干旱区生态环境知识资源中心(Arid): Palaeoenvironmental support for long-term aquatic refugia in Australia's Great Artesian Basin discharge springs

Arid

DOI	10.1080/20442041.2024.2313392
	Palaeoenvironmental support for long-term aquatic refugia in Australia's Great Artesian Basin discharge springs
	Negus, Peter M.; Watson-Fox, Loraine; Moss, Patrick; Gadd, Patricia S.; Hua, Quan; Farrell, Amirah; Vink, Judith; Ting, Jonathan
通讯作者	Negus, PM
来源期刊	INLAND WATERS
ISSN	2044-2041
EISSN	2044-205X
出版年	2023
卷号	13 期号:4 页码:486-499
英文摘要	In dryland areas, wetland refugia that provide permanent wetted habitats are important for the persistence of obligate aquatic species. Situated in Australia's arid and semiarid regions, Great Artesian Basin discharge springs contain high biodiversity and many endemic species and are believed to provide the only permanent wetted habitat. However, conflicting information indicates that hydroperiods in these springs can be variable. The aim of this study was to use palaeoenvironmental information to assess millennial-scale variability in one large spring wetland and provide an initial assessment on the long-term presence of wetted habitat. A sediment core was collected from Big Spring at Byarri (Edgbaston Station) in central Queensland, Australia, and the sedimentary layers were analysed using radiocarbon dating, geochemistry, and palynology. An age model developed on the radiocarbon dates indicated that changes in the rate of sediment deposition are likely associated with the last glacial maximum but with no disruption in the sediment accumulation, or therefore wetland development. Variable wetland and landscape conditions over similar to 43 000 years are supported by the geochemistry and palynological sedimentary records, including a change from a lacustrine to palustrine wetland and more recent changes, likely due to an anthropogenic presence in the landscape. The lack of a hiatus in available wetted habitat throughout the period of sediment development corroborates that Great Artesian Basin discharge springs represent a permanent wetted refugia in Australia's drylands.
英文关键词	aquatic refugia Itrax micro X-ray fluorescence radiocarbon spring wetlands
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001243709500001
WOS关键词	NORTH STRADBROKE ISLAND ; ENVIRONMENTAL-CHANGE ; MONSOON VARIABILITY ; ARID ZONE ; QUEENSLAND ; WETLANDS ; SCIENCE ; CONSERVATION ; PERSISTENCE ; DISPERSAL
WOS类目	Limnology ; Marine & Freshwater Biology
WOS研究方向	Marine & Freshwater Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396943
推荐引用方式 GB/T 7714	Negus, Peter M.,Watson-Fox, Loraine,Moss, Patrick,et al. Palaeoenvironmental support for long-term aquatic refugia in Australia's Great Artesian Basin discharge springs[J],2023,13(4):486-499.
APA	Negus, Peter M..,Watson-Fox, Loraine.,Moss, Patrick.,Gadd, Patricia S..,Hua, Quan.,...&Ting, Jonathan.(2023).Palaeoenvironmental support for long-term aquatic refugia in Australia's Great Artesian Basin discharge springs.INLAND WATERS,13(4),486-499.
MLA	Negus, Peter M.,et al."Palaeoenvironmental support for long-term aquatic refugia in Australia's Great Artesian Basin discharge springs".INLAND WATERS 13.4(2023):486-499.