作者单位:
Northland Coll, Dept Nat Resources, 1411 Ellis Ave, Ashland, WI 54806 USA
[1]
Apostle Isl Natl Lakeshore, Natl Pk Serv, 415 Washington Ave, Bayfield, WI 54814 USA
[2]
Univ Wisconsin, Dept Forest & Wildlife Ecol, 1630 Linden Dr, Madison, WI 53706 USA
[3]
发布时间
2021-06-10