干旱区生态环境知识资源中心(Arid): Habitat associations of dryland avian communities during an extended dry period

Arid

DOI	10.1111/aec.13251
	Habitat associations of dryland avian communities during an extended dry period
	Gorta, Simon B. Z.; Callaghan, Corey T.; Pedler, Reece D.; Read, John L.; West, Rebecca S.; Kingsford, Richard T.
通讯作者	Gorta, SBZ
来源期刊	AUSTRAL ECOLOGY
ISSN	1442-9985
EISSN	1442-9993
出版年	2023
卷号	48 期号:1 页码:56-80
英文摘要	The influence of resource availability on ecosystem function varies spatially and temporally, among and within ecosystems. Dramatic shifts in moisture-driven resources can drive bottom-up effects on animal behaviours and distributions. Further, complexity arises when landscapes are influenced by large mammalian grazers and predator-induced trophic cascades, such as those mediated by the dingo (Canis familiaris (Dingo)) in the eastern arid Strzelecki Desert in Australia. During the driest two-year period on record for this region, we investigated the persistence of avian communities associated with structurally distinct dunes and swale habitats, and across two different land management regimes (pastoral land with livestock and dingoes, and Sturt National Park managed for conservation without these animals). We grouped all birds into dietary functional groups to infer patterns of habitat use associated with available resources. We also compared incidental observations of the 'winter' bird community in part of the study region between the extended dry period of 2018/2019 and wet period of 2020/2021. Despite habitat partitioning, the avian community did not differ between land management regimes except in species richness during the dry period, likely driven by the low numbers of birds present during the surveys. Incidental observations indicated that insectivorous and omnivorous species dominated the bird community in the dry period, with granivorous species forming a greater proportion of the bird community during wet times. Birds with completely or partially insectivorous diets dominated avian species composition on surveys in the dry period, but there were distinct structural vegetation associations among functional groups, indicating that heterogeneity in vegetation structure was likely important for the conservation of refuges, which enable the persistence of avifauna during extended dry periods. Distinct habitat type, structure and available resources shaped avian communities in this landscape, during the extremely resource-limited extended dry period, with implications for conservation and management, particularly given the increasing drying effects of climate change.
英文关键词	arid bird diet drought functional group primary productivity resource limitation trophic cascade
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000878433400001
WOS关键词	BOTTOM-UP ; APEX PREDATOR ; TOP-DOWN ; ARID LANDS ; SEED BANK ; VEGETATION ; DESERT ; SHRUBS ; BIRDS ; SOIL
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395515
推荐引用方式 GB/T 7714	Gorta, Simon B. Z.,Callaghan, Corey T.,Pedler, Reece D.,et al. Habitat associations of dryland avian communities during an extended dry period[J],2023,48(1):56-80.
APA	Gorta, Simon B. Z.,Callaghan, Corey T.,Pedler, Reece D.,Read, John L.,West, Rebecca S.,&Kingsford, Richard T..(2023).Habitat associations of dryland avian communities during an extended dry period.AUSTRAL ECOLOGY,48(1),56-80.
MLA	Gorta, Simon B. Z.,et al."Habitat associations of dryland avian communities during an extended dry period".AUSTRAL ECOLOGY 48.1(2023):56-80.