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Strong macrobenthic community differentiation among sub-Arctic deep fjords on small spatial scales
Fjords play an important role in carbon cycling and sequestration, but the burial of organic matter in sediments strongly depends on the composition of macrobenthic communities. We studied three deep, sub-Arctic fjords located in northern Norway to assess the community differentiation of neighbourin...
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| Published in: | Estuarine, coastal and shelf science coastal and shelf science, 2021-05, Vol.252, p.107271, Article 107271 |
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| Language: | English |
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| container_start_page | 107271 |
| container_title | Estuarine, coastal and shelf science |
| container_volume | 252 |
| creator | Kokarev, Valentin Tachon, Mathieu Austad, Marthe McGovern, Maeve Reiss, Henning |
| description | Fjords play an important role in carbon cycling and sequestration, but the burial of organic matter in sediments strongly depends on the composition of macrobenthic communities. We studied three deep, sub-Arctic fjords located in northern Norway to assess the community differentiation of neighbouring fjords and the underlying environmental drivers. The fjords have relatively deep depositional basins (370–570 m), but they differ in sill depth and water exchange. In all fjords studied, the silty sediments were characterised by organic matter of mostly marine origin. We found that each basin was inhabited by a distinct benthic community, with pronounced differences in total abundance, biomass and species diversity. Only in one fjord (Skjerstadfjord), with a shallow sill, a slight mouth-to-head pattern of the community was found. The strong differentiation of macrobenthos among different fjords seems not to be directly associated with environmental drivers such as organic matter input, water masses or depth.
•Three sub-Arctic fjords with deep basins (>350 m) were studied.•Each basin was inhabited by a distinct macrobenthic community.•Within-fjord variation was little and mainly related to organic matter supply.•Sill depth affected water exchange and macrofaunal composition.•Stochastic processes are proposed as a driver for among-fjord variation. |
| doi_str_mv | 10.1016/j.ecss.2021.107271 |
| format | article |
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•Three sub-Arctic fjords with deep basins (>350 m) were studied.•Each basin was inhabited by a distinct macrobenthic community.•Within-fjord variation was little and mainly related to organic matter supply.•Sill depth affected water exchange and macrofaunal composition.•Stochastic processes are proposed as a driver for among-fjord variation.</description><identifier>ISSN: 0272-7714</identifier><identifier>ISSN: 1096-0015</identifier><identifier>EISSN: 1096-0015</identifier><identifier>DOI: 10.1016/j.ecss.2021.107271</identifier><language>eng</language><publisher>Elsevier Ltd</publisher><subject>Infauna ; Macrofauna ; Marinbiologi: 497 ; Marine biology: 497 ; Matematikk og Naturvitenskap: 400 ; Mathematics and natural science: 400 ; Norwegian coast ; Organic matter ; Saltfjord ; Skjerstadfjord ; Sørfolda ; VDP ; Vestfjord ; Zoologiske og botaniske fag: 480 ; Zoology and botany: 480</subject><ispartof>Estuarine, coastal and shelf science, 2021-05, Vol.252, p.107271, Article 107271</ispartof><rights>2021 The Authors</rights><rights>info:eu-repo/semantics/openAccess</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c368t-23c3e9330b5146ea907b2eeb131834f25b0cce2568e1dbe13099ee29922c690c3</citedby><cites>FETCH-LOGICAL-c368t-23c3e9330b5146ea907b2eeb131834f25b0cce2568e1dbe13099ee29922c690c3</cites><orcidid>0000-0003-1484-9745 ; 0000-0002-9644-0179 ; 0000-0002-9954-1354</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,315,786,790,891,26600,27957,27958</link.rule.ids></links><search><creatorcontrib>Kokarev, Valentin</creatorcontrib><creatorcontrib>Tachon, Mathieu</creatorcontrib><creatorcontrib>Austad, Marthe</creatorcontrib><creatorcontrib>McGovern, Maeve</creatorcontrib><creatorcontrib>Reiss, Henning</creatorcontrib><title>Strong macrobenthic community differentiation among sub-Arctic deep fjords on small spatial scales</title><title>Estuarine, coastal and shelf science</title><description>Fjords play an important role in carbon cycling and sequestration, but the burial of organic matter in sediments strongly depends on the composition of macrobenthic communities. We studied three deep, sub-Arctic fjords located in northern Norway to assess the community differentiation of neighbouring fjords and the underlying environmental drivers. The fjords have relatively deep depositional basins (370–570 m), but they differ in sill depth and water exchange. In all fjords studied, the silty sediments were characterised by organic matter of mostly marine origin. We found that each basin was inhabited by a distinct benthic community, with pronounced differences in total abundance, biomass and species diversity. Only in one fjord (Skjerstadfjord), with a shallow sill, a slight mouth-to-head pattern of the community was found. The strong differentiation of macrobenthos among different fjords seems not to be directly associated with environmental drivers such as organic matter input, water masses or depth.
