Some of our Local Projects
(Also see 'Prevent Flooding' and 'Protect Trees' under Co-Existing with Beavers)
Glenbrook Mosquito Larval Density Study, May-Oct. 2017
Friends in Glenbrook, a prestigious residential subdivision on the southeast shore of Lake Tahoe, had been monitoring beaver activity in North Canyon Creek (also called Slaughterhouse Canyon where the creek passes thru Glenbrook before entering Lake Tahoe). They contacted us when other homeowners were concerned about what they saw as overgrown vegetation and potential mosquito habitat along the creek. Our South Lake Tahoe Co-Director, Toogee Sielsch, volunteered his time and expertise for a Mosquito larval Density Study for the Glenbrook Homeowners Association (GHOA), sampling 6 sites every 2 weeks for 6 months, May to October 2017 .
(Toogee's "day job" is senior technician for El Dorado County Vector Control, the agency which monitors and controls mosquitoes and other 'vectors' of disease, so he has extensive first-hand knowledge of Tahoe watersheds.)
Contrary to popular belief, beaver ponds are not good mosquito breeding habitat - water is always moving thru and around beaver dams, and mosquitoes breed in stagnant water. In fact Toogee found that the mosquitoes in Glenbrook were breeding prolifically upstream from the beaver dams in lower Slaughterhouse Canyon, in areas not attached to any beaver ponds, instead in stagnant pools created where trees had uprooted and fallen in the winter. Toogee's expert study was included with an official environmental report of the lower watershed commissioned by GHOA. We hope that the homeowners will take note of the science, instead of going with old mistaken notions.