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Community dynamics and ecosystem simplification in a high-CO 2 ocean
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| Zeitschriftentitel: | Proceedings of the National Academy of Sciences |
|---|---|
| Personen und Körperschaften: | , , |
| In: | Proceedings of the National Academy of Sciences, 110, 2013, 31, S. 12721-12726 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Proceedings of the National Academy of Sciences
|
| Schlagwörter: |
| author_facet |
Kroeker, Kristy J. Gambi, Maria Cristina Micheli, Fiorenza Kroeker, Kristy J. Gambi, Maria Cristina Micheli, Fiorenza |
|---|---|
| author |
Kroeker, Kristy J. Gambi, Maria Cristina Micheli, Fiorenza |
| spellingShingle |
Kroeker, Kristy J. Gambi, Maria Cristina Micheli, Fiorenza Proceedings of the National Academy of Sciences Community dynamics and ecosystem simplification in a high-CO 2 ocean Multidisciplinary |
| author_sort |
kroeker, kristy j. |
| spelling |
Kroeker, Kristy J. Gambi, Maria Cristina Micheli, Fiorenza 0027-8424 1091-6490 Proceedings of the National Academy of Sciences Multidisciplinary http://dx.doi.org/10.1073/pnas.1216464110 <jats:p> Disturbances are natural features of ecosystems that promote variability in the community and ultimately maintain diversity. Although it is recognized that global change will affect environmental disturbance regimes, our understanding of the community dynamics governing ecosystem recovery and the maintenance of functional diversity in future scenarios is very limited. Here, we use one of the few ecosystems naturally exposed to future scenarios of environmental change to examine disturbance and recovery dynamics. We examine the recovery patterns of marine species from a physical disturbance across different acidification regimes caused by volcanic CO <jats:sub>2</jats:sub> vents. Plots of shallow rocky reef were cleared of all species in areas of ambient, low, and extreme low pH that correspond to near-future and extreme scenarios for ocean acidification. Our results illustrate how acidification decreases the variability of communities, resulting in homogenization and reduced functional diversity at a landscape scale. Whereas the recovery trajectories in ambient pH were highly variable and resulted in a diverse range of assemblages, recovery was more predictable with acidification and consistently resulted in very similar algal-dominated assemblages. Furthermore, low pH zones had fewer signs of biological disturbance (primarily sea urchin grazing) and increased recovery rates of the dominant taxa (primarily fleshy algae). Together, our results highlight how environmental change can cause ecosystem simplification via environmentally mediated changes in community dynamics in the near future, with cascading impacts on functional diversity and ecosystem function. </jats:p> Community dynamics and ecosystem simplification in a high-CO <sub>2</sub> ocean Proceedings of the National Academy of Sciences |
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| title |
Community dynamics and ecosystem simplification in a high-CO 2 ocean |
| title_unstemmed |
Community dynamics and ecosystem simplification in a high-CO 2 ocean |
| title_full |
Community dynamics and ecosystem simplification in a high-CO 2 ocean |
| title_fullStr |
Community dynamics and ecosystem simplification in a high-CO 2 ocean |
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Community dynamics and ecosystem simplification in a high-CO 2 ocean |
| title_short |
Community dynamics and ecosystem simplification in a high-CO 2 ocean |
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community dynamics and ecosystem simplification in a high-co
<sub>2</sub>
ocean |
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Multidisciplinary |
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http://dx.doi.org/10.1073/pnas.1216464110 |
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2013 |
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12721-12726 |
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<jats:p>
Disturbances are natural features of ecosystems that promote variability in the community and ultimately maintain diversity. Although it is recognized that global change will affect environmental disturbance regimes, our understanding of the community dynamics governing ecosystem recovery and the maintenance of functional diversity in future scenarios is very limited. Here, we use one of the few ecosystems naturally exposed to future scenarios of environmental change to examine disturbance and recovery dynamics. We examine the recovery patterns of marine species from a physical disturbance across different acidification regimes caused by volcanic CO
<jats:sub>2</jats:sub>
vents. Plots of shallow rocky reef were cleared of all species in areas of ambient, low, and extreme low pH that correspond to near-future and extreme scenarios for ocean acidification. Our results illustrate how acidification decreases the variability of communities, resulting in homogenization and reduced functional diversity at a landscape scale. Whereas the recovery trajectories in ambient pH were highly variable and resulted in a diverse range of assemblages, recovery was more predictable with acidification and consistently resulted in very similar algal-dominated assemblages. Furthermore, low pH zones had fewer signs of biological disturbance (primarily sea urchin grazing) and increased recovery rates of the dominant taxa (primarily fleshy algae). Together, our results highlight how environmental change can cause ecosystem simplification via environmentally mediated changes in community dynamics in the near future, with cascading impacts on functional diversity and ecosystem function.
