在较小的草原息地的大规模变化.
Megan P Vhay1, David A Haukos2, Daniel S Sullins3
1Kansas Cooperative Fish and Wildlife Research Unit, Kansas State University, Manhattan, Kansas, United States of America.
PloS one
|May 31, 2024
概括
由于息地丧失,较小的草原种群已经减少. 石油井和电力线等人类结构的增加可能会降低息地质量和可用性.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 野生动物管理 野生动物管理
背景情况:
- 自20世纪80年代中期以来,小草原 (Tympanuchus pallidicinctus) 种群在沙草原生态区域急剧下降.
- 息地丧失和退化是这些人口减少的主要可疑驱动因素.
- 了解景观变化对于较小的草原的保护至关重要.
研究的目的:
- 重建1985年至2015年沙沙布鲁什草原生态区域的大规模陆地覆盖和人为变化.
- 评估这些变化对较小的草原种群的潜在影响.
- 确定导致人口减少的景观因素.
主要方法:
- 利用土地变化监测,评估和预测 (LCMAP) 图像层来评估1985-2015年陆地覆盖类型的时间变化.
- 计算的景观指标来量化息地特征和变化.
- 记录了人为结构的存在和增加,包括油井,电话塔,风力发电场和电力传输线路.
主要成果:
- 自1990年以来,土地覆盖类型的构成在沙沙沙草原生态区域中保持相对稳定.
- 观察到人为结构的密度和范围的显著增加.
- 这些结构可能导致功能性息地丧失和碎片化.
结论:
- 虽然陆地覆盖的构成并没有发生重大变化,但人为结构的扩散是景观的重大变化.
- 人类基础设施的增加可能会降低低草原的息地可用性和质量.
- 人类发育可能是导致该生态区域中较小的草原种群数量下降的因素.
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