Archer Larned, Brian Rolek, Keota Silaphone, Shane Pruett, Reed Bowman, Bernard Lohr
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引用次数: 0
摘要
监测种群数量对于了解栖息地的利用是至关重要的,特别是对于濒危物种,对于确定土地管理战略的有效性也很重要。佛罗里达蚱蜢麻雀(Ammodramus savannarum floridanus)是一种极度濒危的非迁徙草原鸟类,自20世纪90年代以来一直受到监测。它主要居住在干燥的草原栖息地,由频繁(2-3年)规定的火灾管理。监测因迁徙和越冬的东部蚱蜢麻雀(A. s. pratensis)的存在而混乱,它们具有声音和形态上的相似性。这些相似之处可能导致对土地管理的错误分类和错误结论。我们的目标是确定火灾对佛罗里达蚱蜢麻雀栖息地使用的影响,在两个空间尺度上,100米和400米缓冲区周围的点计数位置,同时控制东部蚱蜢麻雀的存在。我们将点数数据(1996-2011)、外部数据源(eBird)和贝叶斯动态占用模型(考虑错误分类)结合起来,评估了对规定火灾的栖息地利用和动态响应。错误分类佛罗里达蚱蜢麻雀的概率在4月份达到顶峰,然后在5月1日之后下降到接近零。点计数站持续存在的概率随着火灾年数(400 m缓冲区内最大像素)的增加而降低,并且在最近的烧伤(< 1年)中最大。最近一次烧伤的季节性(即100米缓冲区内像素点的烧伤顺序日期)也影响了持续的概率,佛罗里达蚱蜢麻雀在1月和7月发生烧伤时的持续时间高于平均水平,在4月初达到峰值。在火灾发生大约两个月后,殖民的可能性达到顶峰,然后迅速下降到可以忽略不计的值。这是第一项长期研究,旨在检查处方烧伤对佛罗里达蚱蜢麻雀占用的影响,这说明了东部蚱蜢麻雀的存在。这种建模框架也可以为在调查中难以区分的其他物种和亚种提供实用工具。
期刊介绍:
Avian Conservation and Ecology is an open-access, fully electronic scientific journal, sponsored by the Society of Canadian Ornithologists and Birds Canada. We publish papers that are scientifically rigorous and relevant to the bird conservation community in a cost-effective electronic approach that makes them freely available to scientists and the public in real-time. ACE is a fully indexed ISSN journal that welcomes contributions from scientists all over the world.
While the name of the journal implies a publication niche of conservation AND ecology, we think the theme of conservation THROUGH ecology provides a better sense of our purpose. As such, we are particularly interested in contributions that use a scientifically sound and rigorous approach to the achievement of avian conservation as revealed through insights into ecological principles and processes. Papers are expected to fall along a continuum of pure conservation and management at one end to more pure ecology at the other but our emphasis will be on those contributions with direct relevance to conservation objectives.