Trait-dependent response of dung beetle populations to tropical forest conversion at local and regional scales.
Trait-dependent response of dung beetle populations to tropical forest conversion at local and regional scales.
复制标题
粪甲虫种群对当地和区域尺度热带森林转变的性状依赖性反应。
DOI：
10.1890/12-0251.1
复制
发表时间：
2013
期刊：
影响因子：
4.8
通讯作者：
S. Spector
中科院分区：
文献类型：
--
作者：
Elizabeth S Nichols;M. Uriarte;D. Bunker;M. Favila;E. Slade;K. Vulinec;T. Larsen;F. Vaz;J. Louzada;S. Naeem;S. Spector
将物种特征、环境变化和生物体反应的信息联系起来的比较分析很少发现明确的特征与脆弱性相关。我们测试了物种特征是否可以预测在两个生物地理区域(新热带和非洲-欧亚热带)内和跨两个生物地理区域(新热带和非洲-欧亚热带)对三种水平的森林转化强度做出的局部范围的粪甲虫种群反应。我们结合了生物多样性调查、全球分子系统学和关于三个物种特征的信息，假设这些特征会影响对森林转换的脆弱性，以检查(1)跨地区甲虫种群反应的一致性，(2)物种特征是否可以预测这种反应，以及(3)特征-反应关系的跨地区一致性。在任何程度的森林转换之后，大多数甲虫数量都会下降；新热带物种的下降幅度最大。性状与种群趋势之间的关系受当地和生物地理环境的影响很大。我们讨论了物种特征解释种群趋势的能力，并提出了几种加强特征-反应模型的方法。
Comparative analyses that link information on species' traits, environmental change, and organism response have rarely identified unambiguous trait correlates of vulnerability. We tested if species' traits could predict local-scale changes in dung beetle population response to three levels of forest conversion intensity within and across two biogeographic regions (the Neotropics and Afro-Eurasian tropics). We combined biodiversity surveys, a global molecular phylogeny, and information on three species' traits hypothesized to influence vulnerability to forest conversion to examine (1) the consistency of beetle population response across regions, (2) if species' traits could predict this response, and (3) the cross-regional consistency of trait-response relationships. Most beetle populations declined following any degree of forest conversion; these declines were strongest for Neotropical species. The relationship between traits and population trend was greatly influenced by local and biogeographic context. We discuss the ability of species' traits to explain population trends and suggest several ways to strengthen trait-response models.