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231226s2024 xx |||||o 00| ||eng c |
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|a 10.1111/gcb.17004
|2 doi
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|a pubmed25n1214.xml
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|a eng
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| 100 |
1 |
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|a Laloë, Jacques-Olivier
|e verfasserin
|4 aut
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|a Climate warming and sea turtle sex ratios across the globe
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 29.01.2024
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|a Date Revised 04.02.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2023 The Authors. Global Change Biology published by John Wiley & Sons Ltd.
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|a Climate warming and the feminization of populations due to temperature-dependent sex determination may threaten sea turtles with extinction. To identify sites of heightened risk, we examined sex ratio data and patterns of climate change over multiple decades for 64 nesting sites spread across the globe. Over the last 62 years the mean change in air temperature was 0.85°C per century (SD = 0.65°C, range = -0.53 to +2.5°C, n = 64 nesting sites). Temperatures increased at 40 of the 64 study sites. Female-skewed hatchling or juvenile sex ratios occurred at 57 of the 64 sites, with skews >90% female at 17 sites. We did not uncover a relationship between the extent of warming and sex ratio (r62 = -0.03, p = .802, n = 64 nesting sites). Hence, our results suggest that female-hatchling sex ratio skews are not simply a consequence of recent warming but have likely persisted at some sites for many decades. So other factors aside from recent warming must drive these variations in sex ratios across nesting sites, such as variations in nesting behaviour (e.g. nest depth), substrate (e.g. sand albedo), shading available and rainfall patterns. While overall across sites recent warming is not linked to hatchling sex ratio, at some sites there is both is a high female skew and high warming, such as Raine Island (Australia; 99% female green turtles; 1.27°C warming per century), nesting beaches in Cyprus (97.1% female green turtles; 1.68°C warming per century) and in the Dutch Caribbean (St Eustatius; 91.5% female leatherback turtles; 1.15°C warming per century). These may be among the first sites where management intervention is needed to increase male production. Continued monitoring of sand temperatures and sex ratios are recommended to help identify when high incubation temperatures threaten population viability
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|a Journal Article
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|a ICOADS
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|a conservation
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|a environmental sex determination
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| 650 |
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|a extinction risk
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| 650 |
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|a latitudinal effect
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| 650 |
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|a marine turtles
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| 650 |
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|a population feminization
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| 650 |
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|a warming temperatures
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| 650 |
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7 |
|a Sand
|2 NLM
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| 700 |
1 |
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|a Schofield, Gail
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hays, Graeme C
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Global change biology
|d 1999
|g 30(2024), 1 vom: 29. Jan., Seite e17004
|w (DE-627)NLM098239996
|x 1365-2486
|7 nnas
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| 773 |
1 |
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|g volume:30
|g year:2024
|g number:1
|g day:29
|g month:01
|g pages:e17004
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| 856 |
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|u http://dx.doi.org/10.1111/gcb.17004
|3 Volltext
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