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Full-Text Articles in Life Sciences
Tb28: Weight, Nutrient Element And Productivity Studies Of Seedlings And Saplings Of Eight Tree Species In Natural Ecosystems, Harold E. Young, Paul M. Carpenter
Tb28: Weight, Nutrient Element And Productivity Studies Of Seedlings And Saplings Of Eight Tree Species In Natural Ecosystems, Harold E. Young, Paul M. Carpenter
Technical Bulletins
The objective of this study was to obtain weight and nutrient element information on complete trees ranging from 1 to 35 ft in height above ground for the same eight species (red spruce, balsam fir, white pine, hemlock, northern white cedar, white birch, red maple and aspen) as a downward extension in size classes.
Tb27: Fresh And Dry Weight, Nutrient Elements And Pulping Characteristics Of Northern White Cedar, Thuja Occidentalis, Richard F. Dyer
Tb27: Fresh And Dry Weight, Nutrient Elements And Pulping Characteristics Of Northern White Cedar, Thuja Occidentalis, Richard F. Dyer
Technical Bulletins
Northern white cedar was selected as an eighth species for complete tree investigation of weight, nutrient elements and pulping characteristics because it comprises approximately 13% of the total softwood growing stock in Maine, but only amounts to about 2% of the total softwood timber cut for all purposes. It is hoped that the information in this bulletin will provide basic information permitting northern white cedar to become a more meaningful segment of the Maine forest economy.
Tb26: Native Bees Associated With The Low-Bush Blueberry In Maine And Eastern Canada, L. W. Boulanger, G. W. Wood, E. A. Osgood, C. O. Dirks
Tb26: Native Bees Associated With The Low-Bush Blueberry In Maine And Eastern Canada, L. W. Boulanger, G. W. Wood, E. A. Osgood, C. O. Dirks
Technical Bulletins
Native bees are particularly important pollinators of lowbush blueberry. Changes in certain cultural practices since the 1930s, however, have caused substantial reductions in the native bee populations. Recent observations, however, have shown that adjustments in these practices can have a beneficial effect on native bees with accompanying increases in their numbers. Collections of native Apoidea were made in various areas of Maine and eastern Canada from 1961 through 1965 to determine the species present and their relative abundance in blueberry fields. Of the 89 species collected, 59 were taken on lowbush blueberry blossoms, and 10 in close association with lowbush …
Tb25: The Effect Of Stand Factors On The Productivity Of Wheeled Skidders In Eastern Maine, Ernest B. Harvey Iii, Thomas J. Corcoran
Tb25: The Effect Of Stand Factors On The Productivity Of Wheeled Skidders In Eastern Maine, Ernest B. Harvey Iii, Thomas J. Corcoran
Technical Bulletins
The objective of this study was to determine what forest stand factors, as they constitute a set of operating conditions, affect skidder and skidder crew productivity and the degree of their effect.