干旱区生态环境知识资源中心(Arid): The role of the soil seed store in the survival of an invasive population of Poa annua at Point Thomas Oasis, King George Island, maritime Antarctica

Arid

DOI	10.1016/j.gecco.2019.e00679
	The role of the soil seed store in the survival of an invasive population of Poa annua at Point Thomas Oasis, King George Island, maritime Antarctica
	Galera, Halina 1; Rudak, Agnieszka 1; Czyz, Ewa A.2; Chwedorzewska, Katarzyna J.3,4; Znoj, Anna 3; Wodkiewicz, Maciej 1
通讯作者	Galera, Halina
来源期刊	GLOBAL ECOLOGY AND CONSERVATION
ISSN	2351-9894
出版年	2019
卷号	19
英文摘要	Poa annua, an invasive species in the Antarctic, had established a relatively large population at Point Thomas Oasis (Maritime Antarctic) recorded from 1985/1986 austral summer. We present a detailed account of the expansion of P. annua across its 30 years of establishment (1985/1986, 1986/1987, 1987/1988, 1989/1990 and 1991/1992 - historic data, 2014/2015 and 2015/2016 - our own observations) and how this relates to the historical human activity at this site. We also evaluate the first stages of the control effort, i.e. tussock removal by hand. For a subset of the removed tussocks we also removed soil in order to assess the importance of the soil seed bank in the course of this invasion. The population showed a spatio-temporal dynamic increase in area from 1985/1986 to 1987/1988 growing season followed by a decrease in area noted in 1989/1990 and subsequent increase in area and diversity of occupied habitats. Analysis of distribution dynamics did not show a significant difference in the number of tussocks recorded in the 2014/2015 austral summer between cartogram squares occupied in 1991/1992 or earlier, and those occupied just in 2014/2015. There was, however, a high correlation in the number of tussocks per square between the 2014/2015 and 2015/2016 census. Field observations conducted in 2015/2016 within the whole Point Thomas Oasis indicated that on 6 out of 51 sites cleared during the 2014/2015 austral summer, P. annua had re-established, mostly on sites where no soil was collected. Of the soil samples removed from beneath tussocks, seed germinated in 19% of the samples (160 seedlings in total). These results indicate that the strategy of soil seed bank formation has been very effective in extreme Antarctic conditions, providing a 'temporal rescue effect' which has enabled the survival of the population, and hinders the effective eradication of this invasive species. (C) 2019 Published by Elsevier B.V.
英文关键词	Seed germination Temporal rescue effect Cartogram Eradication
类型	Article
语种	英语
国家	Poland ; Switzerland
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000477695200032
WOS关键词	BIOLOGICAL INVASIONS ; PLANT INVASIONS ; SOUTH SHETLAND ; ALIEN PLANTS ; ERADICATION ; BANK ; L. ; MANAGEMENT ; RISK ; ESTABLISHMENT
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216104
作者单位	1.Univ Warsaw, Dept Plant Ecol & Environm Conservat, Fac Biol, Biol & Chem Res Ctr, Zwirki & Wigury 101, PL-02089 Warsaw, Poland; 2.Univ Zurich, Dept Geog, Remote Sensing Labs, Winterthurerstr 190, CH-8057 Zurich, Switzerland; 3.Inst Biochem & Biophys PAS, Pawinskiego 5a, PL-02106 Warsaw, Poland; 4.Warsaw Univ Life Sci SGGW, Dept Agron, Nowoursynowska 159, PL-02766 Warsaw, Poland
推荐引用方式 GB/T 7714	Galera, Halina,Rudak, Agnieszka,Czyz, Ewa A.,et al. The role of the soil seed store in the survival of an invasive population of Poa annua at Point Thomas Oasis, King George Island, maritime Antarctica[J],2019,19.
APA	Galera, Halina,Rudak, Agnieszka,Czyz, Ewa A.,Chwedorzewska, Katarzyna J.,Znoj, Anna,&Wodkiewicz, Maciej.(2019).The role of the soil seed store in the survival of an invasive population of Poa annua at Point Thomas Oasis, King George Island, maritime Antarctica.GLOBAL ECOLOGY AND CONSERVATION,19.
MLA	Galera, Halina,et al."The role of the soil seed store in the survival of an invasive population of Poa annua at Point Thomas Oasis, King George Island, maritime Antarctica".GLOBAL ECOLOGY AND CONSERVATION 19(2019).