Publication: Paleobiogeografía, cambios climáticos globales y macroevolución en aves no paseriformes: patrones de radiación, dispersión y adaptación durante el Cenozoico
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2016-09-01
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Universidad Complutense de Madrid
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Abstract
Desde su origen en el Jurásico, las aves adquieren una preponderancia en los ecosistemas alcanzando cerca de 10000 especies en la actualidad, una diversidad sin parangón entre los vertebrados terrestres. Desde los comienzos de las ciencias naturales, las aves fueron uno de los grupos animales más estudiados, lo que las ha llevado a ser sin duda uno de los mejor conocidos en términos de su ecología y distribución geográfica. En los últimos años, esta vasta acumulación de conocimiento ha posibilitado el surgimiento de nuevos análisis para conocer sus patrones de diversidad y las causas subyacentes a los mismos. Sin embargo, a pesar de la abundancia de trabajos relacionados con diversos aspectos de su biología y el creciente auge de la aplicación de técnicas moleculares, son pocos los trabajos que integren las diversas fuentes de información en una perspectiva macroevolutiva. Asimismo, muchos trabajos suelen considerar el registro fósil de las aves como deficiente o poco representativo, siendo también escasos los estudios paleoecológicos con implicaciones sobre la evolución de este grupo. Considerando lo anterior, esta tesis doctoral se plantea como objetivo fundamental determinar cómo los diversos patrones y procesos macroevolutivos de las aves modernas (Neornithes) han sido influidos por los cambios climáticos y procesos geológicos que han acaecido en la Tierra a lo largo del Cenozoico. Por lo tanto, el presente proyecto de tesis se constituye como un reto importante en la integración de toda la información disponible para construir un marco histórico que logre explicar procesos evolutivos de innovación adaptativa responsables de la importante disparidad ecológica que observamos actualmente en las aves...
Since their origin in the Jurassic period, birds have acquire an important role in Earth ecosystems with an outstanding diversity of near 10,000 species among modern terrestrial vertebrates. During the early history of natural sciences, birds were one of the most studied biological groups. As a result, birds are one of the best-known animal groups in terms of their ecology and geographic distribution. This vast accumulation of knowledge has enabled the emergence of new analyses to understand their diversity patterns and their underlying triggering factors. However, despite the relative abundance of studies about diverse aspects of their biology and the growing availability of molecular phylogenetic trees, we still lack comprehensive perspectives on some key aspects of their macroevolution. Also, many studies usually consider the bird fossil record as deficient or under-representative; due to this, there are few studies about paleoecology and evolutionary implications in this group. In this context, this thesis has the aim of determining the influence of past climate changes and geologic processes in the macroevolutionary patterns of modern birds lineages (Neornithes) along the Cenozoic. In addition, this thesis project represents itself a challenge in the integration of all available information to generate a historical framework and explain evolutionary key innovations that allowed the ecological disparity that we observe in living birds...
Since their origin in the Jurassic period, birds have acquire an important role in Earth ecosystems with an outstanding diversity of near 10,000 species among modern terrestrial vertebrates. During the early history of natural sciences, birds were one of the most studied biological groups. As a result, birds are one of the best-known animal groups in terms of their ecology and geographic distribution. This vast accumulation of knowledge has enabled the emergence of new analyses to understand their diversity patterns and their underlying triggering factors. However, despite the relative abundance of studies about diverse aspects of their biology and the growing availability of molecular phylogenetic trees, we still lack comprehensive perspectives on some key aspects of their macroevolution. Also, many studies usually consider the bird fossil record as deficient or under-representative; due to this, there are few studies about paleoecology and evolutionary implications in this group. In this context, this thesis has the aim of determining the influence of past climate changes and geologic processes in the macroevolutionary patterns of modern birds lineages (Neornithes) along the Cenozoic. In addition, this thesis project represents itself a challenge in the integration of all available information to generate a historical framework and explain evolutionary key innovations that allowed the ecological disparity that we observe in living birds...
Description
Tesis presentada en la Univ. Complutense de Madrid, Facultad de Ciencias Geológicas, Departamento de Paleontología, leída el 14-12-2015