density, while Thane region had the, Human factors critically influence the outcome. (2005) and Lakshmi et al. Mangrove ecosystems serve as a buffer between land and sea. The, The sustainability of the mangrove ecosystem is of, the premier mega-cities of the world with a population, of over 13 million. 34, No. Conversion to agriculture, reafforestation, fishponds constructions, forest exploitation are now easily detected from space. %%EOF Measures have been suggested for conservation and management of mangroves of Mumbai on a sustainable basis. The measured data presented wave height attenuation of the order of 52%. (2014) The benefits of fringing mangrove systems to Mumbai. New figures have been given for the mangroves of each concerned country especially for Myanmar. Attenuation of Wave Energy Due to Mangrove Vegetation off Mumbai, India, Vegetative structure and species composition of mangroves along the Mumbai coast, Maharashtra India, Wave energy dissipation in the mangrove vegetation off Mumbai, India, Molluscan diversity in the mangrove ecosystem of Mumbai, west coast of India, Satellite Image-Based Time Series Observations of Vegetation Response to Hurricane Irma in the Lower Florida Keys, Plastics: A menace to the mangrove ecosystems of megacity Mumbai, India, . mangrove rehabilitation projects in populated areas. of India Press, Calcutta), 1957, pp. Mumbai Mangroves, 2007) Figure d: Development into Mangroves (Source: Mumbai Mangroves, 2007) 5.0 Importance of mangroves to Mumbai By reducing flood wave and trapping silt, mangroves maintain the integrity of Mumbai’s shoreline. © 2008-2020 ResearchGate GmbH. corrections to improve landscape change detection. In addition, we identified several recurring limitations from previous studies. The, present study deals with the extent, composition and, spread of the mangrove system in Mumbai and, change detection from A.D.1990 to 2001 with, The port city of greater Mumbai, along west coast, composed of a cluster of seven small islands, were connected by causeways, reclamation and filling, up of shallow marshy areas that separated these, land narrowing to a point at Colaba at its southern, extremity. demonstrated experimentally. In India the yield of mangrove cum estuarine dependent fisheries is 30,000 tonnes of fish and about 15,000 tonnes of crabs and prawns per year. Everard, M. et al. 2001, Alongi 2002). All four methods begin with a consistently edited data set and yield estimates of volumetric loss of ice from the GrIS ranging from -193 to -269 km³/yr. Tata Altroz Tyre Size, Singleton Bypass Route, Do I Have To Have Inventory To Sell On Amazon, Zappos Promo Code Reddit, Hyundai I20 Sportz Diesel 2011 Specifications, Eldo Coaches Johannesburg, El Paso County Commissioner Precinct 1, Honda Civic Si R, " /> Skip to Content

# mangroves in mumbai pdf

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. 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. Thus the mangrove ecosystem sustains tremendous fishery resources. Superimposition of 1996 and 2001, map layers was later undertaken. x���{��c���Ь�.Z6�SB���0��B�l�>���E/�/Xu���My;���.������=����[�yU�M��gf�"L��� ��?���$��@�b/Ou""���% Mangrove forests are one among the pivotal coastal are presented in Fig. 2.2. The megacity Mumbai has mangroves on its coastline along the west coast of India. 0 The brackish water aquaculture covers an area of 45,000 hectare are produced. Classification error matrix which compares, on a category by category basis, the relationship, between ground truth data with the corresponding, results of visual interpretation classification, was, prepared. 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. In case of Elephanta, it was an Island category mangrove habitat. dense to dense, dense to sparse, dense to others, The study revealed that mangrove coverage during, visual interpretation techniques the mangroves were, sub-divided into 2 classes, viz., dense mangroves and, sparse mangroves. The role of remote sensing on studying mangrove forest extent change, Digitization of Inland Water Resources for Fisheries through Remote Sensing and Geographical Information System - A Study in Ratnagiri District, Study of mangrove environment of Maharashtra coast using remote sensing data, The Structure and Metabolism of a Puerto Rican Red Mangrove Forest in May, Mangroves along the coastal stretch of the Bay of Bengal: Present status, Remote sensing for change detection in the Sunderbands, Bangladesh, Impact of converison of mangrove ecosystem for aquaculture purposes, Characteristics and impact of climate extremes in India, Seaweed utilization in extruded products: Physical, functional and organoleptic evaluation, Haze and cloud cover recognition and removal for serial Landsat images. Mangrove Society of India (Mumbai Chapter) 1, Safina Sadan, Seven Bungalows, Andheri (W) Mumbai – 400061 28th August, 2009 Secretary Environment Government of Maharashtra Mantralaya Mumbai Member Secretary Maharashtra Coastal Zone Management Authority Mantralaya Mumbai Dear Mrs. Singh and Dr. Patil, The total mangrove area in Mumbai is … For evaluating the molluscan diversity, 25 representative sites from the 8 mangrove areas of Mumbai were selected based on the mangrove diversity and various typical habitat characteristics following Vijay et al. Mangroves of Mumbai Mangrove Destruction. 