L-2 



LIMITING FACTOR 



A factor whose absence, or excessive concentration, 

 exerts some restraining influence upon a 

 population through incompatibility with species 

 requirements or tolerance . (See Law of the 

 Minimum , Law of Tolerance) 



LIMNETIC ZONE 



The open -water region of a lake, especially in 

 areas too deep to support rooted aquatic plants. 

 This region supports plankton and fish as the 

 principal plants and animals . (See Littoral 

 Zone) 



LIMNOLOGY 



The ecology of fresh waters . 



LITTORAL ZONE 



The shallow area that extends from shore to 

 the lakeward limit of rooted aquatic plants; 

 the shoreward region of a body of water; in 

 marine ecology , the tidal zone . (See Limnetic 

 Zone) 



LOTIC 



Pertaining to flowing waters such as streams 

 and rivers. (See Lentic) 



