干旱区生态环境知识资源中心(Arid): Local resource availability drives habitat use by a threatened avian granivore in savanna woodlands

Arid

DOI	10.1371/journal.pone.0306842
	Local resource availability drives habitat use by a threatened avian granivore in savanna woodlands
	van Osta, John M.; Dreis, Brad; Grogan, Laura F.; Castley, J. Guy
通讯作者	van Osta, JM
来源期刊	PLOS ONE
ISSN	1932-6203
出版年	2024
卷号	19 期号:8
英文摘要	Conserving threatened species relies on an understanding of their habitat requirements. This is especially relevant for granivorous birds, whose habitat use and movement patterns are intricately linked to the spatial and temporal availability of resources such as food and water. In this study, we investigated the habitat use, home range and daily activity patterns of the Endangered Southern Black-throated Finch (SBTF; Poephila cincta cincta) within a 75,000 ha savanna woodland study area in northeastern Australia. This semi-arid region is one of the key remaining strongholds for the species and is characterised by substantially different habitat and climatic conditions than areas where previous research on this species has been undertaken. We radio tracked 142 SBTF using both manual tracking and an array of 27 automated radio towers, which revealed a strong preference for eucalypt-dominated grassy woodland communities. The preference for these habitats also increased with decreasing distance to permanent water. While SBTF occupied large home ranges, individual SBTF were largely sedentary during the radio tracking period (21.8, range = 0.83-120 days), with few landscape-scale movements of more than 4.5 km. Daily foraging activity of SBTF exhibited bimodal peaks in the early morning and late afternoon, while other activities were greatest from the late morning to the early afternoon. Compared to other estrildid finches, our research suggests that SBTF track resources at a local scale across a large home range. We postulate that in times of resource scarcity SBTF may use dietary diversification, instead of landscape or regional-scale nomadic movements, to meet their resource needs. The species' movement patterns underscore the importance of local scale habitat management to facilitate resource availability throughout the year. Furthermore, our research helps target monitoring designs for granivorous birds that focus on the species' diurnal activity patterns.
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:001288760100019
WOS关键词	HOME-RANGE ; LAGONOSTICTA-SANGUINODORSALIS ; ESTRILDID FINCHES ; SELECTION ; PATTERNS ; BIRD ; TRANSMITTERS ; VEGETATION ; RETENTION ; BEHAVIOR
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405199
推荐引用方式 GB/T 7714	van Osta, John M.,Dreis, Brad,Grogan, Laura F.,et al. Local resource availability drives habitat use by a threatened avian granivore in savanna woodlands[J],2024,19(8).
APA	van Osta, John M.,Dreis, Brad,Grogan, Laura F.,&Castley, J. Guy.(2024).Local resource availability drives habitat use by a threatened avian granivore in savanna woodlands.PLOS ONE,19(8).
MLA	van Osta, John M.,et al."Local resource availability drives habitat use by a threatened avian granivore in savanna woodlands".PLOS ONE 19.8(2024).