Ionizing radiation and taxonomic, functional and evolutionary diversity of bird communities

JOURNAL OF ENVIRONMENTAL MANAGEMENT

卷:220

Article

Morelli, Federico¹  Benedetti, Yanina¹  Mousseau, Timothy A.²  Moller, Anders Pape³ 

[1] Czech Univ Life Sci Prague, Fac Environm Sci, Dept Appl Geoinformat & Spatial Planning, Kamycka 129, Prague 16500 6, Czech Republic

[2] Univ South Carolina, Dept Biol Sci, Columbia, SC 29208 USA

[3] Univ Paris Saclay, Univ Paris Sud, Ecol Systemat Evolut, CNRS,AgroParisTech, F-P-91405 Orsay, France

关键词: Ionizing radiation;    Bird community;    Evolutionary distinctiveness;    Forest coverage;    Functional diversity;    Species richness;   

DOI  :  10.1016/j.jenvman.2018.05.032

来源: Elsevier

【 摘 要 】

Ionizing radiation from nuclear accidents at Chernobyl, Fukushima and elsewhere has reduced the abundance, species richness and diversity of ecosystems. Here we analyzed the taxonomic, functional and evolutionary diversity of bird communities in forested areas around Chernobyl. Species richness decreased with increasing radiation, mainly in 2007. Functional richness, but not functional evenness and divergence, decreased with increasing level of ionizing radiation. Evolutionary distinctiveness of bird communities was higher in areas with higher levels of ionizing radiation. Regression tree models revealed that species richness was higher in bird communities in areas with radiation levels lower than 0.7 mu Sv/h. In contrast, when radiation levels were higher than 16.67 mu Sv/h, bird species richness reached a minimum. Functional richness was affected by two variables: Forest cover and radiation level. Higher functional richness was found in bird communities in areas with forest cover lower than 50%. In the areas with forest cover higher than 50%, the functional richness was lower when radiation level was higher than 0.91 mu Sv/h. Finally, the average evolutionary distinctiveness of bird communities was higher in areas with forest cover exceeding 50%. These findings imply that level of ionizing radiation interacted with forest cover to affect species richness and its component parts, i.e. taxonomic, functional, and evolutionary diversity.

【 授权许可】

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