阿古拉斯长嘴云雀的繁殖生态学:一种依赖于南非西开普省残余的雷诺斯特费尔德的特有鸟类

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2023-11-17 DOI:10.1007/s10336-023-02123-2
Sanjo Rose, Robert Leslie Thomson, Alan Tristam Kenneth Lee, Peter Geoffrey Ryan
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引用次数: 0

摘要

阿古拉斯长嘴云雀(Certhilauda brevirostris)仅生活在南非的阿古拉斯平原,该地区被广泛改造为农作物生产和放牧。我们提供了关于巢和蛋的特征,窝和窝的大小,亲代照顾和繁殖成功的数据,以前没有描述过这个物种。在2020年和2021年的实地调查中,发现了29个鸟巢。其中,有16个被摄像机监控。产蛋始于冬末(7月),一直持续到夏初(11月下旬)。大多数鸟巢(66%)位于rensterveld,这是Fynbos生物群的一个独特植被组成部分,其余的位于人类改造的景观中。雌性云雀负责筑巢和孵化。两性都喂养雏鸟,喂养率与雏鸟年龄和时间有关,而与窝仔数无关。繁殖成功率很低,只有14%的巢穴会孵出雏鸟。在捕食事件发生后,只观察到一次重复筑巢的尝试,但尝试被放弃了。巢捕食是巢失败的主要原因,共发现了8种巢捕食者。在雷诺斯特费尔德筑巢的明显偏好突出了保护这种濒危栖息地类型的必要性。作为一种在土地上筑巢的物种,这种云雀面临着许多威胁,包括栖息地丧失、捕食压力改变、暴露于杀虫剂和筑巢地点的干扰。
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The breeding ecology of the Agulhas Long-billed Lark: an endemic bird dependent on the remnant Renosterveld of the Western Cape Province, South Africa

The Agulhas Long-billed Lark Certhilauda brevirostris is restricted to the Agulhas Plain, South Africa, a region extensively transformed for crop production and sheep grazing. We present data on nest and egg characteristics, clutch and brood size, parental care and breeding success previously undescribed for this species. During field surveys in 2020 and 2021, 29 nests were located. Of these, 16 were monitored by camera traps. Laying started in late winter (July) and continued until early summer (late November). Most nests (66%) were in Renosterveld, a unique vegetation component of the Fynbos Biome, with the remainder in human-modified landscapes. Female larks were responsible for nest construction and incubation. Both sexes provisioned nestlings, with provisioning rate related to nestling age and time of day but not brood size. Breeding success was low, with only 14% of nests fledging any young. Only one repeat nesting attempt following a predation event was observed, but the attempt was abandoned. Nest predation was the main cause of nest failure, with eight species of nest predators identified. An apparent preference for nesting in Renosterveld highlights the need for protection of this endangered habitat type. As a ground-nesting species in an agriculturally transformed landscape, this lark faces numerous threats associated with habitat loss, altered predation pressure, exposure to pesticides and disturbance at nest sites.

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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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