气候变化领域集成服务门户(CCPortal): Increasing Cervidae populations have variable impacts on habitat suitability for threatened forest plant and lichen species

CCPortal

DOI	10.1016/j.foreco.2020.118286
	Increasing Cervidae populations have variable impacts on habitat suitability for threatened forest plant and lichen species
	Speed J.D.M.; Austrheim G.; Bendiksby M.; Kolstad A.L.; Vuorinen K.E.M.
发表日期	2020
ISSN	0378-1127
卷号	473
英文摘要	Large herbivores play a key role in temperate and boreal forest ecosystems. Cervidae (deer) population densities and community structure have undergone drastic changes in many parts of the world over the past decades, often with deer populations increasing. Many studies show impacts of Cervidae on multiple ecosystem properties, including vegetation and biodiversity, at local spatial scales. At larger spatial scales, however, impacts of changing Cervidae populations on forest ecosystems are less known. Although both abiotic and biotic dimensions contribute to shaping species’ niches, abiotic variables are generally given prominence when modelling species habitats and ranges. This is despite biotic changes, including changes in trophic structure, being an important component of global environmental change. In this study, we examined the potential contribution of Cervidae densities to the habitat suitability for rare plant and lichen species across the temperate and boreal forests of Norway, where cervid densities have increased over the past 60 years. We also examined how these changes in herbivore communities may have shaped habitat suitability for rare lichens and plants and discuss the results in light of continuing shifts in herbivore assemblages. We ran habitat suitability models for 47 species of rare plants and lichens, which were selected based on herbivory reported as a criterion for placement on the national red list for species. Climate (temperature and precipitation), forest (forest type and productivity), soil pH and Cervidae densities (moose Alces alces, red deer Cervus elaphus and roe deer Capreolus capreolus) were used as independent variables. Densities of one or more of the three Cervidae species were inferred to be associated with the distribution of 14 (ten lichen, one bryophyte and three vascular plant species) of these 47 species. We found a range of habitat suitability associations with Cervidae densities, including positive, negative and hump-backed responses. Increases in Cervidae densities over the past 60 years may have led to different spatial trends in habitat suitability across the 14 species. Our results suggest that Cervidae densities are associated with the distribution of rare forest plant and lichen species differently at large spatial scales; experimental studies should test the causality of these associations. If causal, this implies that Cervidae management should find a balance between high and low densities to conserve several plant and lichen species. The preponderance of epiphytic lichens species, for which habitat suitability was associated with Cervidae densities, calls for field studies to focus on Cervidae impacts on forest lichens. © 2020 The Authors
关键词	Biodiversity Conservation Ecosystems Forestry Fungi Population statistics Soil testing Boreal forest ecosystems Capreolus capreolus Community structures Global environmental change Habitat suitability model Independent variables Population densities Vascular plant species Population distribution biodiversity boreal forest bryophyte community structure deer endangered species epiphyte forest ecosystem herbivore lichen Red List Biodiversity Conservation Ecosystems Forestry Fungi Lichens Organizations Plants Norway Alces alces bryophytes Capreolus Capreolus capreolus Cervidae Cervus elaphus Tracheophyta
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132702
推荐引用方式 GB/T 7714	Speed J.D.M.,Austrheim G.,Bendiksby M.,et al. Increasing Cervidae populations have variable impacts on habitat suitability for threatened forest plant and lichen species[J]. Forest Ecology and Management,2020,473.
APA	Speed J.D.M.,Austrheim G.,Bendiksby M.,Kolstad A.L.,&Vuorinen K.E.M..(2020).Increasing Cervidae populations have variable impacts on habitat suitability for threatened forest plant and lichen species.,473.
MLA	Speed J.D.M.,et al."Increasing Cervidae populations have variable impacts on habitat suitability for threatened forest plant and lichen species".473(2020).