globalchange  > 气候减缓与适应
DOI: 10.1111/ele.12914
Scopus记录号: 2-s2.0-85041211317
论文题名:
Survival rates indicate that correlations between community-weighted mean traits and environments can be unreliable estimates of the adaptive value of traits
作者: Laughlin D.C.; Strahan R.T.; Adler P.B.; Moore M.M.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2018
卷: 21, 期:3
起始页码: 411
结束页码: 421
语种: 英语
英文关键词: Community assembly ; environmental filtering ; flowering phenology ; functional traits ; plant demography ; soil C : N ratio ; species interactions ; specific leaf area ; specific root length
英文摘要: Correlations between community-weighted mean (CWM) traits and environmental gradients are often assumed to quantify the adaptive value of traits. We tested this assumption by comparing these correlations with models of survival probability using 46 perennial species from long-term permanent plots in pine forests of Arizona. Survival was modelled as a function of trait × environment interactions, plant size, climatic variation and neighbourhood competition. The effect of traits on survival depended on the environmental conditions, but the two statistical approaches were inconsistent. For example, CWM-specific leaf area (SLA) and soil fertility were uncorrelated. However, survival was highest for species with low SLA in infertile soil, a result which agreed with expectations derived from the physiological trade-off underpinning leaf economic theory. CWM trait–environment relationships were unreliable estimates of how traits affected survival, and should only be used in predictive models when there is empirical support for an evolutionary trade-off that affects vital rates. © 2018 John Wiley & Sons Ltd/CNRS
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107494
Appears in Collections:气候减缓与适应

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作者单位: Department of Botany, University of Wyoming, 1000 E. University Ave., Laramie, WY, United States; Southern Oregon University, Biology and Environmental Science and Policy Programs, 1250 Siskiyou Boulevard, Ashland, OR, United States; Department of Wildland Resources and the Ecology Center, Utah State University, Logan, UT, United States; School of Forestry, Northern Arizona University, Flagstaff, AZ, United States

Recommended Citation:
Laughlin D.C.,Strahan R.T.,Adler P.B.,et al. Survival rates indicate that correlations between community-weighted mean traits and environments can be unreliable estimates of the adaptive value of traits[J]. Ecology Letters,2018-01-01,21(3)
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