Branch, as time from other duties was available. Preliminary analysis of data and 

 literature has provided a clearer picture of the type of long range research program 

 required to develop a practical classification system for Ontario waters. A recom- 

 mendation for such a long-term research program has been submitted. 



HEADQUARTERS 



Headquarters staff performed administrative duties and ensured co-ordination 

 between research units of the section and between the Section and other agencies 

 in Ontario and abroad. The function greatly increases the effective amount of 

 research applied to fisheries in Ontario beyond that amount actually undertaken 

 by the Province. Staff again participated in the program of the Great Lakes Fishery 

 Commission, particularly the sea lamprey control experiment. 



FORESTRY RESEARCH 



The forest research program is accomplished by the integration of the work 

 between six research units which are located in the major forest regions of the 

 Province and five research units which are centralized at the Southern Research 

 Station at Maple. The program is described below under the headings of Site 

 Research, Silviculture Research, Nursery and Plantation Research, Tree Breeding, 

 White Pine Blister Rust, Quality Wood Studies and Economics. 



Site Research 



Land is the basic resource from which come crops of timber, agricultural 

 produce, wildlife and fish or uses such as recreation. Various types of land exist 

 which have different capabilities for the production of any specific crop. Different 

 crops have different land requirements. Consequently, the same type of land may 

 have a different rating for each crop or group of crops. 



The purpose of site research is to develop an ecological basis for efficient 

 resource management and land-use planning. The Department's site research 

 program comprises (1) the recognition and classification of the different types of 

 land (sites) in Ontario and (2) the evaluation of the potential capabilities of the 

 sites for various crops and uses, and the management problems involved in achieving 

 maximum production. 



For convenience, site research may be discussed under three main headings: 

 Regional Site Research, Factorial Site Research and Site Productivity Research. 



REGIONAL SITE RESEARCH 



Regional site research is organized within the framework of climatic regions 

 called site regions. Included in this research are (1) the recognition, classification, 

 mapping and description of the physiographic sites of a site region, (2) the deter- 

 mination of natural vegetation successions in relation to physiography within the 

 site region, (3) the initial evaluation of the potential productivity of the more 

 important sites for individual crop species, (4) the evaluation of those management 

 problems which are ecologically controlled, and (5) the evaluation of the capabilities 

 of the sites for various land uses. The mapping and description of the sites may be 

 done at various scales, and a study of the regional glacial history is often needed 

 as a background to this. 



Regional research continued this year in Northwestern, Northeastern and 

 Southeastern Ontario. A report entitled "The Land and Water Resources of the 



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