Is marine spawning timing shifting in the northern Red Sea?
Requested by Red Sea Reef Management Authority · chair Reviewer · 7 panellists
Hour 31 of 72Statement closes Mon 6 Oct, 09:00 UTC
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Rate each study for how directly it answers the question and how sound it is. Recuse from anything you worked on; your rating is then left out.
Monitoring19 years · 6 pagesSpawning dates at Eilat, 2007–2025Mass spawning of Acropora moved 9 days earlier over 19 years, tracking a 1.1 °C rise in spring water temperature.
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Field + lab2023 · 2 speciesSpawning synchrony in the Gulf of AqabaSplit spawning over two lunar months became more common after warm springs; lab colonies held at +1 °C spawned 6 days early.
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Database analysis2024 · 34 regionsGlobal marine spawning database, 1980–2022Global shift is small and uneven. The Red Sea subset is only 41 records, mostly from Eilat.
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Null result2015–2024 · HurghadaNo detectable shift in spawning at HurghadaTen years of surveys found no trend in spawning dates. Published on CitePep as a null result.
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Temperature record1985–2025 · satellite + loggersSea temperature, northern Red SeaSpring warming of 0.4 °C per decade, strongest north of 27° N.
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