Distribution and abundance of threatened and heavily traded birds in the mountains of western Java

IF 1.5 4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION
S. Marsden, A. R. Junaid, Fajar Kaprawi, Faris Muladi, Ganjar Cahyo Aprianto, S. V. van Balen, Ria Saryanthi, N. Collar, C. Devenish
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引用次数: 0

Abstract

Summary There is serious concern for the future of a wide range of birds in Java and elsewhere in Indonesia due to both loss of habitat and trapping for the cagebird trade (the so-called “Asian Songbird Crisis”). Despite this concern, few data on presence and abundance of key species exist. We provide such data on 184 bird species from over two years of biodiversity surveys from 37 sites on 12 mountains in West and Central Java. Many of these species are heavily traded, endemic, and globally threatened. Several of the threatened endemics, notably Javan Trogon and Javan Cochoa, were often recorded, in terms of both geographical spread and numerical abundance. Rufous-fronted Laughingthrush, Spotted Crocias, and Orange-spotted Bulbul, believed to be threatened by trapping for the songbird trade, appear to remain fairly widespread. By contrast, Brown-cheeked Bulbul, Chestnut-backed (Javan) Scimitar-babbler, Javan Oriole, and especially Javan Blue-flycatcher, recorded on just a single occasion, and Javan Green Magpie, which we failed to record with certainty, now appear to be extremely rare. Our encounter rates, while not pinned to specific mountains for security reasons, represent an important baseline against which future changes in abundance can be gauged.
爪哇西部山区受威胁和交易频繁的鸟类的分布和数量
摘要由于栖息地的丧失和笼鸟贸易的诱捕(所谓的“亚洲鸣禽危机”),爪哇岛和印度尼西亚其他地方的各种鸟类的未来都令人严重担忧。尽管存在这种担忧,但关于关键物种的存在和丰度的数据很少。我们提供了184种鸟类的数据,这些数据来自爪哇西部和中部12座山上37个地点两年多的生物多样性调查。这些物种中的许多都是严重的贸易、特有物种,并受到全球威胁。就地理分布和数量丰度而言,经常记录到几种受威胁的地方病,特别是爪哇岛特罗贡和爪哇岛科乔亚。被认为受到鸣禽贸易诱捕威胁的棕额笑画眉、斑点鳄和橙斑Bulbul似乎仍然相当普遍。相比之下,只有一次记录的棕色脸颊的Bulbul、栗子背(爪哇)弯刀牙鲆、爪哇黄莺,尤其是爪哇蓝捕蝇草,以及我们未能确定记录的爪哇绿喜鹊,现在似乎极为罕见。我们的遭遇率,虽然出于安全原因没有固定在特定的山脉上,但代表了一个重要的基线,可以用来衡量未来的丰度变化。
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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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