影响快速衰落的滨鸟欧亚鸻巢址选择的因素

IF 1.8 3区 生物学 Q1 ORNITHOLOGY
Eleanor Marie Rivers, Mike J. Short, Andy Page, Peter M. Potts, Kathy Hodder, Andrew Hoodless, Rob Robinson, Richard Stillman
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引用次数: 0

摘要

在这个人类引起的环境快速变化的时期,了解生境对濒危物种分布和生产力的影响至关重要。在欧洲,地面筑巢的鸟类数量减少的速度比其他任何鸟类都要快,体型较大的鸟类面临着最大的灭绝风险。生产力和成虫存活率不能同时最大化,个体将在筑巢阶段做出有利于这一结果或另一结果的决定;然而,在加速变化的条件下,这些决策过程可能与积极的适应度结果脱钩。欧亚鸻是欧洲最大的鸻,其繁殖能力正在急剧下降。众所周知,Curlews使用各种各样的栖息地筑巢,在那里人为或自然特征可能会影响分布。目前迫切需要了解这些影响的空间尺度,以及栖息地特征对巢穴生存的影响是积极的还是消极的。在我们英格兰南部的研究地点,杓鹬明显倾向于在潮湿的栖息地筑巢,主要是沼泽,而对干燥的石楠地的选择较弱。在潮湿的生境中,巢存活率提高,巢址周围的沼泽面积与筑巢成功率的提高呈正相关,而灌木丛面积与筑巢成功率的提高呈正相关。林地显著地将杓鹬排除在潜在的适宜繁殖栖息地之外,在距离巢地2公里处观察到影响,但巢的存活率并没有随着距离林地的距离而提高。Curlews强烈避免在经过研究地点的主要道路附近筑巢,尽管附近似乎是合适的栖息地。了解景观的影响将有助于规划未来的杓鹬生境管理、林业的影响以及避免对高度保育的物种造成额外的压力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Factors influencing nest site selection in a rapidly declining shorebird, the Eurasian curlew

Factors influencing nest site selection in a rapidly declining shorebird, the Eurasian curlew

Factors influencing nest site selection in a rapidly declining shorebird, the Eurasian curlew

Factors influencing nest site selection in a rapidly declining shorebird, the Eurasian curlew

In this period of rapid human-induced environmental change, it is vital that influences of habitat on the distribution and productivity of threatened species are understood. Ground-nesting birds are declining more rapidly across Europe than any other group, with large-bodied birds at the greatest risk of extinction. Productivity and adult survival cannot both be maximised concurrently, and individuals will make decisions during the nest-placement phase which will favour one outcome or the other; however, under conditions of accelerating change, these decision processes may become decoupled from positive fitness outcomes. The Eurasian curlew Numenius arquata is Europe's largest wader and is showing steep declines in breeding productivity. Curlews are known to use a diverse range of habitats for nesting, where anthropogenic or natural features may influence distribution. There is an urgent need to understand the spatial scales of these impacts, and whether habitat characteristics have a positive or negative impact on nest survival. In our study site in southern England, curlew showed a marked preference for nesting in wetter habitats, primarily mire, and a weaker selection of dry heathland. Nest survival improved in wetter habitats, and the area of mire round a nest site was positively associated with increased levels of nesting success, whilst area of scrub had a negative association. Woodland significantly excluded curlew from potentially suitable breeding habitat, with an impact observed up to 2 km from the nest site, but nest survival did not improve with distance from woodland. Curlews strongly avoided nesting near a major road passing through the study site, despite seemingly suitable habitat nearby. Understanding landscape effects will assist in planning future habitat management for curlew, impacts of forestry and avoidance of additional pressures on a species of high conservation concern.

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来源期刊
Journal of Avian Biology
Journal of Avian Biology 生物-鸟类学
CiteScore
3.70
自引率
0.00%
发文量
56
审稿时长
3 months
期刊介绍: Journal of Avian Biology publishes empirical and theoretical research in all areas of ornithology, with an emphasis on behavioural ecology, evolution and conservation.
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