Knapp, J.J.; P.T. Schuyler, K.N. Walker, N.L. Macdonald,Island and invasives: S.A. Morrison. Benefieradication ts of supporting andinvasive management plant and animal eradication projects with helicopters Benefits of supporting invasive plant and animal eradication projects with helicopters J. J. Knapp 1, P. T. Schuyler 2, K. N. Walker 1, N. L. Macdonald 1, and S. A. Morrison 3 1Native Range, Inc., 1746-FS. Victoria Avenue, #378, Ventura, California, 93003, USA. <
[email protected]>. 2525 Lorraine Ave. Santa Barbara, California, 93110, USA. 3The Nature Conservancy, 201 Mission Street, 4 th Floor, San Francisco, California, 94105, USA. Abstract To eradicate invasive alien species from islands, land managers must have the ability to: detect all individuals, remove all individuals, outpace reproduction, and commit adequate resources to ensure project completion. Any inability to meet these criteria – whether due to technical, fi nancial or political factors – can fate a project to failure. Here, we discuss how helicopter-based methods can increase the likelihood of meeting eradication success criteria, while at the same time increasing effective use of limited resources and enhancing personnel safety. We examine the effi ciency and effectiveness of ground-based and aerial-based eradication methods used to eradicate feral pigs and control a suite of invasive plants to zero density on two islands in southern California, USA: Santa Catalina Island and Santa Cruz Island. This study highlights numerous advantages of using an intensive, systematic aerial approach in eradication efforts, as compared to more traditional ground-based methods. Keywords: Channel Islands, feral pig, Sus scrofa , eradicate, effectiveness, systematic approaches INTRODUCTION Invasive alien species pose a signifi cant and increasing relatively few visitors.