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Articles 2371 - 2400 of 2654
Full-Text Articles in Life Sciences
Terrestrial Ecology Of The Dickey-Lincoln School Lakes Project, Corps Of Engineers, New England Division, Environmental Research & Technology, Inc
Terrestrial Ecology Of The Dickey-Lincoln School Lakes Project, Corps Of Engineers, New England Division, Environmental Research & Technology, Inc
Dickey-Lincoln School Lakes Project
This introduction of the St. John River watershed is situated in a transitional zone between the Boreal Forest Formation and the Eastern Deciduous Forest Formation. Second-growth forests representative of these two ecosystems cover extensive areas of the project site. The boreal forest forms a broad transcontinental belt in northern North America and Eurasia, with southern montane extensions. This northern forest is characterized by evergreen, coniferous trees, predominately spruce-fir The eastern deciduous forest, composed of broad-leaved hardwoods, extends throughout the eastern United States except Florida (Dasmann, 1968; Oosting, 1956).
[Letter From New England Regional Director To Division Engineer, New England Division, U.S. Army Corps Of Engineers], U.S. Fish And Wildlife Service
[Letter From New England Regional Director To Division Engineer, New England Division, U.S. Army Corps Of Engineers], U.S. Fish And Wildlife Service
Dickey-Lincoln School Lakes Project
The results of appraisals conducted jointly by this Service, the Maine Department of Inland Fisheries and Wildlife, and your agency concerning bald eagle, osprey, peregrine falcon, and great blue heron.
Water Resources Development Project, Saint John River Basin : Dickey-Lincoln School Lakes, Maine, U.S.A. And Quebec, Canada : Design Memorandum No. 2 : Hydrology And Hydraulic Analysis, Section Iv - Lincoln School Dam-Spillway Design Flood, Department Of The Army, New England Division, Corps Of Engineers
Water Resources Development Project, Saint John River Basin : Dickey-Lincoln School Lakes, Maine, U.S.A. And Quebec, Canada : Design Memorandum No. 2 : Hydrology And Hydraulic Analysis, Section Iv - Lincoln School Dam-Spillway Design Flood, Department Of The Army, New England Division, Corps Of Engineers
Dickey-Lincoln School Lakes Project
The first of four sections comprising Design Memo-randum No. 2. The other sections are: II - Dickey Dam - Spillway Design Flood, III - Lincoln School Dam - Spillway Design Flood and IV - Flood Analysis and Reservoir Regulation. la section I, hydro-logic studies will be confined generally to the drainage area of the Saint John River above the gaging station at Fort Kent, Maine. The purpose of section I is to present the climatological and streamflow data for the Saint John River above Fort Kent in order to establish hydrologic criteria for the design of the Dickey and Lincoln …
Report On Rare And Unusual Plant Species Within The Dickey-Lincoln School Lakes Project Area, Charles D. Richards, United States Army Corps Of Engineers, New England Division
Report On Rare And Unusual Plant Species Within The Dickey-Lincoln School Lakes Project Area, Charles D. Richards, United States Army Corps Of Engineers, New England Division
Dickey-Lincoln School Lakes Project
Report on rare and unusual plant species within the Dickey-Lincoln School Lakes project area. New England.
Tb74: Eastern Spruce Flakeboard Resin Distribution And Decorative Panel Evaluation, Robert A. Kelly, Norman P. Kutscha, Craig E. Shuler
Tb74: Eastern Spruce Flakeboard Resin Distribution And Decorative Panel Evaluation, Robert A. Kelly, Norman P. Kutscha, Craig E. Shuler
Technical Bulletins
A standard urea-formaldehyde liquid adhesive was used in the manufacture of eastern spruce flakeboard panels. The resin application system, resin viscosity, furnish moisture content, and application period were all conducive to the formation of a fine resin spray. The average resin droplet diameter was approximately 20 microns, while the average resin are a coverage, over the entire wood furnish, was 8.05%. Resin distribution in the microscopically observed panel specimens appeared in the form of “spot-welds” and intermittent glue lines. The use of various histological and commercial stains was effective in producing decorative panels.
