Midwife toads and palmate newts are run over and their habitats are fragmented by roads in the Trubia valley (Asturias). According to a Spanish study, alleviating traffic is not enough to minimize the impact on midwife toad populations. The roads are the main cause of fragmenting the habitats of many species, especially amphibians. The toads get run over and the species loses genetic diversity as a result.
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