Eutrophication offsets increased sea urchin grazing on seagrass caused by ocean warming and acidification
The accumulation of atmospheric [CO2] continues to warm and acidify oceans concomitant with local disturbances, such as eutrophication. These changes can modify plant–herbivore grazing interactions by affecting the physiology of grazers and by altering the nutritional value of plants. However, such...
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ftcquniv:oai:acquire.cqu.edu.au:cqu:10108 2023-05-15T13:58:22+02:00 Eutrophication offsets increased sea urchin grazing on seagrass caused by ocean warming and acidification Burnell, Owen W. Russell, Bayden D. Irving, Andrew D. School of Medical and Applied Sciences (2013-) Connell, Sean D. 2013 http://hdl.cqu.edu.au/10018/1013304 unknown http://hdl.cqu.edu.au/10018/1013304 acquire1-20131213-124555 cqu:10108 Temperature Carbon Dioxide Herbivory Consumption Nutrient Enrichment Climate Change Amblypneustes Pallidus Amphibolis Antarctica Journal Article_1 2013 ftcquniv 2019-04-18T07:07:51Z The accumulation of atmospheric [CO2] continues to warm and acidify oceans concomitant with local disturbances, such as eutrophication. These changes can modify plant–herbivore grazing interactions by affecting the physiology of grazers and by altering the nutritional value of plants. However, such environmental changes are often studied in isolation, providing little understanding of their combined effects. We tested how ocean warming and acidification affect the per capita grazing by the sea urchin Amblypneustes pallidus on the seagrass Amphibolis antarctica and how such effects may differ between ambient and eutrophic nutrient conditions. Consistent with metabolic theory, grazing increased with warming, but in contrast to our expectations, acidification also increased grazing. While nutrient enrichment reduced grazing, it did not fully counterbalance the increase associated with warming and acidification. Collectively, these results suggest that ocean warming and acidification may combine to strengthen topdown pressure by herbivores. Localised nutrient enrichment could ameliorate some of the increased per capita grazing effect caused by warming and acidification, provided other common negative effects of eutrophication on seagrass, including overgrowth by epiphytes and herbivore aggregation, are not overwhelming. There is value in assessing how global and local environmental change will combine, often in non-intuitive ways, to modify biological interactions that shape habitats. Other/Unknown Material Antarc* Antarctica Central Queensland University: aCQUIRe |
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Open Polar |
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Central Queensland University: aCQUIRe |
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topic |
Temperature Carbon Dioxide Herbivory Consumption Nutrient Enrichment Climate Change Amblypneustes Pallidus Amphibolis Antarctica |
spellingShingle |
Temperature Carbon Dioxide Herbivory Consumption Nutrient Enrichment Climate Change Amblypneustes Pallidus Amphibolis Antarctica Burnell, Owen W. Russell, Bayden D. Irving, Andrew D. School of Medical and Applied Sciences (2013-) Connell, Sean D. Eutrophication offsets increased sea urchin grazing on seagrass caused by ocean warming and acidification |
topic_facet |
Temperature Carbon Dioxide Herbivory Consumption Nutrient Enrichment Climate Change Amblypneustes Pallidus Amphibolis Antarctica |
description |
The accumulation of atmospheric [CO2] continues to warm and acidify oceans concomitant with local disturbances, such as eutrophication. These changes can modify plant–herbivore grazing interactions by affecting the physiology of grazers and by altering the nutritional value of plants. However, such environmental changes are often studied in isolation, providing little understanding of their combined effects. We tested how ocean warming and acidification affect the per capita grazing by the sea urchin Amblypneustes pallidus on the seagrass Amphibolis antarctica and how such effects may differ between ambient and eutrophic nutrient conditions. Consistent with metabolic theory, grazing increased with warming, but in contrast to our expectations, acidification also increased grazing. While nutrient enrichment reduced grazing, it did not fully counterbalance the increase associated with warming and acidification. Collectively, these results suggest that ocean warming and acidification may combine to strengthen topdown pressure by herbivores. Localised nutrient enrichment could ameliorate some of the increased per capita grazing effect caused by warming and acidification, provided other common negative effects of eutrophication on seagrass, including overgrowth by epiphytes and herbivore aggregation, are not overwhelming. There is value in assessing how global and local environmental change will combine, often in non-intuitive ways, to modify biological interactions that shape habitats. |
format |
Other/Unknown Material |
author |
Burnell, Owen W. Russell, Bayden D. Irving, Andrew D. School of Medical and Applied Sciences (2013-) Connell, Sean D. |
author_facet |
Burnell, Owen W. Russell, Bayden D. Irving, Andrew D. School of Medical and Applied Sciences (2013-) Connell, Sean D. |
author_sort |
Burnell, Owen W. |
title |
Eutrophication offsets increased sea urchin grazing on seagrass caused by ocean warming and acidification |
title_short |
Eutrophication offsets increased sea urchin grazing on seagrass caused by ocean warming and acidification |
title_full |
Eutrophication offsets increased sea urchin grazing on seagrass caused by ocean warming and acidification |
title_fullStr |
Eutrophication offsets increased sea urchin grazing on seagrass caused by ocean warming and acidification |
title_full_unstemmed |
Eutrophication offsets increased sea urchin grazing on seagrass caused by ocean warming and acidification |
title_sort |
eutrophication offsets increased sea urchin grazing on seagrass caused by ocean warming and acidification |
publishDate |
2013 |
url |
http://hdl.cqu.edu.au/10018/1013304 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
http://hdl.cqu.edu.au/10018/1013304 acquire1-20131213-124555 cqu:10108 |
_version_ |
1766266611910574080 |