土地覆盖面和空间利用影响小鹿肉食:来自稳定同位素分析的证据
Sarah C Webster1, Joseph W Hinton2, Michael J Chamberlain3
1Warnell School of Forestry and Natural Resources, University of Georgia, Savannah River Ecology Laboratory, Aiken, South Carolina, United States.
PeerJ
|June 10, 2024
概括
狼的饮食成分很复杂,受到空间利用和土地覆盖的影响. 尽管食物来源有所不同,但居住和过渡的小狼主要食用哺乳动物,显示出食连续性.
科学领域:
- 生态生态学 生态生态学
- 野生动物生物学 野生动物生物学
- 保护科学 保护科学
背景情况:
- 动物的空间使用和其饮食之间的关系是复杂的,物种采用诸如资源获取的领土性等策略.
- 野狼 (Canis latrans) 显示出不同的空间使用模式:居民捍卫领土,而过渡者游牧,影响食和能源成本.
研究的目的:
- 为了研究美国东南部居民和过渡的野狼的饮食组成.
- 通过稳定同位素分析,分析空间使用模式和土地覆盖面对猎饮食的影响.
主要方法:
- 在2016-2017年期间,GPS无线电项圈被用于监测萨凡纳河地区的41只野狼 (26名居民,15名过渡者).
- 考约特组织的稳定同位素分析 (碳 δ13C和 δ15N) 用于评估食成分.
- 使用稳定同位素混合模型来确定不同食物来源的比例贡献.
主要成果:
- 树冠覆盖显著影响了 δ13C 值,而农业覆盖和道路密度影响了 δ15N 值,表明土地覆盖影响了饮食.
- 人类产生的食物来源在狼的饮食中是最小的.
- 虽然食物来源的比例贡献有所不同,但居留和过渡野狼之间的饮食没有显著差异,两者都主要食用哺乳动物猎物.
结论:
- 狼种群表现出一种从万食到肉食的食连续性.
- 战狼养策略的变化受到土地覆盖特征和空间使用行为的影响.
- 尽管策略不同,但猎犬对哺乳动物猎物的依赖仍然是一致的,突出了生态内的适应性.
关键词:
人为补贴 人为补贴卡尼斯拉特朗斯 (Canis latrans) 的意思饮食 饮食 饮食 饮食空间使用空间使用.稳定的同位素是稳定的.暂时的 暂时的 暂时的白尾鹿是一种白尾鹿.野生火是野生的火.δ 13C 13C 的时间.δ 15N 15N 的时间.更多相关视频
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