00972nam a2200145 a 450000100080000000500110000800800410001902000180006010000210007824500580009926000350015730000100019252006110020265000130081312616071993-05-25       1969    bl uuuu      00u1 u    #d  a0-12-713450-61 aDYNE, G. M. Van.  aThe ecosystem concept in natural resource management.  aNew York: Academic Pressc1969  a383p.  aThe natural resource ecosystem; Historical development of the ecosystem concept; Procedures for study of grassland ecosystems; The Watershed-ecosystem concept and studies of nutrient cycles; A study of an ecosystem; The arctic tundra; Ecosystem concepts in natural resource management fields; Range management viewed in the ecosystem framework; Forestry viewed in an ecosystem perspective; Ecosystem concepts in fish and game management; Ecosystem models in watershed management; Instilling the ecosystem concept in training; Implementing the ecosystem concept in training in the natural resource sciences.  aEcologia