Higher spatial resolution is not always better: evaluating satellite-sensed sea surface temperature products for a west Pacific coral reef system

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 8, 2025

Abstract As marine heatwaves and mass coral bleaching events rise in frequency severity, there is an increasing need for high-resolution satellite products that accurately predict reef thermal environments over large spatio-temporal scales. Deciding which global sea surface temperature (SST) dataset to use research or management depends part on the desired spatial resolution. Here, we evaluate two SST datasets – lower-resolution CoralTemp v3.1 (0.05° ~ 5 km grid) Multiscale Ultra-high Resolution MUR v4.1 (0.01° 1 their ability situ (nightly mean daily maximum) severity of past Palau, western Pacific Ocean. We expected higher-resolution data improve prediction accuracy, yet explained 10% additional variability temperatures 70% variance bleaching. This likely relates differential protocols; despite using a higher resolution grid, achieves raw observation density coastal areas by utilising geostationary satellites. SSTs were also consistently more variable. These results reinforce calls develop accurate reefs. Our paper demonstrates not necessarily better at predicting reefs local heatwave impacts.

Language: Английский

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Thermal tolerance traits of individual corals are widely distributed across the Great Barrier Reef

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2030)

Published: Sept. 1, 2024

Adaptation of reef-building corals to global warming depends upon standing heritable variation in tolerance traits which selection can act. Yet limited knowledge exists on heat-tolerance among conspecific individuals separated by metres hundreds kilometres. Here, we performed standardized acute heat-stress assays quantify the thermal 709 colonies

Language: Английский

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Natural selection could determine whether Acropora corals persist under expected climate change

Science, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 28, 2024

Marine heatwaves are intensifying under climate change, exposing populations of reef-building corals to mass mortality and intense selective pressure. It remains unknown whether adaptation can keep pace with warming maintain reef functioning. We have developed an eco-evolutionary metapopulation model for Acropora , ecologically important yet highly threatened coral taxon. find that although some capacity, they will suffer severe heatwave-induced declines over the coming decades. For a future where emissions lead ~3°C global warming, natural selection could allow persist, albeit in severely depleted states elevated extinction risk potential loss ecosystem Yet, thermally sensitive thrive post-2050 demands rapid reductions greenhouse gas limit 2°C.

Language: Английский

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Higher spatial resolution is not always better: evaluating satellite-sensed sea surface temperature products for a west Pacific coral reef system

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 4, 2024

As marine heatwaves and mass coral bleaching events rise in frequency severity, there is an increasing need for high-resolution satellite products that accurately predict reef thermal environments over large spatio-temporal scales. Deciding which global sea surface temperature (SST) dataset to use research or management depends on desired spatial resolution. Here, we evaluate two SST datasets – the lower-resolution CoralTemp v3.1 (0.05° ~5km grid) Multiscale Ultra-high Resolution MUR v4.1 (0.01° ~1km their ability situ (nightly mean daily maximum) severity of past Palau, western Pacific Ocean. We expected higher-resolution data improve prediction accuracy, yet explained 10% additional variability temperatures 70% variance bleaching. This likely relates differential protocols; despite using a higher resolution grid, achieves raw observation density coastal areas by utilising geostationary satellites. SSTs were also consistently more variable. These results reinforce calls develop accurate reefs. Our paper demonstrates not necessarily better at predicting local heatwave impacts.

Language: Английский

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Heat-tolerant corals thrive outside ocean hotspots

Trends in Ecology & Evolution, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 1, 2024

Language: Английский

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