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Ocean Acidification-Induced Food Quality Deterioration Constrains Trophic Transfer
Our present understanding of ocean acidification (OA) impacts on marine organisms caused by rapidly rising atmospheric carbon dioxide (CO(2)) concentration is almost entirely limited to single species responses. OA consequences for food web interactions are, however, still unknown. Indirect OA effec...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3324536/ https://www.ncbi.nlm.nih.gov/pubmed/22509351 http://dx.doi.org/10.1371/journal.pone.0034737 |
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author | Rossoll, Dennis Bermúdez, Rafael Hauss, Helena Schulz, Kai G. Riebesell, Ulf Sommer, Ulrich Winder, Monika |
author_facet | Rossoll, Dennis Bermúdez, Rafael Hauss, Helena Schulz, Kai G. Riebesell, Ulf Sommer, Ulrich Winder, Monika |
author_sort | Rossoll, Dennis |
collection | PubMed |
description | Our present understanding of ocean acidification (OA) impacts on marine organisms caused by rapidly rising atmospheric carbon dioxide (CO(2)) concentration is almost entirely limited to single species responses. OA consequences for food web interactions are, however, still unknown. Indirect OA effects can be expected for consumers by changing the nutritional quality of their prey. We used a laboratory experiment to test potential OA effects on algal fatty acid (FA) composition and resulting copepod growth. We show that elevated CO(2) significantly changed the FA concentration and composition of the diatom Thalassiosira pseudonana, which constrained growth and reproduction of the copepod Acartia tonsa. A significant decline in both total FAs (28.1 to 17.4 fg cell(−1)) and the ratio of long-chain polyunsaturated to saturated fatty acids (PUFA:SFA) of food algae cultured under elevated (750 µatm) compared to present day (380 µatm) pCO(2) was directly translated to copepods. The proportion of total essential FAs declined almost tenfold in copepods and the contribution of saturated fatty acids (SFAs) tripled at high CO(2). This rapid and reversible CO(2)-dependent shift in FA concentration and composition caused a decrease in both copepod somatic growth and egg production from 34 to 5 eggs female(−1) day(−1). Because the diatom-copepod link supports some of the most productive ecosystems in the world, our study demonstrates that OA can have far-reaching consequences for ocean food webs by changing the nutritional quality of essential macromolecules in primary producers that cascade up the food web. |
format | Online Article Text |
id | pubmed-3324536 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-33245362012-04-16 Ocean Acidification-Induced Food Quality Deterioration Constrains Trophic Transfer Rossoll, Dennis Bermúdez, Rafael Hauss, Helena Schulz, Kai G. Riebesell, Ulf Sommer, Ulrich Winder, Monika PLoS One Research Article Our present understanding of ocean acidification (OA) impacts on marine organisms caused by rapidly rising atmospheric carbon dioxide (CO(2)) concentration is almost entirely limited to single species responses. OA consequences for food web interactions are, however, still unknown. Indirect OA effects can be expected for consumers by changing the nutritional quality of their prey. We used a laboratory experiment to test potential OA effects on algal fatty acid (FA) composition and resulting copepod growth. We show that elevated CO(2) significantly changed the FA concentration and composition of the diatom Thalassiosira pseudonana, which constrained growth and reproduction of the copepod Acartia tonsa. A significant decline in both total FAs (28.1 to 17.4 fg cell(−1)) and the ratio of long-chain polyunsaturated to saturated fatty acids (PUFA:SFA) of food algae cultured under elevated (750 µatm) compared to present day (380 µatm) pCO(2) was directly translated to copepods. The proportion of total essential FAs declined almost tenfold in copepods and the contribution of saturated fatty acids (SFAs) tripled at high CO(2). This rapid and reversible CO(2)-dependent shift in FA concentration and composition caused a decrease in both copepod somatic growth and egg production from 34 to 5 eggs female(−1) day(−1). Because the diatom-copepod link supports some of the most productive ecosystems in the world, our study demonstrates that OA can have far-reaching consequences for ocean food webs by changing the nutritional quality of essential macromolecules in primary producers that cascade up the food web. Public Library of Science 2012-04-11 /pmc/articles/PMC3324536/ /pubmed/22509351 http://dx.doi.org/10.1371/journal.pone.0034737 Text en Rossoll 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, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Rossoll, Dennis Bermúdez, Rafael Hauss, Helena Schulz, Kai G. Riebesell, Ulf Sommer, Ulrich Winder, Monika Ocean Acidification-Induced Food Quality Deterioration Constrains Trophic Transfer |
title | Ocean Acidification-Induced Food Quality Deterioration Constrains Trophic Transfer |
title_full | Ocean Acidification-Induced Food Quality Deterioration Constrains Trophic Transfer |
title_fullStr | Ocean Acidification-Induced Food Quality Deterioration Constrains Trophic Transfer |
title_full_unstemmed | Ocean Acidification-Induced Food Quality Deterioration Constrains Trophic Transfer |
title_short | Ocean Acidification-Induced Food Quality Deterioration Constrains Trophic Transfer |
title_sort | ocean acidification-induced food quality deterioration constrains trophic transfer |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3324536/ https://www.ncbi.nlm.nih.gov/pubmed/22509351 http://dx.doi.org/10.1371/journal.pone.0034737 |
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