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冷水河鱼种群的空间异步和跨度气候相互作用

George P Valentine¹, Xinyi Lu², Evan S Childress³

¹Department of Fish, Wildlife, and Conservation Biology and Graduate Degree Program in Ecology, Colorado State University, Fort Collins, Colorado, USA.

Global change biology

|November 21, 2023

概括

由于气候变化,布鲁克鱼种群在它们的范围中表现出不同的同步性. 识别有弹性的种群是这条冷水鱼的保护计划的关键.

科学领域:

生态生态学生态生态学
保护生物学保护生物学
气候变化科学气候变化科学

背景情况:

气候变化通过相关的环境条件 (莫兰效应) 对大面积的物种产生影响.
人口对气候变化的反应并不总是跨景观同步.
溪鱼 (Salvelinus fontinalis) 是一种冷水鱼,对温度和流量变化很敏感.

研究的目的:

分析鱼在其南部原生范围的种群结构和空间同步性.
了解气候变化如何影响不同生命阶段和地理区域的鱼种群.
在应对气候变化时,确定导致人口同步和异步的因素.

主要方法:

从144个流段的时间序列计数数据的回顾性分析.
收集的数据超过5-28个年度样本,每段跨越近1000个线性公里.
人口同步与气候变量 (温度,降水,溪流流量) 的比较.

主要成果:

空间同步因生命阶段 (青少年更强) 和区域 (北方更强) 而有所不同.
布鲁克鱼种群同步延伸100-200公里,但比气候变量同步弱.
气候对丰富性的影响在不同地区和当地人口之间存在差异,导致了适度的空间同步.
观察到比以前报告的响应异质性和人口异步性更大.

结论:

当地鱼种群在应对气候变化的过程中表现出显著的异质性.
呈现异步和对气候变化的抵抗性的种群可能是独一无二的,需要有针对性的保护.
保护战略应该识别并将这些有弹性的种群纳入景观层面的规划.
该方法适用于其他气候敏感水生物种.

关键词:

贝叶斯语贝叶斯语贝叶斯语贝叶斯语布鲁克鱼是一种鱼.气候气候气候气候气候气候气候气候气候投资组合效应投资组合效应鱼溪鱼溪鱼溪鱼溪鱼溪时间同步是同步的.天气天气天气天气天气.

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