Comparative demographics of a Hawaiian forest bird community

Estimates of demographic parameters such as survival and reproductive success are critical for guiding management efforts focused on species of conservation concern. Unfortunately, reliable demographic parameters are difficult to obtain for any species, but especially for rare or endangered species. Here we derived estimates of adult survival and recruitment in a community of Hawaiian forest birds, including eight native species (of which three are endangered) and two introduced species at Hakalau Forest National Wildlife Refuge, Hawaiʻi. Integrated population models (IPM) were used to link mark–recapture data (1994–1999) with long-term population surveys (1987–2008). To our knowledge, this is the first time that IPM have been used to characterize demographic parameters of a whole avian community, and provides important insights into the life history strategies of the community. The demographic data were used to test two hypotheses: 1) arthropod specialists, such as the ‘Akiapōlā‘au Hem...

种群统计参数（demographic parameters）（如存活率和繁殖成功率）的估算，对于指导针对需重点保护物种的管理工作至关重要。不幸的是，可靠的种群统计参数对任何物种而言都难以获取，尤其是珍稀或濒危物种。本研究在夏威夷哈卡拉乌森林国家野生动物保护区，对夏威夷森林鸟类群落的成鸟存活率和补充量（recruitment）进行了估算，该群落包括8种本地物种（其中3种濒危）和2种引入物种。综合种群模型（Integrated Population Models, IPM）被用于将标记重捕数据（1994–1999年）与长期种群调查数据（1987–2008年）相联系。据我们所知，这是首次运用IPM刻画整个鸟类群落的种群统计参数，且为理解该群落的生活史策略提供了重要见解。这些种群统计数据被用于检验两个假设：1）节肢动物专食性鸟类（如‘Akiapōlā‘au Hem...