Do Mediterranean-type ecosystems have a common history?-Insights from the Buckthorn family (Rhamnaceae)

Título traducido de la contribución: Los ecosistemas de tipo mediterráneo tienen una historia en común? vistas desde la familia del espino cerval (Rhamnaceae)

Renske E. Onstein, Richard J. Carter, Yaowu Xing, James E. Richardson, H. Peter Linder

Resultado de la investigación: Contribución a RevistaArtículo

26 Citas (Scopus)

Resumen

Los ecosistemas de tipo mediterráneo (ETM) son notables por su riqueza de especies y su endemismo, pero los procesos que han llevado a esta diversidad siguen siendo enigmáticos. Aquí se plantea la hipótesis de que las tasas de especiación y extinción dependientes del continente han llevado a una disparidad en la diversidad entre las cinco ETM del mundo: Cabo, California, Cuenca Mediterránea, Chile y Australia Occidental. Para probar esta hipótesis, construimos un árbol filogenético para 280 especies de Rhamnaceae, estimamos tiempos de divergencia usando ocho calibraciones fósiles, y usamos métodos Bayesianos y simulaciones para probar las diferencias en las tasas de diversificación. Los linajes de Rhamnaceae en las ETM generalmente muestran tasas de diversificación más altas que en otras partes, pero la dinámica de especiación y extinción muestra un patrón de dependencia del continente. Detectamos altas tasas de especiación y extinción en California y tasas de extinción significativamente más bajas en el Cabo y Australia Occidental. La colonización independiente de cuatro de las cinco ETM puede haber ocurrido de forma concomitante en el Oligoceno/El Mioceno Temprano, pero la colonización de la cuenca mediterránea ocurrió más tarde, en el Mioceno Tardío. Esto sugiere que las radiaciones in situ de estos clados se iniciaron antes del inicio de las lluvias invernales en estas regiones. Estos resultados indican historias evolutivas independientes de Rhamnaceae en las ETM, posiblemente relacionadas con la intensidad de las oscilaciones climáticas y la historia geológica de las regiones.
Idioma originalEnglish (US)
Páginas (desde-hasta)756-771
Número de páginas16
PublicaciónEvolution
Volumen69
N.º3
DOI
EstadoPublished - mar 1 2015
Publicado de forma externa

Huella dactilar

extinction
history
colonization
Miocene
climate oscillation
endemism
basin
Oligocene
species richness
divergence
family
rate
ecosystem type
fossil
calibration
phylogenetics
rainfall
winter
simulation
continent

Citar esto

Onstein, Renske E. ; Carter, Richard J. ; Xing, Yaowu ; Richardson, James E. ; Linder, H. Peter. / Do Mediterranean-type ecosystems have a common history?-Insights from the Buckthorn family (Rhamnaceae). En: Evolution. 2015 ; Vol. 69, N.º 3. pp. 756-771.
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abstract = "{\circledC} 2015 The Author(s).Mediterranean-type ecosystems (MTEs) are remarkable in their species richness and endemism, but the processes that have led to this diversity remain enigmatic. Here, we hypothesize that continent-dependent speciation and extinction rates have led to disparity in diversity between the five MTEs of the world: the Cape, California, Mediterranean Basin, Chile, and Western Australia. To test this hypothesis, we built a phylogenetic tree for 280 Rhamnaceae species, estimated divergence times using eight fossil calibrations, and used Bayesian methods and simulations to test for differences in diversification rates. Rhamnaceae lineages in MTEs generally show higher diversification rates than elsewhere, but speciation and extinction dynamics show a pattern of continent-dependence. We detected high speciation and extinction rates in California and significantly lower extinction rates in the Cape and Western Australia. The independent colonization of four of five MTEs may have occurred conterminously in the Oligocene/Early Miocene, but colonization of the Mediterranean Basin happened later, in the Late Miocene. This suggests that the in situ radiations of these clades were initiated before the onset of winter rainfall in these regions. These results indicate independent evolutionary histories of Rhamnaceae in MTEs, possibly related to the intensity of climate oscillations and the geological history of the regions.",
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Do Mediterranean-type ecosystems have a common history?-Insights from the Buckthorn family (Rhamnaceae). / Onstein, Renske E.; Carter, Richard J.; Xing, Yaowu; Richardson, James E.; Linder, H. Peter.

En: Evolution, Vol. 69, N.º 3, 01.03.2015, p. 756-771.

Resultado de la investigación: Contribución a RevistaArtículo

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AU - Linder, H. Peter

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N2 - © 2015 The Author(s).Mediterranean-type ecosystems (MTEs) are remarkable in their species richness and endemism, but the processes that have led to this diversity remain enigmatic. Here, we hypothesize that continent-dependent speciation and extinction rates have led to disparity in diversity between the five MTEs of the world: the Cape, California, Mediterranean Basin, Chile, and Western Australia. To test this hypothesis, we built a phylogenetic tree for 280 Rhamnaceae species, estimated divergence times using eight fossil calibrations, and used Bayesian methods and simulations to test for differences in diversification rates. Rhamnaceae lineages in MTEs generally show higher diversification rates than elsewhere, but speciation and extinction dynamics show a pattern of continent-dependence. We detected high speciation and extinction rates in California and significantly lower extinction rates in the Cape and Western Australia. The independent colonization of four of five MTEs may have occurred conterminously in the Oligocene/Early Miocene, but colonization of the Mediterranean Basin happened later, in the Late Miocene. This suggests that the in situ radiations of these clades were initiated before the onset of winter rainfall in these regions. These results indicate independent evolutionary histories of Rhamnaceae in MTEs, possibly related to the intensity of climate oscillations and the geological history of the regions.

AB - © 2015 The Author(s).Mediterranean-type ecosystems (MTEs) are remarkable in their species richness and endemism, but the processes that have led to this diversity remain enigmatic. Here, we hypothesize that continent-dependent speciation and extinction rates have led to disparity in diversity between the five MTEs of the world: the Cape, California, Mediterranean Basin, Chile, and Western Australia. To test this hypothesis, we built a phylogenetic tree for 280 Rhamnaceae species, estimated divergence times using eight fossil calibrations, and used Bayesian methods and simulations to test for differences in diversification rates. Rhamnaceae lineages in MTEs generally show higher diversification rates than elsewhere, but speciation and extinction dynamics show a pattern of continent-dependence. We detected high speciation and extinction rates in California and significantly lower extinction rates in the Cape and Western Australia. The independent colonization of four of five MTEs may have occurred conterminously in the Oligocene/Early Miocene, but colonization of the Mediterranean Basin happened later, in the Late Miocene. This suggests that the in situ radiations of these clades were initiated before the onset of winter rainfall in these regions. These results indicate independent evolutionary histories of Rhamnaceae in MTEs, possibly related to the intensity of climate oscillations and the geological history of the regions.

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