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Variability of sedimentary organic carbon in patchy seagrass landscapes

Ricart, Aurora M., York, Paul H., Rasheed, Michael A., Pérez, Marta, Romero, Javier, Bryant, Catherine V. and Macreadie, Peter I. 2015, Variability of sedimentary organic carbon in patchy seagrass landscapes, Marine pollution bulletin, vol. 100, no. 1, pp. 476-482, doi: 10.1016/j.marpolbul.2015.09.032.

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Title Variability of sedimentary organic carbon in patchy seagrass landscapes
Author(s) Ricart, Aurora M.
York, Paul H.
Rasheed, Michael A.
Pérez, Marta
Romero, Javier
Bryant, Catherine V.
Macreadie, Peter I.ORCID iD for Macreadie, Peter I. orcid.org/0000-0001-7362-0882
Journal name Marine pollution bulletin
Volume number 100
Issue number 1
Start page 476
End page 482
Total pages 7
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2015-11-15
ISSN 1879-3363
Keyword(s) Blue carbon
Carbon stock
Climate change
Marine sediment
Patchiness
Zostera muelleri
Summary Seagrass ecosystems, considered among the most efficient carbon sinks worldwide, encompass a wide variety of spatial configurations in the coastal landscape. Here we evaluated the influence of the spatial configuration of seagrass meadows at small scales (metres) on carbon storage in seagrass sediments. We intensively sampled carbon stocks and other geochemical properties (δ(13)C, particle size, depositional fluxes) across seagrass-sand edges in a Zostera muelleri patchy seagrass landscape. Carbon stocks were significantly higher (ca. 20%) inside seagrass patches than at seagrass-sand edges and bare sediments. Deposition was similar among all positions and most of the carbon was from allochthonous sources. Patch level attributes (e.g. edge distance) represent important determinants of the spatial heterogeneity of carbon stocks within seagrass ecosystems. Our findings indicate that carbon stocks of seagrass areas have likely been overestimated by not considering the influence of meadow landscapes, and have important relevance for the design of seagrass carbon stock assessments.
Language eng
DOI 10.1016/j.marpolbul.2015.09.032
Field of Research 060205 Marine and Estuarine Ecology (incl Marine Ichthyology)
Socio Economic Objective 960903 Coastal and Estuarine Water Management
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30079932

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