极限外的陆地动物:重新评估阿拉斯加陆地哺乳动物的范围限制
Andrew P Baltensperger1,2,3, Hayley C Lanier4, Link E Olson1
1University of Alaska Museum, University of Alaska Fairbanks, Fairbanks, AK, United States of America.
PloS one
|May 13, 2024
概括
气候变化正在改变阿拉斯加的哺乳动物范围. 一项对61种物种的研究发现,64%的物种有超限记录,这表明了潜在的范围转移,并为保护工作提供了信息.
科学领域:
- 生态生态学 生态生态学
- 动物学 动物学
- 保护生物学 保护生物学
背景情况:
- 像阿拉斯加这样的高度地区处于气候变化影响的最前沿.
- 精确追踪物种的地理范围对于了解和减轻气候变化影响至关重要.
- 之前对阿拉斯加陆地哺乳动物的空间评估已经有十多年了.
研究的目的:
- 评估阿拉斯加陆地哺乳动物的潜在超限记录.
- 为这些物种开发更新的,可重复的基线范围地图.
- 评估现有范围估计与当前发生数据的准确性.
主要方法:
- 对比了全球生物多样性信息设施对61种内陆阿拉斯加哺乳动物的发生记录,与IUCN,阿拉斯加差距分析项目和文献的范围地图相比.
- 映射了超限记录,计算了范围范围内的发生比例,并测量了相对于先前范围边缘的变化.
- 评估了已发表的物种分布模型的预测准确性,并记录了联邦土地上的观察.
主要成果:
- 对61种物种中的39种 (63.9%) 确定了6848个极限外记录.
- 阿拉斯加差距分析项目的范围对于31/37种物种是准确的,但对13种物种的范围是高估的.
- 国际自然保护联盟的范围涵盖了68.1%的现象,对17/39种物种的准确度高于90%.
结论:
- 超限记录可能意味着由于气候变化而改善的数据或真正的地理范围扩展.
- 新的数据驱动范围地图为监测提供了更新的基线.
- 为绘制范围变化和存档位置数据以保护提供了建议.
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