期刊
DIVERSITY-BASEL
卷 13, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/d13120632
关键词
climate change; coral-algal interactions; high-latitude reefs; Solitary Islands
资金
- Australian Research Council Centre of Excellence for Coral Reef Studies [CE140100020]
Reef-building corals exhibit a decrease in species richness from the tropics to high latitudes, with various hypotheses proposed to explain this pattern. However, there is a lack of data supporting several of these hypotheses. Understanding the factors limiting coral distribution is crucial to predict range expansions and the potential role of high latitude reefs as refuges from climate change.
Reef-building corals show a marked decrease in total species richness from the tropics to high latitude regions. Several hypotheses have been proposed to account for this pattern in the context of abiotic and biotic factors, including temperature thresholds, light limitation, aragonite saturation, nutrient or sediment loads, larval dispersal constraints, competition with macro-algae or other invertebrates, and availability of suitable settlement cues or micro-algal symbionts. Surprisingly, there is a paucity of data supporting several of these hypotheses. Given the immense pressures faced by corals in the Anthropocene, it is critical to understand the factors limiting their distribution in order to predict potential range expansions and the role that high latitude reefs can play as refuges from climate change. This review examines these factors and outlines critical research areas to address knowledge gaps in our understanding of light/temperature interactions, coral-Symbiodiniaceae associations, settlement cues, and competition in high latitude reefs.
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