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Ongoing declines of woodland birds: Are restoration plantings making a difference?
Ecological Applications ( IF 4.3 ) Pub Date : 2020-11-25 , DOI: 10.1002/eap.2268
Donna J. Belder 1, 2, 3 , Jennifer C. Pierson 1, 4 , Ashwin C. Rudder 3 , David B. Lindenmayer 1, 2, 5
Affiliation  

Woodland birds are a species assemblage of conservation concern, and their persistence in fragmented agricultural landscapes is dependent on both the preservation of existing woodland remnants and the implementation of restoration plantings. However, little is known about the habitat‐use and persistence of birds in fragmented agricultural landscapes. We present a detailed, population‐oriented study of woodland birds in temperate eucalypt woodland restoration plantings and remnant woodland patches in the South‐west Slopes bioregion of New South Wales, Australia. First, we undertook a 3‐yr mark–recapture project to assess annual survival and site fidelity in restoration plantings and woodland remnants. We supplemented our recapture efforts with resightings of color‐banded individuals. Second, we tracked individual birds of two species, Superb Fairywren (Malurus cyaneus) and Willie Wagtail (Rhipidura leucophrys), and documented snapshots of their home ranges and movement patterns during the breeding season. Annual survival in the woodland bird assemblage was lower than expected (51%). Home ranges of the Superb Fairywren were positively correlated with patch size, and were constrained by patch edges in linear sites. Superb Fairywrens and Willie Wagtails were more likely to travel longer distances between substrates while foraging in linear sites. Willie Wagtails engaged in significant gap‐crossing (up to 400 m) between adjacent habitat patches. Our findings indicate that (1) patch isolation and certain patch configurations place resident birds at an energetic disadvantage, and (2) in our study area, woodland bird populations are continuing to decline. We recommend landscape‐scale habitat restoration programs aim to address ongoing population declines. Studies such as ours conducted over longer time periods would provide a deeper understanding of habitat use and population processes of woodland birds in fragmented agricultural landscapes.

中文翻译:

林地鸟类的数量持续下降:恢复种植是否有所作为?

林地鸟类是一个具有保护意义的物种集合,它们在零散的农业景观中的持久性既取决于对现有林地残余物的保护,也取决于恢复性种植的实施。但是,人们对零散的农业景观中鸟类的栖息地使用和持久性知之甚少。我们对澳大利亚新南威尔士州西南斜坡生物区的温带桉树林地恢复性林木和剩余林地中的林地鸟类进行了详细的,以人口为导向的研究。首先,我们进行了为期3年的标记夺回项目,以评估恢复种植和林地残留物的年生存率和保真度。我们对色带个体的检查补充了我们的重新捕获工作。其次,我们跟踪了两种鸟类蓝藻(Malurus cyaneus)和威利g(Willie Wagtail)(Rhipidura leucophrys)),并记录了繁殖季节它们的繁殖范围和运动方式的快照。林地鸟类种群的年生存率低于预期(51%)。精湛的仙女的原始范围与斑块的大小呈正相关,并受到线性部位斑块边缘的限制。精湛的Fairywrens和Willie Wagtails在线性地点觅食时更可能在基质之间移动更长的距离。Willie Wagtails在相邻生境斑块之间进行了较大的跨界(长达400 m)。我们的研究结果表明(1)斑块隔离和某些斑块配置使居家鸟类处于生机勃勃的劣势,并且(2)在我们的研究区域中,林地鸟类的数量正在持续减少。我们建议进行景观规模的栖息地恢复计划,以解决人口持续减少的问题。
更新日期:2020-11-25
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