森林大象调节他们的行为,以适应危险的声音
Anahita Verahrami1,2, Colin Swider1, Frelcia Bien-Dorvillion Bambi1,3
1Elephant Listening Project, K. Lisa Yang Center for Conservation Bioacoustics, Cornell University, Ithaca, NY, USA.
概括
枪支狩猎显著影响了非洲森林大象 (Loxodonta cyclotis) 的行为. 大象在枪声后减少占用,增加夜间发声,影响它们的生存和森林生态系统.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 生物声学是一种生物声学.
背景情况:
- 非洲森林大象 (Loxodonta cyclotis) 对刚果盆地的森林健康和碳封存至关重要.
- 这种物种在1990年至2021年期间的人口下降了86%,主要是由于象牙狩猎.
- 了解大象对人类干扰的反应,比如枪支狩猎,对于保护至关重要.
研究的目的:
- 评估枪支狩猎对非洲森林大象占用率和夜间声乐活动的影响.
- 为了研究大象在密集的雨林环境中对人类引起的干扰的行为反应.
- 为了证明被动声学监测 (PAM) 对研究难以捉摸的物种的有用性.
主要方法:
- 在刚果共和国的Nouabalé-Ndoki国家公园及其周围利用了被动声学监测 (PAM).
- 收集声学数据以分析与枪声有关的大象占用和发声模式.
- 在枪击事件后,大象存在和夜间活动的量化变化.
主要成果:
- 在枪击事件发生后,大象占用率下降了大约3.7% (从0.54到0.52),影响持续长达8天.
- 观察到,随着枪声的增加,夜间声乐活动的比例显著增加.
- 这些行为转变表明对狩猎压力的反应加剧.
结论:
- 枪支狩猎对非洲森林大象的行为产生了负面影响,可能会影响食,繁殖和森林生态系统动态.
- PAM是监测热带森林中森林大象等神秘物种的有效工具.
- 迫切需要制定保护战略,以减轻人类的影响,保护森林大象种群及其息地.
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