Holocene mangrove and coastal environmental changes in the western Ganga—Brahmaputra Delta, India
A 50 m-long radiocarbon dated core was studied through sediment and pollen analysis to reconstruct the Holocene mangrove and environmental changes at a coastal site Pakhiralaya in the Sundarban Biosphere Reserve in the western Ganga—Brahmaputra Delta, India. This biosphere reserve harbours a diverse...
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| Veröffentlicht in: | Vegetation history and archaeobotany 2009-03, Vol.18 (2), p.159-169 |
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| description | A 50 m-long radiocarbon dated core was studied through sediment and pollen analysis to reconstruct the Holocene mangrove and environmental changes at a coastal site Pakhiralaya in the Sundarban Biosphere Reserve in the western Ganga—Brahmaputra Delta, India. This biosphere reserve harbours a diverse mangrove ecosystem and supports a large number of people living in the area. Pollen and stratigraphic data indicate the existence of a brackish water estuarine mangrove swamp forest in this area during the last 9880 cal yr B.P. The development of the mangrove forest is not shown continuously in the Holocene record. Rapid transgression of the sea (9240 cal yr B.P.) halted the development of the mangrove. After about 8420 cal yr B.P. mangrove recolonised the area and persisted until 7560 cal yr B.P. as a result of a balance between the sedimentation and sea level fluctuation. The mangrove disappeared again from the site until 4800 cal yr B.P. because of a high sedimentation rate and possible delta progradation with loss of habitats. The reappearance of mangrove at the study site occurred with a return of a brackish water estuarine environment and the site then gradually became supra tidal during the mid-late Holocene. The continuity of the mangrove development and dynamics was interrupted by the fluctuating sea levels. Climatic fluctuations were viewed as an indirect factor influencing the mangrove ecosystem. |
| doi_str_mv | 10.1007/s00334-008-0203-5 |
| format | Article |
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This biosphere reserve harbours a diverse mangrove ecosystem and supports a large number of people living in the area. Pollen and stratigraphic data indicate the existence of a brackish water estuarine mangrove swamp forest in this area during the last 9880 cal yr B.P. The development of the mangrove forest is not shown continuously in the Holocene record. Rapid transgression of the sea (9240 cal yr B.P.) halted the development of the mangrove. After about 8420 cal yr B.P. mangrove recolonised the area and persisted until 7560 cal yr B.P. as a result of a balance between the sedimentation and sea level fluctuation. The mangrove disappeared again from the site until 4800 cal yr B.P. because of a high sedimentation rate and possible delta progradation with loss of habitats. The reappearance of mangrove at the study site occurred with a return of a brackish water estuarine environment and the site then gradually became supra tidal during the mid-late Holocene. The continuity of the mangrove development and dynamics was interrupted by the fluctuating sea levels. Climatic fluctuations were viewed as an indirect factor influencing the mangrove ecosystem.</description><identifier>ISSN: 0939-6314</identifier><identifier>EISSN: 1617-6278</identifier><identifier>DOI: 10.1007/s00334-008-0203-5</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer</publisher><subject>Anthropology ; Archaeology ; Biogeosciences ; Biosphere ; Brackish water ; Climate Change ; Climatic fluctuations ; Coastal environments ; Deltas ; Earth and Environmental Science ; Earth Sciences ; Earth, ocean, space ; Ecosystems ; Environmental changes ; Estuaries ; Estuarine environments ; Exact sciences and technology ; Forest management ; Geochronology ; Habitat loss ; Harbors ; Herbs ; Holocene ; Isotope geochemistry. Geochronology ; Mangrove forests ; Mangrove swamps ; Marine and continental quaternary ; Marine ecosystems ; Marine sediment cores ; Original Article ; Paleo-sea level ; Paleobotany ; Paleoceanography ; Paleontology ; Palynology ; Pollen ; Pollen analysis ; River deltas ; Sea level ; Sea level fluctuations ; Sedimentation ; Sedimentation & deposition ; Sediments ; Stratigraphy ; Surficial geology ; Taxa ; Variation ; Vegetation</subject><ispartof>Vegetation history and archaeobotany, 2009-03, Vol.18 (2), p.159-169</ispartof><rights>The Author(s) 2008</rights><rights>2009 INIST-CNRS</rights><rights>Vegetation History and Archaeobotany is a copyright of Springer, (2008). All Rights Reserved. © 2008. This work is published under https://creativecommons.org/licenses/by-nc/2.0 (the “License”). 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This biosphere reserve harbours a diverse mangrove ecosystem and supports a large number of people living in the area. Pollen and stratigraphic data indicate the existence of a brackish water estuarine mangrove swamp forest in this area during the last 9880 cal yr B.P. The development of the mangrove forest is not shown continuously in the Holocene record. Rapid transgression of the sea (9240 cal yr B.P.) halted the development of the mangrove. After about 8420 cal yr B.P. mangrove recolonised the area and persisted until 7560 cal yr B.P. as a result of a balance between the sedimentation and sea level fluctuation. The mangrove disappeared again from the site until 4800 cal yr B.P. because of a high sedimentation rate and possible delta progradation with loss of habitats. The reappearance of mangrove at the study site occurred with a return of a brackish water estuarine environment and the site then gradually became supra tidal during the mid-late Holocene. The continuity of the mangrove development and dynamics was interrupted by the fluctuating sea levels. Climatic fluctuations were viewed as an indirect factor influencing the mangrove ecosystem.