Shore Life 75 



Study 10 

 THE LIFE OF A LAKE SHORE 



(Macroscopic) 

 Work Program: 



1. A trip to a lake for: 



A. Individual collecting by hand picking at the shore line and dip net collecting 



in the shoals. 



B. Seine net and trap collecting (the aid and equipment of professional fishermen 



should be utilized for this). 



C. Sieve net, dredge, and weed-hook collecting from a boat. 



2. A laboratory examination of the catch. 



3. Reading in the Life of Inland Waters, pp. 251 to 258; 315 to 325, 



For Record include: 



1. A sketch map of the shore visited, showing areas of emergent vegetation, of sub- 



merged weed beds, of bare bottom, etc., with depths. 



2. An annotated list of the organisms collected arranged under the following headings: 



I. Plants — with notes on size, color, relative abundance, growth habits, etc. 



A. Vascular plants: 



Emergent at shore. Floating. Rooted, with floating leaves. 

 Wholly submerged (in what succession with increasing depth). 



B. Algse — Microscopic ones, only when these appear in masses or tinge the 



water with color. 



Free floating algae. Fringing (sessile) algae. Slime-coat algae. 



II. Animals — with notes on size, color, relative abundance, feeding habits, 



stages or ages found, habitat and special adaptations or activities. 



Vertebrates — fishes and others. 



Invertebrates: 



Free swimming. 



On surface. 



On vegetation: 

 Sessile. 

 Free ranging. 

 In tubes. 



On bottom: 

 Sprawlers. 

 Burrowers that dig. 

 Burrowers that squeeze through. 

 Tube dwellers. 



