نتایج جستجو برای: environmental variation

تعداد نتایج: 647156  

Journal: :Evolutionary Ecology 2023

Parasite-driven population divergence in hosts can be exacerbated by environmental factors affecting host parasitism, as well increasing sexual selection against parasitized hosts. Environmental influence parasitism directly parasite survival, and indirectly condition, which turn shape selection. To disentangle these potential alternative paths, we used a damselfly (host) - water mite (parasite...

Journal: :Integrative and comparative biology 2014
Cris C Ledón-Rettig David W Pfennig Amanda J Chunco Ian Dworkin

Understanding how populations respond to rapid environmental change is critical both for preserving biodiversity and for human health. An increasing number of studies have shown that genetic variation that has no discernable effect under common ecological conditions can become amplified under stressful or novel conditions, suggesting that environmental change per se can provide the raw material...

Hamed Babapour Maryam Shahidi Tayyeb Allahverdi Pourfallah,

Introduction The exposure of human beings to ionizing radiation from natural sources is a continuing and inescapable feature of life on earth. For most individuals, this exposure exceeds that from all man-made sources combined. Materials and Methods In this study, the annual effective dose in high level environmental background radiation areas (HLEBRAs) of northern city of Ramsar in Iran was de...

2015
Xavier Arnan Xim Cerdá Javier Retana Darren Ward

We analyze the relative contribution of environmental and spatial variables to the alpha and beta components of taxonomic (TD), phylogenetic (PD), and functional (FD) diversity in ant communities found along different climate and anthropogenic disturbance gradients across western and central Europe, in order to assess the mechanisms structuring ant biodiversity. To this aim we calculated alpha ...

Journal: :Journal of the Institute of Brewing 1982

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