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Habitat selection by invaders: Avoiding natural habitats by the red-whiskered bulbul Pycnonotus jocosus
Ecological Research ( IF 2 ) Pub Date : 2023-10-21 , DOI: 10.1111/1440-1703.12427
Edgar Bernat‐Ponce 1 , Laura Domínguez‐Pérez 2 , José A. Gil‐Delgado 2
Affiliation  

Invasive species are significant drivers of global change due to their ecological impact, as well as the economic costs associated with managing them. While habitat selection studies have been an essential tool for managing endangered species, they have not been widely used for invasive species. A prime example of an invasive species is the red-whiskered bulbul, which has spread to several parts of the world from Asia. This study focused on macrohabitat selection analysis during the winter of 2019–2020, with 200 point counts conducted over 784 km2 to identify habitats that are selected and avoided by the invader species in eastern Spain. In addition, the study analyzed 18 variables related to microhabitat, vegetation, and anthropogenic factors to determine those that are relevant for its abundance in the selected areas (74 point counts over 784 km2). The study found that the red-whiskered bulbul was not detected in natural Mediterranean vegetation such as forests and shrubs or crops, even though they were the dominant ecosystems, accounting for 52.8% of the study area. Instead, suburban areas were selected, and the species was more abundant near its initial release point and in areas with orchards containing fruit trees and plants. Therefore, the study suggests that natural Mediterranean habitats and crops may act as ecological barriers to the expansion of this species, while suburban areas would increase their ability to expand. The study's findings should be considered in managing the red-whiskered bulbul in Mediterranean areas.

中文翻译:

入侵者的栖息地选择:红须鹎Pycnonotus jocosus避开自然栖息地

入侵物种因其生态影响以及与管理它们相关的经济成本而成为全球变化的重要驱动因素。虽然栖息地选择研究一直是管理濒危物种的重要工具,但它们尚未广泛用于入侵物种。入侵物种的一个典型例子是红须鹎,它已从亚洲传播到世界多个地区。这项研究的重点是2019-2020年冬季的宏观栖息地选择分析,在784 km 2范围内进行了200个点计数,以确定西班牙东部入侵物种选择和避开的栖息地。此外,该研究还分析了与微生境、植被和人为因素相关的 18 个变量,以确定与其在选定区域(超过 784 km 2的 74 个点计数)丰度相关的变量。研究发现,在森林、灌木或农作物等地中海自然植被中,并未发现红须鹎,尽管它们是占研究面积52.8%的主要生态系统。相反,选择了郊区,该物种在其初始释放点附近以及果园内含有果树和植物的地区更为丰富。因此,该研究表明,地中海自然栖息地和农作物可能会成为该物种扩张的生态障碍,而郊区会增加其扩张能力。在管理地中海地区的红须鹎时应考虑该研究的结果。
更新日期:2023-10-21
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