Impacts of ocean acidification on marine organisms: quantifying sensitivities and interaction with warming
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Abstract
Ocean acidification represents a threat to marine species worldwide, and forecasting the ecological impacts of acidification is a high priority for science, management, and policy. As research on the topic expands at an exponential rate, a comprehensive understanding of the variability in organisms' responses and corresponding levels of certainty is necessary to forecast the ecological effects. Here, we perform the most comprehensive meta-analysis to date by synthesizing the results of 228 studies examining biological responses to ocean acidification. The results reveal decreased survival, calcification, growth, development and abundance in response to acidification when the broad range of marine organisms is pooled together. However, the magnitude of these responses varies among taxonomic groups, suggesting there is some predictable trait-based variation in sensitivity, despite the investigation of approximately 100 new species in recent research. The results also reveal an enhanced sensitivity of mollusk larvae, but suggest that an enhanced sensitivity of early life history stages is not universal across all taxonomic groups. In addition, the variability in species' responses is enhanced when they are exposed to acidification in multi-species assemblages, suggesting that it is important to consider indirect effects and exercise caution when forecasting abundance patterns from single-species laboratory experiments. Furthermore, the results suggest that other factors, such as nutritional status or source population, could cause substantial variation in organisms' responses. Last, the results highlight a trend towards enhanced sensitivity to acidification when taxa are concurrently exposed to elevated seawater temperature.
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The record
- Venue
- Global Change Biology
- Topic
- Ocean Acidification Effects and Responses
- Field
- Earth and Planetary Sciences
- Canadian institutions
- University of British Columbia
- Funders
- —
- Keywords
- Ocean acidificationAbundance (ecology)EcologyBiologyClimate changeRange (aeronautics)Effects of global warming on oceansMarine speciesPopulationClimate sensitivityTaxonomic rankEnvironmental scienceGlobal warmingTaxonClimate model
- Has abstract in OpenAlex
- yes