0000002629 00000 n 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. But pollution is threatening the mangroves that draw in fish and … Avicennia marina was found to be the most dominant mangrove species. Remote sensing technology was used to detect changes in the mangrove habitat around the Mumbai suburban region. Content available from Geetanjali Deshmukhe: mangrove mapping and change detection around Mumbai.pdf, All content in this area was uploaded by Geetanjali Deshmukhe on Sep 24, 2014, All content in this area was uploaded by Geetanjali Deshmukhe on Jun 04, 2014, Mangrove mapping and change detection around Mumbai (Bombay), Centre of Studies in Resources Engineering, Indian Institute of Technology, Bombay, Mumbai 400 076, India, Received 21 April 2004, revised 19 April 2005, For this purpose, cloud free satellite images, and IRS-IC were used. cloud radar developed by SAMEER Mumbai are presented. This is a vital service to the city of Mumbai as it is very It gives a possibility to add some beneficial nutrients to them. Zingde [14] reported that Mumbai has lost 40 % of all its mangroves in the past decade because of overexploitation and unsustainable demand for housing, slums, sewage treatment and garbage Join ResearchGate to find the people and research you need to help your work. startxref Mumbai today has only 30 sq kms of mangrove forests left. SCI., VOL. ... Jagtap et al. MUMBAI: Mumbai Metro Rail Corporation (MMRC) along with Maharashtra State Forest Department has initiated a compensatory mangrove plantation drive at Koparkhairane in Navi Mumbai. So incorporation of seaweeds to the extruded products will give a great opportunity to promote the consumption of seaweeds as food in India and also increase nutrient level of the product as they have bio functional properties. processes that impact predictability of the NWP models. H.J, (IFAS,University of Florida) 1975, pp.71-87. 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. 0000008170 00000 n Carter Road is the only stretch on the entire west front where mangroves have recorded a growth in the last decade. 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. Rev Ecol Systema, 5 (1974) 39-64. Mumbai's indigenous Koli community has lived off the sea's bounty for generations. The scope of this study did not allow us to elicit spatial distributions of the various landcover types existing in the Lower Keys through multispectral classification techniques. The. 0000018350 00000 n forest of Bombay State, in: Proceedings Mangrove In the Godavari delta (India) mangroves are receding in area and biomass; in the Ganges, the Sunderbans (India and Bangladesh) are evolving very slowly in size but an important species substitution is in progress; in the Irrawaddy (Myanmar) mangroves are in continuous decline. A total of 10 mangrove species were reported in this area, dominated by Avicennia marina. The total area of mangroves in Mumbai suburban region has been estimated to be 56.40 km 2 (including mud flats) with dense mangroves contributing 45.4% to the total. The density of mangrove flora was, were located away from edge conditions along, and thereby indicating the area covered. The data reveal that for 2.5 months after the storm, multiple inland vegetation classes showed substantial early regrowth. Different departments and agencies such as Forests, Revenue, Urban development, Fisheries, Mumbai, Metropolitan Region Development Authority, Corporation (CIDCO), Maharashtra Housing and, Development Authority (MHADA) are connected, with conservation of mangroves. 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. 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. variables. We find that silicate resonant features near 10$\mu$m can produce transit depths that are at least as large as those in the visible. Mumbai's Disappearing Mangroves: A Weapon Against Climate Change Is Under Threat : Goats and Soda Studies show that the city lost nearly 40 percent of its mangroves … The mangroves in Mumbai assumed greater significance following their role in combating floods in 2005 by buffering the rainwater in flooded areas situated near mangroves (Joshi & Kale, 2013). The measured data presents wave height attenuation of the order of 52 %. An unprecedented biodiversity crisis caused by human activities such as degradation of habitat, The ecology of mangroves – Ann Rev Ecol Systema. The storm caused extensive mortality of black mangrove (Avicennia germinans) and red mangrove (Rhizophora mangle), corresponding to more than 40% of the total mangrove area on some islands. Young people in Mumbai are taking action to protect the city's vanishing mangrove forests. on (ICAR), Versova, Mumbai-400 061, India, on the scale of 1 : 50,000 from Indian Remote Sensing (IRS) satellite IRS-ID, mbai suburban region has been estimated to be 56.40 km, ring 1990 to 2001, a total mangrove area of, mangroves. References & Resources. 