评论"气候水平衡的变化导致植物物种最佳海拔的下坡变化"
1Department of Environmental Science and Policy, University of California, Davis, Davis, CA 95616, USA. rhijmans@ucdavis.edu
概括
植物物种没有显示出一般的下坡转移. 纠正地理偏差的重新分析发现没有证据支持最初的说法,即物种迁移到较低的海拔.
科学领域:
- 生态生态学 生态生态学
- 植物学 植物学
- 气候变化研究 气候变化研究
背景情况:
- 之前的研究表明,植物物种因环境变化而改变了它们的范围.
- 犯罪和其他人. 报告说,1935年至2005年间,植物物种的下坡变化发生了.
研究的目的:
- 重新评估报告的植物物种下坡转移情况.
- 调查原始研究方法的潜在地理偏见.
主要方法:
- 历史 (1935年) 和现代 (2005年) 情节数据的比较.
- 为地理位移进行了校正,特别注意了现代地块与历史地块相比的向北移动.
主要成果:
- 原始研究对图片数据的比较是有缺陷的,原因是地理偏见.
- 经过对现代地块向北移动的纠正后,植物物种普遍下坡移动的证据没有得到支持.
结论:
- 关于一般下坡植物物种转移的说法在考虑地理偏差时是没有根据的.
- 在生态研究中,方法论的严谨性至关重要,以避免关于物种范围转移的虚假结论.
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