Linking carbon storage with land use dynamics in a coastal Ramsar wetland
Coastal wetland ecosystems make an important contribution to the global carbon pool, yet their extent is declining due to aquaculture-related land use changes. We conducted an extensive investigation into the carbon stock and area coverage of macrophytes in a tropical coastal Ramsar wetland, Kolleru...
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| Veröffentlicht in: | The Science of the total environment 2024-07, Vol.932, p.173078-173078, Article 173078 |
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| description | Coastal wetland ecosystems make an important contribution to the global carbon pool, yet their extent is declining due to aquaculture-related land use changes. We conducted an extensive investigation into the carbon stock and area coverage of macrophytes in a tropical coastal Ramsar wetland, Kolleru in Andhra Pradesh, India. A total of 72 quadrats of size 1 × 1 m2 were laid in the wetland, 19 species of macrophytes were collected and analyzed for carbon content using a CNHS analyzer. To assess changes in the wetland macrophytes, Normalized Difference Vegetation Index (NDVI) was estimated using Landsat time series data from 1975 to 2023. The importance value index (IVI) of macrophytes scored highest for the Ipomoea aquatica (41.4) and the lowest for Ottelia alismoides (1.9). Non-metric multidimensional scaling (NMDS) significantly (r = 0.1905, p = 0.0361) revealed a clear separation of macrophytes in ordination space. ANOVA indicated highly significant (p |
| doi_str_mv | 10.1016/j.scitotenv.2024.173078 |
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[Display omitted]
•Assessing the carbon stock of macrophytes in a coastal Ramsar wetland.•Coastal wetlands are indispensable for the sequestration of atmospheric CO2.•Aquaculture is recognized as a major threat to coastal wetland ecosystems.•Wetland conversion into fishponds has resulted in a loss of 55.3 % of carbon storage.•Restoration of macrophyte cover is vital for mitigating the impacts of climate change.</description><identifier>ISSN: 0048-9697</identifier><identifier>EISSN: 1879-1026</identifier><identifier>DOI: 10.1016/j.scitotenv.2024.173078</identifier><identifier>PMID: 38723968</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Aquaculture ; Biomass ; carbon ; Carbon sequestration ; carbon sinks ; climate change ; environment ; India ; Ipomoea aquatica ; Kolleru ; land cover ; land use ; Landsat ; Macrophytes ; Ottelia alismoides ; Phragmites ; Ramsar wetland ; species ; time series analysis ; Utricularia ; vegetation index ; wetlands</subject><ispartof>The Science of the total environment, 2024-07, Vol.932, p.173078-173078, Article 173078</ispartof><rights>2024 Elsevier B.V.</rights><rights>Copyright © 2024 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c404t-583b664bf8b85f17182f06b2641a21003581c6ee9d85a68a49cbfaf849085cfb3</citedby><cites>FETCH-LOGICAL-c404t-583b664bf8b85f17182f06b2641a21003581c6ee9d85a68a49cbfaf849085cfb3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S004896972403225X$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/38723968$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Dar, Shahid Ahmad</creatorcontrib><creatorcontrib>Dar, Javid Ahmad</creatorcontrib><title>Linking carbon storage with land use dynamics in a coastal Ramsar wetland</title><title>The Science of the total environment</title><addtitle>Sci Total Environ</addtitle><description>Coastal wetland ecosystems make an important contribution to the global carbon pool, yet their extent is declining due to aquaculture-related land use changes. We conducted an extensive investigation into the carbon stock and area coverage of macrophytes in a tropical coastal Ramsar wetland, Kolleru in Andhra Pradesh, India. A total of 72 quadrats of size 1 × 1 m2 were laid in the wetland, 19 species of macrophytes were collected and analyzed for carbon content using a CNHS analyzer. To assess changes in the wetland macrophytes, Normalized Difference Vegetation Index (NDVI) was estimated using Landsat time series data from 1975 to 2023. The importance value index (IVI) of macrophytes scored highest for the Ipomoea aquatica (41.4) and the lowest for Ottelia alismoides (1.9). Non-metric multidimensional scaling (NMDS) significantly (r = 0.1905, p = 0.0361) revealed a clear separation of macrophytes in ordination space. ANOVA indicated highly significant (p < 0.0001) variations in the carbon content of aboveground and belowground components of macrophytes. Among the different macrophytes, the highest carbon content was found in Phragmites karka (0.6 g. g−1) and the lowest was recorded in Utricularia stellaris (0.2 g. g−1). On an average, emergents in the Kolleru wetland sequester 1525 ± 181 g C m−2 yr−1, rooted floating species sequester 858 ± 101 g C m−2 yr−1, submerged macrophytes sequester 480 ± 60 g C m−2 yr−1, and free-floating macrophytes sequester 221 ± 90 g C m−2 yr−1. Land cover mapping revealed a decrease in spread of aquatic vegetation from 225.2 km2 in 1975 to 100.6 km2 in 2023. Although macrophytes are vital carbon sinks, the wetland conversion into fishponds has resulted in a loss of 55.3 % of carbon storage. Therefore, immediate restoration of macrophyte cover is vital for the proper functioning of carbon sequestration and mitigation of climate change impacts.