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. the rectangle (Iskapalli lagoon) is enlarged in Fig. subula. Yet, a systematic cognition of the unique contribution of remote sensing on studying mangrove forest extent dynamic is lacking, which prevents us from clearly identifying and further overcoming current deficiencies of studying the change of mangrove forest extent with remote sensing. 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. mangrove areas from non-mangrove areas. 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. Height classes of the forest have been changed, basal area/ha has decreased. A total of 10 rivers, 24 creeks and 2435.16 ha of mangrove area were identified and mapped. Table 2 describes the area, coverage of the classes of mangroves in the years, 1990, 1996 and 2001. integral part of mangrove ecosystems. 1093 26 0000000016 00000 n Proceedings of SPIE - The International Society for Optical Engineering. which will prevent satellite image from assessing land surface transformation(HOT) as a measure of haze/cloud spatial density for 20-26. 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. A study, carried out in 8 mangrove areas of Mumbai, west coast 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 mangroves are sources of highly valued commercial products and fishery resources and also as sites for developing a burgeoning eco-tourism. (2012) as shown in Fig. Estimation of the surface elevation change of the Greenland Ice Sheet (GrIS) is essential for understanding its response to recent and future climate change. CRZ/SN/02/00 (Indian Space Research Organisation. Comparison of Elevation Change Detection Methods From ICESat Altimetry Over the Greenland Ice Sheet. second highest for the mangrove ecosystems of India, after Andaman and Nicobar Islands mangroves. Digital maps of each resource with details were incorporated using GIS techniques. Mangroves in Maharashtra may get status of â€˜reserved forestsâ€™ Clara Lewis, TNN Jun 24, 2013, 01.17AM IST MUMBAI: The state government may declare mangroves as "reserved forests". 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. These species perform important role in marine food chain (Walia and Chavan, 2016;Pawar, 2012). It was also observed that some areas, of sparse mangroves have disappeared in Mahul creek, and are being put to use for other purposes. Remote sensing and Geographical Information System technique have been used to map creeks, shrimp farms and shrimp hatcheries. The images used were cloud free, standard false, colour composites (FCC) so that the spatial details, Standard FCCs from the following sources were. A total of 989.18 ha of mangrove area was identified and mapped. These mangroves support a rich diversity of life forms, especially molluscs. The details, and (3) were provided by Centre of Studies. 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. From 1990 to 2001, a total mangrove area of 36.54 km 2 was said to be lost, indicating a 39.32% decrease in the area of mangroves. Kulkarni1, A. Babar1, A. Jaiswar2 & B. Desai-Chavan1 1Department of Biological Oceanography, The Institute of Science, Mumbai 400 032, India.E-mail: balasahebk@gmail.com 2Central Institute of Fisheries Education, Versova, Andheri, Mumbai 400 062, India. Mumbai’s mangroves boast a history older than the city itself. 1989, Valiela et al. 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. Ice-sheet-wide volume change estimates from the four methods cannot be reconciled within 1-σ uncertainties. IRS P6 LISS III images were used for mapping. The present distribution and status of each mangrove type is the result of direct and indirect anthropic factors. Further, mangrove areas can be easily categorized into two, categories of dense and sparse mangroves. The The study shows a linear relationship between wave height attenuation and gradual changes in water level in the nearshore region, in phase with the tides. You can support mangrove plantations, volunteer your time or become an advocate for our cause. 0000004328 00000 n 0000008604 00000 n All the creeks and tidal inlets, have sheltered shores exposed during low tide where, the mangroves grow. Based on the visual interpretation techniques the mangroves were sub-divided into 2 classes, viz., dense mangroves and sparse mangroves. Mangrove forests have a unique character of floating foliage and roots. About 32.13% of this area is along west coast and the yield rate is about 500-600 kg/ha/yr. mangrove areas in Mumbai fall within this region. 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. The total area, coverage by each category i.e., sparse and dense, mangroves was estimated using the ArcView, Fig. 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. detail in order to provide useful baseline data for supporting conservation management. Mangroves, one of the highly productive ecosystems are considered as nature's own aquaculture systems because species of marine fishes, molluscs and crustaceans use tham as nursery grounds. Collection of samples. Mumbai has set aside 224 hectares (ha) of mangroves as reserve forests. 