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Mediation of macronutrients and carbon by post-disturbance shelf sea sediment communities

Benthic communities play a major role in organic matter remineralisation and the mediation of many aspects of shelf sea biogeochemistry. Few studies have considered how changes in community structure associated with different levels of physical disturbance affect sediment macronutrients and carbon f...

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Autores principales: Hale, Rachel, Godbold, Jasmin A., Sciberras, Marija, Dwight, Jessica, Wood, Christina, Hiddink, Jan G., Solan, Martin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer International Publishing 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6961522/
https://www.ncbi.nlm.nih.gov/pubmed/32009694
http://dx.doi.org/10.1007/s10533-017-0350-9
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author Hale, Rachel
Godbold, Jasmin A.
Sciberras, Marija
Dwight, Jessica
Wood, Christina
Hiddink, Jan G.
Solan, Martin
author_facet Hale, Rachel
Godbold, Jasmin A.
Sciberras, Marija
Dwight, Jessica
Wood, Christina
Hiddink, Jan G.
Solan, Martin
author_sort Hale, Rachel
collection PubMed
description Benthic communities play a major role in organic matter remineralisation and the mediation of many aspects of shelf sea biogeochemistry. Few studies have considered how changes in community structure associated with different levels of physical disturbance affect sediment macronutrients and carbon following the cessation of disturbance. Here, we investigate how faunal activity (sediment particle reworking and bioirrigation) in communities that have survived contrasting levels of bottom fishing affect sediment organic carbon content and macronutrient concentrations ([NH(4)–N], [NO(2)–N], [NO(3)–N], [PO(4)–P], [SiO(4)–Si]). We find that organic carbon content and [NO(3)–N] decline in cohesive sediment communities that have experienced an increased frequency of fishing, whilst [NH(4)–N], [NO(2)–N], [PO(4)–P] and [SiO(4)–Si] are not affected. [NH(4)–N] increases in non-cohesive sediments that have experienced a higher frequency of fishing. Further analyses reveal that the way communities are restructured by physical disturbance differs between sediment type and with fishing frequency, but that changes in community structure do little to affect bioturbation and associated levels of organic carbon and nutrient concentrations. Our results suggest that in the presence of physical disturbance, irrespective of sediment type, the mediation of macronutrient and carbon cycling increasingly reflects the decoupling of organism-sediment relations. Indeed, it is the traits of the species that reside at the sediment–water interface, or that occupy deeper parts of the sediment profile, that are disproportionately expressed post-disturbance, that are most important for sustaining biogeochemical functioning. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s10533-017-0350-9) contains supplementary material, which is available to authorized users.
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spelling pubmed-69615222020-01-29 Mediation of macronutrients and carbon by post-disturbance shelf sea sediment communities Hale, Rachel Godbold, Jasmin A. Sciberras, Marija Dwight, Jessica Wood, Christina Hiddink, Jan G. Solan, Martin Biogeochemistry Article Benthic communities play a major role in organic matter remineralisation and the mediation of many aspects of shelf sea biogeochemistry. Few studies have considered how changes in community structure associated with different levels of physical disturbance affect sediment macronutrients and carbon following the cessation of disturbance. Here, we investigate how faunal activity (sediment particle reworking and bioirrigation) in communities that have survived contrasting levels of bottom fishing affect sediment organic carbon content and macronutrient concentrations ([NH(4)–N], [NO(2)–N], [NO(3)–N], [PO(4)–P], [SiO(4)–Si]). We find that organic carbon content and [NO(3)–N] decline in cohesive sediment communities that have experienced an increased frequency of fishing, whilst [NH(4)–N], [NO(2)–N], [PO(4)–P] and [SiO(4)–Si] are not affected. [NH(4)–N] increases in non-cohesive sediments that have experienced a higher frequency of fishing. Further analyses reveal that the way communities are restructured by physical disturbance differs between sediment type and with fishing frequency, but that changes in community structure do little to affect bioturbation and associated levels of organic carbon and nutrient concentrations. Our results suggest that in the presence of physical disturbance, irrespective of sediment type, the mediation of macronutrient and carbon cycling increasingly reflects the decoupling of organism-sediment relations. Indeed, it is the traits of the species that reside at the sediment–water interface, or that occupy deeper parts of the sediment profile, that are disproportionately expressed post-disturbance, that are most important for sustaining biogeochemical functioning. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s10533-017-0350-9) contains supplementary material, which is available to authorized users. Springer International Publishing 2017-06-12 2017 /pmc/articles/PMC6961522/ /pubmed/32009694 http://dx.doi.org/10.1007/s10533-017-0350-9 Text en © The Author(s) 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Article
Hale, Rachel
Godbold, Jasmin A.
Sciberras, Marija
Dwight, Jessica
Wood, Christina
Hiddink, Jan G.
Solan, Martin
Mediation of macronutrients and carbon by post-disturbance shelf sea sediment communities
title Mediation of macronutrients and carbon by post-disturbance shelf sea sediment communities
title_full Mediation of macronutrients and carbon by post-disturbance shelf sea sediment communities
title_fullStr Mediation of macronutrients and carbon by post-disturbance shelf sea sediment communities
title_full_unstemmed Mediation of macronutrients and carbon by post-disturbance shelf sea sediment communities
title_short Mediation of macronutrients and carbon by post-disturbance shelf sea sediment communities
title_sort mediation of macronutrients and carbon by post-disturbance shelf sea sediment communities
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6961522/
https://www.ncbi.nlm.nih.gov/pubmed/32009694
http://dx.doi.org/10.1007/s10533-017-0350-9
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