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Annual plankton community metabolism in estuarine and coastal waters in Perth (Western Australia)
The planktonic metabolic balance that is the balance between gross primary production (GPP) and community respiration (CR) was determined in Matilda Bay (estuarine) and Woodman Point (coastal) in Perth, Western Australia. The rates of net community production (NCP = GPP – CR) and the ratio between G...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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PeerJ Inc.
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6025146/ https://www.ncbi.nlm.nih.gov/pubmed/29967741 http://dx.doi.org/10.7717/peerj.5081 |
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author | Agusti, Susana Vigoya, Lorena Duarte, Carlos Manuel |
author_facet | Agusti, Susana Vigoya, Lorena Duarte, Carlos Manuel |
author_sort | Agusti, Susana |
collection | PubMed |
description | The planktonic metabolic balance that is the balance between gross primary production (GPP) and community respiration (CR) was determined in Matilda Bay (estuarine) and Woodman Point (coastal) in Perth, Western Australia. The rates of net community production (NCP = GPP – CR) and the ratio between GPP and CR (P/R) were assessed to evaluate whether the metabolic balance in the two coastal locations tends to be net autotrophic (production exceeding community respiration) or net heterotrophic (respiration exceeding production). We also analyzed environmental variability by measuring temperature, salinity, and nutrients and chlorophyll a concentration. Samples were collected biweekly from March 2014 to March 2015. During the study period the metabolic rates were three times higher in Matilda Bay than in Woodman Point. The predominant metabolism was net autotrophic at both sites with P/R ratios >1 in the majority of the sampling dates. In Matilda Bay, the metabolic rates were negatively correlated with salinity denoting river dynamics influence, and positively with chlorophyll a. In Woodman Point only the GPP was positively correlated with chlorophyll a. The positive correlation between P/R ratio and GPP in Matilda Bay and the positive correlations between the metabolic rates and chlorophyll a suggest that factors controlling autotrophic processes are modulating the planktonic metabolic balance in the coastal marine ecosystem in Perth. Significant correlations were found between CR and GPP-standardized to chlorophyll a and water temperature. The net autotrophic metabolic balance indicates that in both ecosystems planktonic communities are acting as a sink of CO(2) and as a source of organic matter and oxygen to the system and are able to export organic matter to other ecosystems. |
format | Online Article Text |
id | pubmed-6025146 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | PeerJ Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-60251462018-07-02 Annual plankton community metabolism in estuarine and coastal waters in Perth (Western Australia) Agusti, Susana Vigoya, Lorena Duarte, Carlos Manuel PeerJ Ecology The planktonic metabolic balance that is the balance between gross primary production (GPP) and community respiration (CR) was determined in Matilda Bay (estuarine) and Woodman Point (coastal) in Perth, Western Australia. The rates of net community production (NCP = GPP – CR) and the ratio between GPP and CR (P/R) were assessed to evaluate whether the metabolic balance in the two coastal locations tends to be net autotrophic (production exceeding community respiration) or net heterotrophic (respiration exceeding production). We also analyzed environmental variability by measuring temperature, salinity, and nutrients and chlorophyll a concentration. Samples were collected biweekly from March 2014 to March 2015. During the study period the metabolic rates were three times higher in Matilda Bay than in Woodman Point. The predominant metabolism was net autotrophic at both sites with P/R ratios >1 in the majority of the sampling dates. In Matilda Bay, the metabolic rates were negatively correlated with salinity denoting river dynamics influence, and positively with chlorophyll a. In Woodman Point only the GPP was positively correlated with chlorophyll a. The positive correlation between P/R ratio and GPP in Matilda Bay and the positive correlations between the metabolic rates and chlorophyll a suggest that factors controlling autotrophic processes are modulating the planktonic metabolic balance in the coastal marine ecosystem in Perth. Significant correlations were found between CR and GPP-standardized to chlorophyll a and water temperature. The net autotrophic metabolic balance indicates that in both ecosystems planktonic communities are acting as a sink of CO(2) and as a source of organic matter and oxygen to the system and are able to export organic matter to other ecosystems. PeerJ Inc. 2018-06-26 /pmc/articles/PMC6025146/ /pubmed/29967741 http://dx.doi.org/10.7717/peerj.5081 Text en ©2018 Agusti et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. |
spellingShingle | Ecology Agusti, Susana Vigoya, Lorena Duarte, Carlos Manuel Annual plankton community metabolism in estuarine and coastal waters in Perth (Western Australia) |
title | Annual plankton community metabolism in estuarine and coastal waters in Perth (Western Australia) |
title_full | Annual plankton community metabolism in estuarine and coastal waters in Perth (Western Australia) |
title_fullStr | Annual plankton community metabolism in estuarine and coastal waters in Perth (Western Australia) |
title_full_unstemmed | Annual plankton community metabolism in estuarine and coastal waters in Perth (Western Australia) |
title_short | Annual plankton community metabolism in estuarine and coastal waters in Perth (Western Australia) |
title_sort | annual plankton community metabolism in estuarine and coastal waters in perth (western australia) |
topic | Ecology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6025146/ https://www.ncbi.nlm.nih.gov/pubmed/29967741 http://dx.doi.org/10.7717/peerj.5081 |
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