个体层面的资源选择模式不能预测接触热点。

IF 3.4 1区 生物学 Q2 ECOLOGY Movement Ecology Pub Date : 2023-11-30 DOI:10.1186/s40462-023-00435-9
Anni Yang, Raoul Boughton, Ryan S Miller, Nathan P Snow, Kurt C Vercauteren, Kim M Pepin, George Wittemyer
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引用次数: 0

摘要

动物之间的接触对各种生态过程至关重要,包括社会行为、疾病传播和捕食者-猎物相互作用。然而,受环境因素和生物目的的影响,接触事件在时间和空间上的分布是异质性的。以前的研究认为,拥有丰富资源和首选栖息地的地区吸引了更多的个体,因此导致了更多的接触。为了检验这一假设的准确性,我们使用可用性框架来比较影响佛罗里达州和德克萨斯州(美国)两个研究地区野猪(Sus scrofa)接触地点的景观因素和影响非接触空间使用的景观因素。我们采用了一个接触-资源选择函数(RSF)模型,其中接触位置被定义为使用点,而没有接触的位置被定义为可用点。通过比较这种接触RSF与一般种群水平RSF的输出,我们评估了生境选择和接触的驱动因素。研究发现,景观预测因子(湿地、线性特征和食物资源)在两个研究区野猪接触过程中的栖息地选择中发挥了不同的作用。这表明猪在选择栖息地时与遇到其他个体时与景观的互动是不同的。因此,仅仅依赖于个体或种群水平RSF模型的空间重叠可能会导致对接触相关生态学的误解。我们的研究结果挑战了关于接触的主流假设,并引入了创新的方法来更好地理解空间显性接触的生态驱动因素。通过准确预测接触事件的空间分布,可以加深对基于接触的生态过程及其空间动态的认识。
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Individual-level patterns of resource selection do not predict hotspots of contact.

Contact among animals is crucial for various ecological processes, including social behaviors, disease transmission, and predator-prey interactions. However, the distribution of contact events across time and space is heterogeneous, influenced by environmental factors and biological purposes. Previous studies have assumed that areas with abundant resources and preferred habitats attract more individuals and, therefore, lead to more contact. To examine the accuracy of this assumption, we used a use-available framework to compare landscape factors influencing the location of contacts between wild pigs (Sus scrofa) in two study areas in Florida and Texas (USA) from those influencing non-contact space use. We employed a contact-resource selection function (RSF) model, where contact locations were defined as used points and locations without contact as available points. By comparing outputs from this contact RSF with a general, population-level RSF, we assessed the factors driving both habitat selection and contact. We found that the landscape predictors (e.g., wetland, linear features, and food resources) played different roles in habitat selection from contact processes for wild pigs in both study areas. This indicated that pigs interacted with their landscapes differently when choosing habitats compared to when they encountered other individuals. Consequently, relying solely on the spatial overlap of individual or population-level RSF models may lead to a misleading understanding of contact-related ecology. Our findings challenge prevailing assumptions about contact and introduce innovative approaches to better understand the ecological drivers of spatially explicit contact. By accurately predicting the spatial distribution of contact events, we can enhance our understanding of contact based ecological processes and their spatial dynamics.

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来源期刊
Movement Ecology
Movement Ecology Agricultural and Biological Sciences-Ecology, Evolution, Behavior and Systematics
CiteScore
6.60
自引率
4.90%
发文量
47
审稿时长
23 weeks
期刊介绍: Movement Ecology is an open-access interdisciplinary journal publishing novel insights from empirical and theoretical approaches into the ecology of movement of the whole organism - either animals, plants or microorganisms - as the central theme. We welcome manuscripts on any taxa and any movement phenomena (e.g. foraging, dispersal and seasonal migration) addressing important research questions on the patterns, mechanisms, causes and consequences of organismal movement. Manuscripts will be rigorously peer-reviewed to ensure novelty and high quality.
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