Where do the Tropical Owls Roost: Multiscale Habitat Variables Explain Roost Site Selection by Two Sympatric Otus Species in the Andaman Archipelago, India

IF 0.8 4区 生物学 Q3 ORNITHOLOGY Acta Ornithologica Pub Date : 2023-06-14 DOI:10.3161/00016454AO2022.57.2.006
Shanmugavel Sureshmarimuthu, S. Babu, Nagaraj Kumara Honnavalli, N. Rajeshkumar
{"title":"Where do the Tropical Owls Roost: Multiscale Habitat Variables Explain Roost Site Selection by Two Sympatric Otus Species in the Andaman Archipelago, India","authors":"Shanmugavel Sureshmarimuthu, S. Babu, Nagaraj Kumara Honnavalli, N. Rajeshkumar","doi":"10.3161/00016454AO2022.57.2.006","DOIUrl":null,"url":null,"abstract":"Abstract. Understanding the niche differentiation between sympatric species that permit species to coexist and partition resource is the central concept in ecology. In this context, we evaluated the differences in roost site resources between two sympatric Otus species — Andaman Scops-owl Otus balli and Oriental Scops-owl Otus sunia in the Andaman Islands using a multi-scale approach. We measured variables that influence roost site use by owls at three different scales (tree, patch and macro). A total of 38 and 69 independent roost locations of O. balli and O. sunia respectively were recorded. We found that both species showed a high preference for Arecaceae plants at tree scale, possibly for their spiny structures that could offer protection. But both species showed different selection patterns at the patch and macro scales. At the patch scale, O. balli selected roosting sites in patches with relatively mature tree stands (characterised by higher tree height, girth at breast height and canopy cover) with thick understory cover (understory cover, height, and herbaceous elements). In contrast, O. sunia was found to select trees in secondary or highly disturbed forests. Land use and land cover types distinguish both species from their habitat preferences at a macro scale with a very low predicted overlap. The area of potential roost sites is very low for O. balli when compared to O. sunia. Our findings suggest that the two sympatric species' preferences for roost sites are shaped by the characteristics of evergreen forests of the Andaman Islands. Hence, any further changes to this forest type may have adverse effects on the endemic O. balli.","PeriodicalId":50888,"journal":{"name":"Acta Ornithologica","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2023-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Ornithologica","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.3161/00016454AO2022.57.2.006","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ORNITHOLOGY","Score":null,"Total":0}
引用次数: 0

Abstract

Abstract. Understanding the niche differentiation between sympatric species that permit species to coexist and partition resource is the central concept in ecology. In this context, we evaluated the differences in roost site resources between two sympatric Otus species — Andaman Scops-owl Otus balli and Oriental Scops-owl Otus sunia in the Andaman Islands using a multi-scale approach. We measured variables that influence roost site use by owls at three different scales (tree, patch and macro). A total of 38 and 69 independent roost locations of O. balli and O. sunia respectively were recorded. We found that both species showed a high preference for Arecaceae plants at tree scale, possibly for their spiny structures that could offer protection. But both species showed different selection patterns at the patch and macro scales. At the patch scale, O. balli selected roosting sites in patches with relatively mature tree stands (characterised by higher tree height, girth at breast height and canopy cover) with thick understory cover (understory cover, height, and herbaceous elements). In contrast, O. sunia was found to select trees in secondary or highly disturbed forests. Land use and land cover types distinguish both species from their habitat preferences at a macro scale with a very low predicted overlap. The area of potential roost sites is very low for O. balli when compared to O. sunia. Our findings suggest that the two sympatric species' preferences for roost sites are shaped by the characteristics of evergreen forests of the Andaman Islands. Hence, any further changes to this forest type may have adverse effects on the endemic O. balli.
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
热带猫头鹰在哪里栖息:多尺度栖息地变量解释印度安达曼群岛两种同域Otus物种的栖息地选择
摘要了解同域物种之间的生态位分化,使物种能够共存并分配资源,是生态学的核心概念。在此背景下,我们利用多尺度方法评估了安达曼群岛两种同域猫头鹰——安达曼鸮Otus balli和东方鸮Otus sunia在栖息地资源上的差异。我们在三个不同的尺度(树木、斑块和宏观)上测量了影响猫头鹰栖息地点的变量。分别有38个和69个独立栖息点被记录下来。我们发现这两个物种在树尺度上对槟榔科植物表现出高度的偏好,可能是因为它们的刺状结构可以提供保护。但两个物种在斑块和宏观尺度上表现出不同的选择模式。在斑块尺度上,球蚜选择树木相对成熟(树高、胸围和冠层盖度较高)、林下盖度(林下盖度、高度和草本成分)较厚的斑块为栖息地。与此相反,苏木叶蠹选择次生林或高度扰动林的树木。土地利用和土地覆盖类型在宏观尺度上区分了两种物种及其栖息地偏好,预测重叠度非常低。balli的潜在栖息地面积比O. suunia小得多。我们的研究结果表明,这两个同域物种对栖息地点的偏好是由安达曼群岛常绿森林的特征决定的。因此,对这种森林类型的任何进一步改变都可能对地方性的球孢粉孢产生不利影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Acta Ornithologica
Acta Ornithologica 生物-鸟类学
CiteScore
2.10
自引率
0.00%
发文量
14
审稿时长
>12 weeks
期刊介绍: Publishes scientific papers (original research reports, reviews, short notes, etc.) and announcements from all fields of ornithology. All manuscripts are peer-reviewed. Established in 1933 as Acta Ornithologica Musei Zoologici Polonici, since 1953 continued under the present title. Published twice a year by the Natura Optima Dux Foundation under the auspices of the Museum and Institute of Zoology, Polish Academy of Sciences.
期刊最新文献
Nest Habitat Selection and Nesting Success of Three Ground Nesting Passerines in Post Harvested Rice Fields of North East India Home Range, Territory, and Partner Replacement in the Rufous Hornero Furnarius rufus Intra-Seasonal Lek Changes of Great Snipe Gallinago media Males in the Northeast of Poland Song of the Riverbank Warbler Myiothlypis rivularis: Male Constraints and Female Territorial Signaling Minimum Nest Distances, Breeding Success and Use of Shared Cliffs for Andean Condor Vultur gryphus Breeding in Ecuador
×
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