DOI: 10.1016/j.foreco.2015.01.015
Scopus记录号: 2-s2.0-84922369649
论文题名: Shelter provided by wood, facilitation, and density-dependent herbivory influence Great Basin bristlecone pine seedling survival
作者: Maher C.T. ; Barber A.L. ; Affleck D.L.R.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 342 起始页码: 76
结束页码: 83
语种: 英语
英文关键词: Density-dependent mortality
; Facilitation
; Herbivory
; Microsite
; Pinus longaeva
Scopus关键词: Animals
; Ecosystems
; Density dependent
; Facilitation
; Herbivory
; Microsite
; Pinus longaeva
; Seed
; coniferous forest
; density dependence
; facilitation
; herbivory
; mortality
; seedling
; shelter
; survival
; woodland
; United States
; White Mountains [California-Nevada]
; Artemisia tridentata
; Pinus aristata
; Pinus longaeva
英文摘要: Microsites created by live plants and non-living structures can be important for plant establishment where abiotic stress is high. The activity of herbivores and resulting pattern of seedling survival also affects plant distributions. We investigated factors thought to influence survival of bristlecone pine (Pinus longaeva Bailey) seedlings in the White Mountains, California, USA, with two field experiments in which microsite and exposure to herbivory were manipulated. In the microsite experiment, we planted seedlings underneath wooden shade structures, underneath sagebrush plants, and in exposed locations. In the herbivory experiment, we tested the effects of herbivore exclusion in three different habitat types. We planted seedlings in full wire cages (herbivores excluded), in half cages (herbivores allowed while enabling assessment of possible non-herbivore effects of cages on seedling survival), or with no cage (herbivores allowed), and repeated these treatments in three habitats: below, within, and above a bristlecone woodland. Over three growing seasons, seedlings planted under wooden shade structures had higher survival (28.9%) than seedlings growing under sagebrush (10%) or in exposed areas (3.3%). We found a significant treatment by habitat interaction in the herbivory experiment (χ2=12.056, P=0.017), driven by a clear pattern of high herbivory inside the bristlecone woodland, but not above or below it. Our results suggest that biologically-derived microsites (shelter from dead wood and live shrubs), as well as herbivore-mediated density-dependent mortality, are important determinants of bristlecone pine seedling survival. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65519
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA, United States; Department of Forest Management, College of Forestry and Conservation, University of Montana, 32 Campus Drive, Missoula, MT, United States
Recommended Citation:
Maher C.T.,Barber A.L.,Affleck D.L.R.. Shelter provided by wood, facilitation, and density-dependent herbivory influence Great Basin bristlecone pine seedling survival[J]. Forest Ecology and Management,2015-01-01,342