Relative effects of urbanisation, deforestation, and agricultural development on mosquito communities.
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2023
- doi: 10.1007/s10980-023-01634-w
- issn: 0921-2973
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A. Perrin et al., « Relative effects of urbanisation, deforestation, and agricultural development on mosquito communities. », Serveur académique Lausannois, ID : 10.1007/s10980-023-01634-w
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Despite numerous studies that showed negative effects of landscape anthropisation on species abundance and diversity, the relative effects of urbanisation, deforestation, and agricultural development as well as the spatial extent at which they act are much less studied. This is particularly the case for mosquitoes, which are the most important arthropods affecting human health. We determined the scale of effect of these three landscape anthropisation components on mosquito abundance and diversity. We then assessed which landscape variables had the most effect as well as their independent positive or negative effects. We used mosquito data collected by Schaffner and Mathis (2013) in 16 sampling sites in Switzerland. We measured forest, urban and agricultural amounts in 485 concentric landscapes (from 150 to 5000 m radius) around each sampling site. We then identified the spatial extent at which each landscape metric best predicted abundance and diversity of mosquito species and compared the effect size of each landscape component on each response variable. In Switzerland, urbanisation and deforestation have a greater influence on mosquito diversity than agricultural development, and do not act at the same scale. Conversely, the scale of effect on mosquito abundance is relatively similar across the different landscape anthropisation components or across mosquito species, except for Culex pipiens. However, the effect size of each landscape component varies according to mosquito species. The scale of management must be selected according to the conservation concern. In addition, a multi-scale approach is recommended for effective mosquito community management. The online version contains supplementary material available at 10.1007/s10980-023-01634-w.