Variation in marine benthic community composition allows discrimination of multiple stressors
Predicting how communities respond to multiple, potentially interacting chemical stressors is inherently difficult because community structure and dynamics, the chemical properties of contaminants, and biological-chemical interactions vary with environmental conditions. Using a field experiment cond...
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ftcarolinadr:cdr.lib.unc.edu:mw22vf64f 2023-09-05T13:15:22+02:00 Variation in marine benthic community composition allows discrimination of multiple stressors Lenihan, Hunter S. Peterson, Charles H. Kim, Stacy L. Conlan, Kathleen E. Fairey, Russell McDonald, Christian Grabowski, Jonathan H. Oliver, John S. University of North Carolina at Chapel Hill 2003 https://doi.org/10.17615/hwxh-7j13 https://cdr.lib.unc.edu/downloads/7p88cr239?file=thumbnail https://cdr.lib.unc.edu/downloads/7p88cr239 English eng https://doi.org/10.17615/hwxh-7j13 https://cdr.lib.unc.edu/downloads/7p88cr239?file=thumbnail https://cdr.lib.unc.edu/downloads/7p88cr239 http://rightsstatements.org/vocab/InC/1.0/ Marine Ecology - Progress Series, 261 Copper Toxicants Toxicity Multiple stressors Heavy metal Chemical contaminants Echinodermata Annelida Community response· Marine ecosystem Invertebrata Perturbation Animal community Organic enrichment Experimental design Forecast model Organic matter Stress Arthropoda Pollutant Community structure Interspecific comparison Invertebrates Tolerance Medium enrichment Water pollution Antarctica Article 2003 ftcarolinadr https://doi.org/10.17615/hwxh-7j13 2023-08-19T22:26:07Z Predicting how communities respond to multiple, potentially interacting chemical stressors is inherently difficult because community structure and dynamics, the chemical properties of contaminants, and biological-chemical interactions vary with environmental conditions. Using a field experiment conducted in Antarctica, we tested whether 3 phyla of benthic soft-sediment marine invertebrates-annelids, arthropods, and echinoderms-respond differently to 2 common forms of contamination, organic enrichment and toxic contamination. Based on life history strategies and physiological tolerances to contaminants, we hypothesized that the principal responses of the 3 phyla would be: (1) enhanced abundance of annelids in organically enrichment sediments and (2) decreased abundance of arthropods and echinoderms in toxic metal contamination. Sediment treatments were established in the field experiment with an orthogonal combination of 3 levels of total organic carbon (TOC; 0, 1, and 2% by weight) and copper (Cu; 0, 100, and 500 mug Cu g(-1) sediment), and colonization patterns were observed after 1 yr. Densities of annelids (mainly polychaetes) increased with TOC across all levels of Cu. Arthropods and echinoderms decreased with Cu, but responded variably to TOC, based largely on differences in habitat preferences exhibited by epifaunal and infaunal species. Small subsurface arthropod species (amphipods, isopods, cumaceans, and ostracods) decreased in high organic loading, due to induction of and exposure to hypoxia and hydrogen sulfide, but large surface deposit-feeding echinoderms (asteroids and echinoids) responded positively to increased carbon food supply. We present a predictive model based on assessment of benthic community structure conducted at the taxonomic level of phyla that could be used to link cause and effect for multiple chemical stressors in marine ecosystems. Article in Journal/Newspaper Antarc* Antarctica Carolina Digital Repository (UNC - University of North Carolina) |
institution |
Open Polar |
collection |
Carolina Digital Repository (UNC - University of North Carolina) |
op_collection_id |
ftcarolinadr |
language |
English |
topic |
Copper Toxicants Toxicity Multiple stressors Heavy metal Chemical contaminants Echinodermata Annelida Community response· Marine ecosystem Invertebrata Perturbation Animal community Organic enrichment Experimental design Forecast model Organic matter Stress Arthropoda Pollutant Community structure Interspecific comparison Invertebrates Tolerance Medium enrichment Water pollution Antarctica |
spellingShingle |
