巢内捕食者活动时间的纬度差异与栖息地有关

IF 6.3 1区 环境科学与生态学 Q1 ECOLOGY
Léna de Framond, Clinton D. Francis, Mihai Valcu, Henrik Brumm
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引用次数: 0

摘要

这项工作的目的是研究鸟类巢穴捕食者群落是否会随着纬度的变化而从夜间捕食者群落转变为昼间捕食者群落。这一假设是在 70 年前提出的,理由是高纬度地区鸟类繁殖季节的昼长增加了视觉捕食者的机会。根据其他研究对鸟巢捕食者身份的调查,我们还考虑了栖息地和鸟巢高度的变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Latitudinal Variation in the Timing of Nest Predator Activity Is Habitat Specific

Latitudinal Variation in the Timing of Nest Predator Activity Is Habitat Specific

Aim

The goal of this work was to investigate whether the community of avian nest predators shifts from nocturnal to diurnal with changes in latitude. This hypothesis was formulated 70 years ago, under the rationale that longer day length during the bird breeding season at high latitudes increases opportunities for visual predators. Based on other studies investigating the identity of nest predators, we also considered variation in the habitat and nest height.

Location

Global.

Time Period

1994–2020.

Major Taxa Studied

Birds and their nest predators.

Methods

We reviewed studies that report the results of nest monitoring by video or photograph camera and collected data on the identity of nest predators. We then used the activity pattern of the predator species as a proxy to estimate whether predation events were nocturnal or diurnal. We used multivariate logistic and ordinal regressions to investigate whether the probability that nest predators are nocturnal changes with latitude and habitat.

Results

We found that both habitat and latitude explain variation in the circadian type of nest predators. In open habitats, nest predation was more often due to diurnal predators at high latitudes and nocturnal predators near the equator. In forests, on the other hand, nocturnal predator activity patterns were more common closer to the poles.

Main Conclusions

Using meta-analytical methods, we show that predator activity varies across habitats and latitude leading to markedly different consequences of predation for prey. These findings suggest that small-scale environmental factors such as habitat type can strongly affect and even neutralise larger-scale, ecological patterns. We speculate that day length might act along with other biotic and abiotic factors to shape the timing of nest predation in birds.

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来源期刊
Global Ecology and Biogeography
Global Ecology and Biogeography 环境科学-生态学
CiteScore
12.10
自引率
3.10%
发文量
170
审稿时长
3 months
期刊介绍: Global Ecology and Biogeography (GEB) welcomes papers that investigate broad-scale (in space, time and/or taxonomy), general patterns in the organization of ecological systems and assemblages, and the processes that underlie them. In particular, GEB welcomes studies that use macroecological methods, comparative analyses, meta-analyses, reviews, spatial analyses and modelling to arrive at general, conceptual conclusions. Studies in GEB need not be global in spatial extent, but the conclusions and implications of the study must be relevant to ecologists and biogeographers globally, rather than being limited to local areas, or specific taxa. Similarly, GEB is not limited to spatial studies; we are equally interested in the general patterns of nature through time, among taxa (e.g., body sizes, dispersal abilities), through the course of evolution, etc. Further, GEB welcomes papers that investigate general impacts of human activities on ecological systems in accordance with the above criteria.
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