8 University of Michigan 



Pondwced habitat: A thick growth of pondweeds (Pota- 

 mogeton spp.) occurs in protected places along the shores in 

 many parts of the lakes of the Cisco Lake chain. Muskrats 

 were noted in this habitat. In Gogebic Lake the exposure to 

 wave action is in most places too great for a good develop- 

 ment of pondweeds, though in the northern end of the lake 

 there are a number of widely scattered plants of this type, but 

 not forming a very well marked habitat. 



Rush habitat: On somewhat protected shoals, both in the 

 lakes of the Cisco Lake Region and in Gogebic Lake, there is 

 sometimes a growth of rushes (Juncus sp.). Along the lower 

 course of the Merriweather River, just before it enters Gogebic 

 Lake, rushes thickly cover numerous small areas. The plants 

 in both cases grow partly submerged in the water. No records 

 for mammals were obtained from this type of habitat, though 

 doubtless some of the amphibious forms frequently occur here. 



Submerged-sedge habitai: Sedges in general do not occur 

 as a definite belt about the margins of the lakes in the region 

 studied. The only place where any considerable growth of 

 sedges was noted at the edge of the water was along the lower 

 course of Merriweather River, just before it enters Gogebic 

 Lake. Here there are considerable areas of sedges partially 

 submerged by the water. No records of mammals were 

 obtained from this habitat. 



Cat-tail habitat: Under native conditions cat-tails (Typha 

 latifolia) apparently do not often form extensive habitats in 

 the region. Along the marshy borders of the lower Merri- 

 weather River at Gogebic Lake a few small patches were seen. 

 Small patches were seen in other places along railroad tracks 

 where embankments had produced small areas of marshy 

 ground. 



