受到威胁的陆地卡迪索马 (Cardisoma guanhumi) 是否正在征服人类主导的系统?
José M Riascos1,2, Levy D Obonaga3, Jhostin Ramos4
1Corporación Académica Ambiental Universidad de Antioquia-Sede Ciencias del Mar Turbo Antioquia Colombia.
Ecology and evolution
|April 29, 2024
概括
危食用 (Cardisoma guanhumi) 在城市和农业地区惊人地繁荣,扩大了它们的范围. 然而,过度开发正在减少它们的最大体型,突出了人类主导的生态系统的保护需求.
科学领域:
- 海洋生物学 海洋生物学
- 保护生物学 保护生物学
- 城市生态城市生态学
背景情况:
- 土地利用变化是生物多样性丧失的主要驱动因素.
- 城市化正在迅速增加,特别是在沿海海洋系统.
- 一些危物种越来越多地出现在人类主导的息地.
研究的目的:
- 研究人类主导系统中危食用 (Cardisoma guanhumi) 的繁殖情况.
- 为了评估人口动态,分布和利用后果跨空间尺度.
- 了解危物种如何适应人为环境.
主要方法:
- 收集了包括受威胁地区在内的整个分布范围内的种群数据.
- 在本地范围内比较的丰富性,分布和大小结构在自然和人类扰乱的息地 (耕地,城市地区).
- 汇编了关于种群在它们分布范围内的各种息地的已公布数据.
主要成果:
- 卡迪森马 (Cardisoma guanhumi) 在自然和人为改变的息地都能壮成长,即使有改变的食物来源.
- 在大规模的自然和人为息地之间,没有发现丰富度或尺寸结构的显著差异.
- 南部范围边缘附近的种群在城市/耕地地区更丰富,更大,这表明人类系统促进了范围的扩张.
- 长期观察到最大体型的减少,与土地利用变化和针对更大个体的剥削有关.
结论:
- 人类主导的系统,如城市和农业地区,可以充当关键的息地和脚石,为危物种的范围扩大.
- 尽管繁荣,但食用面临着从剥削中产生的人口层面的影响,最大体型的减少证明了这一点.
- 保护战略必须承认并整合人类修饰的景观在支持危物种种群中的作用.
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