Dagtekin Dilsad, Ertürk Alper, Sommer Stefan, Ozgul Arpat, Soyumert Anil
Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
Hunting and Wildlife Program, Araç Rafet Vergili Vocational School of Higher Education, Kastamonu University, TR-37800, Arac, Kastamonu, Turkey.
J Mammal. 2023 Nov 24;105(1):122-133. doi: 10.1093/jmammal/gyad107. eCollection 2024 Feb.
Large mammals in temperate climates typically display seasonal patterns of habitat use. However, these patterns are often overlooked because large mammals are usually surveyed at annual intervals. In addition, most studies focus on a single species and ignore other species with which the focal species could interact. Knowing seasonal patterns of habitat use in multiple species and understanding factors that cause these patterns can provide further detail on population dynamics and guide effective conservation planning. Here, using dynamic occupancy modeling, we analyze 11 years of camera-trap data collected in northwestern Anatolia, Turkey, to investigate seasonal habitat use of 8 large-mammal species: Brown Bear (), Eurasian Lynx (), Gray Wolf (), Red Fox (), Wild Boar (), Roe Deer (), European Hare (), and Red Deer (). For each species, we study the strength of seasonality in habitat use and its dependence on human population density and elevation, which have been shown to affect distributions of species in the region. Although all species exhibited seasonality in habitat use, the strength of this seasonality varied among species; it was strongest in Wild Boar, Roe Deer, and Brown Bear. Moreover, except for Brown Bear, all species tended to avoid sites close to humans. The species responded differently to changing elevation; increasing elevation had both positive and negative effects on species-specific colonization and desertion probabilities, and these effects were likely related to either feeding habits or tendency to avoid humans. These results indicate that seasonality should be taken into consideration in population studies. However, because species differ, seasonality patterns should be identified separately for each species of interest, as differences in these patterns can explain the underlying dynamics of habitat-use patterns more accurately.
温带气候中的大型哺乳动物通常表现出季节性的栖息地利用模式。然而,这些模式常常被忽视,因为对大型哺乳动物的调查通常是每年进行一次。此外,大多数研究只关注单一物种,而忽略了与目标物种可能相互作用的其他物种。了解多个物种的季节性栖息地利用模式,并理解导致这些模式的因素,可以为种群动态提供更详细的信息,并指导有效的保护规划。在这里,我们使用动态占用模型,分析了在土耳其安纳托利亚西北部收集的11年相机陷阱数据,以调查8种大型哺乳动物的季节性栖息地利用情况:棕熊( )、欧亚猞猁( )、灰狼( )、赤狐( )、野猪( )、狍( )、欧洲野兔( )和马鹿( )。对于每个物种,我们研究了栖息地利用季节性的强度及其对人口密度和海拔的依赖性,这些因素已被证明会影响该地区物种的分布。尽管所有物种在栖息地利用上都表现出季节性,但这种季节性的强度在不同物种之间有所不同;在野猪、狍和棕熊中最为明显。此外,除了棕熊之外,所有物种都倾向于避开靠近人类的地点。不同物种对海拔变化的反应不同;海拔升高对特定物种的定居和弃用概率既有积极影响也有消极影响,这些影响可能与饮食习惯或避开人类的倾向有关。这些结果表明,在种群研究中应考虑季节性。然而,由于物种不同,应针对每个感兴趣的物种分别确定季节性模式,因为这些模式的差异可以更准确地解释栖息地利用模式的潜在动态。