Feasibility of non-lethal approaches to protect riparian plants from foraging beavers in North America

摘要: Beavers in North America will occupy almost any wetland area containing available forage. Wetland restoration projects often provide the resources necessary for dispersing beavers to create desirable habitats. Their wide distribution and ability disperse considerable distances assure that establish themselves new wetlands. Although are a natural component of ecosystem, their foraging behaviours can be destructive. Fencing may feasible approach reduce damage small, targeted areas, textural repellents some utility protect established trees. However, these non-lethal approaches marginally effective when beaver populations become excessive. Beaver need maintained at levels permit viable colonies while still permitting plant communities flourish. This require better understanding movements, site forage selection, reproductive characteristics. is particularly true management objectives regulations prohibit removal from project sites. Rats, Mice People: Rodent Biology Management 76 additional animals invade site. coming river on vegetation surrounding demonstration Roads ponds were marked by dragging cut trees across them, evidence suggested using as corridors reach larger Tres Rios group recognised activity had suppressed, they did not consider lethal option. Capture also was possible because already occupied habitat Arizona. Placing areas would have only made vulnerable starvation, or caused displacement existing animals. The alternative options exclude plants, desirability plants Objectives this study assess the: (1) efficacy fencing frightening devices aquatic vegetation; (2) fencing, devices, repellent gnawing cottonwood trees; (3) impact other wildlife species.