气候变化领域集成服务门户(CCPortal): Interactive effects of fuels reduction and large herbivores on shrub assemblages in dry conifer forests of the interior west, USA

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DOI	10.1016/j.foreco.2020.118031
	Interactive effects of fuels reduction and large herbivores on shrub assemblages in dry conifer forests of the interior west, USA
	Hall Defrees D.; Averett J.P.; Wisdom M.J.; Endress B.A.
发表日期	2020
ISSN	0378-1127
卷号	463
英文摘要	Deciduous shrubs are widely distributed throughout temperate and boreal conifer forests and influence a wide range of ecological processes and forest resources. In the interior western U.S., many deciduous shrubs are highly preferred forage by wild (elk, Cervus canadensis; deer, Odocoileus spp.) and domestic (cattle) ungulates which can influence shrub abundance, composition, structural characteristics, and related ecological processes and interactions. Stand disturbances and silvicultural practices can also affect shrub assemblages and managers in the interior western U.S. are increasingly implementing fuels reduction treatments such as stand thinning and prescribed fire to reduce fuel loads caused by more than a century of fire suppression. We evaluated the effects of ungulate herbivory and fuels reduction, alone and in concert, on deciduous shrub assemblages in coniferous dry forests of the interior west. We measured shrub richness, diversity, height, abundance and community composition in forest stands that underwent fuels reduction 15–17 years earlier, compared to untreated stands where no silvicultural treatments have occurred in over 50 years. Within each stand type, we also measured shrub assemblages in stands with and without ungulate herbivory. Shrub richness, diversity, frequency and height all declined in stands subjected to either fuels reduction treatments or herbivory; effects were most pronounced under the combined effect of fuels reduction and herbivory. Fuels reduction and herbivory also resulted in significant differences in shrub abundance and assemblage composition. Fuels reduction in dry forests with abundant ungulates may contribute to suppressed, more homogenous shrub communities. These effects may result in unintended impacts or alterations to important ecosystem processes and forest resources. Our results highlight the importance of considering responses of forest resources with low economic value, such as shrubs, in forest management activities. © 2020 Elsevier B.V.
关键词	Ecology Fuels Natural resources Plants (botany)Assemblage composition Community composition Ecological process Interactive effect Management activities Silvicultural practices Silvicultural treatments Structural characteristics Forestry boreal forest community structure coniferous forest deer dry forest forage forest resource herbivore population decline shrub silviculture species diversity species richness wild population Ecology Forestry Forests Fuels Natural Resources Processes Reduction Shrubs United States Bos Cervidae Cervus canadensis Coniferophyta Odocoileus Ungulata
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/132887
推荐引用方式 GB/T 7714	Hall Defrees D.,Averett J.P.,Wisdom M.J.,et al. Interactive effects of fuels reduction and large herbivores on shrub assemblages in dry conifer forests of the interior west, USA[J]. Forest Ecology and Management,2020,463.
APA	Hall Defrees D.,Averett J.P.,Wisdom M.J.,&Endress B.A..(2020).Interactive effects of fuels reduction and large herbivores on shrub assemblages in dry conifer forests of the interior west, USA.,463.
MLA	Hall Defrees D.,et al."Interactive effects of fuels reduction and large herbivores on shrub assemblages in dry conifer forests of the interior west, USA".463(2020).