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The tropics: cradle, museum or casino? A dynamic null model for latitudinal gradients of species diversity.
Ecol Lett. 2008 Jul; 11(7):653-63.EL

Abstract

Several ecological and evolutionary hypotheses have been proposed to explain the latitudinal diversity gradient (LDG), but a general model for this conspicuous pattern remains elusive. Mid-domain effect (MDE) models generate gradients of species diversity by randomly placing the geographic ranges of species in one- or two-dimensional spaces, thus excluding both evolutionary processes and the effect of contemporary climate. Traditional MDE models are statistical and static because they determine the size of ranges either randomly or based on empirical frequency distributions. Here we present a simple dynamic null model for the LDG that simulates stochastic processes of range shifts, extinction and speciation. The model predicts higher species diversity and higher extinction and speciation rates in the tropics, and a strong influence of range movements in shaping the LDG. These null expectations should be taken into consideration in studies aimed at understanding the many factors that generate latitudinal diversity gradients.

Authors+Show Affiliations

Instituto de Ecología, Universidad Nacional Autónoma de México, Apartado Postal 70-275, CP 04510, México DF, Mexico. arita@ecologia.unam.mxNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18445032

Citation

Arita, Héctor T., and Ella Vázquez-Domínguez. "The Tropics: Cradle, Museum or Casino? a Dynamic Null Model for Latitudinal Gradients of Species Diversity." Ecology Letters, vol. 11, no. 7, 2008, pp. 653-63.
Arita HT, Vázquez-Domínguez E. The tropics: cradle, museum or casino? A dynamic null model for latitudinal gradients of species diversity. Ecol Lett. 2008;11(7):653-63.
Arita, H. T., & Vázquez-Domínguez, E. (2008). The tropics: cradle, museum or casino? A dynamic null model for latitudinal gradients of species diversity. Ecology Letters, 11(7), 653-63. https://doi.org/10.1111/j.1461-0248.2008.01197.x
Arita HT, Vázquez-Domínguez E. The Tropics: Cradle, Museum or Casino? a Dynamic Null Model for Latitudinal Gradients of Species Diversity. Ecol Lett. 2008;11(7):653-63. PubMed PMID: 18445032.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The tropics: cradle, museum or casino? A dynamic null model for latitudinal gradients of species diversity. AU - Arita,Héctor T, AU - Vázquez-Domínguez,Ella, Y1 - 2008/04/26/ PY - 2008/5/1/pubmed PY - 2008/11/1/medline PY - 2008/5/1/entrez SP - 653 EP - 63 JF - Ecology letters JO - Ecol Lett VL - 11 IS - 7 N2 - Several ecological and evolutionary hypotheses have been proposed to explain the latitudinal diversity gradient (LDG), but a general model for this conspicuous pattern remains elusive. Mid-domain effect (MDE) models generate gradients of species diversity by randomly placing the geographic ranges of species in one- or two-dimensional spaces, thus excluding both evolutionary processes and the effect of contemporary climate. Traditional MDE models are statistical and static because they determine the size of ranges either randomly or based on empirical frequency distributions. Here we present a simple dynamic null model for the LDG that simulates stochastic processes of range shifts, extinction and speciation. The model predicts higher species diversity and higher extinction and speciation rates in the tropics, and a strong influence of range movements in shaping the LDG. These null expectations should be taken into consideration in studies aimed at understanding the many factors that generate latitudinal diversity gradients. SN - 1461-0248 UR - https://www.unboundmedicine.com/medline/citation/18445032/The_tropics:_cradle_museum_or_casino_A_dynamic_null_model_for_latitudinal_gradients_of_species_diversity_ L2 - https://doi.org/10.1111/j.1461-0248.2008.01197.x DB - PRIME DP - Unbound Medicine ER -