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Latitude, elevational climatic zonation and speciation in New World vertebrates.
Proc Biol Sci. 2012 Jan 07; 279(1726):194-201.PB

Abstract

Many biodiversity hotspots are located in montane regions, especially in the tropics. A possible explanation for this pattern is that the narrow thermal tolerances of tropical species and greater climatic stratification of tropical mountains create more opportunities for climate-associated parapatric or allopatric speciation in the tropics relative to the temperate zone. However, it is unclear whether a general relationship exists among latitude, climatic zonation and the ecology of speciation. Recent taxon-specific studies obtained different results regarding the role of climate in speciation in tropical versus temperate areas. Here, we quantify overlap in the climatic distributions of 93 pairs of sister species of mammals, birds, amphibians and reptiles restricted to either the New World tropics or to the Northern temperate zone. We show that elevational ranges of tropical- and temperate-zone species do not differ from one another, yet the temperature range experienced by species in the temperate zone is greater than for those in the tropics. Moreover, tropical sister species tend to exhibit greater similarity in their climatic distributions than temperate sister species. This pattern suggests that evolutionary conservatism in the thermal niches of tropical taxa, coupled with the greater thermal zonation of tropical mountains, may result in increased opportunities for allopatric isolation, speciation and the accumulation of species in tropical montane regions. Our study exemplifies the power of combining phylogenetic and spatial datasets of global climatic variation to explore evolutionary (rather than purely ecological) explanations for the high biodiversity of tropical montane regions.

Authors+Show Affiliations

Departamento de Ciencias Biológicas, Laboratorio de Biología Evolutiva de Vertebrados, Universidad de los Andes, Apartado 4976 Bogotá, Colombia. ccadena@uniandes.edu.coNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

21632626

Citation

Cadena, Carlos Daniel, et al. "Latitude, Elevational Climatic Zonation and Speciation in New World Vertebrates." Proceedings. Biological Sciences, vol. 279, no. 1726, 2012, pp. 194-201.
Cadena CD, Kozak KH, Gómez JP, et al. Latitude, elevational climatic zonation and speciation in New World vertebrates. Proc Biol Sci. 2012;279(1726):194-201.
Cadena, C. D., Kozak, K. H., Gómez, J. P., Parra, J. L., McCain, C. M., Bowie, R. C., Carnaval, A. C., Moritz, C., Rahbek, C., Roberts, T. E., Sanders, N. J., Schneider, C. J., VanDerWal, J., Zamudio, K. R., & Graham, C. H. (2012). Latitude, elevational climatic zonation and speciation in New World vertebrates. Proceedings. Biological Sciences, 279(1726), 194-201. https://doi.org/10.1098/rspb.2011.0720
Cadena CD, et al. Latitude, Elevational Climatic Zonation and Speciation in New World Vertebrates. Proc Biol Sci. 2012 Jan 7;279(1726):194-201. PubMed PMID: 21632626.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Latitude, elevational climatic zonation and speciation in New World vertebrates. AU - Cadena,Carlos Daniel, AU - Kozak,Kenneth H, AU - Gómez,Juan Pablo, AU - Parra,Juan Luis, AU - McCain,Christy M, AU - Bowie,Rauri C K, AU - Carnaval,Ana C, AU - Moritz,Craig, AU - Rahbek,Carsten, AU - Roberts,Trina E, AU - Sanders,Nathan J, AU - Schneider,Christopher J, AU - VanDerWal,Jeremy, AU - Zamudio,Kelly R, AU - Graham,Catherine H, Y1 - 2011/06/01/ PY - 2011/6/3/entrez PY - 2011/6/3/pubmed PY - 2012/3/17/medline SP - 194 EP - 201 JF - Proceedings. Biological sciences JO - Proc. Biol. Sci. VL - 279 IS - 1726 N2 - Many biodiversity hotspots are located in montane regions, especially in the tropics. A possible explanation for this pattern is that the narrow thermal tolerances of tropical species and greater climatic stratification of tropical mountains create more opportunities for climate-associated parapatric or allopatric speciation in the tropics relative to the temperate zone. However, it is unclear whether a general relationship exists among latitude, climatic zonation and the ecology of speciation. Recent taxon-specific studies obtained different results regarding the role of climate in speciation in tropical versus temperate areas. Here, we quantify overlap in the climatic distributions of 93 pairs of sister species of mammals, birds, amphibians and reptiles restricted to either the New World tropics or to the Northern temperate zone. We show that elevational ranges of tropical- and temperate-zone species do not differ from one another, yet the temperature range experienced by species in the temperate zone is greater than for those in the tropics. Moreover, tropical sister species tend to exhibit greater similarity in their climatic distributions than temperate sister species. This pattern suggests that evolutionary conservatism in the thermal niches of tropical taxa, coupled with the greater thermal zonation of tropical mountains, may result in increased opportunities for allopatric isolation, speciation and the accumulation of species in tropical montane regions. Our study exemplifies the power of combining phylogenetic and spatial datasets of global climatic variation to explore evolutionary (rather than purely ecological) explanations for the high biodiversity of tropical montane regions. SN - 1471-2954 UR - https://www.unboundmedicine.com/medline/citation/21632626/Latitude_elevational_climatic_zonation_and_speciation_in_New_World_vertebrates_ L2 - https://royalsocietypublishing.org/doi/full/10.1098/rspb.2011.0720?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -