高尔夫球场的生活导致美国鱼的饮食转变
Adam E Rosenblatt1, Robert Greco1, Eli Beal1
1University of North Florida Jacksonville Florida USA.
Ecology and evolution
|September 4, 2023
概括
人类的土地使用改变了捕食者的饮食. 在发达的杰基尔岛上,美国幼食用昆虫,而在天然的萨佩洛岛上,它们食用甲类动物,表现出改变的食模式.
科学领域:
- 生态生态学 生态生态学
- 野生动物生态生态学
- 保护生物学 保护生物学
背景情况:
- 人类驱动的土地利用变化对生态社区,特别是大型掠食者种群产生重大影响.
- 在人类主导的景观中,大型捕食者的食生态仍未得到充分研究,鱼在很大程度上被忽视了.
- 了解这些变化对于捕食者保护和生态系统健康至关重要.
研究的目的:
- 研究土地使用变化如何影响美国鱼 (Alligator mississippiensis) 幼的食模式.
- 为了比较一个发达的岛屿 (杰基尔岛) 的鱼饮食,高的人类活动和一个自然的岛屿 (萨佩洛岛) 的人类活动较低.
主要方法:
- 来自美国乔治亚州杰基尔岛和萨佩洛岛的美国幼鱼的饮食分析.
- 猎物类型和鱼在对比的人类影响和自然环境中消耗的数量的比较.
主要成果:
- 两个岛上的鱼都消耗了类似的猎物类别,但比例不同.
- 杰基尔岛的鱼主要吃昆虫/虫,而萨佩洛岛的鱼主要吃甲类动物.
- 杰基尔岛的鱼表现出更普遍的饮食,而萨佩洛岛的鱼则表现出更专业的饮食.
结论:
- 土地利用的变化,以高尔夫球场和人类活动为例,显著改变了鱼的养模式.
- 人类主导地区的息地使用和猎物可用性转变是这些饮食变化的可能驱动因素.
- 改变养模式可能对捕食者健康,化学物质暴露和生态角色产生级联影响.
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