[Display omitted]
•Assessing the carbon stock of macrophytes in a coastal Ramsar wetland.•Coastal wetlands are indispensable for the sequestration of atmospheric CO2.•Aquaculture is recognized as a major threat to coastal wetland ecosystems.•Wetland conversion into fishponds has resulted in a loss of 55.3 % of carbon storage.•Restoration of macrophyte cover is vital for mitigating the impacts of climate change.</description><subject>Aquaculture</subject><subject>Biomass</subject><subject>carbon</subject><subject>Carbon sequestration</subject><subject>carbon sinks</subject><subject>climate change</subject><subject>environment</subject><subject>India</subject><subject>Ipomoea aquatica</subject><subject>Kolleru</subject><subject>land cover</subject><subject>land use</subject><subject>Landsat</subject><subject>Macrophytes</subject><subject>Ottelia alismoides</subject><subject>Phragmites</subject><subject>Ramsar wetland</subject><subject>species</subject><subject>time series analysis</subject><subject>Utricularia</subject><subject>vegetation index</subject><subject>wetlands</subject><issn>0048-9697</issn><issn>1879-1026</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNqFkMtOwzAQRS0EouXxC-Alm5Rx7NjOsqp4SZWQEKwtx5kUlyYptkvF35Oq0C2zuZszc0eHkGsGEwZM3i4n0fnUJ-y-JjnkYsIUB6WPyJhpVWYMcnlMxgBCZ6Us1YicxbiEYZRmp2TEtcp5KfWYPM199-G7BXU2VH1HY-qDXSDd-vROV7ar6SYirb8723oXqe-opa63MdkVfbFttIFuMe3AC3LS2FXEy988J2_3d6-zx2z-_PA0m84zJ0CkrNC8klJUja500TDFdN6ArHIpmM0ZAC80cxKxrHVhpbaidFVjGy1K0IVrKn5ObvZ316H_3GBMpvXR4Wr4AftNNJwVXGkBQ_yLQsFLxQWDAVV71IU-xoCNWQff2vBtGJidcrM0B-Vmp9zslQ-bV78lm6rF-rD353gApnsABytfHsPuEHYOax_QJVP3_t-SHyevlbE</recordid><startdate>20240701</startdate><enddate>20240701</enddate><creator>Dar, Shahid Ahmad</creator><creator>Dar, Javid Ahmad</creator><general>Elsevier B.V</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7S9</scope><scope>L.6</scope></search><sort><creationdate>20240701</creationdate><title>Linking carbon storage with land use dynamics in a coastal Ramsar wetland</title><author>Dar, Shahid Ahmad ; Dar, Javid Ahmad</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c404t-583b664bf8b85f17182f06b2641a21003581c6ee9d85a68a49cbfaf849085cfb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Aquaculture</topic><topic>Biomass</topic><topic>carbon</topic><topic>Carbon sequestration</topic><topic>carbon sinks</topic><topic>climate change</topic><topic>environment</topic><topic>India</topic><topic>Ipomoea aquatica</topic><topic>Kolleru</topic><topic>land cover</topic><topic>land use</topic><topic>Landsat</topic><topic>Macrophytes</topic><topic>Ottelia alismoides</topic><topic>Phragmites</topic><topic>Ramsar wetland</topic><topic>species</topic><topic>time series analysis</topic><topic>Utricularia</topic><topic>vegetation index</topic><topic>wetlands</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dar, Shahid Ahmad</creatorcontrib><creatorcontrib>Dar, Javid Ahmad</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>AGRICOLA</collection><collection>AGRICOLA - Academic</collection><jtitle>The Science of the total environment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dar, Shahid Ahmad</au><au>Dar, Javid Ahmad</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Linking carbon storage with land use dynamics