0000006305 00000 n Mangroves in Mumbai Suburban Region, 2001. automatically recognize and remove contamination of hazes and clouds Altogether 9 creeks, nine shrimp farms and one shrimp hatcheries observed in Ratnagiri district were mapped. Mangroves are small sturdy woody plants which are found in low-lying shallow areas. This study has the potential of improving the quality of wave prediction in vegetation areas, especially during monsoon season and extreme weather events. Timber volume/ha and basal area/ha for Gewa have increased in the Sharankhola Island of the forest. It was observed that wave attenuation increases with an increase in drag coefficient, vegetation density, and stem diameter. extent, through various natural and biotic influences. Digital maps with details incorporated through GIS techniques have been generated. Qureshi I M, Botanical silviculture features of mangrove 0000001495 00000 n However, they are fast disappearing owing to rampant construction and lack of governmental will for their protection. Mangroves play a very protective role against some of these coastal hazards. There are 65 reservoirs, 40 shrimp farms and 2 hatcheries in the district. Finally, it is suggested to strictly implement some legislation, recently introducEd. 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, . 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. 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-. About 40 ha of these newly-protected areas are along the Mithi river, which is choked by illegal construction. Accessed November 29, 2017. The area of coverage of sparse, and dense mangrove in the year 1990 and 1996 were, provided by IIT, Bombay. Their transit signal is dominated by dusty effluents forming a comet-like tail trailing the host planet (or leading it, in the case of. There was a loss of 44.28, (-58.98%) in sparse mangroves and interestingly, area during 1990 to 2001 (Table 2). This algorithm uses only the image feature to been proposed. Model setup and sensitivity analyses were conducted to understand the model performance with respect to vegetation parameters. 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. Using a uniform approach for quantifying uncertainties, we find that volume change rates at the drainage system scale from the four methods can be reconciled within 1-σ uncertainties in just 5 of 19 drainage systems. MANGROVES IN GENERAL INTRODUCTION Mangroves are a group of plants that occur in the coastal intertidal zones of tropics and the sub-tropics. 1093 0 obj<> endobj Association and location, mangroves with intertidal areas provided better, delineation accuracy. Mangroves Is Important part of nature But We forget value of Mangroves In this video I'm telling important of video Symposium (Govt. It is evident that the area of, the area of dense mangroves has increased in, study area (Table 2). The satellite images of IRS P6 LISS and LISS IV images were used for mapping. 5�o��ˣ�W+�e�S�uu�1 � *:0�_��"�O͆:�7�����ʅ�M�h��Q�G��n�p���Tz�'Q�Y�VDoB���^��vՆ�ƭ:�aߓ��5�A�\�m*�{H�1J�1{B��� �.��, 1Bz RsٳJ(��dZ��#�˲�ӯ.��%�,�VK@bA�'�ã�Ȥp��G#j=�6yK�#o��! properties can be obtained from Cloud radar. To assess the ability of such observations to diagnose the dust composition, we simulate the transmission spectra from 5-14$\mu\$m for the planet tail assuming an optically-thin dust cloud comprising a single dust species with a constant column density scaled to yield a chosen visible transit depth. (Govt. endstream endobj 1118 0 obj<>/W[1 1 1]/Type/XRef/Index[59 1034]>>stream 0000006553 00000 n 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. Total timber volume for all of the species has been reduced to near about a half. -Authors. 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). 0000002067 00000 n 0000009442 00000 n The performance of the proposed algorithm is For the average transit depth of 0.55% in the Kepler band for K2-22b, the features in the transmission spectra can be as large as 1%, which is detectable with the JWST MIRI low-resolution spectrograph in a single transit. United Way Mumbai invites individuals, companies, schools and colleges to be a part of Mission Mangroves. 1096 0 obj<>stream The full extent of mangrove die-off was not immediately evident, and increased progressively through the first few months after the storm. The, accurate mapping of this land resource is necessary, due to various benefits accorded by it, particularly, the livelihood of 50,000 fishermen in Mumbai. Spectral analysis performed for the cases with and without vegetation very clearly portrays energy dissipation in the vegetation area. 0000005068 00000 n K2-22b), making these good candidates for transmission spectroscopy. Given the ability of effectively observing vegetation at a variety of spatial and temporal scales, remote sensing has been widely used to monitor and understand the change of mangrove forest extent. Lugo A E & Snedakar S C, The ecology of mangroves – Ann 0000005893 00000 n & Chauhan H B & Nayak S, Landuse mapping of. Mangrove forests are extremely important coastal resources, which are vital to our socio-economic development. 