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Using citizen science to parse climatic and land cover influences on bird occupancy in a tropical biodiversity hotspot
Ecography ( IF 5.9 ) Pub Date : 2022-06-23 , DOI: 10.1111/ecog.06075
Vijay Ramesh 1 , Pratik Rajan Gupte 2 , Morgan W. Tingley 3 , V. V. Robin 4 , Ruth DeFries 1
Affiliation  

Disentangling associations between species occupancy and its environmental drivers –– climate and land cover –– along tropical mountains is imperative to predict species distributional changes in the future. Previous studies have primarily focused on identifying such associations in temperate mountain systems. Using 1.29 million robustly processed citizen science observations contributed to eBird between 2013 and 2021, we examined the role of climatic and landscape variables and its association with bird species occurrence within a tropical biodiversity hotspot, the southern Western Ghats in India. Using an occupancy modeling framework, we found that temperature seasonality, precipitation seasonality, and the proportion of evergreen forests were significantly associated with species-specific probabilities of occupancy for 78% (n=43 birds), 38% (n=21 birds), and 27% (n=15 birds) of bird species examined, respectively. Our study shows that several forest birds (n=18 species) were negatively associated with temperature seasonality, highlighting narrow thermal niches for such species. The probability of occupancy of six forest species and eight generalist species was positively associated with precipitation seasonality, indicating potential associations between rainfall and resource availability, and thereby, species occurrence. A smaller number of largely generalist species (n=9 birds) were positively associated with human-modified land cover types –– including the proportion of agriculture/settlements and plantations. Our study shows that rigorously filtered citizen science observations can be used to identify associations between environmental drivers and species occupancy on tropical mountains. Though current distributions of tropical montane birds of the Western Ghats are strongly associated with climatic factors (mainly, temperature seasonality), naturally occurring land cover types (forests) are critical to sustaining montane avifauna across human-modified landscapes in the long run.

中文翻译:

利用公民科学分析气候和土地覆盖对热带生物多样性热点地区鸟类居住的影响

解开沿着热带山脉的物种占有率与其环境驱动因素——气候和土地覆盖——之间的关联,对于预测未来物种分布的变化是必不可少的。以前的研究主要集中在确定温带山区系统中的这种关联。使用 129 万个经过稳健处理的公民科学观察结果为eBird做出了贡献在 2013 年至 2021 年期间,我们研究了气候和景观变量的作用及其与热带生物多样性热点印度西高止山脉南部鸟类物种发生的关系。使用占用建模框架,我们发现温度季节性、降水季节性和常绿森林的比例与 78%(n=43 只鸟)、38%(n=21 只鸟)的特定物种占用概率显着相关,和 27%(n=15 只)的鸟类分别被检查。我们的研究表明,几种森林鸟类(n = 18 种)与温度季节性呈负相关,突出了这些物种的狭窄热生态位。六种森林物种和八种通才物种的占有概率与降水季节性呈正相关,表明降雨与资源可用性之间的潜在关联,从而表明物种的出现。少数多面性物种(n = 9 只鸟类)与人为改变的土地覆盖类型呈正相关——包括农业/定居点和种植园的比例。我们的研究表明,经过严格筛选的公民科学观察结果可用于确定环境驱动因素与热带山区物种占有率之间的关联。尽管目前西高止山脉热带山地鸟类的分布与气候因素(主要是温度季节性)密切相关,但从长远来看,自然发生的土地覆盖类型(森林)对于在人类改造的景观中维持山地鸟类至关重要。物种发生。少数多面性物种(n = 9 只鸟类)与人为改变的土地覆盖类型呈正相关——包括农业/定居点和种植园的比例。我们的研究表明,经过严格筛选的公民科学观察结果可用于确定环境驱动因素与热带山区物种占有率之间的关联。尽管目前西高止山脉热带山地鸟类的分布与气候因素(主要是温度季节性)密切相关,但从长远来看,自然发生的土地覆盖类型(森林)对于在人类改造的景观中维持山地鸟类至关重要。物种发生。少数多面性物种(n = 9 只鸟类)与人为改变的土地覆盖类型呈正相关——包括农业/定居点和种植园的比例。我们的研究表明,经过严格筛选的公民科学观察结果可用于确定环境驱动因素与热带山区物种占有率之间的关联。尽管目前西高止山脉热带山地鸟类的分布与气候因素(主要是温度季节性)密切相关,但从长远来看,自然发生的土地覆盖类型(森林)对于在人类改造的景观中维持山地鸟类至关重要。少数多面性物种(n = 9 只鸟类)与人为改变的土地覆盖类型呈正相关——包括农业/定居点和种植园的比例。我们的研究表明,经过严格筛选的公民科学观察结果可用于确定环境驱动因素与热带山区物种占有率之间的关联。尽管目前西高止山脉热带山地鸟类的分布与气候因素(主要是温度季节性)密切相关,但从长远来看,自然发生的土地覆盖类型(森林)对于在人类改造的景观中维持山地鸟类至关重要。少数多面性物种(n = 9 只鸟类)与人为改变的土地覆盖类型呈正相关——包括农业/定居点和种植园的比例。我们的研究表明,经过严格筛选的公民科学观察结果可用于确定环境驱动因素与热带山区物种占有率之间的关联。尽管目前西高止山脉热带山地鸟类的分布与气候因素(主要是温度季节性)密切相关,但从长远来看,自然发生的土地覆盖类型(森林)对于在人类改造的景观中维持山地鸟类至关重要。我们的研究表明,经过严格筛选的公民科学观察结果可用于确定环境驱动因素与热带山区物种占有率之间的关联。尽管目前西高止山脉热带山地鸟类的分布与气候因素(主要是温度季节性)密切相关,但从长远来看,自然发生的土地覆盖类型(森林)对于在人类改造的景观中维持山地鸟类至关重要。我们的研究表明,经过严格筛选的公民科学观察结果可用于确定环境驱动因素与热带山区物种占有率之间的关联。尽管目前西高止山脉热带山地鸟类的分布与气候因素(主要是温度季节性)密切相关,但从长远来看,自然发生的土地覆盖类型(森林)对于在人类改造的景观中维持山地鸟类至关重要。
更新日期:2022-06-23
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