Ponds are important part of urban green-blue infrastructure. They provide city dwellers with many ecosystem services, such as recreation and supporting biodiversity. Recreation, however, may conflict with supporting biodiversity. For example, fish introduced for recreational purposes can reduce the diversity of aquatic invertebrates, which in turn may limit the value of urban ponds for aquatic biodiversity conservation.
Click here for original story, Urban ponds require attention to ensure biodiversity, shows study
Source: Phys.org