来自Pernambuco特有中心的两种濒危热带森林林下食虫雀形目昆虫种群密度估算和关键微生境参数

IF 1.4 4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION Avian Conservation and Ecology Pub Date : 2022-01-01 DOI:10.5751/ace-02231-170222
Luiza Carvalho Prado, T. C. Dias, Lahert William Lobo de Araújo, L. F. Silveira, M. Francisco
{"title":"来自Pernambuco特有中心的两种濒危热带森林林下食虫雀形目昆虫种群密度估算和关键微生境参数","authors":"Luiza Carvalho Prado, T. C. Dias, Lahert William Lobo de Araújo, L. F. Silveira, M. Francisco","doi":"10.5751/ace-02231-170222","DOIUrl":null,"url":null,"abstract":". The Pernambuco Endemism Center (PEC) is the most fragmented and degraded tract of the Atlantic Forest, considered to be a hotspot within a hotspot. Recent bird extinctions and the high number of endangered taxa have called the attention of conservation practitioners all over the world to this area. Among the most vulnerable groups of birds are the insectivorous passerines of the forest understory, yet empirical information on demography and habitat requirements are unavailable for these taxa. Here, we provide population density estimates and microhabitat selection information for two endangered insectivorous passerines endemic to the PEC, the Pernambuco Fire-eye, Pyriglena pernambucensis , and the Black-cheeked Gnateater, Conopophaga melanops nigrifrons . Distance-sampling estimates resulted in population densities of 0.15 and 0.35 individuals/ha, respectively, in an Atlantic Forest fragment of approximately 1000 ha. Extrapolations of population densities to 39 fragments where the occurrence of these taxa was confirmed resulted in population estimates of 4936 individuals for the Pernambuco Fire-eye and 12,679 individuals for the Black-cheeked Gnateater, but these may be underestimates because other fragments where they could potentially occur were never surveyed. Although extrapolating data from only one fragment to other areas is problematic, these are the first rough minimum population size estimates for birds from the PEC. Microhabitat preference analyses revealed that both species selected sites with denser forest understory vegetation, which is associated with areas in regeneration. This is evidence that these taxa can tolerate certain levels of habitat disturbance and that their limited distributions and habitat loss may be more important causes of threat than habitat requirements. In the face of ongoing PEC fragmentation, our data will serve to parameterize other studies and may contribute to practical conservation policies","PeriodicalId":49233,"journal":{"name":"Avian Conservation and Ecology","volume":"1 1","pages":""},"PeriodicalIF":1.4000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Population density estimates and key microhabitat parameters for two endangered tropical forest understory insectivorous passerines from the Pernambuco Endemism Center\",\"authors\":\"Luiza Carvalho Prado, T. C. Dias, Lahert William Lobo de Araújo, L. F. Silveira, M. Francisco\",\"doi\":\"10.5751/ace-02231-170222\",\"DOIUrl\":null,\"url\":null,\"abstract\":\". The Pernambuco Endemism Center (PEC) is the most fragmented and degraded tract of the Atlantic Forest, considered to be a hotspot within a hotspot. Recent bird extinctions and the high number of endangered taxa have called the attention of conservation practitioners all over the world to this area. Among the most vulnerable groups of birds are the insectivorous passerines of the forest understory, yet empirical information on demography and habitat requirements are unavailable for these taxa. Here, we provide population density estimates and microhabitat selection information for two endangered insectivorous passerines endemic to the PEC, the Pernambuco Fire-eye, Pyriglena pernambucensis , and the Black-cheeked Gnateater, Conopophaga melanops nigrifrons . Distance-sampling estimates resulted in population densities of 0.15 and 0.35 individuals/ha, respectively, in an Atlantic Forest fragment of approximately 1000 ha. Extrapolations of population densities to 39 fragments where the occurrence of these taxa was confirmed resulted in population estimates of 4936 individuals for the Pernambuco Fire-eye and 12,679 individuals for the Black-cheeked Gnateater, but these may be underestimates because other fragments where they could potentially occur were never surveyed. Although extrapolating data from only one fragment to other areas is problematic, these are the first rough minimum population size estimates for birds from the PEC. Microhabitat preference analyses revealed that both species selected sites with denser forest understory vegetation, which is associated with areas in regeneration. This is evidence that these taxa can tolerate certain levels of habitat disturbance and that their limited distributions and habitat loss may be more important causes of threat than habitat requirements. In the face of ongoing PEC fragmentation, our data will serve to parameterize other studies and may contribute to practical conservation policies\",\"PeriodicalId\":49233,\"journal\":{\"name\":\"Avian Conservation and Ecology\",\"volume\":\"1 1\",\"pages\":\"\"},\"PeriodicalIF\":1.4000,\"publicationDate\":\"2022-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Avian Conservation and Ecology\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://doi.org/10.5751/ace-02231-170222\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"BIODIVERSITY CONSERVATION\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Avian Conservation and Ecology","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.5751/ace-02231-170222","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIODIVERSITY CONSERVATION","Score":null,"Total":0}
引用次数: 0

