Multi-Factor Analysis of Avian Life History from a Unique Long-Term Data Base

从独特的长期数据库对鸟类生活史进行多因素分析

• 批准号: 9974077
• 负责人: Peter Blums
• 金额: $ 12.72万
• 依托单位: University of Missouri-Columbia
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-11-01 至 2002-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9974077&HistoricalAwards=false
• 关键词: Multi; Factor; Analysis; Avian; Life

Blums9974077The success of many bird conservation initiatives depends critically on the number of young that survive and return to breed in areas where they were raised, yet remarkably few studies have been able to evaluate these processes thoroughly. However, a recent long-term effort to individually mark day-old ducklings and their mothers coupled with a program to find and locate these birds later in life has produced unique reproductive and survival data for three species of ducks. Therefore, the principal goal of this study is to estimate survival and return rates of ducks, and explore reasons why they vary so much, by exploiting one of the largest data sets ever assembled for free-living birds. Advanced statistical procedures provide an opportunity to analyze these data and, more importantly, to identify factors that determine whether a population declines, remains stable, or increases. Results about factors influencing breeding success and recruitment of birds have important implications for private, state and national wetland management policies and programs. The large financial investment in wetland programs requires strategies that result in positive population responses and viable populations. Furthermore, these findings may have practical management implications for adjusting the timing, length, and bag limits associated with hunting seasons for different population levels of harvested migratory waterfowl.

[blums9974077]许多鸟类保护计划的成功与否，关键取决于幼鸟存活下来并返回它们生长的地区繁殖的数量，然而，能够彻底评估这些过程的研究却非常少。然而，最近一项对雏鸭及其母亲进行单独标记的长期努力，加上一项寻找和定位这些雏鸭的计划，为三种鸭子提供了独特的繁殖和生存数据。因此，本研究的主要目标是通过利用迄今为止最大的自由生活鸟类数据集之一，估计鸭子的存活率和返回率，并探索它们差异如此之大的原因。先进的统计程序为分析这些数据提供了机会，更重要的是，可以确定决定种群数量是下降、保持稳定还是增加的因素。研究结果对私人、国家和国家湿地管理政策和规划具有重要的指导意义。湿地项目的大量财政投资需要能够产生积极的种群响应和可生存种群的策略。此外，这些发现可能对调整不同种群水平的迁徙水禽的狩猎季节相关的时间、长度和袋限具有实际的管理意义。