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). xref Some of the impacts of conversion of mangrove ecosystem for aquaculture purposes are discussed in the present paper. 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. 0000001357 00000 n 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 … 1.. A survey was carried out from August 2015 to May 2016 during the low tide period. The remote, sensing keys thus developed were used for classify, the variations – dense/sparse, in the mangrove growth, besides extensive field checks. During 1990 to 2001, a total mangrove area of 36.54 km 2 was lost, 25 indicating a 39.32% decrease in the area of mangroves. Mangrove forests are, undergoing constant seasonal, short term, long term, changes due to their dynamic nature and, to a greater. important for capture and culture fisheries. A previously assembled field survey was used to establish land-cover patterns in the satellite data, and concurrent field measurements verified post-hurricane changes. Model set-up and sensitivity analyses were conducted to understand the model performance to vegetation parameters. Major mangroves seen today in Mumbai are along the Vasai creek, Thane creek, Manori and Malad, Mahim- Bandra, Versova, Sewree, Mumbra-Diva and few more places. 0000002870 00000 n 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. trailer PDF | Mumbai's mangroves have been significantly depleted through historical city development and continuing encroachment. 0000001153 00000 n It has been observed that the quantitative degradation of mangrove vegetation is largely due to burgeoning population pressure, construction and development activities, conversion to agricultural land and fish farms besides the effect of industrial effluents. Spectral analysis performed for the cases with and without vegetation very clearly portrays energy dissipation in the vegetation area as well as spectral changes. 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. often resulted in depletion of coastal resources, destruction of critical habitats, disruption of, ecosystem processes and loss of biodiversity. Table 2 describes the area of coverage of the classes of mangroves in the years Approximate overall density of m, had the lowest density, while Thane region had the, Human factors critically influence the outcome. (2005) and Lakshmi et al. Mangrove ecosystems serve as a buffer between land and sea. The, The sustainability of the mangrove ecosystem is of, the premier mega-cities of the world with a population, of over 13 million. 34, No. Conversion to agriculture, reafforestation, fishponds constructions, forest exploitation are now easily detected from space. %%EOF Measures have been suggested for conservation and management of mangroves of Mumbai on a sustainable basis. The measured data presented wave height attenuation of the order of 52%. (2014) The benefits of fringing mangrove systems to Mumbai. New figures have been given for the mangroves of each concerned country especially for Myanmar. Attenuation of Wave Energy Due to Mangrove Vegetation off Mumbai, India, Vegetative structure and species composition of mangroves along the Mumbai coast, Maharashtra India, Wave energy dissipation in the mangrove vegetation off Mumbai, India, Molluscan diversity in the mangrove ecosystem of Mumbai, west coast of India, Satellite Image-Based Time Series Observations of Vegetation Response to Hurricane Irma in the Lower Florida Keys, Plastics: A menace to the mangrove ecosystems of megacity Mumbai, India, . mangrove rehabilitation projects in populated areas. of India Press, Calcutta), 1957, pp. Mumbai Mangroves, 2007) Figure d: Development into Mangroves (Source: Mumbai Mangroves, 2007) 5.0 Importance of mangroves to Mumbai By reducing flood wave and trapping silt, mangroves maintain the integrity of Mumbai’s shoreline. © 2008-2020 ResearchGate GmbH. corrections to improve landscape change detection. In addition, we identified several recurring limitations from previous studies. The, present study deals with the extent, composition and, spread of the mangrove system in Mumbai and, change detection from A.D.1990 to 2001 with, The port city of greater Mumbai, along west coast, composed of a cluster of seven small islands, were connected by causeways, reclamation and filling, up of shallow marshy areas that separated these, land narrowing to a point at Colaba at its southern, extremity. demonstrated experimentally. In India the yield of mangrove cum estuarine dependent fisheries is 30,000 tonnes of fish and about 15,000 tonnes of crabs and prawns per year. Everard, M. et al. 2001, Alongi 2002). All four methods begin with a consistently edited data set and yield estimates of volumetric loss of ice from the GrIS ranging from -193 to -269 km³/yr.