Tb76: Production Of Entomophthora Resting Spores For Biological Control Of Aphids, R. S. Soper, F. R. Holbrook, I. Majachrowicz, C. C. Gordon
Tb76: Production Of Entomophthora Resting Spores For Biological Control Of Aphids, R. S. Soper, F. R. Holbrook, I. Majachrowicz, C. C. Gordon
Technical Bulletins
This publication describes a technique for producing Entomophthora resting spores for biological control of aphids. The report includes information on media preparation and inoculation and extraction and purification of the resting spores.
Tb78: Food Habits And Body Measurements Of Mourning Doves In Southwestern Maine, Sanford D. Schemnitz
Tb78: Food Habits And Body Measurements Of Mourning Doves In Southwestern Maine, Sanford D. Schemnitz
Technical Bulletins
This study presents the first published information on the food in the crops of Maine mourning doves collected at the Western Maine Forest Nursery at Fryeburg. The main food was conifer seed (54. 6 percent volume). Red and white pine totaled 37. 6 percent of foods consumed. Corn and goosefoot comprised an additional 30.9 percent by volume in the diet. The heavy use of conifer seed by doves in a nursery suggests the need to treat the seed with a repellent. Maine doves were longer in total length than doves from New York and several southern states. The sex ratio …
Scope Of Work, Environmental Impact Statement For The Dickey-Lincoln School Lakes Project, New England Division, United States Army Engineer Division, United States Army Corps Of Engineers
Scope Of Work, Environmental Impact Statement For The Dickey-Lincoln School Lakes Project, New England Division, United States Army Engineer Division, United States Army Corps Of Engineers
Dickey-Lincoln School Lakes Project
Revised draft combines data previously published in two separate impact statements prepared by the corps relating to the dams, reservoirs and power plants and by the U. S. Department of Energy for transmission facilities to link the St. John River development to the New England power grid. The latter agency is responsible for the marketing and distribution of power generated at federally-financed installations.
Hydroelectric Power Potential At Corps Of Engineers Projects : A Report, Ralph L. Trisko, United States. Army., Institiute For Water Resources
Hydroelectric Power Potential At Corps Of Engineers Projects : A Report, Ralph L. Trisko, United States. Army., Institiute For Water Resources
Dickey-Lincoln School Lakes Project
This report completes phase one of the study. It is intended to fill the need, recognized at the outset, for a broad framework within which subsequent more detailed study at the project level might take place. It is an overview of physical hydropower potential in the context of energy and water resources and demands, energy economics, and federal policy, organization, and practices pertaining to hydropower development and marketing.
Tb73: Estimating Heat Consumption In Kiln Drying Lumber, James E. Shottafer, Craig E. Shuler
Tb73: Estimating Heat Consumption In Kiln Drying Lumber, James E. Shottafer, Craig E. Shuler
Technical Bulletins
This report presents one method for systematically estimating heat consumption in a dry kiln. The basis for evaluating heat use is presented along with a description of the specific elements of heat consumption. All necessary physical relationships are described in detail for those who wish to employ them. One point of interest here is the fact that the system described will readily lend itself to the construction of a mathematical model.
Tb72: Selection For Type And Milk Production In Dairy Cattle, Howard C. Dickey
Tb72: Selection For Type And Milk Production In Dairy Cattle, Howard C. Dickey
Technical Bulletins
This publication discusses milk production in dairy cattle, then explains type improvement, then describes one can select for both type and production with the aid of a chart.
Tb70: Physical And Chemical Changes Associated With The Development Of The Lowbush Blueberry Fruit Vaccinium Angustifolium Ait., Amr A. Ismail, Walter J. Kender
Tb70: Physical And Chemical Changes Associated With The Development Of The Lowbush Blueberry Fruit Vaccinium Angustifolium Ait., Amr A. Ismail, Walter J. Kender
Technical Bulletins
The objective of this investigation was to determine the growth characteristics, changes in the soluble solids, pH, and titratable acidity for the purpose of defining and describing stages in the growth of the blueberry fruit.