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| author | Kroeker, Kristy J., Gambi, Maria Cristina, Micheli, Fiorenza |
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| description | <jats:p> Disturbances are natural features of ecosystems that promote variability in the community and ultimately maintain diversity. Although it is recognized that global change will affect environmental disturbance regimes, our understanding of the community dynamics governing ecosystem recovery and the maintenance of functional diversity in future scenarios is very limited. Here, we use one of the few ecosystems naturally exposed to future scenarios of environmental change to examine disturbance and recovery dynamics. We examine the recovery patterns of marine species from a physical disturbance across different acidification regimes caused by volcanic CO <jats:sub>2</jats:sub> vents. Plots of shallow rocky reef were cleared of all species in areas of ambient, low, and extreme low pH that correspond to near-future and extreme scenarios for ocean acidification. Our results illustrate how acidification decreases the variability of communities, resulting in homogenization and reduced functional diversity at a landscape scale. Whereas the recovery trajectories in ambient pH were highly variable and resulted in a diverse range of assemblages, recovery was more predictable with acidification and consistently resulted in very similar algal-dominated assemblages. Furthermore, low pH zones had fewer signs of biological disturbance (primarily sea urchin grazing) and increased recovery rates of the dominant taxa (primarily fleshy algae). Together, our results highlight how environmental change can cause ecosystem simplification via environmentally mediated changes in community dynamics in the near future, with cascading impacts on functional diversity and ecosystem function. </jats:p> |
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| spelling | Kroeker, Kristy J. Gambi, Maria Cristina Micheli, Fiorenza 0027-8424 1091-6490 Proceedings of the National Academy of Sciences Multidisciplinary http://dx.doi.org/10.1073/pnas.1216464110 <jats:p> Disturbances are natural features of ecosystems that promote variability in the community and ultimately maintain diversity. Although it is recognized that global change will affect environmental disturbance regimes, our understanding of the community dynamics governing ecosystem recovery and the maintenance of functional diversity in future scenarios is very limited. Here, we use one of the few ecosystems naturally exposed to future scenarios of environmental change to examine disturbance and recovery dynamics. We examine the recovery patterns of marine species from a physical disturbance across different acidification regimes caused by volcanic CO <jats:sub>2</jats:sub> vents. Plots of shallow rocky reef were cleared of all species in areas of ambient, low, and extreme low pH that correspond to near-future and extreme scenarios for ocean acidification. Our results illustrate how acidification decreases the variability of communities, resulting in homogenization and reduced functional diversity at a landscape scale. Whereas the recovery trajectories in ambient pH were highly variable and resulted in a diverse range of assemblages, recovery was more predictable with acidification and consistently resulted in very similar algal-dominated assemblages. Furthermore, low pH zones had fewer signs of biological disturbance (primarily sea urchin grazing) and increased recovery rates of the dominant taxa (primarily fleshy algae). Together, our results highlight how environmental change can cause ecosystem simplification via environmentally mediated changes in community dynamics in the near future, with cascading impacts on functional diversity and ecosystem function. </jats:p> Community dynamics and ecosystem simplification in a high-CO <sub>2</sub> ocean Proceedings of the National Academy of Sciences |
| spellingShingle | Kroeker, Kristy J., Gambi, Maria Cristina, Micheli, Fiorenza, Proceedings of the National Academy of Sciences, Community dynamics and ecosystem simplification in a high-CO 2 ocean, Multidisciplinary |
| title | Community dynamics and ecosystem simplification in a high-CO 2 ocean |
| title_full | Community dynamics and ecosystem simplification in a high-CO 2 ocean |
| title_fullStr | Community dynamics and ecosystem simplification in a high-CO 2 ocean |
| title_full_unstemmed | Community dynamics and ecosystem simplification in a high-CO 2 ocean |
| title_short | Community dynamics and ecosystem simplification in a high-CO 2 ocean |
| title_sort | community dynamics and ecosystem simplification in a high-co <sub>2</sub> ocean |
| title_unstemmed | Community dynamics and ecosystem simplification in a high-CO 2 ocean |
| topic | Multidisciplinary |
| url | http://dx.doi.org/10.1073/pnas.1216464110 |