Journal
COMMUNICATIONS BIOLOGY
Volume 4, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s42003-021-01712-2
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Funding
- Japan Society for the Promotion of Science (JSPS) KAKENHI [17K17622]
- Ministry of the Environment, Government of Japan [Suishinhi: 4RF-1701]
- Grants-in-Aid for Scientific Research [17K17622] Funding Source: KAKEN
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Human activities are rapidly changing coastal marine ecosystems, with ocean acidification promoting the growth of turf algae and stabilizing degraded habitats. This explains why degraded coastal habitats persist despite being pushed past tipping points by global and local stressors.
Human activities are rapidly changing the structure and function of coastal marine ecosystems. Large-scale replacement of kelp forests and coral reefs with turf algal mats is resulting in homogenous habitats that have less ecological and human value. Ocean acidification has strong potential to substantially favour turf algae growth, which led us to examine the mechanisms that stabilise turf algal states. Here we show that ocean acidification promotes turf algae over corals and macroalgae, mediating new habitat conditions that create stabilising feedback loops (altered physicochemical environment and microbial community, and an inhibition of recruitment) capable of locking turf systems in place. Such feedbacks help explain why degraded coastal habitats persist after being initially pushed past the tipping point by global and local anthropogenic stressors. An understanding of the mechanisms that stabilise degraded coastal habitats can be incorporated into adaptive management to better protect the contribution of coastal systems to human wellbeing.
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