Faunal mediated carbon export from mangroves in an arid area
<p dir="ltr">The outwelling paradigm argues that mangrove and saltmarsh wetlands export much excess production to downstream marine systems. However, outwelling is difficult to quantify and currently 40–50% of fixed carbon is unaccounted for. Some carbon is thought outwelled through...
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| مؤلفون آخرون: | , , , , , |
| منشور في: |
2021
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| الموضوعات: | |
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| _version_ | 1864513555053674496 |
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| author | M.E.M. Walton (17092969) |
| author2 | I. Al-Maslamani (17092972) M. Chatting (17092975) D. Smyth (17092978) A. Castillo (11780621) M.W. Skov (17092981) L. Le Vay (17092984) |
| author2_role | author author author author author author |
| author_facet | M.E.M. Walton (17092969) I. Al-Maslamani (17092972) M. Chatting (17092975) D. Smyth (17092978) A. Castillo (11780621) M.W. Skov (17092981) L. Le Vay (17092984) |
| author_role | author |
| dc.creator.none.fl_str_mv | M.E.M. Walton (17092969) I. Al-Maslamani (17092972) M. Chatting (17092975) D. Smyth (17092978) A. Castillo (11780621) M.W. Skov (17092981) L. Le Vay (17092984) |
| dc.date.none.fl_str_mv | 2021-02-10T00:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1016/j.scitotenv.2020.142677 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Faunal_mediated_carbon_export_from_mangroves_in_an_arid_area/24242548 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Environmental engineering Environmental sciences Pollution and contamination Trophic relay Mangrove Carbon budget Outwelling hypothesis Mangrove litter Carbon flux Fish Food webs |
| dc.title.none.fl_str_mv | Faunal mediated carbon export from mangroves in an arid area |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">The outwelling paradigm argues that mangrove and saltmarsh wetlands export much excess production to downstream marine systems. However, outwelling is difficult to quantify and currently 40–50% of fixed carbon is unaccounted for. Some carbon is thought outwelled through mobile fauna, including fish, which visit and feed on mangrove produce during tidal inundation or early life stages before moving offshore, yet this pathway for carbon outwelling has never been quantified. We studied faunal carbon outwelling in three arid mangroves, where sharp isotopic gradients across the boundary between mangroves and down-stream systems permitted spatial differentiation of source of carbon in animal tissue. Stable isotope analysis (C, N, S) revealed 22–56% of the tissue of tidally migrating fauna was mangrove derived. Estimated consumption rates showed that 1.4% (38 kg C ha<sup>−1</sup> yr<sup>−1</sup>) of annual mangrove litter production was directly consumed by migratory fauna, with <1% potentially exported. We predict that the amount of faunally-outwelled carbon is likely to be highly correlated with biomass of migratory fauna. While this may vary globally, the measured migratory fauna biomass in these arid mangroves was within the range of observations for mangroves across diverse biogeographic ranges and environmental settings. Hence, this study provides a generalized prediction of the relatively weak contribution of faunal migration to carbon outwelling from mangroves and the current proposition, that the unaccounted-for 40–50% of mangrove C is exported as dissolved inorganic carbon, remains plausible.</p><h2>Other Information</h2><p dir="ltr">Published in: Science of The Total Environment<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.scitotenv.2020.142677" target="_blank">https://dx.doi.org/10.1016/j.scitotenv.2020.142677</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_5e9d6c35bf93f201fced30d4693fe300 |
| identifier_str_mv | 10.1016/j.scitotenv.2020.142677 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/24242548 |
| publishDate | 2021 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Faunal mediated carbon export from mangroves in an arid areaM.E.M. Walton (17092969)I. Al-Maslamani (17092972)M. Chatting (17092975)D. Smyth (17092978)A. Castillo (11780621)M.W. Skov (17092981)L. Le Vay (17092984)EngineeringEnvironmental engineeringEnvironmental sciencesPollution and contaminationTrophic relayMangroveCarbon budgetOutwelling hypothesisMangrove litterCarbon fluxFishFood webs<p dir="ltr">The outwelling paradigm argues that mangrove and saltmarsh wetlands export much excess production to downstream marine systems. However, outwelling is difficult to quantify and currently 40–50% of fixed carbon is unaccounted for. Some carbon is thought outwelled through mobile fauna, including fish, which visit and feed on mangrove produce during tidal inundation or early life stages before moving offshore, yet this pathway for carbon outwelling has never been quantified. We studied faunal carbon outwelling in three arid mangroves, where sharp isotopic gradients across the boundary between mangroves and down-stream systems permitted spatial differentiation of source of carbon in animal tissue. Stable isotope analysis (C, N, S) revealed 22–56% of the tissue of tidally migrating fauna was mangrove derived. Estimated consumption rates showed that 1.4% (38 kg C ha<sup>−1</sup> yr<sup>−1</sup>) of annual mangrove litter production was directly consumed by migratory fauna, with <1% potentially exported. We predict that the amount of faunally-outwelled carbon is likely to be highly correlated with biomass of migratory fauna. While this may vary globally, the measured migratory fauna biomass in these arid mangroves was within the range of observations for mangroves across diverse biogeographic ranges and environmental settings. Hence, this study provides a generalized prediction of the relatively weak contribution of faunal migration to carbon outwelling from mangroves and the current proposition, that the unaccounted-for 40–50% of mangrove C is exported as dissolved inorganic carbon, remains plausible.</p><h2>Other Information</h2><p dir="ltr">Published in: Science of The Total Environment<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.scitotenv.2020.142677" target="_blank">https://dx.doi.org/10.1016/j.scitotenv.2020.142677</a></p>2021-02-10T00:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1016/j.scitotenv.2020.142677https://figshare.com/articles/journal_contribution/Faunal_mediated_carbon_export_from_mangroves_in_an_arid_area/24242548CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/242425482021-02-10T00:00:00Z |
| spellingShingle | Faunal mediated carbon export from mangroves in an arid area M.E.M. Walton (17092969) Engineering Environmental engineering Environmental sciences Pollution and contamination Trophic relay Mangrove Carbon budget Outwelling hypothesis Mangrove litter Carbon flux Fish Food webs |
| status_str | publishedVersion |
| title | Faunal mediated carbon export from mangroves in an arid area |
| title_full | Faunal mediated carbon export from mangroves in an arid area |
| title_fullStr | Faunal mediated carbon export from mangroves in an arid area |
| title_full_unstemmed | Faunal mediated carbon export from mangroves in an arid area |
| title_short | Faunal mediated carbon export from mangroves in an arid area |
| title_sort | Faunal mediated carbon export from mangroves in an arid area |
| topic | Engineering Environmental engineering Environmental sciences Pollution and contamination Trophic relay Mangrove Carbon budget Outwelling hypothesis Mangrove litter Carbon flux Fish Food webs |