in a coastal Ramsar wetland</atitle><jtitle>The Science of the total environment</jtitle><addtitle>Sci Total Environ</addtitle><date>2024-07-01</date><risdate>2024</risdate><volume>932</volume><spage>173078</spage><epage>173078</epage><pages>173078-173078</pages><artnum>173078</artnum><issn>0048-9697</issn><eissn>1879-1026</eissn><abstract>Coastal wetland ecosystems make an important contribution to the global carbon pool, yet their extent is declining due to aquaculture-related land use changes. We conducted an extensive investigation into the carbon stock and area coverage of macrophytes in a tropical coastal Ramsar wetland, Kolleru in Andhra Pradesh, India. A total of 72 quadrats of size 1 × 1 m2 were laid in the wetland, 19 species of macrophytes were collected and analyzed for carbon content using a CNHS analyzer. To assess changes in the wetland macrophytes, Normalized Difference Vegetation Index (NDVI) was estimated using Landsat time series data from 1975 to 2023. The importance value index (IVI) of macrophytes scored highest for the Ipomoea aquatica (41.4) and the lowest for Ottelia alismoides (1.9). Non-metric multidimensional scaling (NMDS) significantly (r = 0.1905, p = 0.0361) revealed a clear separation of macrophytes in ordination space. ANOVA indicated highly significant (p < 0.0001) variations in the carbon content of aboveground and belowground components of macrophytes. Among the different macrophytes, the highest carbon content was found in Phragmites karka (0.6 g. g−1) and the lowest was recorded in Utricularia stellaris (0.2 g. g−1). On an average, emergents in the Kolleru wetland sequester 1525 ± 181 g C m−2 yr−1, rooted floating species sequester 858 ± 101 g C m−2 yr−1, submerged macrophytes sequester 480 ± 60 g C m−2 yr−1, and free-floating macrophytes sequester 221 ± 90 g C m−2 yr−1. Land cover mapping revealed a decrease in spread of aquatic vegetation from 225.2 km2 in 1975 to 100.6 km2 in 2023. Although macrophytes are vital carbon sinks, the wetland conversion into fishponds has resulted in a loss of 55.3 % of carbon storage. Therefore, immediate restoration of macrophyte cover is vital for the proper functioning of carbon sequestration and mitigation of climate change impacts.
[Display omitted]
•Assessing the carbon stock of macrophytes in a coastal Ramsar wetland.•Coastal wetlands are indispensable for the sequestration of atmospheric CO2.•Aquaculture is recognized as a major threat to coastal wetland ecosystems.•Wetland conversion into fishponds has resulted in a loss of 55.3 % of carbon storage.•Restoration of macrophyte cover is vital for mitigating the impacts of climate change.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>38723968</pmid><doi>10.1016/j.scitotenv.2024.173078</doi><tpages>1</tpages></addata></record> |
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| subjects | Aquaculture Biomass carbon Carbon sequestration carbon sinks climate change environment India Ipomoea aquatica Kolleru land cover land use Landsat Macrophytes Ottelia alismoides Phragmites Ramsar wetland species time series analysis Utricularia vegetation index wetlands |
| title | Linking carbon storage with land use dynamics in a coastal Ramsar wetland |
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