174 / FIELDS OF INSTRUCTION

FY 509-WOOD STRUCTURE AND PROPERTIES. 5 credits
FY 528-ADVANCED FOREST MENSURATION. 5 credits
FY 536-WATERFOWL ECOLOGY. 5 credits
FY 550-METHODS IN NATURAL RESOURCE INTERPRETATION. 4 credits
FY 560-RANGE ECOSYSTEM MANAGEMENT. 5 credits
FY 561-RANGE ECOSYSTEM PLANNING. 4 credits
 GRADUATE COURSES
FY 600-RESEARCH PROBLEMS IN FORESTRY. 3 to 9 credits
 Problems in one or more of the following fields of forestry: economics, manage-
ment, pathology, policy, recreation, silviculture, tree physiology. May be repeated
with change of content up to a maximum of 12 credits.
FY 603-RESEARCH PROBLEMS IN WOOD UTILIZATION. 3 to 9 credits
 May be repeated with change of content up to a maximum of 9 credits.
FY 605-RESEARCH METHODS IN WILDLIFE ECOLOGY. 4 credits
 Field and laboratory procedures used in wildlife research.
FY 606-RESEARCH PROBLEMS IN WILDLIFE ECOLOGY. 3 to 9 credits
 May be repeated with change of content up to a maximum of 9 credits.
FY 611-SEMINAR. 1 credit
 Subjects in natural resource areas such as wildlife and forest ecology; physi-
ology, soils, recreation, economics; wood properties and uses. Current research and
literature are stressed. May be repeated with change of content up to a maximum of
3 credits. This course is graded on an S/U basis.
FY 612-TOPICS IN FORESTRY. 1 to 5 credits
 Selected topics in the forest sciences and the multiple-use management of forest
land for timber production, wildlife, and recreation. May be repeated with change
of content up to a maximum of 9 credits.
FY 614-NATURAL RESOURCES COLLOQUIUM. 0 to 1 credit
 Interdisciplinary discussions of topics of current interest relating to renewable
natural resources and environmental quality. May be repeated. (Students making
scheduled presentations may register for 1 credit; others register for zero credit.)
FY 615-FOREST AND RANGE WILDLIFE ECOLOGY 1. 4 credits
 Major ecosystems in the U.S. for forest and range animals. Plant and animal
components and their relation to reproductive patterns and factors controlling wild
animal populations.
FY 616-FOREST AND RANGE WILDLIFE ECOLOGY 2. 4 credits
 Continuation of FY 615.
FY 618-TROPICAL FORESTRY. 4 credits
 Prerequisite: FY 403. Forests of the tropics, climatic influences, local laws
and customs affecting forestry practice, multiple-use implications, wood properties
and uses in relation to forest development, forest types and management; stress
on American tropics.
FY 619-TROPICAL FOREST SCIENCE. 12 credits
 Prerequisite: Approval by Director of School of Forest Resources and Con-
servation and by Organization for Tropical Studies. Limit: 12 participants. Eight
weeks in the principal forest types of Central America. Offered spring quarter
as part of the program of O.T.S.
FY 620-ADVANCED PHYSIOLOGY OF FOREST TREES. 3 credits
 Prerequisite: BTY 515. Factors influencing forest tree and stand energy bal-