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"Today, warm-water coral reefs in tropical-to-subtropical latitudes are restricted to tropical-to-subtropical latitudes. " We explore the role of climate and palaeogeography in shaping coral reef distribution over geological timescales here. Due to an extended tropical belt and more equidized delivery of shallow marine substrate, a broader latitudinal distribution of climatically suitable habitat persisted throughout much of the Mesozoic-early Paleogene. Although our results show that global warming may allow long-term poleward range expansions, coral reef ecosystems are unlikely to keep pace with the rapid rate of anthropogenic climate change.
Source link: https://europepmc.org/article/MED/35701413
"Coral reef decline has accelerated in the last two decades, resulting in substantial research into the phenomenon of 'phase shifts' or'regime shifts. ' We found significant differences in the methods used for testing phase shifts in doing so. Notably, only a few studies have specifically outlined what they meant by phase shifts. In the meanwhile, we developed a concrete definition of phase shifts, which specifically identified persistence and dominance. On the Great Barrier Reef, multi-decadal benthic composition data was used to establish this classification.
Source link: https://europepmc.org/article/MED/35653967
"Results show that a resilient demographic system of massive taxa and substantial differences in SFD were found throughout a range of reef health gradients, whereby degraded sites were mainly defined by poor skewed and leptokurtic distribution of dominant hard coral taxa. Overall, results indicate that locally coral reef degradation can exceed tipping points, after which annual monsoon conditions and degraded reef substrates interact to reinforce and create negative feedback loops, ultimately prompting demographic recovery and increasing coral reef assemblage and population fluctuation. ".
Source link: https://europepmc.org/article/PPR/PPR496430
"We demonstrate that restricting motorboat operations on reefs results in the survival of more fish offspring than reefs that see busy motorboat traffic on the Great Barrier Reef. " Our findings indicate that noise mitigation could have advantages that carry through to the population's level by increasing adult reproductive reproduction and offspring growth, thus shielding coral reefs from human impacts and enhancing ecosystem stability.
Source link: https://europepmc.org/article/MED/35595750
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