Functional space and the population dynamics of birds in agro-ecosystems
Functional space and the population dynamics of birds in agro-ecosystems
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DOI：
10.1016/j.agee.2012.11.001
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发表时间：
2013-01-01
影响因子：
6.6
通讯作者：
Norris, Ken
中科院分区：
文献类型：
--
作者：
Butler, Simon J.;Norris, Ken
管理景观中的资源可用性是生物多样性保护行动的一个关键重点。生物多样性的持续丧失表明，目前的行动是不够的，需要更好地确定目标，以确保提供资源抵消资源赤字。这项研究使用功能覆盖类型的概念，以建立土地利用，资源的可用性和人口动态之间的联系。英国农田鸟类作为一个模型系统，当地的人口动态和功能空间（FS）组成之间的联系，并在修改这些关系的景观背景的作用，进行了探讨。考虑的所有19个物种的人口趋势是更积极或更少的负广场与更大的面积的一个或多个FS组件。与直觉相反的是，人口趋势与金融服务之间的负面关系也很常见。周围景观中的同种丰度也被确定为种群动态的重要驱动力，无论是直接还是通过其对与每个FS组件的关系的影响。有针对性的保护管理是必要的，以解决当地人口变化的非常具体的性质。(C)2012爱思唯尔有限公司版权所有。
Managing resource availability in landscapes is a key focus of biodiversity conservation action. Continued biodiversity losses suggest that current actions are inadequate, with better targeting required to ensure resource provision offsets resource deficits. This study uses the concept of functional cover types to establish links between land-use, resource availability and population dynamics. Using UK farmland birds as a model system, the links between local population dynamics and functional space (FS) composition, and the role of landscape context in modifying these relationships, are explored. The population trends of all 19 species considered were more positive or less negative in squares with greater areas of one or more FS components. Counter-intuitively, negative relationships between population trends and FS were also common. Conspecific abundance in the surrounding landscape was also identified as being an important driver of population dynamics, both directly and through its influence on the relationship with each FS component. Targeted conservation management is needed to address the very context-specific nature of local population change. (C) 2012 Elsevier B.V. All rights reserved.