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Full-Text Articles in Forest Sciences
A Study Of The Vegetation Of Southeastern Washington And Adjacent Idaho, J. E. Weaver
A Study Of The Vegetation Of Southeastern Washington And Adjacent Idaho, J. E. Weaver
Papers from the University Studies series (University of Nebraska)
Noone at all botanically inclined can travel through southeastern Washington without being impressed with the marked changes which a distance of only a few miles may show in the vegetation. Traveling eastward from a point fifty miles west of the Idaho state line, one passes from a region of scab-land sagebrush through one of rolling hills covered with bunch-grasses. Upon steadily ascending the great Columbia Plateau, the 'bunchgrasses give way to well developed prairies, and these in turn, near the Idaho line, to forests of yellow pine, Douglas fir, white fir, tamarack, and cedar. Or starting from Spokane in the …
Ecological Investigations Upon The Germination And Early Growth Of Forest Trees, Richard H. Boerker
Ecological Investigations Upon The Germination And Early Growth Of Forest Trees, Richard H. Boerker
Papers from the University Studies series (University of Nebraska)
Briefly stated the purpose of the present investigation is to inquire into the effect of the more important habitat and seed factors upon the germination and early development of certain American forest trees in control cultures in the greenhouse for the purpose of obtaining data that may be used in the ~ilvicultural management of these species.
Prefatory Note 1 / Preliminary Considerations 7 / Historical 7 / Classification and Resume of Habitat Factors 11 / The Germination Process 15 / Method of Attacking Problem at Hand 19/ Methods and Apparatus Used 2 1/ The Control of Habitat Factors 24 / …
Plant Migration Studies: Forest Trees, Charles E. Bessey
Plant Migration Studies: Forest Trees, Charles E. Bessey
Papers from the University Studies series (University of Nebraska)
It is a familiar fact that new species appear from time to time among the native plants of a region. Such newcomers turn out on examination to be new only in the sense that they have not previously lived in the region, and in every instance these new plants are found to have come from other regions where they had existed for a longer or shorter period of time. In some cases the · new species remain for a time and then disappear, or at least become inconspicuous, but more commonly they crowd in among the former plants and become …