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University of Nebraska - Lincoln

Managing Vertebrate Invasive Species

Alien species

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Environmental And Economic Costs Of Vertebrate Species Invasions Into The United States, David Pimental Aug 2007

Environmental And Economic Costs Of Vertebrate Species Invasions Into The United States, David Pimental

Managing Vertebrate Invasive Species

The more than 50,000 species of plants, animals, and microbes introduced into the United States (US) cause more extinction of native species than most any other threat and cause more than $120 billion in damages and control costs each year. In particular, invasive mammals and birds cause major environmental and economic losses totaling about $46 billion per year in damage and control costs per year. Feral cats, rats, and hogs are especially serious pests. Pigeons and starlings are a major concern in cities and US agriculture. Prevention and management strategies will be discussed.

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Using Pathway Analysis To Inform Prevention Strategies For Alien Reptiles And Amphibians, Fred Kraus Aug 2007

Using Pathway Analysis To Inform Prevention Strategies For Alien Reptiles And Amphibians, Fred Kraus

Managing Vertebrate Invasive Species

Alien reptiles and amphibians are deserving of greater attention that has hitherto been bestowed upon them by managers and researchers. Eradication or control of established taxa will generally be infeasible, leaving prevention of introductions as the primary management tool for controlling herpetological invasions. I analyzed >5,700 introductions of alien reptiles and amphibians worldwide to obtain the pathway information necessary for design of informed prevention programs. Six pathways account for the large majority of introductions: accidental introductions via cargo and the nursery plant trade and intentional introductions for biocontrol, food use, the pet trade, and aesthetic purposes. Pathway importance varies taxonomically, …

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