DOI: 10.1111/geb.13048
论文题名: Functional traits explain the Hutchinsonian niches of plant species
作者: Treurnicht M. ; Pagel J. ; Tonnabel J. ; Esler K.J. ; Slingsby J.A. ; Schurr F.M.
刊名: Global Ecology and Biogeography
ISSN: 1466822X
出版年: 2020
卷: 29, 期: 3 语种: 英语
英文关键词: demography
; environmental niche
; functional biogeography
; Hutchinsonian niche
; niche optimum
; niche width
; plant functional traits
; plant performance
; population growth rate
Scopus关键词: biodiversity
; biogeography
; demography
; environmental change
; functional group
; intraspecific variation
; niche
; plant
; population growth
; South Africa
; Hutchinsonia
; Proteaceae
英文摘要: Aim: The Hutchinsonian niche is a foundational concept in ecology and evolutionary biology that describes fundamental characteristics of any species: the global maximum population growth rate (rmax); the niche optimum (the environment for which rmax is reached); and the niche width (the environmental range for which intrinsic population growth rates are positive). We examine whether these characteristics are related to inter- and intraspecific variation in functional traits. Location: Cape Floristic Region, South Africa. Time period: Present day. Major taxa studied: Twenty-six plant species (Proteaceae). Methods: We measured leaf, plant-architectural and seed traits across species geographical ranges. We then examined how species-mean traits are related to demographically derived niche characteristics of rmax, in addition to niche optima and widths in five environmental dimensions, and how intraspecific trait variation is related to niche widths. Results: Interspecific trait variation generally exceeded range-wide intraspecific trait variation. Species-mean trait values were associated with variation in rmax (R2 = 0.27) but were more strongly related to niche optima (mean R2 = 0.56). These relationships generally matched trait–environment associations described in the literature. Both species-mean traits and intraspecific trait variability were strongly related to niche widths (R2 = 0.66 and 0.59, respectively). Moreover, niche widths increased with intraspecific trait variability. Overall, the different niche characteristics were associated with few, largely non-overlapping sets of traits. Main conclusions: Our study relating functional traits to Hutchinsonian niches demonstrates that key demographic properties of species relate to few traits with relatively strong effects. Our results further support the hypothesis that intraspecific trait variation increases species niche widths. Given that niche characteristics were related to distinct sets of traits, different aspects of environmental change might affect axes of trait variation independently. Trait-based studies of Hutchinsonian niches thus yield important insights into the mechanisms shaping functional biodiversity, which should reinforce the role of traits in functional biogeography. © 2019 The Authors. Global Ecology and Biogeography published by John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158997
Appears in Collections: 气候变化与战略
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作者单位: Institute of Landscape and Plant Ecology, University of Hohenheim, Stuttgart, Germany; Department of Conservation Ecology and Entomology, Stellenbosch University, Stellenbosch, South Africa; South African Environmental Observation Network, Fynbos Node, Cape Town, South Africa; Department of Ecology and Evolution, UNIL-SORGE, University of Lausanne, Lausanne, Switzerland; DSI-NRF Centre for Invasion Biology, Stellenbosch University, Stellenbosch, South Africa; Centre for Statistics in Ecology, Environment and Conservation, Department of Biological Sciences, University of Cape Town, Cape Town, South Africa
Recommended Citation:
Treurnicht M.,Pagel J.,Tonnabel J.,et al. Functional traits explain the Hutchinsonian niches of plant species[J]. Global Ecology and Biogeography,2020-01-01,29(3)