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Title

The scaling of genetic diversity in a changing and fragmented world

Authors
Arenas, Miguel
Mona, Stefano
Trochet, Audrey
Sramkova Hanulova, Anna
Chikhi, Lounès
Rasteiro, Rita
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Published in Henle, K. Potts, S. Kunin, W. Matsinos, Y. Simila, J. Pantis, J. Grobelnik, V. Penev, L. Settele, J. Scaling in Ecology and Biodiversity Conservation: Pensoft Publishers. 2014, p. 55-60
Abstract Most species do not live in a constant environment over space or time. Their environment is often heterogeneous with a huge variability in resource availability and exposure to pathogens or predators, which may affect the local densities of the species. Moreover, the habitat might be fragmented, preventing free and isotropic migrations between local sub-populations (demes) of a species, making some demes more isolated than others. For example, during the last ice age populations of many species migrated towards refuge areas from which re-colonization originated when conditions improved. However, populations that could not move fast enough or could not adapt to the new environmental conditions faced extinctions. Populations living in these types of dynamic environments are often referred to as metapopulations and modeled as an array of subdivisions (or demes) that exchange migrants with their neighbors. Several studies have focused on the description of their demography, probability of extinction and expected patterns of diversity at different scales. Importantly, all these evolutionary processes may affect genetic diversity, which can affect the chance of populations to persist. In this chapter we provide an overview on the consequences of fragmentation, long-distance dispersal, range contractions and range shifts on genetic diversity. In addition, we describe new methods to detect and quantify underlying evolutionary processes from sampled genetic data.
Keywords ConservationGeneticsComputer simulationPopulation dynamicsFragmented habitat
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ISBN: 978-954-642-740-3
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Other version: http://ab.pensoft.net/articles.php?id=1169
Structures
Research groups Envirospace Lab
Global Resource Information Database (GRID)
Groupe Currat
Groupe Sanchez-Mazas
ISE Biodiversité
ISE Pôle Informatique environnementale
ISE Pôle Sciences
TIGERS
Unité d'anthropologie
Citation
(ISO format)
ARENAS, Miguel et al. The scaling of genetic diversity in a changing and fragmented world. In: Henle, K. Potts, S. Kunin, W. Matsinos, Y. Simila, J. Pantis, J. Grobelnik, V. Penev, L. Settele, J. (Ed.). Scaling in Ecology and Biodiversity Conservation. [s.l.] : Pensoft Publishers, 2014. p. 55-60. https://archive-ouverte.unige.ch/unige:39086

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Deposited on : 2014-08-04

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