Tb71: Fiber Analysis And Distribution In The Leaves, Juvenile Stems And Roots Of Ten Maine Trees And Shrubs, Fay Hyland
Tb71: Fiber Analysis And Distribution In The Leaves, Juvenile Stems And Roots Of Ten Maine Trees And Shrubs, Fay Hyland
Technical Bulletins
The value of woody plants in the paper-making industry is unquestioned. As our present supply of the readily accessible and more valuable species of this natural resource dwindles, it may become necessary to use shrubs and waste from logging operations. This study focuses on the juvenile wood eastern white pine, red spruce, balsam fir, eastern hemlock, gray birch, red maple, quaking aspen, pin cherry, speckled alder, and slender willow.
Tb78: Sequential Surveys Of The Pine Leaf Chermid, Pineus Pinifoliae, John B. Dimond
Tb78: Sequential Surveys Of The Pine Leaf Chermid, Pineus Pinifoliae, John B. Dimond
Technical Bulletins
Sequential survey procedures are described for classifying damage to white pine produced by the pine leaf chermid. Damage classes are based on degree of needle stunting, and field procedures for making measurements are given. Survey procedures are also presented for classifying infestation levels of two stages of the insect. These allow prediction of damage levels before damage occurs.
Tb67: Pilot Study Of The Use Of Pulpwood Chipping Residue For Producing Particleboard In Maine, Craig E. Shuler
Tb67: Pilot Study Of The Use Of Pulpwood Chipping Residue For Producing Particleboard In Maine, Craig E. Shuler
Technical Bulletins
The study was conducted at the School of Forest Resources, University of Maine at Orono, as part of an extended project on the use of northeastern species for particleboard. This particular investigation served as a means to establish a laboratory board-production system, and to gather useful information regarding a specific wood resource of the state of Maine.
Tb65: The Commercial Use Of Puckerbrush Pulp, Andrew J. Chase, Fay Hyland, Harold E. Young
Tb65: The Commercial Use Of Puckerbrush Pulp, Andrew J. Chase, Fay Hyland, Harold E. Young
Technical Bulletins
This study investigates the potential of several local puckerbrush or weed trees and shrubs as sources of fiber for papermaking. Four different pulping processes were used (sulfate, magnesium bisulfite, neutral sulfite semichemical, and cold caustic) with six puckerbrush species (alder, gray birch, red maple, pin cherry, aspen, and willow). Mixtures of puckerbrush species, and commercial chip-puckerbrush species mixtures were pulped by the sulfate process with the objective of producing a pulp that would be suitable for fine-grade papers. The results produced a good grade of bleachable pulp with adequate physical characteristics for most fine paper grades. The other three pulping …
Tb63: Variation In Foliar Nutrient Concentrations In Red Spruce, C. E. Schomaker
Tb63: Variation In Foliar Nutrient Concentrations In Red Spruce, C. E. Schomaker
Technical Bulletins
Red spruce (Picea rubens Sarg.) is an important pulpwood species in northern New England and Canada. Management objectives favor this species and the closely related black spruce (Picea mariana Mill. BSP) on many sites. Foliar nutrient concentrations of unfertilized, economically mature, red spruce trees growing on four different sites and over two- and three-year periods are presented here and compared to foliar concentrations reported by other scientists.
Tb64: Low Temperature Injury To Apple Trees In Maine, M. T. Hilborn, W. C. Stiles
Tb64: Low Temperature Injury To Apple Trees In Maine, M. T. Hilborn, W. C. Stiles
Technical Bulletins
This technical bulletin presents an overview of low temperature injury to apple trees. They describe the winter killing of apple trees in Maine in 1933-34 and describe hardy trunk forming stocks. They also report on a trial orchard at Highmoor Farm for trunk-forming stock and the influence of stock-scion combination on hardiness. They end with five recommendations for apple growers.