</description><subject>Anthropology</subject><subject>Archaeology</subject><subject>Biogeosciences</subject><subject>Biosphere</subject><subject>Brackish water</subject><subject>Climate Change</subject><subject>Climatic fluctuations</subject><subject>Coastal environments</subject><subject>Deltas</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Earth, ocean, space</subject><subject>Ecosystems</subject><subject>Environmental changes</subject><subject>Estuaries</subject><subject>Estuarine environments</subject><subject>Exact sciences and technology</subject><subject>Forest management</subject><subject>Geochronology</subject><subject>Habitat loss</subject><subject>Harbors</subject><subject>Herbs</subject><subject>Holocene</subject><subject>Isotope geochemistry. 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Geochronology</topic><topic>Mangrove forests</topic><topic>Mangrove swamps</topic><topic>Marine and continental quaternary</topic><topic>Marine ecosystems</topic><topic>Marine sediment cores</topic><topic>Original Article</topic><topic>Paleo-sea level</topic><topic>Paleobotany</topic><topic>Paleoceanography</topic><topic>Paleontology</topic><topic>Palynology</topic><topic>Pollen</topic><topic>Pollen analysis</topic><topic>River deltas</topic><topic>Sea level</topic><topic>Sea level fluctuations</topic><topic>Sedimentation</topic><topic>Sedimentation & deposition</topic><topic>Sediments</topic><topic>Stratigraphy</topic><topic>Surficial geology</topic><topic>Taxa</topic><topic>Variation</topic><topic>Vegetation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hait, Arghya K.</creatorcontrib><creatorcontrib>Behling, Hermann</creatorcontrib><collection>Springer Nature OA Free Journals</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Agricultural Science Collection</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Biological Science Collection</collection><collection>Agricultural Science Database</collection><collection>Biological Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><jtitle>Vegetation history and archaeobotany</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hait, Arghya K.</au><au>Behling, Hermann</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Holocene mangrove and coastal environmental changes in the western Ganga—Brahmaputra Delta, India</atitle><jtitle>Vegetation history and archaeobotany</jtitle><stitle>Veget Hist Archaeobot</stitle><date>2009-03-01</date><risdate>2009</risdate><volume>18</volume><issue>2</issue><spage>159</spage><epage>169</epage><pages>159-169</pages><issn>0939-6314</issn><eissn>1617-6278</eissn><abstract>A 50 m-long radiocarbon dated core was studied through sediment and pollen analysis to reconstruct the Holocene mangrove and environmental changes at a coastal site Pakhiralaya in the Sundarban Biosphere Reserve in the western Ganga—Brahmaputra Delta, India. This biosphere reserve harbours a diverse mangrove ecosystem and supports a large number of people living in the area. Pollen and stratigraphic data indicate the existence of a brackish water estuarine mangrove swamp forest in this area during the last 9880 cal yr B.P. The development of the mangrove forest is not shown continuously in the Holocene record. Rapid transgression of the sea (9240 cal yr B.P.) halted the development of the mangrove. After about 8420 cal yr B.P. mangrove recolonised the area and persisted until 7560 cal yr B.P. as a result of a balance between the sedimentation and sea level fluctuation. The mangrove disappeared again from the site until 4800 cal yr B.P. because of a high sedimentation rate and possible delta progradation with loss of habitats. The reappearance of mangrove at the study site occurred with a return of a brackish water estuarine environment and the site then gradually became supra tidal during the mid-late Holocene. The continuity of the mangrove development and dynamics was interrupted by the fluctuating sea levels. Climatic fluctuations were viewed as an indirect factor influencing the mangrove ecosystem.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer</pub><doi>10.1007/s00334-008-0203-5</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Anthropology Archaeology Biogeosciences Biosphere Brackish water Climate Change Climatic fluctuations Coastal environments Deltas Earth and Environmental Science Earth Sciences Earth, ocean, space Ecosystems Environmental changes Estuaries Estuarine environments Exact sciences and technology Forest management Geochronology Habitat loss Harbors Herbs Holocene Isotope geochemistry. Geochronology Mangrove forests Mangrove swamps Marine and continental quaternary Marine ecosystems Marine sediment cores Original Article Paleo-sea level Paleobotany Paleoceanography Paleontology Palynology Pollen Pollen analysis River deltas Sea level Sea level fluctuations Sedimentation Sedimentation & deposition Sediments Stratigraphy Surficial geology Taxa Variation Vegetation |
| title | Holocene mangrove and coastal environmental changes in the western Ganga—Brahmaputra Delta, India |
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