Effects of Non-Indigenous Oysters on Microbial Diversity and Ecosystem Functioning
Invasive ecosystem engineers can physically and chemically alter the receiving environment, thereby affecting biodiversity and ecosystem functioning. The Pacific oyster, Crassostrea gigas, invasive throughout much of the world, can establish dense populations monopolising shorelines and possibly alt...
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ftpubmed:oai:pubmedcentral.nih.gov:3483273 2023-05-15T15:58:54+02:00 Effects of Non-Indigenous Oysters on Microbial Diversity and Ecosystem Functioning Green, Dannielle S. Boots, Bas Crowe, Tasman P. 2012-10-29 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3483273 http://www.ncbi.nlm.nih.gov/pubmed/23144762 https://doi.org/10.1371/journal.pone.0048410 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3483273 http://www.ncbi.nlm.nih.gov/pubmed/23144762 http://dx.doi.org/10.1371/journal.pone.0048410 This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2012 ftpubmed https://doi.org/10.1371/journal.pone.0048410 2013-09-04T15:05:47Z Invasive ecosystem engineers can physically and chemically alter the receiving environment, thereby affecting biodiversity and ecosystem functioning. The Pacific oyster, Crassostrea gigas, invasive throughout much of the world, can establish dense populations monopolising shorelines and possibly altering ecosystem processes including decomposition and nutrient cycling. The effects of increasing cover of invasive C. gigas on ecosystem processes and associated microbial assemblages in mud-flats were tested experimentally in the field. Pore-water nutrients (NH4+ and total oxidised nitrogen), sediment chlorophyll content, microbial activity, total carbon and nitrogen, and community respiration (CO2 and CH4) were measured to assess changes in ecosystem functioning. Assemblages of bacteria and functionally important microbes, including methanogens, methylotrophs and ammonia-oxidisers were assessed in the oxic and anoxic layers of sediment using terminal restriction length polymorphism of the bacterial 16S rRNA, mxaF, amoA and archaeal mcrA genes respectively. At higher covers (40 and 80%) of oysters there was significantly greater microbial activity, increased chlorophyll content, CO2 (13 fold greater) and CH4 (6 fold greater) emission from the sediment compared to mud-flats without C. gigas. At 10% cover, C. gigas increased the concentration of total oxidised nitrogen and altered the assemblage structure of ammonia-oxidisers and methanogens. Concentrations of pore-water NH4+ were increased by C. gigas regardless of cover. Invasive species can alter ecosystem functioning not only directly, but also indirectly, by affecting microbial communities vital for the maintenance of ecosystem processes, but the nature and magnitude of these effects can be non-linear, depending on invader abundance. Text Crassostrea gigas Pacific oyster PubMed Central (PMC) Pacific PLoS ONE 7 10 e48410 |
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Research Article Green, Dannielle S. Boots, Bas Crowe, Tasman P. Effects of Non-Indigenous Oysters on Microbial Diversity and Ecosystem Functioning |
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Research Article |
description |
Invasive ecosystem engineers can physically and chemically alter the receiving environment, thereby affecting biodiversity and ecosystem functioning. The Pacific oyster, Crassostrea gigas, invasive throughout much of the world, can establish dense populations monopolising shorelines and possibly altering ecosystem processes including decomposition and nutrient cycling. The effects of increasing cover of invasive C. gigas on ecosystem processes and associated microbial assemblages in mud-flats were tested experimentally in the field. Pore-water nutrients (NH4+ and total oxidised nitrogen), sediment chlorophyll content, microbial activity, total carbon and nitrogen, and community respiration (CO2 and CH4) were measured to assess changes in ecosystem functioning. Assemblages of bacteria and functionally important microbes, including methanogens, methylotrophs and ammonia-oxidisers were assessed in the oxic and anoxic layers of sediment using terminal restriction length polymorphism of the bacterial 16S rRNA, mxaF, amoA and archaeal mcrA genes respectively. At higher covers (40 and 80%) of oysters there was significantly greater microbial activity, increased chlorophyll content, CO2 (13 fold greater) and CH4 (6 fold greater) emission from the sediment compared to mud-flats without C. gigas. At 10% cover, C. gigas increased the concentration of total oxidised nitrogen and altered the assemblage structure of ammonia-oxidisers and methanogens. Concentrations of pore-water NH4+ were increased by C. gigas regardless of cover. Invasive species can alter ecosystem functioning not only directly, but also indirectly, by affecting microbial communities vital for the maintenance of ecosystem processes, but the nature and magnitude of these effects can be non-linear, depending on invader abundance. |
format |
Text |
author |
Green, Dannielle S. Boots, Bas Crowe, Tasman P. |
author_facet |
Green, Dannielle S. Boots, Bas Crowe, Tasman P. |
author_sort |
Green, Dannielle S. |
title |
Effects of Non-Indigenous Oysters on Microbial Diversity and Ecosystem Functioning |
title_short |
Effects of Non-Indigenous Oysters on Microbial Diversity and Ecosystem Functioning |
title_full |
Effects of Non-Indigenous Oysters on Microbial Diversity and Ecosystem Functioning |
title_fullStr |
Effects of Non-Indigenous Oysters on Microbial Diversity and Ecosystem Functioning |
title_full_unstemmed |
Effects of Non-Indigenous Oysters on Microbial Diversity and Ecosystem Functioning |
title_sort |
effects of non-indigenous oysters on microbial diversity and ecosystem functioning |
publisher |
Public Library of Science |
publishDate |
2012 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3483273 http://www.ncbi.nlm.nih.gov/pubmed/23144762 https://doi.org/10.1371/journal.pone.0048410 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3483273 http://www.ncbi.nlm.nih.gov/pubmed/23144762 http://dx.doi.org/10.1371/journal.pone.0048410 |
op_rights |
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0048410 |
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PLoS ONE |
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7 |
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10 |
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e48410 |
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