B704: Costs And Returns On Maine Apple Farms, Wilbert C. Geiss Jr., Reginald K. Harlan
B704: Costs And Returns On Maine Apple Farms, Wilbert C. Geiss Jr., Reginald K. Harlan
Bulletins
The purpose of this study was to collect data relative to the costs of growing, harvesting, storing, and packing apples in Maine, to analyze the factors affecting costs and returns, and to provide Maine apple producers with current information for adjusting farm resources to achieve optimum efficiency in production under rapidly changing economic conditions.
This study was undertaken to determine the profitability of Maine apple farms, and to determine the current size and scope of the Maine apple industry. The results and implications of this study should be useful to all concerned with the apple industry in Maine and New …
A Study Of The Dickey-Lincoln Hydroelectric Project And Its Impact On The Resources Of The Upper Saint John River Valley, Rosemary M. Manning, Sierra Club, New England Chapter
A Study Of The Dickey-Lincoln Hydroelectric Project And Its Impact On The Resources Of The Upper Saint John River Valley, Rosemary M. Manning, Sierra Club, New England Chapter
Dickey-Lincoln School Lakes Project
This report was under-taken primarily to evaluate the impact that the construction of the Dickey-Lincoln project would have upon the resources of the Upper St. John River, and to examine the assertion that the Dickey-Lincoln project constitutes a wise use of the public's environmental and economic resources. Since the case that has been made for the construction of the Dickey-Lincoln project rest primarily on the justification of the project in economic terms, this aspect of the project proposal will be intensively explored.
Tb62: The Suitability Of Using Fluorescence Microscopy For Studying Lignification In Balsam Fir, Norman P. Kutscha, Raymond R. Mcormond
Tb62: The Suitability Of Using Fluorescence Microscopy For Studying Lignification In Balsam Fir, Norman P. Kutscha, Raymond R. Mcormond
Technical Bulletins
This publication discusses the advantages and disadvantages of primary and secondary fluorescence when examining lignification in balsam fir.
Tb51: Seasonal History Of The Buckthorn Aphid And Suitability Of Alder-Leaved Buckthorn As A Primary Host In Northeastern Maine, W. A. Shands, Geddes W. Simpson
Tb51: Seasonal History Of The Buckthorn Aphid And Suitability Of Alder-Leaved Buckthorn As A Primary Host In Northeastern Maine, W. A. Shands, Geddes W. Simpson
Technical Bulletins
The buckthorn aphid, Aphis nasturtii Kaltenbach, is one of four species of aphids commonly infesting potatoes, Solarium tuberosum L., in Maine. It is widely distributed over the northeastern part of the United States and is a pest of potatoes elsewhere in the world, including parts of England and Europe. The other three species of potato-infesting aphids in Maine are the green peach aphid, Myzus persicae (Sulzer), the potato aphid, Macrosiphum euphorbiae (Thomas ) and the foxglove aphid, Acyrthosiphon solani (Kaltenbach).
Tb44: The Fluorescent Antibody Technique In The Diagnosis Of Avian Encephalomyelitis, Louis Van Der Heide
Tb44: The Fluorescent Antibody Technique In The Diagnosis Of Avian Encephalomyelitis, Louis Van Der Heide
Technical Bulletins
This publication provides an overview of avian encephalomyelitis including a description of the disease and its geographical distribution. The authors also discuss various methods for diagnosing the disease and losses in egg production during outbreaks.
Tb59: Soil Characteristics Of Nesting Sites Of Solitary Bees Associated With The Low-Bush Blueberry In Maine, E. A. Osgood
Tb59: Soil Characteristics Of Nesting Sites Of Solitary Bees Associated With The Low-Bush Blueberry In Maine, E. A. Osgood
Technical Bulletins
During the course of ecological studies of certain native bees which pollinate the low-bush blueberry in Maine, it was noted that several species chose particular areas in which to construct their nests. It is the object of this bulletin to describe the characteristics of these chosen sites and to compare them to areas that are not conducive to nesting. This study was carried out in Deblois, Washington County, on areas known as "blueberry-barrens." The predominant soil in the area is Colton gravelly sandy loam.
