气候变化领域集成服务门户(CCPortal): The influence of shelter on abundance of the invasive dandelion, Taraxacum officinale, at its northern range limit

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DOI	10.1007/s10530-024-03339-w
	The influence of shelter on abundance of the invasive dandelion, Taraxacum officinale, at its northern range limit
	Da Silva, Francine D. B.; Kotanen, Peter M.
发表日期	2024
ISSN	1387-3547
EISSN	1573-1464
英文摘要	Invasive species represent a threat to many ecosystems but are nearly absent from arctic and subarctic Canada. The treeline town of Churchill, Manitoba, has an unusually high number of invasive species due to the presence of a grain port and railway, but few of these species have spread to the surrounding tundra; for instance, common dandelion (Taraxacum officinale) currently is restricted primarily to town, in contrast with its native congener, Taraxacum lacerum. To investigate whether the distribution of T. officinale is affected by the tendency of buildings to create warm, sheltered microenvironments, we surveyed the abundance of both dandelion species relative to existing structures in town. We established transects extending up to 5 m from each side of 23 buildings, and recorded the number of plants in 50 cm x 50 cm quadrats along each transect. We found that T. officinale performed better on the south sides of buildings, that flowering decreased away from buildings, and that these effects were stronger for T. officinale than the native T. lacerum. Soil temperatures were warmer on the south rather than on the north-facing sides, providing a possible explanation. Our results show that the distribution of T. officinale currently is more influenced by human-created microclimate compared to the abundance of its native relative. However, T. officinale may spread beyond these refuges as the climate continues to warm.
英文关键词	Arctic; Climate change; Microclimate; Subarctic; Taraxacum; Treeline
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology
WOS记录号	WOS:001226824600002
来源期刊	BIOLOGICAL INVASIONS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/296704
作者单位	University of Toronto; University Toronto Mississauga
推荐引用方式 GB/T 7714	Da Silva, Francine D. B.,Kotanen, Peter M.. The influence of shelter on abundance of the invasive dandelion, Taraxacum officinale, at its northern range limit[J],2024.
APA	Da Silva, Francine D. B.,&Kotanen, Peter M..(2024).The influence of shelter on abundance of the invasive dandelion, Taraxacum officinale, at its northern range limit.BIOLOGICAL INVASIONS.
MLA	Da Silva, Francine D. B.,et al."The influence of shelter on abundance of the invasive dandelion, Taraxacum officinale, at its northern range limit".BIOLOGICAL INVASIONS (2024).