Hawaiian terrestrial snails are quickly going extinct due to depredation by introduced predators including rats, Jackson’s chameleons, and the rosy wolf snail. Currently, the only reliable way to protect populations in the field is to construct predator exclusion fences. This project includes constructing three small fence units at three remote sites near the summit in the Northern Ko`olau Mountains on O`ahu. Total fence length of all three units combined is approximately 800 ft. in length. Each of the proposed fence units will be between 250-275 feet in circumference and will be made entirely of plastic lumber with HDPE geomembrane as the siding. The basic design of the fence includes a solid wall with a hood to exclude rats. Three rosy wolf snail barriers will be attached to the exterior of the wall consisting of two flared 15° angled flanges and an array of copper bands, to be electrified by DOFAW after completion of fence construction.
