How to count bird calls? Vocal activity indices may provide different insights into bird abundance and behaviour depending on species traits

IF 6.3 2区 环境科学与生态学 Q1 ECOLOGY
Anja Hutschenreiter, Ellen Andresen, Margarita Briseño-Jaramillo, Alejandra Torres-Araneda, Eduardo Pinel-Ramos, Jacqueline Baier, Filippo Aureli
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引用次数: 0

Abstract

Abstract Image

如何计算鸟类的叫声?声音活动指数可根据物种特征提供有关鸟类丰度和行为的不同见解
被动声学监测(PAM)已成为调查鸟类的重要工具,对从 PAM 记录中获取鸟类数量和行为信息的方法的需求也在不断增长。鸟类种群的变化是通过计算记录的鸟叫声和发声活动率(VAR,即每次记录时间内的鸟叫声数量)来评估的。然而,鸟类鸣叫的计数方式多种多样,而且根据不同的物种特征,这些鸣叫计数可以让我们对鸟类的数量、发声行为和/或栖息地使用情况有不同的了解。我们的研究有两个目标(1)提出并评估两个基于鸣叫计数的新指数,即检测率(DR,即检测到目标发声存在的 1 分钟记录数)和每分钟最大计数(MAX,即 1 分钟记录中发现的最大鸣叫数);以及(2)提出一个概念框架,说明对 VAR、DR 和 MAX 的解释如何取决于指数和物种特征。对于具有不同特征的三种新热带鸟类,我们根据尤卡坦半岛(墨西哥)25 个地点的 PAM 数据计算了 VAR、DR 和 MAX,这些地点的人为生境干扰程度各不相同。我们发现这些指数之间存在中度到高度的相关性,与 DR 和 MAX 相比,VAR 的时间变异性更高。我们还发现,生境干扰对三种物种和指数的影响大小不同。我们认为,对于鸣叫行为具有高提示率的物种来说,DR可能是比VAR更可靠的相对丰度指数,而MAX可能适用于估计群居鸟类的家族或鸟群规模。我们的研究结果表明,基于叫声计数开发新的指数对于提出生态假设和评估鸟类丰度与行为的变化具有潜在的实用性。
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来源期刊
CiteScore
11.60
自引率
3.00%
发文量
236
审稿时长
4-8 weeks
期刊介绍: A British Ecological Society journal, Methods in Ecology and Evolution (MEE) promotes the development of new methods in ecology and evolution, and facilitates their dissemination and uptake by the research community. MEE brings together papers from previously disparate sub-disciplines to provide a single forum for tracking methodological developments in all areas. MEE publishes methodological papers in any area of ecology and evolution, including: -Phylogenetic analysis -Statistical methods -Conservation & management -Theoretical methods -Practical methods, including lab and field -This list is not exhaustive, and we welcome enquiries about possible submissions. Methods are defined in the widest terms and may be analytical, practical or conceptual. A primary aim of the journal is to maximise the uptake of techniques by the community. We recognise that a major stumbling block in the uptake and application of new methods is the accessibility of methods. For example, users may need computer code, example applications or demonstrations of methods.
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