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极度危的Microcebus gerpi在其分散的范围内的丰度和息地使用的变化
Romule Rakotondravony1,2, Dominik Schüßler3, Valisoa S T Rovanirina1
1Faculté des Sciences, de Technologies et de l'Environnement, University of Mahajanga, Mahajanga, Madagascar.
American journal of primatology
|September 26, 2023
概括
极度危的Microcebus gerpi或格尔普老鼠比以前认为的分布更广,但由于息地碎片化和人类干扰而面临威胁. 保护工作对于其长期生存至关重要.
科学领域:
- 灵长类动物生态学
- 保护生物学 保护生物学
- 生物多样性研究的研究.
背景情况:
- 生态专业化和物种丰富性在灵长类动物中是相互关联的.
- 许多鱼物种,包括Microcebus gerpi,缺乏足够的生态数据.
- 息地碎片化对灵长类种群构成重大威胁.
研究的目的:
- 调查Microcebus gerpi.的息地使用,丰度和特征.
- 评估植被结构对M. gerpi丰富性的影响.
- 评估人类干扰对M. gerpi丰度变化的影响.
主要方法:
- 在七个研究地点沿着13个横断线进行了系统的夜间调查.
- 描述了植被结构和量化的人类干扰 (火灾,牛,木炭生产,木材开采).
- 采用统计建模来分析与息地和干扰因素相关的丰度变化.
主要成果:
- Microcebus gerpi占据低地雨林和沿海森林碎片,表明生态可塑性比以前假设的更广泛.
- 由于息地极度分散,实际占用面积仅限于339.78平方公里.
- 丰度差异很大 (0.75-4.5个/公里),受中小型树木的积极影响,受人类干扰的负面影响 (综合干扰得分).
结论:
- 麦克罗塞布斯 (Microcebus gerpi) 的地理分布较大,但由于息地碎片化,它仍然很脆弱.
- 人类干扰显著减少了M. gerpi的丰富性,引发了保护方面的担忧.
- 孤立的M. gerpi种群的长期生存能力是可疑的,需要有针对性的保护策略.
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