Copper Toxicants Toxicity Multiple stressors Heavy metal Chemical contaminants Echinodermata Annelida Community response· Marine ecosystem Invertebrata Perturbation Animal community Organic enrichment Experimental design Forecast model Organic matter Stress Arthropoda Pollutant Community structure Interspecific comparison Invertebrates Tolerance Medium enrichment Water pollution Antarctica Lenihan, Hunter S. Peterson, Charles H. Kim, Stacy L. Conlan, Kathleen E. Fairey, Russell McDonald, Christian Grabowski, Jonathan H. Oliver, John S. Variation in marine benthic community composition allows discrimination of multiple stressors |
topic_facet |
Copper Toxicants Toxicity Multiple stressors Heavy metal Chemical contaminants Echinodermata Annelida Community response· Marine ecosystem Invertebrata Perturbation Animal community Organic enrichment Experimental design Forecast model Organic matter Stress Arthropoda Pollutant Community structure Interspecific comparison Invertebrates Tolerance Medium enrichment Water pollution Antarctica |
description |
Predicting how communities respond to multiple, potentially interacting chemical stressors is inherently difficult because community structure and dynamics, the chemical properties of contaminants, and biological-chemical interactions vary with environmental conditions. Using a field experiment conducted in Antarctica, we tested whether 3 phyla of benthic soft-sediment marine invertebrates-annelids, arthropods, and echinoderms-respond differently to 2 common forms of contamination, organic enrichment and toxic contamination. Based on life history strategies and physiological tolerances to contaminants, we hypothesized that the principal responses of the 3 phyla would be: (1) enhanced abundance of annelids in organically enrichment sediments and (2) decreased abundance of arthropods and echinoderms in toxic metal contamination. Sediment treatments were established in the field experiment with an orthogonal combination of 3 levels of total organic carbon (TOC; 0, 1, and 2% by weight) and copper (Cu; 0, 100, and 500 mug Cu g(-1) sediment), and colonization patterns were observed after 1 yr. Densities of annelids (mainly polychaetes) increased with TOC across all levels of Cu. Arthropods and echinoderms decreased with Cu, but responded variably to TOC, based largely on differences in habitat preferences exhibited by epifaunal and infaunal species. Small subsurface arthropod species (amphipods, isopods, cumaceans, and ostracods) decreased in high organic loading, due to induction of and exposure to hypoxia and hydrogen sulfide, but large surface deposit-feeding echinoderms (asteroids and echinoids) responded positively to increased carbon food supply. We present a predictive model based on assessment of benthic community structure conducted at the taxonomic level of phyla that could be used to link cause and effect for multiple chemical stressors in marine ecosystems. |
author2 |
University of North Carolina at Chapel Hill |
format |
Article in Journal/Newspaper |
author |
Lenihan, Hunter S. Peterson, Charles H. Kim, Stacy L. Conlan, Kathleen E. Fairey, Russell McDonald, Christian Grabowski, Jonathan H. Oliver, John S. |
author_facet |
Lenihan, Hunter S. Peterson, Charles H. Kim, Stacy L. Conlan, Kathleen E. Fairey, Russell McDonald, Christian Grabowski, Jonathan H. Oliver, John S. |
author_sort |
Lenihan, Hunter S. |
title |
Variation in marine benthic community composition allows discrimination of multiple stressors |
title_short |
Variation in marine benthic community composition allows discrimination of multiple stressors |
title_full |
Variation in marine benthic community composition allows discrimination of multiple stressors |
title_fullStr |
Variation in marine benthic community composition allows discrimination of multiple stressors |
title_full_unstemmed |
Variation in marine benthic community composition allows discrimination of multiple stressors |
title_sort |
variation in marine benthic community composition allows discrimination of multiple stressors |
publishDate |
2003 |
url |
https://doi.org/10.17615/hwxh-7j13 https://cdr.lib.unc.edu/downloads/7p88cr239?file=thumbnail https://cdr.lib.unc.edu/downloads/7p88cr239 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Marine Ecology - Progress Series, 261 |
op_relation |
https://doi.org/10.17615/hwxh-7j13 https://cdr.lib.unc.edu/downloads/7p88cr239?file=thumbnail https://cdr.lib.unc.edu/downloads/7p88cr239 |
op_rights |
http://rightsstatements.org/vocab/InC/1.0/ |
op_doi |
https://doi.org/10.17615/hwxh-7j13 |
_version_ |
1776197173381169152 |