受威胁的Campo Miner Geositta poeciloptera的运动生态学及其对热带开放草原鸟类保护的意义

IF 1.5 4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION
L. Lopes, Ricardo C. de Meireles, H. Peixoto, J. P. Teixeira, T. L. D. S. S. Machado, V. Lombardi
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引用次数: 2

摘要

了解濒危物种表现出的运动类型对于制定保护和管理策略至关重要。Campo Miner (Geositta poeciloptera)是南美洲塞拉多特有的一种受威胁的专性草原鸟类。文学对它的运动生态持不同意见,作者提出了像居住和游牧一样矛盾的策略。该物种需要短而稀疏的草地覆盖来繁殖,似乎与火灾有关,追踪最近被烧毁的草地斑块。我们花了七年的时间研究坎波矿工的运动生态学,将我们的结果与公民科学数据、博物馆标本和文献资料相结合。在调查了鸟类种群所表现出的每一种主要迁徙策略后,我们没有发现该物种有规律迁徙的证据(如纵向、短途或长途)。Campo Miner是一种常驻物种,其领土行为仅限于繁殖季节,这显然导致了其可探测性的季节性变化,使我们对其季节性丰度和分布的看法产生偏差。我们提出了一个理解该物种局部运动的理论框架,该框架预测坎波矿工:(1)在繁殖季节开始时在合适的栖息地斑块上建立自己的领土;(二)繁殖季节过后不再保卫领地;(3)在非繁殖期停留在自己的活动范围内,并在邻近的活动范围内游荡;(4)如果草覆盖变得高而密,或者当有质量更好的栖息地时,放弃它们的活动范围,用火作为定位最近被烧毁的斑块的线索
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Movement ecology of the threatened Campo Miner Geositta poeciloptera and its implications for the conservation of tropical open grassland birds
Summary Understanding the types of movements exhibited by a threatened species is paramount for creating conservation and management strategies. The Campo Miner (Geositta poeciloptera) is a threatened obligate grassland bird endemic to the South American Cerrado. Literature disagrees about its movement ecology, with authors suggesting strategies as contradictory as residency and nomadism. The species requires short and sparse grass cover to breed and seems to be associated with fires, tracking recently burned grassland patches. We studied the movement ecology of marked Campo Miners for seven years, integrating our results with information from citizen science data, museum specimens, and the literature. After investigating every main movement strategy exhibited by bird populations, we found no evidence of regular migration in the species (e.g. altitudinal, short- or long-distance). The Campo Miner is a resident species with territorial behaviour restricted to the breeding season, which apparently results in seasonal variation in its detectability, biasing our perception about its seasonal abundance and distribution. We propose a theoretical framework for understanding local movements in the species, which predicts that Campo Miners: (1) establish their territories at the beginning of the breeding season in patches of suitable habitat; (2) stop defending their territories after the breeding season; (3) stay during the non-breeding season in their home ranges, also wandering across neighbouring home ranges; (4) abandon their home ranges if the grass cover becomes high and dense or when a better quality habitat patch becomes available, using fires as a cue for locating recently burned patches that will soon
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来源期刊
CiteScore
3.40
自引率
6.20%
发文量
50
审稿时长
>12 weeks
期刊介绍: Bird Conservation International is a quarterly peer-reviewed journal that seeks to promote worldwide research and action for the conservation of birds and the habitats upon which they depend. The official journal of BirdLife International, it provides stimulating, international and up-to-date coverage of a broad range of conservation topics, using birds to illuminate wider issues of biodiversity, conservation and sustainable resource use. It publishes original papers and reviews, including targeted articles and recommendations by leading experts.
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