Effects of competition, predation, and dispersal on species richness at local and regional scales

被引:164
|
作者
Shurin, JB
Allen, EG
机构
[1] Univ Chicago, Dept Ecol & Evolut, Chicago, IL 60637 USA
[2] Univ Chicago, Comm Evolutionary Biol, Chicago, IL 60637 USA
来源
AMERICAN NATURALIST | 2001年 / 158卷 / 06期
关键词
coexistence; dispersal; keystone predators; local and regional processes; metapopulation;
D O I
10.1086/323589
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
This study explores the consequences of predator-mediated coexistence among competitors for patterns of incidence and diversity at local and regional scales. We develop a model that draws on elements of metapopulation models of competitors and food chains by allowing competitors to coexist locally in the presence of predators but not in their absence. The model predicts that predators promote regional coexistence by greatly expanding the range of conditions under which two competitors persist at equilibrium. Predators could have positive or negative effects on mean local diversity within the region depending on their dispersal rates, those of the prey, and their effects on prey extinction rates. The presence of predators increased the abundance of inferior competitors, thereby expanding the conditions for positive relationships between local and regional diversity. The model also predicted positive correlations between local diversity of predators and prey. These predictions were supported by patterns of phytoplankton, zooplankton, and fish species richness among lakes. The model may help to resolve the apparent contrast between linear patterns of local and regional richness and experimental evidence for strong invasion resistance and rapid dispersal in zooplankton.
引用
收藏
页码:624 / 637
页数:14
相关论文
共 50 条
  • [1] Species richness of coral assemblages: Detecting regional influences at local spatial scales
    Karlson, RH
    Cornell, HV
    [J]. ECOLOGY, 2002, 83 (02) : 452 - 463
  • [2] Connecting local and regional scales with stochastic metacommunity models: Competition, ecological drift, and dispersal
    Lerch, Brian A.
    Rudrapatna, Akshata
    Rabi, Nasser
    Wickman, Jonas
    Koffel, Thomas
    Klausmeier, Christopher A.
    [J]. ECOLOGICAL MONOGRAPHS, 2023, 93 (04)
  • [3] Species richness-productivity relationships of tropical terrestrial ferns at regional and local scales
    Kessler, Michael
    Salazar, Laura
    Homeier, Juergen
    Kluge, Juergen
    [J]. JOURNAL OF ECOLOGY, 2014, 102 (06) : 1623 - 1633
  • [4] Neotropical forest bird communities: A comparison of species richness and composition at local and regional scales
    Blake, John G.
    [J]. CONDOR, 2007, 109 (02): : 237 - 255
  • [5] Using the Dispersal Assembly Hypothesis to predict local species richness from the relative abundance of species in the regional species pool
    Schoolmaster, D. R., Jr.
    [J]. COMMUNITY ECOLOGY, 2001, 2 (01) : 35 - 40
  • [6] Using the Dispersal Assembly Hypothesis to predict local species richness from the relative abundance of species in the regional species pool
    D. R. Schoolmaster
    [J]. Community Ecology, 2001, 2 : 35 - 40
  • [7] The interactive effects of competition and predation risk on dispersal in an insect
    Baines, Celina B.
    McCauley, Shannon J.
    Rowe, Locke
    [J]. BIOLOGY LETTERS, 2014, 10 (06)
  • [8] Trends of biodiversity and species richness at local and global scales
    Fuentes, Marcelino
    [J]. BIOLOGICAL CONSERVATION, 2018, 222 : 286 - 286
  • [9] REGIONAL AND LOCAL SPECIES RICHNESS IN CHAMAELENOID LIZARDS
    HEBRARD, JJ
    [J]. AMERICAN ZOOLOGIST, 1987, 27 (04): : A161 - A161
  • [10] Competition intensity at local versus regional spatial scales
    Ladd, B.
    Pepper, D. A.
    Bonser, S. P.
    [J]. PLANT BIOLOGY, 2010, 12 (05) : 772 - 779