The loss of sexual size dimorphism in urban populations of a widespread reptile, the European grass snake Natrix natrix
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摘要:
Cities represent a unique ecosystem dominated by humans and high-density man-made infrastructure,associated with modifications or entire loss of local habitats.Thus,urbanization constitutes a considerable challenge for wildlife,and only a minority of species is able to persist in cities (Niemel(a) et al.2011).Species that maintain populations in cities are usually characterized by significant changes in life history characteristics,population structure,and ecological relations (Niemel(a) et al.2011).