Population estimates for tidal marsh birds of high conservation concern in the northeastern USA from a design-based survey
Population estimates for tidal marsh birds of high conservation concern in the northeastern USA from a design-based survey
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根据基于设计的调查对美国东北部高度保护关注的潮汐沼泽鸟类的数量进行估计
DOI：
10.1650/condor-15-30.1
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
W. G. Shriver
中科院分区：
文献类型：
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作者：
Whitney A. Wiest;M. Correll;Brian J. Olsen;C. Elphick;T. Hodgman;David R. Curson;W. G. Shriver
人为环境影响和气候变化（尤其是海平面上升）导致的潮沼损失已经并将继续导致潮沼鸟类数量下降。潮汐沼泽鸟类的分布模式是众所周知的，但我们缺乏对当地丰度和区域种群规模的详细了解，这限制了我们制定有效的保护策略以减轻沼泽损失的影响的能力。我们设计并实施了一个概率抽样框架，建立了一个区域沼泽鸟类监测项目，并收集了美国东北部（缅因州至弗吉尼亚州）潮汐沼泽鸟类繁殖的基线信息。我们在2011-2012年对1780个地点进行了采样，以提供5种潮汐沼泽专业鸟类的区域种群估计。我们估计在东北潮汐沼泽地区有151,000只鹬（Rallus crepitans, 95% CI = 90,000-212,000）， 117,000只鹬（Tringa semipalmata, 95% CI = 88,000-146,000）， 5,000只Nelson's Sparrows (Ammodramus nelsoni, 95% CI = 1,000-9,000), 53,000只盐沼麻雀（A. caudacutus, 95% CI = 37,000-69,000）和230,000只海滨麻雀（A. maritimus, 95% CI = 174,000-286,000）。我们的基线评估可以用来确定对每个物种的区域种群重要的当地栖息地斑块，并在目标区域优先考虑保护行动，以最大限度地提高潮汐沼泽鸟类的持久性。我们的采样框架的灵活性和概率设计也允许与其他监测计划（例如，美国鱼类和野生动物管理局盐沼完整性计划和国家公园管理局生命体征监测计划）相结合，以便可以在多个空间尺度上对这些物种进行推断。
ABSTRACT Tidal marsh loss to anthropogenic environmental impacts and climate change, particularly sea level rise, has and will continue to cause declines in tidal marsh bird populations. Distribution patterns of tidal marsh birds are generally known, yet we lack detailed knowledge of local abundance and regional population sizes, which limits our ability to develop effective conservation strategies that will mitigate the impacts of marsh loss. We designed and implemented a probabilistic sampling framework to establish a regional marsh bird monitoring program, and collected baseline information for breeding tidal marsh birds in the northeastern USA (Maine to Virginia). We sampled 1,780 locations in 2011–2012 to provide regional population estimates for 5 tidal marsh–specialist birds. We estimated that there were 151,000 Clapper Rails (Rallus crepitans; 95% CI = 90,000–212,000), 117,000 Willets (Tringa semipalmata; 95% CI = 88,000–146,000), 5,000 Nelson's Sparrows (Ammodramus nelsoni; 95% CI = 1,000–9,000), 53,000 Saltmarsh Sparrows (A. caudacutus; 95% CI = 37,000–69,000), and 230,000 Seaside Sparrows (A. maritimus; 95% CI = 174,000–286,000) in northeastern tidal marshes. Our baseline assessment can be used to identify local habitat patches important to regional populations for each species and to prioritize conservation actions in targeted areas to maximize tidal marsh bird persistence. The flexibility and probabilistic design of our sampling framework also allow for integration with other monitoring programs (e.g., the U.S. Fish and Wildlife Service Salt Marsh Integrity Program and National Park Service Vital Signs Monitoring Program) so that inferences for these species can be made at multiple spatial scales.