Efficacy of feral pig removals at Hakalau Forest National Wildlife Refuge

Author:

Hess, Steven, Jeffrey, John J., Ball, Donna L., Babich, Lev

Title:

Efficacy of feral pig removals at Hakalau Forest National Wildlife Refuge

Periodical:

Hawaii Cooperative Studies Unit Technical Report HCSU-004

Year:

2006

Subject:

Feral ungulates Feral pig control Feral livestock Mauna Kea Hakalau Forest National Wildlife Refuge

Summary:

We compiled and analyzed data from 1987–2004 on feral pig (Sus scrofa) management and monitoring activities at Hakalau Forest National Wildlife Refuge, a tropical montane rainforest on the island of Hawaii.These data included annual surveys of feral pig and cattle (Bos taurus) activity, the number of feral ungulates removed from closed management units, age and reproductive status from necropsies, and vegetation surveys repeated 4 times over a 16 year period. We estimated that annual removal in excess of approximately 41–43% would be necessary to affect a population decline. We evaluated control methods and found snaring to be more efficient than staff or public hunting.

URL:

http://hdl.handle.net/10790/2681

Date:

December 2006

Collection:

Monographs