Agenda - Council - 10/22/2002 - Laserfiche WebLink

Home

MinneSota DNR Nanffal Herila,,e and Nimgame Research Pro~n"am Environmental Review Fact She~-$¢ries. Blanding's Turtle. 2 I I I I I I I I ! I I RECOMMENDATIONS FOR AVOIDING AND MINIM/ZING IMPACTS These recommendations apply to typical construction projects and general Iand use witkin Blanding's turtle habitat, and are provided to help local governments, developers, contractors, and homeowners minimize or avoid detrimental impacts to Blanding's turtle populations. List 1 describes minimum measures which we recommend to prevent harm to Blanding's turtles during construction or other work within Blanding's turtle habitat. List 2 contains recommendations which offer even greater protection for Btanding's turtles populations; this list should be used in addition to thefirst list in areas which are known to be of state-wide importance to Blanding's.mrtles (contact the DNR's Natural Heritage and Nongame Research Program if you wish to determine if your project or' home is in one of these areas), or in any other area where ~eater protection for Blanding's turtles is desired. List 1. Recommendations for all areas inhabited by Blanding's turtles. List 2. Additional recommendations for areas known to be of state-wide importance to Blanding's turtles. GENERAL .- A flyer with an illustration of a Blanding's turtle should be given to all contractors working in the area. Homeowners should also be informed of the presence of Blanding's turtles in the area. ' Turtles which are in imminent danger should be moved, by hand, out of harm's way. Turtles which are not in imminent danger should be left undisturbed. If a Blanding's turtle nests in your yard, do not disturb the nest. Silt fencing should be set up to keep turtles out of construction areas. It is critical that silt fencing be removed after the area has been revegetated. Turtl.e crossing signs can be installed adjacent to road- crossing areas used by Blanding's turtles to increase public awareness and reduce road kills. Workers in the area should be aware that Blanding's turtles nest in June, generally after 4pm, and should be advised to minimize disturbance if turtles are seen. If you would like to provide more protection for a Blanding's turtle nest on your property, see "Protecting Blanding's Turtle Nests" on page 3 of this fact sheet. Construction in potential nesting areas should be limited to the period between September 15 and June 1 (tkis is the time when activity of adults and hatchlings in upland areas is at a minimum). WETLANDS small, vegetated temporary wetlands (Types 2 & 3) should not be dre.dged, deepened, filled, or converted to' storm water retennon basins (these wetlands provide important habitat during spring and summer). Wetlands should be protected from pollution; use of fertilizers and pesticides should be avoided, and run-off from lawns and streets should be controlled. Erosion should be prevented to keep sediment from reaching wetlands and lakes. Shallow portions of wetlands should not be disturbed during pr/me basking time (mid mommg'to midq afternoon in May and. June). A wide buffer Should be left along the shore to minimize human activity near wetlands (basking Blanding's turtles are more easily disturbed thanother turtle species). Wetlands. should be protected from road, lawn, and other chemical run--off by a vegetated buffer strip at least 50' wide. This area should be left unmowed and in a natural' condition. ROADS Roads should be kept to minimum standards on widths and lanes (this reduces road kills by slowing traffic and reducing the distance turtles need to cross). Roads should be ditched, not curbed or below grade. If curbs must be used, 4 inch high curbs at a 3:1 slope are preferred (Blanding's turtles have great difficulty climbing traditional curbs; curbs and below grade roads trap turtles on the road and can cause road kills). Tunnels should be considered in areas withConcentrations of turtle crossings (more than 10 turtles per year per 100 meters of road), and in areas of lower density if the level of road use would make a safe crossing impossible for turtles. Contact your DNR Reg/onal Nongame Specialist for further information on wildlife tunnels. Roads should be ditched, not curbed or below grade. · -359-