Effects of future climate on coral-coral competition
As carbon dioxide (CO 2 ) levels increase, coral reefs and other marine systems will be affected by the joint stressors of ocean acidification (OA) and warming. The effects of these two stressors on coral physiology are relatively well studied, but their impact on biotic interactions between corals...
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ftzenodo:oai:zenodo.org:4268503 2024-09-15T18:28:03+00:00 Effects of future climate on coral-coral competition Johnston, Nicole Hay, Mark Paul, Valerie Campbell, Justin 2020-11-11 https://doi.org/10.5061/dryad.7pvmcvdqr unknown Zenodo https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.7pvmcvdqr oai:zenodo.org:4268503 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode info:eu-repo/semantics/other 2020 ftzenodo https://doi.org/10.5061/dryad.7pvmcvdqr 2024-07-26T20:02:20Z As carbon dioxide (CO 2 ) levels increase, coral reefs and other marine systems will be affected by the joint stressors of ocean acidification (OA) and warming. The effects of these two stressors on coral physiology are relatively well studied, but their impact on biotic interactions between corals are poorly understood. While coral-coral interactions are less common on modern reefs, it is important to document the nature of these interactions to better inform restoration strategies in the face of climate change. Using a mesocosm study, we evaluated whether the combined effects of ocean acidification and warming alter the competitive interactions between the common coral Porites astreoides and two other mounding corals ( Montastraea cavernosa or Orbicella faveolata ) common in the Caribbean. After 7 days of direct contact, P. astreoides suppressed the photosynthetic potential of M. cavernosa by 100% in areas of contact under both present (~28.5°C and ~400 μatm p CO 2 ) and predicted future (~30.0°C and ~1000 μatm p CO 2 ) conditions. In contrast, under present conditions M. cavernosa reduced the photosynthetic potential of P. astreoides by only 38% in areas of contact, while under future conditions reduction was 100%. A similar pattern occurred between P. astreoides and O. faveolata at day 7 post contact, but by day 14, each coral had reduced the photosynthetic potential of the other by 100% at the point of contact, and O. faveolata was generating larger lesions on P. astreoides than the reverse. In the absence of competition, OA and warming did not affect the photosynthetic potential of any coral. These results suggest that OA and warming can alter the severity of initial coral-coral interactions, with potential cascading effects due to corals serving as foundation species on coral reefs. The second experiment ran twice as long as the first experiment, so there are more data points. Some alkalinity samples were lost in the process due to issues with the titrator. Funding provided by: Link Foundation Crossref ... Other/Unknown Material Ocean acidification Zenodo |
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As carbon dioxide (CO 2 ) levels increase, coral reefs and other marine systems will be affected by the joint stressors of ocean acidification (OA) and warming. The effects of these two stressors on coral physiology are relatively well studied, but their impact on biotic interactions between corals are poorly understood. While coral-coral interactions are less common on modern reefs, it is important to document the nature of these interactions to better inform restoration strategies in the face of climate change. Using a mesocosm study, we evaluated whether the combined effects of ocean acidification and warming alter the competitive interactions between the common coral Porites astreoides and two other mounding corals ( Montastraea cavernosa or Orbicella faveolata ) common in the Caribbean. After 7 days of direct contact, P. astreoides suppressed the photosynthetic potential of M. cavernosa by 100% in areas of contact under both present (~28.5°C and ~400 μatm p CO 2 ) and predicted future (~30.0°C and ~1000 μatm p CO 2 ) conditions. In contrast, under present conditions M. cavernosa reduced the photosynthetic potential of P. astreoides by only 38% in areas of contact, while under future conditions reduction was 100%. A similar pattern occurred between P. astreoides and O. faveolata at day 7 post contact, but by day 14, each coral had reduced the photosynthetic potential of the other by 100% at the point of contact, and O. faveolata was generating larger lesions on P. astreoides than the reverse. In the absence of competition, OA and warming did not affect the photosynthetic potential of any coral. These results suggest that OA and warming can alter the severity of initial coral-coral interactions, with potential cascading effects due to corals serving as foundation species on coral reefs. The second experiment ran twice as long as the first experiment, so there are more data points. Some alkalinity samples were lost in the process due to issues with the titrator. Funding provided by: Link Foundation Crossref ... |
format |
Other/Unknown Material |
author |
Johnston, Nicole Hay, Mark Paul, Valerie Campbell, Justin |
spellingShingle |
Johnston, Nicole Hay, Mark Paul, Valerie Campbell, Justin Effects of future climate on coral-coral competition |
author_facet |
Johnston, Nicole Hay, Mark Paul, Valerie Campbell, Justin |
author_sort |
Johnston, Nicole |
title |
Effects of future climate on coral-coral competition |
title_short |
Effects of future climate on coral-coral competition |
title_full |
Effects of future climate on coral-coral competition |
title_fullStr |
Effects of future climate on coral-coral competition |
title_full_unstemmed |
Effects of future climate on coral-coral competition |
title_sort |
effects of future climate on coral-coral competition |
publisher |
Zenodo |
publishDate |
2020 |
url |
https://doi.org/10.5061/dryad.7pvmcvdqr |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.7pvmcvdqr oai:zenodo.org:4268503 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.7pvmcvdqr |
_version_ |
1810469353843326976 |