扰乱和环境变化的影响对一个干旱地带沿海的一般医生
Brian R Blais1, Samantha L Johnson1,2, John L Koprowski1,3
1School of Natural Resources and the Environment, University of Arizona, Tucson, Arizona, United States.
PeerJ
|June 26, 2023
概括
气候变化和极端天气对干旱地带沿海地区的黑带蛇 (Thamnophis cyrtopsis) 产生了负面影响. 保护战略必须考虑这些环境敏感性对脆弱物种.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 类学 类学 类学
背景情况:
- 人为气候变化和生态系统干扰威胁着生物多样性,特别是在脆弱的干旱地带沿海地区.
- 了解生态关系对于制定这些敏感息地的物种有效的保护战略至关重要.
研究的目的:
- 研究黑子带蛇 (Thamnophis cyrtopsis) 对环境条件和干扰的反应的行为和空间生态.
- 分析外部因素如何影响人口动态,行为和微型息地使用.
- 评估视觉横断和无线电遥测对研究这种物种的有效性.
主要方法:
- 研究了亚利桑那州沙比诺峡谷下部的81只黑子带蛇 (2018-2021).
- 采用视觉截图和外部 (磁带) 无线电遥测来跟踪行为和空间生态.
- 在极端炎热,干旱,野火和改变降雨模式期间监测人口动态.
主要成果:
- 观察到2019年至2021年期间黑子带蛇检测概率 (92.8%) 显著下降.
- 与地表水的空间时间联系至关重要;干燥池作为关键的分娩和食地点.
- 微息地协会在不同季节保持一致,表明依赖息地异质性,尽管环境对行为的影响有所不同.
结论:
- 黑子带蛇对重大干扰和气候极端情况表现出不利的反应,这与适应性普遍的预期相反.
- 对T. cyrtopsis等敏感物种的长期监测可以突出其他半水生类在不断变化的生态系统中面临的人口挑战.
- 研究结果可以为气候变化下的干旱地区生态系统的保护管理策略提供信息.
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