Late glacial initiation of Holocene eastern Mediterranean sapropel formation
Recurrent deposition of organic-rich sediment layers (sapropels) in the eastern Mediterranean Sea is caused by complex interactions between climatic and biogeochemical processes. Disentangling these influences is therefore important for Mediterranean palaeo-studies in particular, and for understandi...
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creator | Grimm, Rosina Maier-Reimer, Ernst Mikolajewicz, Uwe Schmiedl, Gerhard Müller-Navarra, Katharina Adloff, Fanny Grant, Katharine M. Ziegler, Martin Lourens, Lucas J. Emeis, Kay-Christian |
description | Recurrent deposition of organic-rich sediment layers (sapropels) in the eastern Mediterranean Sea is caused by complex interactions between climatic and biogeochemical processes. Disentangling these influences is therefore important for Mediterranean palaeo-studies in particular, and for understanding ocean feedback processes in general. Crucially, sapropels are diagnostic of anoxic deep-water phases, which have been attributed to deep-water stagnation, enhanced biological production or both. Here we use an ocean-biogeochemical model to test the effects of commonly proposed climatic and biogeochemical causes for sapropel S1. Our results indicate that deep-water anoxia requires a long prelude of deep-water stagnation, with no particularly strong eutrophication. The model-derived time frame agrees with foraminiferal δ
13
C records that imply cessation of deep-water renewal from at least Heinrich event 1 to the early Holocene. The simulated low particulate organic carbon burial flux agrees with pre-sapropel reconstructions. Our results offer a mechanistic explanation of glacial–interglacial influence on sapropel formation.
Numerous theories exist regarding the evolution of a deep-water oxygen deficiency in the eastern Mediterranean Sea. Here, the authors test several popular hypotheses with a focus on the S1 event showing that long-term stagnation was necessary, preconditioned by the changes associated with the last deglaciation. |
doi_str_mv | 10.1038/ncomms8099 |
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13
C records that imply cessation of deep-water renewal from at least Heinrich event 1 to the early Holocene. The simulated low particulate organic carbon burial flux agrees with pre-sapropel reconstructions. Our results offer a mechanistic explanation of glacial–interglacial influence on sapropel formation.
Numerous theories exist regarding the evolution of a deep-water oxygen deficiency in the eastern Mediterranean Sea. Here, the authors test several popular hypotheses with a focus on the S1 event showing that long-term stagnation was necessary, preconditioned by the changes associated with the last deglaciation.</description><identifier>ISSN: 2041-1723</identifier><identifier>EISSN: 2041-1723</identifier><identifier>DOI: 10.1038/ncomms8099</identifier><identifier>PMID: 26028337</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>704/106/2738 ; 704/106/47 ; 704/106/694/1108 ; 704/2151/3930 ; Benzopyrans ; Biogeochemistry ; Carbon Cycle ; Earth science ; Foraminifera ; Geologic Sediments ; Humanities and Social Sciences ; Humic Substances ; Ice Cover ; Mediterranean Sea ; Models, Theoretical ; multidisciplinary ; Ocean circulation ; Oxygen ; Radiometric Dating ; Science ; Science (multidisciplinary) ; Seawater - chemistry ; Sediments</subject><ispartof>Nature communications, 2015-06, Vol.6 (1), p.7099-7099, Article 7099</ispartof><rights>Springer Nature Limited 2015</rights><rights>Copyright Nature Publishing Group Jun 2015</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c453t-72d7d5024f69ff6a5b7a02ef05a8dd9ce8e7fd4d34c6887d8bee14183cfb80143</citedby><cites>FETCH-LOGICAL-c453t-72d7d5024f69ff6a5b7a02ef05a8dd9ce8e7fd4d34c6887d8bee14183cfb80143</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1038/ncomms8099$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://doi.org/10.1038/ncomms8099$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,864,27924,27925,41120,42189,51576</link.rule.ids><linktorsrc>$$Uhttps://doi.org/10.1038/ncomms8099$$EView_record_in_Springer_Nature$$FView_record_in_$$GSpringer_Nature</linktorsrc><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26028337$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Grimm, Rosina</creatorcontrib><creatorcontrib>Maier-Reimer, Ernst</creatorcontrib><creatorcontrib>Mikolajewicz, Uwe</creatorcontrib><creatorcontrib>Schmiedl, Gerhard</creatorcontrib><creatorcontrib>Müller-Navarra, Katharina</creatorcontrib><creatorcontrib>Adloff, Fanny</creatorcontrib><creatorcontrib>Grant, Katharine M.