B:☆ WISCONSIN:Gardner Dam Scout Camp (Bay - Lakes Council , P.O.Box 267 , Appleton , WI 54912; [920] 734 - 5705) :Whitewater canoeing (激流独木舟运动) is offered if you want to have fun on the river.A 35 - mile overnight mountain biking trip is for those who prefer to stay o...
which allowed it to be transported to distant markets across the nation.The central and northern reaches of the Great Lakes states—Michigan, Wisconsin, and Minnesota—all contained extensive pine forests as well as many large rivers for floating logs into the Great Lakes, from where they were ...
On a larger scale, the presence of spatial structure in ecosystems has been shown to decrease the likelihood of catastrophic shifts between alternative stable states (e.g., clear vegetated vs. turbid states in shallow lakes; van Nes & Scheffer,2005). Since predator–prey interactions are one of...