Publication: Conservación del nicho ecológico en topillo de Cabrera (Microtus cabrerae). Aproximaciones ecológicas y filogenéticas
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2020-03-31
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Universidad Complutense de Madrid
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Abstract
En la actualidad, el cambio climático global ya es una realidad y sus efectos son patentes sobre la biodiversidad. Este nuevo escenario impone unas condiciones ante las que las especies deben adaptarse o migrar, como medio de supervivencia, o, en caso de que el cambio climático supere sus capacidades, podrían extinguirse. Bajo este marco, se incrementa el interés por esclarecer la relación entre el ambiente y la distribución de las especies, de ahí que exista un auge de los estudios de nicho ecológico. Gran parte de las aproximaciones que han abordado estos estudios se han fundamentado en la asunción de la conservación del nicho, es decir, la tendencia de los taxones a retener las condiciones de los nichos ancestrales. No obstante, la literatura ha presentado evidencias mixtas que no permiten establecer un patrón a favor de la conservación o la evolución del nicho, lo que podría ser un hándicap en las asunciones de muchos modelos predictivos. Por tanto, el estudio de la conservación del nicho requiere un enfoque amplio en el que se integren tanto trabajos a escalas temporales reducidas que focalicen sobre rasgos medibles en los organismos; como investigaciones longitudinales en las que se analizan rasgos asociados a las especies (a lo largo de filogenias) y los factores abióticos en amplios periodos de tiempo. A través de cada uno de ellos se profundiza en las diferentes dimensiones del nicho...
Currently, the global climate change is not only evident, but its implications on biodiversity are already patent. This new scenario imposes conditions in which species must adapt or migrate, as a means of survival, or, when climate change exceeds their abilities, they could be extinguished. Under this framework, the interest to clarify the relationship between the environment and the distribution of the species increases, hence there is a rise in ecological niche studies. Many of the approaches used in these studies have assumed of niche conservation, that is, the tendency of taxa to retain the conditions of ancestral niches. Nevertheless, the literature has presented mixed evidences that do not allow establishing a pattern in favour of the niche conservatism or shift, which could be a handicap in the assumptions of many predictive models. Therefore, the niche conservatism study requires a wide approach integrating both short‐term focused on measurement traits of organisms; and longitudinal investigations in which species’ traits are analyzed (throughout phylogeny), such as the abiotic factors, throughout long periods of time. Each of them delves into the different niche dimensions...
Currently, the global climate change is not only evident, but its implications on biodiversity are already patent. This new scenario imposes conditions in which species must adapt or migrate, as a means of survival, or, when climate change exceeds their abilities, they could be extinguished. Under this framework, the interest to clarify the relationship between the environment and the distribution of the species increases, hence there is a rise in ecological niche studies. Many of the approaches used in these studies have assumed of niche conservation, that is, the tendency of taxa to retain the conditions of ancestral niches. Nevertheless, the literature has presented mixed evidences that do not allow establishing a pattern in favour of the niche conservatism or shift, which could be a handicap in the assumptions of many predictive models. Therefore, the niche conservatism study requires a wide approach integrating both short‐term focused on measurement traits of organisms; and longitudinal investigations in which species’ traits are analyzed (throughout phylogeny), such as the abiotic factors, throughout long periods of time. Each of them delves into the different niche dimensions...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Ciencias Geológicas, leída el 13/12/2019