Biotic disturbance mitigates effects of multiple stressors in a marine benthic community
Abstract Predicting how communities respond to multiple stressors is challenging because community dynamics, stressors, and animal–stressor interactions can vary with environmental conditions, including the intensity of natural disturbance. Nevertheless, environmental laws stipulate that we predict,...
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crwiley:10.1002/ecs2.2314 2024-09-15T17:45:53+00:00 Biotic disturbance mitigates effects of multiple stressors in a marine benthic community Lenihan, Hunter S. Peterson, Charles H. Miller, Robert J. Kayal, Mohsen Potoski, Matthew National Science Foundation 2018 http://dx.doi.org/10.1002/ecs2.2314 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fecs2.2314 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ecs2.2314 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ecs2.2314 http://api.wiley.com/onlinelibrary/chorus/v1/articles/10.1002%2Fecs2.2314 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1002/ecs2.2314 en eng Wiley http://creativecommons.org/licenses/by/3.0/ http://creativecommons.org/licenses/by/3.0/ Ecosphere volume 9, issue 6 ISSN 2150-8925 2150-8925 journal-article 2018 crwiley https://doi.org/10.1002/ecs2.2314 2024-07-09T04:10:08Z Abstract Predicting how communities respond to multiple stressors is challenging because community dynamics, stressors, and animal–stressor interactions can vary with environmental conditions, including the intensity of natural disturbance. Nevertheless, environmental laws stipulate that we predict, measure, and mitigate the ecological effects of some human‐induced stressors in the environment, including chemical contaminants in aquatic ecosystems. We conducted an experiment in Antarctica to test how a marine soft‐sediment benthic community responded to multiple chemical contaminants and biotic disturbance by manipulating organic carbon enrichment, copper metal contamination, access by large epibenthic animals, and their interaction. Biotic disturbance caused mainly by large echinoderms was manipulated with exclusion cages and cage‐control treatments. Colonization patterns in sediment trays revealed that total infaunal abundance and arthropods decreased with toxic Cu (0, 100, and 500 ppm) and total organic carbon ( TOC 0%, 1%, and 2% by wt), as enrichment produced increasing levels of sediment hypoxia/anoxia. Annelids and echinoderms decreased with Cu but increased with TOC because many colonizing polychaete worms, seastars, and epifaunal sea urchins were deposit feeders. Bioturbation by echinoderms disturbed sediments, leading to a substantial decline in total infaunal abundance in uncontaminated sediments, but also an increase in the relative abundance in contaminated sediments, as bioturbation mitigated the effect of both chemical stressors. Biotic disturbance also caused substantial shifts in the species composition of the invertebrate assemblages and an overall increase in species diversity. Prior predictions about the response of benthic marine phyla to the separate and combined effects of Cu and carbon enrichment appear robust to variation in natural biotic disturbance. Article in Journal/Newspaper Antarc* Antarctica Wiley Online Library Ecosphere 9 6 |
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Wiley Online Library |
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English |
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Abstract Predicting how communities respond to multiple stressors is challenging because community dynamics, stressors, and animal–stressor interactions can vary with environmental conditions, including the intensity of natural disturbance. Nevertheless, environmental laws stipulate that we predict, measure, and mitigate the ecological effects of some human‐induced stressors in the environment, including chemical contaminants in aquatic ecosystems. We conducted an experiment in Antarctica to test how a marine soft‐sediment benthic community responded to multiple chemical contaminants and biotic disturbance by manipulating organic carbon enrichment, copper metal contamination, access by large epibenthic animals, and their interaction. Biotic disturbance caused mainly by large echinoderms was manipulated with exclusion cages and cage‐control treatments. Colonization patterns in sediment trays revealed that total infaunal abundance and arthropods decreased with toxic Cu (0, 100, and 500 ppm) and total organic carbon ( TOC 0%, 1%, and 2% by wt), as enrichment produced increasing levels of sediment hypoxia/anoxia. Annelids and echinoderms decreased with Cu but increased with TOC because many colonizing polychaete worms, seastars, and epifaunal sea urchins were deposit feeders. Bioturbation by echinoderms disturbed sediments, leading to a substantial decline in total infaunal abundance in uncontaminated sediments, but also an increase in the relative abundance in contaminated sediments, as bioturbation mitigated the effect of both chemical stressors. Biotic disturbance also caused substantial shifts in the species composition of the invertebrate assemblages and an overall increase in species diversity. Prior predictions about the response of benthic marine phyla to the separate and combined effects of Cu and carbon enrichment appear robust to variation in natural biotic disturbance. |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Lenihan, Hunter S. Peterson, Charles H. Miller, Robert J. Kayal, Mohsen Potoski, Matthew |
spellingShingle |
Lenihan, Hunter S. Peterson, Charles H. Miller, Robert J. Kayal, Mohsen Potoski, Matthew Biotic disturbance mitigates effects of multiple stressors in a marine benthic community |
author_facet |
Lenihan, Hunter S. Peterson, Charles H. Miller, Robert J. Kayal, Mohsen Potoski, Matthew |
author_sort |
Lenihan, Hunter S. |
title |
Biotic disturbance mitigates effects of multiple stressors in a marine benthic community |
title_short |
Biotic disturbance mitigates effects of multiple stressors in a marine benthic community |
title_full |
Biotic disturbance mitigates effects of multiple stressors in a marine benthic community |
title_fullStr |
Biotic disturbance mitigates effects of multiple stressors in a marine benthic community |
title_full_unstemmed |
Biotic disturbance mitigates effects of multiple stressors in a marine benthic community |
title_sort |
biotic disturbance mitigates effects of multiple stressors in a marine benthic community |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1002/ecs2.2314 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fecs2.2314 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ecs2.2314 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ecs2.2314 http://api.wiley.com/onlinelibrary/chorus/v1/articles/10.1002%2Fecs2.2314 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1002/ecs2.2314 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Ecosphere volume 9, issue 6 ISSN 2150-8925 2150-8925 |
op_rights |
http://creativecommons.org/licenses/by/3.0/ http://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.1002/ecs2.2314 |
container_title |
Ecosphere |
container_volume |
9 |
container_issue |
6 |
_version_ |
1810493820105654272 |