气候变化领域集成服务门户(CCPortal): Decadal vegetation changes in a subarctic-alpine ecosystem: Can effects of Iceland's largest hydropower reservoir, climate change, and herbivory be detected?

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DOI	10.1111/avsc.12772
	Decadal vegetation changes in a subarctic-alpine ecosystem: Can effects of Iceland's largest hydropower reservoir, climate change, and herbivory be detected?
	Oskarsdottir, Gudrun; Agustsdottir, Kristin; Thorisson, Skarphedinn G.; Gudmundsdottir, Gerdur; Jonsdottir, Gudrun Aslaug
发表日期	2024
ISSN	1402-2001
EISSN	1654-109X
起始页码	27
结束页码	2
卷号	27 期号:2
英文摘要	AimsWhile plot-based vegetation surveys provide means to precisely track changes in plant species abundance and distribution, ecosystems are continuously influenced by numerous drivers, confounding interpretation of monitoring results. Following the making of Iceland's largest hydropower reservoir in 2006, a decadal vegetation monitoring was set up. Relating our results to those of different types of environmental monitoring associated with the hydropower project, we aimed to gain insights into the forces driving the spatio-temporal vegetation pattern.LocationSubarctic-alpine area near Halslon reservoir, East Iceland.MethodsAt the time of its making, we conducted a baseline plant survey in a total of 72 plots, spread around Halslon reservoir's vicinity (each containing ten 0.25 m2 subplots). Plots were located in three different habitat types (heathlands, wetlands, poorly vegetated land), at three different sites regarding direction and distance from the reservoir. A decade later, we resurveyed the plots and reviewed the results of other environmental monitoring projects in the area, mostly presented in the gray literature.ResultsTemporal changes in vegetation were mostly inconsistent between and within habitat types, but some general trends were noticed, that is, decreased lichen and fern cover in heathlands. Distance from the reservoir did not significantly affect changes in vegetation cover. The greatest overall changes were detected where great changes in herbivore land usage had been recorded during the study.ConclusionsDirect effects of Halslon reservoir on vegetation in our study plots were not noticed. Most likely, the reservoir indirectly impacted vegetation in our study through loss of grazing area, affecting herbivore land usage, coupled with an unrelated population growth of two of the area's main wild herbivores before and during the study period. Response to climate change was not detected, potentially concealed by substantial land-use change and a short study period. Resurvey of vegetation monitoring in a subarctic-alpine area near Iceland's largest hydropower reservoir revealed that after a decade, changes were mostly inconsistent between and within habitats. Direct effects of the reservoir and climate change were not found but rather, indirect effects of altered herbivory behavior, partly influenced by anthropogenic activities.image
英文关键词	climate warming; grazing; Halslon reservoir; Iceland; pink-footed geese; reindeer; soil erosion; vegetation monitoring
语种	英语
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
WOS类目	Plant Sciences ; Ecology ; Forestry
WOS记录号	WOS:001196383000001
来源期刊	APPLIED VEGETATION SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/288135
推荐引用方式 GB/T 7714	Oskarsdottir, Gudrun,Agustsdottir, Kristin,Thorisson, Skarphedinn G.,et al. Decadal vegetation changes in a subarctic-alpine ecosystem: Can effects of Iceland's largest hydropower reservoir, climate change, and herbivory be detected?[J],2024,27(2).
APA	Oskarsdottir, Gudrun,Agustsdottir, Kristin,Thorisson, Skarphedinn G.,Gudmundsdottir, Gerdur,&Jonsdottir, Gudrun Aslaug.(2024).Decadal vegetation changes in a subarctic-alpine ecosystem: Can effects of Iceland's largest hydropower reservoir, climate change, and herbivory be detected?.APPLIED VEGETATION SCIENCE,27(2).
MLA	Oskarsdottir, Gudrun,et al."Decadal vegetation changes in a subarctic-alpine ecosystem: Can effects of Iceland's largest hydropower reservoir, climate change, and herbivory be detected?".APPLIED VEGETATION SCIENCE 27.2(2024).