Búsqueda de patrones en macroecología: la regla de Rapoport

Autores/as

  • Adriana Ruggiero Laboratorio Ecotono, Departamento de Ecología, Centro Regional Universitario Bariloche. Quintral 1250, 8400 Bariloche, Argentina.

Resumen

El efecto Rapoport propone que el tamaño de las áreas geográficas de las especies aumenta con la latitud, la altitud o la profundidad. En este trabajo, reviso la bibliografía sobre las diversas técnicas para describir este patrón y discuto tres aspectos analíticos que son cruciales para probarlo más rigurosamente: (1) la detección de artefactos metodológicos, (2) la aplicación de modelos nulos en biogeografía y (3) la aplicación del método filogenético comparativo. A partir de datos de distribución geográfica de 100 especies de tortugas americanas, muestro prácticamente la sensibilidad de los resultados a los distintos métodos de análisis. El estudio muestra el cambio de los enfoques metodológicos desde mediados de los ’90 que resultó en técnicas cada vez más complejas para analizar gradientes geográficos en el tamaño de los rangos geográficos de las especies.La aplicación simultánea de varios enfoques de análisis permite convalidar aquellas tendencias que surgen repetidamente y lleva a sospechar de aquellos “patrones” que aparecen sólo cuando se aplica una determinada metodología. Actualmente, no se considera al efecto Rapoport como una regla general verificada en la naturaleza, sino como una hipótesis que se pone a prueba, como un primer paso, al tratar de elucidar los mecanismos que explican la variaciones en el tamaño de los rangos geográficos de las especies. El trabajo incluye, además, una serie de ejercicios prácticos y preguntas para estudiantes de grado y post-grado.

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Publicado

1999-06-01

Cómo citar

Ruggiero, A. (1999). Búsqueda de patrones en macroecología: la regla de Rapoport. Ecología Austral, 9(1), 045–063. Recuperado a partir de https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1609

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