</creatorcontrib><creatorcontrib>Ziegler, Martin</creatorcontrib><creatorcontrib>Lourens, Lucas J.</creatorcontrib><creatorcontrib>Emeis, Kay-Christian</creatorcontrib><title>Late glacial initiation of Holocene eastern Mediterranean sapropel formation</title><title>Nature communications</title><addtitle>Nat Commun</addtitle><addtitle>Nat Commun</addtitle><description>Recurrent deposition of organic-rich sediment layers (sapropels) in the eastern Mediterranean Sea is caused by complex interactions between climatic and biogeochemical processes. Disentangling these influences is therefore important for Mediterranean palaeo-studies in particular, and for understanding ocean feedback processes in general. Crucially, sapropels are diagnostic of anoxic deep-water phases, which have been attributed to deep-water stagnation, enhanced biological production or both. Here we use an ocean-biogeochemical model to test the effects of commonly proposed climatic and biogeochemical causes for sapropel S1. Our results indicate that deep-water anoxia requires a long prelude of deep-water stagnation, with no particularly strong eutrophication. The model-derived time frame agrees with foraminiferal δ
13
C records that imply cessation of deep-water renewal from at least Heinrich event 1 to the early Holocene. The simulated low particulate organic carbon burial flux agrees with pre-sapropel reconstructions. Our results offer a mechanistic explanation of glacial–interglacial influence on sapropel formation.
Numerous theories exist regarding the evolution of a deep-water oxygen deficiency in the eastern Mediterranean Sea. 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Academic</collection><jtitle>Nature communications</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Grimm, Rosina</au><au>Maier-Reimer, Ernst</au><au>Mikolajewicz, Uwe</au><au>Schmiedl, Gerhard</au><au>Müller-Navarra, Katharina</au><au>Adloff, Fanny</au><au>Grant, Katharine M.</au><au>Ziegler, Martin</au><au>Lourens, Lucas J.</au><au>Emeis, Kay-Christian</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Late glacial initiation of Holocene eastern Mediterranean sapropel formation</atitle><jtitle>Nature communications</jtitle><stitle>Nat Commun</stitle><addtitle>Nat Commun</addtitle><date>2015-06-01</date><risdate>2015</risdate><volume>6</volume><issue>1</issue><spage>7099</spage><epage>7099</epage><pages>7099-7099</pages><artnum>7099</artnum><issn>2041-1723</issn><eissn>2041-1723</eissn><abstract>Recurrent deposition of organic-rich sediment layers (sapropels) in the eastern Mediterranean Sea is caused by complex interactions between climatic and biogeochemical processes. Disentangling these influences is therefore important for Mediterranean palaeo-studies in particular, and for understanding ocean feedback processes in general. Crucially, sapropels are diagnostic of anoxic deep-water phases, which have been attributed to deep-water stagnation, enhanced biological production or both. Here we use an ocean-biogeochemical model to test the effects of commonly proposed climatic and biogeochemical causes for sapropel S1. Our results indicate that deep-water anoxia requires a long prelude of deep-water stagnation, with no particularly strong eutrophication. The model-derived time frame agrees with foraminiferal δ
13
C records that imply cessation of deep-water renewal from at least Heinrich event 1 to the early Holocene. The simulated low particulate organic carbon burial flux agrees with pre-sapropel reconstructions. Our results offer a mechanistic explanation of glacial–interglacial influence on sapropel formation.
Numerous theories exist regarding the evolution of a deep-water oxygen deficiency in the eastern Mediterranean Sea. Here, the authors test several popular hypotheses with a focus on the S1 event showing that long-term stagnation was necessary, preconditioned by the changes associated with the last deglaciation.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>26028337</pmid><doi>10.1038/ncomms8099</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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subjects | 704/106/2738 704/106/47 704/106/694/1108 704/2151/3930 Benzopyrans Biogeochemistry Carbon Cycle Earth science Foraminifera Geologic Sediments Humanities and Social Sciences Humic Substances Ice Cover Mediterranean Sea Models, Theoretical multidisciplinary Ocean circulation Oxygen Radiometric Dating Science Science (multidisciplinary) Seawater - chemistry Sediments |
title | Late glacial initiation of Holocene eastern Mediterranean sapropel formation |
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