consequences and for predicting changes in marine, 

 freshwater, and terrestrial habitats. Ecological studies 

 are being carried out in many areas, particularly in 

 tropical regions. Predictive studies are being 

 conducted, such as the potential ecological effects on 

 construction of a sea-level Panama Canal. 



1971 1972 1973 



$0.20 $0.30 $0.50 



c. Stability and Interactions of Ecosystems 



Department of Commerce.— The objectives of the 

 Marine Ecosystem Analysis (MESA) program are to 

 describe, understand, and monitor the physical, 

 chemical, and biological processes of marine 

 environments; to provide information and expertise 

 required for effective management of marine areas and 

 the rational use of their associated resources; and to 

 analyze the alterations. Emphasis is directed to 

 physical/chemical and biological baseline 

 descriptions; desriptions of sediment deposition and 

 transport; effects of stress from environmental 

 alterations on marine ecosystems, with particular 

 emphasis on the living resources; and descriptions of 

 the source and fate of pollutants. 



1971 1972 1973 



$0 $0 $1.50 



Department of Defense.— Studies are carried out on 

 the evaluation of specific ecosystems of interest to the 

 military. Studies are completed on tropical evergreen 

 and semideciduous forest. 



1971 1972 1973 



$0 $0.08 $0.48 



Health, Education and Welfare.— Health Services 

 and Mental Health Administration supports grant 

 research on stimuli (visual, tactile, auditory, food, 

 water, light, photoperiod, etc) affecting or determining 

 competition, aggression, tolerance, peck order, and 

 habitat among various vertebrate animal species. 



1971 1972 1973 



$0.03 $0.03 $0.03 



Atomic Energy Commission.— Research conducted 

 at Oak Ridge National Laboratory concerns the 



58 



