Quantitative partitioning of regional and local processes shaping regional diversity patterns

被引:38
作者
Rajaniemi, TK
Goldberg, DE
Turkington, R
Dyer, AR
机构
[1] Indiana Univ, Dept Biol, Bloomington, IN 47405 USA
[2] Univ Michigan, Dept Ecol & Evolutionary Biol, Ann Arbor, MI 48109 USA
[3] Univ British Columbia, Dept Bot, Vancouver, BC V6T 1Z4, Canada
[4] Univ British Columbia, Biodivers Res Ctr, Vancouver, BC V6T 1Z4, Canada
关键词
local vs. regional effects; productivity-diversity patterns; regional diversity patterns; species pools; species richness; temporal storage effect;
D O I
10.1111/j.1461-0248.2005.00855.x
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Much recent research explaining plant community diversity has focused on comparing the relative impacts of regional and local processes. We employed a novel analysis to quantify the effects of multiple regional and local processes on species richness, and to make quantitative comparisons of those effects across two sites that differ in plot-level species richness, productivity and environmental conditions. While abiotic stress and competition limited richness within the communities at both sites, only differences in the overall pool of species at the site, likely resulting from long-distance dispersal and climate fluctuations, explained the differences in plot-level richness between sites. Patterns in local richness may be driven by a temporal storage effect, with greater richness in the site with greater climatic variability. By identifying both the factors that impact diversity within communities and those that vary systematically across communities, our integrated approach provides a better understanding of regional diversity patterns.
引用
收藏
页码:121 / 128
页数:8
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