鸟类群落在不同时期的稳定性和定点调查的可靠性

IF 1.6 4区 环境科学与生态学 Q3 ECOLOGY
Austral Ecology Pub Date : 2024-04-11 DOI:10.1111/aec.13516
Julian Reid, Rhiannon Smith, Laura Scott, Nick Reid
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引用次数: 0

摘要

在 1 年或更短时间内进行的 "快照 "调查被广泛用于描述鸟类群落的组成。马龙等人(《澳大利亚生态学》,2005 年,30, 383)在对维多利亚州西部的 26 个地点进行重复鸟类调查后,对快照调查的实用性以及由此得出的结论提出了质疑。他们得出的结论是:"大多数物种的分布情况与物种在不同地点随机重新分布时的预期情况差别不大"。在这两年记录的 54 个物种中,只有 5 个物种在调查期间的分布变化明显小于预期。我们怀疑这是否是澳大利亚林地栖息地陆鸟群落的特例而非惯例,原因有三:(1)传鸟类在这些群落中占主导地位,一旦建立了繁殖领地,它们往往会忠实于一个地点;(2)大多数陆鸟物种是定居或迁徙性的,而不是游牧性的;(3)大多数澳大利亚传鸟类寿命较长,因此在十年时间框架内进行的调查可能会对相同的个体进行采样。我们在首次调查 7 年后,对新南威尔士州北部纳莫伊山谷两种植被类型的 29 个地点进行了重复调查,从而检验了鸟类群落组成的稳定性。在我们的研究中,鸟类群落组成在两次调查之间呈现出较高的更替水平,但在两次调查期间出现的 62 个物种中,有 21 个物种在第二次调查期间出现在相同地点的可能性明显高于第一次调查期间,而且大多数物种倾向于忠实于调查地点。曼特尔检验(Mantel tests)表明,同一地点的物种组成比预期的更为相似。在对林地栖息地的澳大利亚陆禽群落进行长期监测时,物种间适度的地点忠实性和地点间显著的群落组成恒定性应是预期目标,除非发生重大地貌变化和极端气候干扰。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

The stability of bird assemblages across time and the reliability of snapshot surveys

The stability of bird assemblages across time and the reliability of snapshot surveys

‘Snapshot’ surveys conducted over 1 year or less are widely used to describe avian community composition. Maron et al. (Austral Ecology, 2005, 30, 383) questioned the utility of snapshot surveys and the conclusions drawn from them following repeat bird surveys at 26 sites in western Victoria, 7 years after initial surveys. They concluded, ‘the distribution of most species did not differ significantly from that expected if species had redistributed at random among sites’. Only five of 54 species recorded in both years had distributions that changed significantly less than expected among sites between the survey periods. We question whether this is the exception rather than the rule for Australian landbird communities in wooded habitats for three reasons: (1) passerine species dominate these communities and tend to remain faithful to a site once a breeding territory has been established; (2) most landbird species are sedentary or migratory, not nomadic; and (3) most Australian passerines are long-lived, so surveys conducted within decadal timeframes may sample the same individuals. We examined the constancy of bird community composition by conducting repeat surveys at 29 sites in two vegetation types in the Namoi Valley, northern New South Wales, 7 years after the first survey. Bird assemblage composition in our study exhibited high levels of turnover between surveys, but 21 of 62 species present in both survey periods were significantly more likely to be found at the same sites in the second period as the first, and the tendency of most species was of site fidelity. Mantel tests demonstrated that assemblage composition at the same sites was more similar than expected by chance. Moderate levels of site fidelity among species and significant levels of assemblage composition constancy among sites should be the expectation when monitoring Australian landbird communities in wooded habitats over extended timeframes, except in the cases of major landscape transformation and extreme climatic disruptions.

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来源期刊
Austral Ecology
Austral Ecology 环境科学-生态学
CiteScore
2.90
自引率
6.70%
发文量
117
审稿时长
12-24 weeks
期刊介绍: Austral Ecology is the premier journal for basic and applied ecology in the Southern Hemisphere. As the official Journal of The Ecological Society of Australia (ESA), Austral Ecology addresses the commonality between ecosystems in Australia and many parts of southern Africa, South America, New Zealand and Oceania. For example many species in the unique biotas of these regions share common Gondwana ancestors. ESA''s aim is to publish innovative research to encourage the sharing of information and experiences that enrich the understanding of the ecology of the Southern Hemisphere. Austral Ecology involves an editorial board with representatives from Australia, South Africa, New Zealand, Brazil and Argentina. These representatives provide expert opinions, access to qualified reviewers and act as a focus for attracting a wide range of contributions from countries across the region. Austral Ecology publishes original papers describing experimental, observational or theoretical studies on terrestrial, marine or freshwater systems, which are considered without taxonomic bias. Special thematic issues are published regularly, including symposia on the ecology of estuaries and soft sediment habitats, freshwater systems and coral reef fish.
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