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Effects Of Urbanization On The Distribution And Abundance Of Amphibians And Invasive Species In Southern California Streams, Seth Riley, Gary Busteed, Lee Kats, Thomas Vandergon, Lena Lee, Rosi Dagit, Jacob Kerby, Robert Fisher, Raymond Sauvajot
Effects Of Urbanization On The Distribution And Abundance Of Amphibians And Invasive Species In Southern California Streams, Seth Riley, Gary Busteed, Lee Kats, Thomas Vandergon, Lena Lee, Rosi Dagit, Jacob Kerby, Robert Fisher, Raymond Sauvajot
Lee Kats
Urbanization negatively affects natural ecosystems in many ways, and aquatic systems in particular. Urbanization is also cited as one of the potential contributors to recent dramatic declines in amphibian populations. From 2000 to 2002 we determined the distribution and abundance of native amphibians and ex- otic predators and characterized stream habitat and invertebrate communities in 35 streams in an urbanized landscape north of Los Angeles (U.S.A.). We measured watershed development as the percentage of area within each watershed occupied by urban land uses. Streams in more developed watersheds often had exotic crayfish ( Procambarus clarkii) and fish, and had fewer …