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对于赤道海种群的气候引起的温度升高的短期弹性
Melissa N Staines1, Hayley Versace2, Jacques-Olivier Laloë3
1School of the Environment, The University of Queensland, St. Lucia, Queensland, Australia.
Global change biology
|October 5, 2023
概括
气候变化影响海的性别比例. 这项研究发现,巴布亚新几内亚的一个息地具有平衡的性别比率,与其他地点不同,但预计未来的女性化.
科学领域:
- 海洋生物学 海洋生物学
- 气候变化 生态学 生态学
- 保护科学 保护科学
背景情况:
- 海表现出温度依赖的性别决定,使它们易受气候变化的影响.
- 筑巢海上沙子温度的上升可能会使化幼的性别比率偏向雌性,威胁到种群.
- 在了解气候变化对海繁殖的影响方面,赤道的筑巢地点至关重要.
研究的目的:
- 为了在巴布亚新几内亚的筑巢地点模拟沙子温度的长期趋势和绿色和嘴海的化性别比率.
- 评估气候变化,特别是气温上升和降雨模式对海繁殖成功的影响.
- 为了比较该地点的预计影响与其他已知的筑巢地点.
主要方法:
- 收集了1078天的沙子温度数据从2018-2022年在巴布亚新几内亚的巢穴深度.
- 使用空气温度作为代理生成长期沙子温度趋势的模型 (1960-2019).
- 研究了降雨量和季节性变化的影响沙子温度和预测未来趋势.
主要成果:
- 据估计,1960年至2019年间,沙子温度增加了~0.6°C.
- 在此期间观察到相对平衡的平均化幼性别比率 (46.2%的雌性).
- 在没有干预的情况下,预计未来的性别比率 (2020-2100) 将变得女性倾斜 (76%-87%的女性).
结论:
- 目前,巴布亚新几内亚的息地与雷恩岛等其他地点相比,受到气候诱导的女性化威胁较小.
- 虽然目前的性别比例是平衡的,但未来的干预措施可能是必要的,以确保足够的男性化.
- 这项研究通过长期趋势分析,进一步了解气候变化对海种群的影响.
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