摘要

. 伯南布哥特有中心(PEC)是大西洋森林中最破碎和退化的区域,被认为是热点中的热点。近年来鸟类的灭绝和大量的濒危物种引起了世界各地保护工作者的关注。最脆弱的鸟类群体是森林林下的食虫雀形目,但这些分类群的人口和栖息地需求的经验信息是不可用的。本研究提供了两种PEC特有的濒危食虫雀鸟,Pernambuco火眼虫(Pyriglena pernambucensis)和黑颊Gnateater (Conopophaga melanops nigrifrons)的种群密度估算和微生境选择信息。距离抽样估计的结果是,在大约1000公顷的大西洋森林片段中,种群密度分别为0.15和0.35只/公顷。对39个片段的种群密度进行外推,证实了这些分类群的存在,结果伯南布哥火眼的种群密度估计为4936只,黑颊Gnateater的种群密度估计为12679只,但这些可能被低估了,因为其他可能出现这些分类群的片段从未被调查过。虽然仅从一个片段推断数据到其他地区是有问题的,但这些是PEC中鸟类的第一个粗略的最小种群规模估计。微生境偏好分析表明,两种植物均选择林下植被较密的生境,这与更新面积有关。这表明这些分类群可以忍受一定程度的栖息地干扰,它们有限的分布和栖息地的丧失可能是比栖息地需求更重要的威胁原因。面对持续的PEC碎片化,我们的数据将为其他研究提供参数化,并可能有助于制定实际的保护政策
本文章由计算机程序翻译,如有差异,请以英文原文为准。
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Population density estimates and key microhabitat parameters for two endangered tropical forest understory insectivorous passerines from the Pernambuco Endemism Center
. The Pernambuco Endemism Center (PEC) is the most fragmented and degraded tract of the Atlantic Forest, considered to be a hotspot within a hotspot. Recent bird extinctions and the high number of endangered taxa have called the attention of conservation practitioners all over the world to this area. Among the most vulnerable groups of birds are the insectivorous passerines of the forest understory, yet empirical information on demography and habitat requirements are unavailable for these taxa. Here, we provide population density estimates and microhabitat selection information for two endangered insectivorous passerines endemic to the PEC, the Pernambuco Fire-eye, Pyriglena pernambucensis , and the Black-cheeked Gnateater, Conopophaga melanops nigrifrons . Distance-sampling estimates resulted in population densities of 0.15 and 0.35 individuals/ha, respectively, in an Atlantic Forest fragment of approximately 1000 ha. Extrapolations of population densities to 39 fragments where the occurrence of these taxa was confirmed resulted in population estimates of 4936 individuals for the Pernambuco Fire-eye and 12,679 individuals for the Black-cheeked Gnateater, but these may be underestimates because other fragments where they could potentially occur were never surveyed. Although extrapolating data from only one fragment to other areas is problematic, these are the first rough minimum population size estimates for birds from the PEC. Microhabitat preference analyses revealed that both species selected sites with denser forest understory vegetation, which is associated with areas in regeneration. This is evidence that these taxa can tolerate certain levels of habitat disturbance and that their limited distributions and habitat loss may be more important causes of threat than habitat requirements. In the face of ongoing PEC fragmentation, our data will serve to parameterize other studies and may contribute to practical conservation policies
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Avian Conservation and Ecology
Avian Conservation and Ecology BIODIVERSITY CONSERVATION-ORNITHOLOGY
CiteScore
2.20
自引率
7.10%
发文量
43
审稿时长
>12 weeks
期刊介绍: Avian Conservation and Ecology is an open-access, fully electronic scientific journal, sponsored by the Society of Canadian Ornithologists and Birds Canada. We publish papers that are scientifically rigorous and relevant to the bird conservation community in a cost-effective electronic approach that makes them freely available to scientists and the public in real-time. ACE is a fully indexed ISSN journal that welcomes contributions from scientists all over the world. While the name of the journal implies a publication niche of conservation AND ecology, we think the theme of conservation THROUGH ecology provides a better sense of our purpose. As such, we are particularly interested in contributions that use a scientifically sound and rigorous approach to the achievement of avian conservation as revealed through insights into ecological principles and processes. Papers are expected to fall along a continuum of pure conservation and management at one end to more pure ecology at the other but our emphasis will be on those contributions with direct relevance to conservation objectives.
期刊最新文献
Using an ensemble approach to predict habitat of Dusky Grouse (Dendragapus obscurus) in Montana, USA Annual migratory movement, apparent molt-migration, migration schedule, and diffuse migratory connectivity of Hermit Warblers High post-fledging survival and site persistence using mark-resight methodology for Oregon Vesper Sparrows in the Willamette Valley, Oregon Weather and regional effects on winter counts of Rusty Blackbirds (Euphagus carolinus) Factors influencing home range size and overlap in nonbreeding Kirtland’s Warblers on Eleuthera, The Bahamas
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1