•Three sub-Arctic fjords with deep basins (>350 m) were studied.•Each basin was inhabited by a distinct macrobenthic community.•Within-fjord variation was little and mainly related to organic matter supply.•Sill depth affected water exchange and macrofaunal composition.•Stochastic processes are proposed as a driver for among-fjord variation.</description><subject>Infauna</subject><subject>Macrofauna</subject><subject>Marinbiologi: 497</subject><subject>Marine biology: 497</subject><subject>Matematikk og Naturvitenskap: 400</subject><subject>Mathematics and natural science: 400</subject><subject>Norwegian coast</subject><subject>Organic matter</subject><subject>Saltfjord</subject><subject>Skjerstadfjord</subject><subject>Sørfolda</subject><subject>VDP</subject><subject>Vestfjord</subject><subject>Zoologiske og botaniske fag: 480</subject><subject>Zoology and botany: 480</subject><issn>0272-7714</issn><issn>1096-0015</issn><issn>1096-0015</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>3HK</sourceid><recordid>eNp9kMtKBDEQRYMoOI7-gBv7B3pMJf2YgJth8AUDLtR1SKqrNU0_hiQj-PemGd26Krh1blEcxq6Br4BDddutCENYCS4gBbWo4YQtgKsq5xzKU7bgohZ5XUNxzi5C6FIKpRQLZl-jn8aPbDDoJ0tj_HSY4TQMh9HF76xxbUs-xc5EN42ZGWY4HGy-8RgT2hDts7abfBOytA-D6fss7BNt0kTTU7hkZ63pA139ziV7f7h_2z7lu5fH5-1ml6Os1jEXEiUpKbktoajIKF5bQWRBwloWrSgtRyRRVmuCxhJIrhSRUEoIrBRHuWQ3x7voXYhu1OPkjQbOZa0FKF4kQvwRUwieWr33bjD-O1F69qg7PXvUs0d99JhKd8cSpd-_HHkd0NGI1DhPGHUzuf_qPwRXe80</recordid><startdate>20210505</startdate><enddate>20210505</enddate><creator>Kokarev, Valentin</creator><creator>Tachon, Mathieu</creator><creator>Austad, Marthe</creator><creator>McGovern, Maeve</creator><creator>Reiss, Henning</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>6I.</scope><scope>AAFTH</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3HK</scope><orcidid>https://orcid.org/0000-0003-1484-9745</orcidid><orcidid>https://orcid.org/0000-0002-9644-0179</orcidid><orcidid>https://orcid.org/0000-0002-9954-1354</orcidid></search><sort><creationdate>20210505</creationdate><title>Strong macrobenthic community differentiation among sub-Arctic deep fjords on small spatial scales</title><author>Kokarev, Valentin ; Tachon, Mathieu ; Austad, Marthe ; McGovern, Maeve ; Reiss, Henning</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c368t-23c3e9330b5146ea907b2eeb131834f25b0cce2568e1dbe13099ee29922c690c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Infauna</topic><topic>Macrofauna</topic><topic>Marinbiologi: 497</topic><topic>Marine biology: 497</topic><topic>Matematikk og Naturvitenskap: 400</topic><topic>Mathematics and natural science: 400</topic><topic>Norwegian coast</topic><topic>Organic matter</topic><topic>Saltfjord</topic><topic>Skjerstadfjord</topic><topic>Sørfolda</topic><topic>VDP</topic><topic>Vestfjord</topic><topic>Zoologiske og botaniske fag: 480</topic><topic>Zoology and botany: 480</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kokarev, Valentin</creatorcontrib><creatorcontrib>Tachon, Mathieu</creatorcontrib><creatorcontrib>Austad, Marthe</creatorcontrib><creatorcontrib>McGovern, Maeve</creatorcontrib><creatorcontrib>Reiss, Henning</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>CrossRef</collection><collection>NORA - Norwegian Open Research Archives</collection><jtitle>Estuarine, coastal and shelf science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kokarev, Valentin</au><au>Tachon, Mathieu</au><au>Austad, Marthe</au><au>McGovern, Maeve</au><au>Reiss, Henning</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Strong macrobenthic community differentiation among sub-Arctic deep fjords on small spatial scales</atitle><jtitle>Estuarine, coastal and shelf science</jtitle><date>2021-05-05</date><risdate>2021</risdate><volume>252</volume><spage>107271</spage><pages>107271-</pages><artnum>107271</artnum><issn>0272-7714</issn><issn>1096-0015</issn><eissn>1096-0015</eissn><notes>Estuarine, Coastal and Shelf Science</notes><abstract>Fjords play an important role in carbon cycling and sequestration, but the burial of organic matter in sediments strongly depends on the composition of macrobenthic communities. We studied three deep, sub-Arctic fjords located in northern Norway to assess the community differentiation of neighbouring fjords and the underlying environmental drivers. The fjords have relatively deep depositional basins (370–570 m), but they differ in sill depth and water exchange. In all fjords studied, the silty sediments were characterised by organic matter of mostly marine origin. We found that each basin was inhabited by a distinct benthic community, with pronounced differences in total abundance, biomass and species diversity. Only in one fjord (Skjerstadfjord), with a shallow sill, a slight mouth-to-head pattern of the community was found. The strong differentiation of macrobenthos among different fjords seems not to be directly associated with environmental drivers such as organic matter input, water masses or depth.
•Three sub-Arctic fjords with deep basins (>350 m) were studied.•Each basin was inhabited by a distinct macrobenthic community.•Within-fjord variation was little and mainly related to organic matter supply.•Sill depth affected water exchange and macrofaunal composition.•Stochastic processes are proposed as a driver for among-fjord variation.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.ecss.2021.107271</doi><orcidid>https://orcid.org/0000-0003-1484-9745</orcidid><orcidid>https://orcid.org/0000-0002-9644-0179</orcidid><orcidid>https://orcid.org/0000-0002-9954-1354</orcidid><oa>free_for_read</oa></addata></record> |
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| ispartof | Estuarine, coastal and shelf science, 2021-05, Vol.252, p.107271, Article 107271 |
| issn | 0272-7714 1096-0015 1096-0015 |
| language | eng |
| recordid | cdi_cristin_nora_10037_21904 |
| source | ScienceDirect Freedom Collection; NORA - Norwegian Open Research Archives |
| subjects | Infauna Macrofauna Marinbiologi: 497 Marine biology: 497 Matematikk og Naturvitenskap: 400 Mathematics and natural science: 400 Norwegian coast Organic matter Saltfjord Skjerstadfjord Sørfolda VDP Vestfjord Zoologiske og botaniske fag: 480 Zoology and botany: 480 |
| title | Strong macrobenthic community differentiation among sub-Arctic deep fjords on small spatial scales |
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