全球对大型陆地食肉动物死亡率的评估
Luke D Emerson1, Heiko U Wittmer2, L Mark Elbroch3
1Life and Environmental Sciences, Deakin University, 221 Burwood Highway, Melbourne, Victoria, 3125, Australia.
Biological reviews of the Cambridge Philosophical Society
|September 12, 2024
概括
大型食肉动物的杀戮率显示,单身猎人的人均杀戮率高于社会猎人. 了解这些速率对于保护和管理受捕食者数量下降影响的生态系统至关重要.
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:
- 大型陆地食肉动物是重要的生态系统工程师,但由于人类活动而面临人口减少.
- 减少的捕食者种群破坏了全球的食物网和生态系统功能.
- 杀戮率是了解食肉动物生态和掠食影响的关键指标.
研究的目的:
- 系统地审查和综合大型陆地哺乳动物食肉动物的杀戮率数据.
- 确定现有研究中的地理和分类学偏见.
- 为了比较不同类型的食肉动物 (孤独与社会,狩猎策略) 和身体大小的杀戮率.
主要方法:
- 对已发表的大型陆地哺乳动物食肉动物杀害率研究的系统文献综述.
- 基于食肉动物的社会结构,体重和狩猎策略的杀戮率的分析.
- 单独食肉动物和社会食肉动物之间的人均杀戮率的比较.
- 对不同类型的掠食者相对于身体质量的杀戮率趋势的检查.
主要成果:
- 在目前的杀戮率研究中存在显著的地理和分类学偏见,通常是由人肉动物冲突驱动的.
- 孤独的食肉动物的人均杀害率高于社会食肉动物.
- 杀戮率与鱼猎人 (犬类) 的体重有正相关,但与伏击捕食者 (类) 的体重有负相关.
- 附属的食肉动物可能会杀死更多,可能会提供较低的营养水平.
结论:
- 现有的关于食肉动物灭绝率的研究是有限的和有偏见的,阻碍了对它们的生态作用的充分理解.
- 杀死率数据可以澄清捕食者的行为,挑战误解,并为保护策略提供信息.
- 需要进一步的研究来解决缺陷,并改进对生态系统影响的预测,以改变掠食制度.
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