Tb58: Further Evaluation Of Entomogenous Fungi As A Biological Agent Of Aphid Control In Northeastern Maine, W. A. Shands, Geddes W. Simpson, I. M. Hall, Corinne C. Gordon
Tb58: Further Evaluation Of Entomogenous Fungi As A Biological Agent Of Aphid Control In Northeastern Maine, W. A. Shands, Geddes W. Simpson, I. M. Hall, Corinne C. Gordon
Technical Bulletins
An intensive survey and study were made each year from 1952 through 1962 to determine seasonal abundance of living and dead diseased aphids by species on potatoes and to collect many of the infected specimens for exact diagnosis. Results of the study disclosed that the action of entomogenous fungi was outstanding in reducing the size of aphid populations on potatoes. This technical bulletin reports on the results of the continuance of the study from 1963 through 1969. However, the collection of dead, diseased aphids throughout the summer was done only from 1963 through 1966 ; thereafter, diagnosis was limited to …
Tb60: Survey Of Internal Parasites Of Potato-Infesting Aphids In Northeastern Maine, 1963 Through 1969, W. A. Shands, Geddes W. Simpson, Corinne C. Gordon
Tb60: Survey Of Internal Parasites Of Potato-Infesting Aphids In Northeastern Maine, 1963 Through 1969, W. A. Shands, Geddes W. Simpson, Corinne C. Gordon
Technical Bulletins
This technical bulletin reports the results of an annual survey conducted from 1963 through 1969 of parasitized aphids on potatoes in northeastern Maine, chiefly on Aroostook Farm, near Presque Isle. The authors discuss the role of parasites in control of aphids on potato plants not treated with insecticides and list the primary parasites and hyperparasites reared from potato-infesting species of aphids collected during the survey.
Tb61: Properties Of Plantation Grown Red Pine Related To Its Utilization, James E. Shottafer, Norman P. Kutscha, Richard A. Hale
Tb61: Properties Of Plantation Grown Red Pine Related To Its Utilization, James E. Shottafer, Norman P. Kutscha, Richard A. Hale
Technical Bulletins
This report describes a study that was conducted to evaluate the static bending and compression parallel to the grain properties evident within and among material from 19 plantation-grown red pine trees, and to determine what effect position in the tree, latewood percentage, fibril angle, specific gravity and rate of growth might have on these mechanical properties. The second phase of the study was conducted concurrently with the first to determine what effect position in the tree and specific gravity might have on the characteristics of red pine Kraft pulp. A third investigation evaluated the effect of three dry kiln schedules …
Tb56: Effects Of Differing Abundance Levels Of Aphids And Of Certain Virus Diseases Upon Yield And Virus Disease Spread In Potatoes, W. A. Shands, Geddes W. Simpson, Barbara A. Seaman, F. S. Roberts
Tb56: Effects Of Differing Abundance Levels Of Aphids And Of Certain Virus Diseases Upon Yield And Virus Disease Spread In Potatoes, W. A. Shands, Geddes W. Simpson, Barbara A. Seaman, F. S. Roberts
Technical Bulletins
In eight years during the period 1944 to 1954, a study was conducted on Aroostook Farm, Presque Isle, Maine, to develop ways of obtaining and maintaining varying levels of aphid abundance on potato plants. Methods for measuring aphid abundance and their effects on yield and virus transmission were devised. These techniques were then used to determine the effects of varying all-season levels of abundance of the aphids and of virus reservoirs of two potat o diseases upon yield of potatoes and the spread of leaf roll and spindle tuber in four varieties of potatoes. The results of that study are …
Tb57: Effects Of Cultural Methods For Controlling Aphids On Potatoes In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. J. Murphy
Tb57: Effects Of Cultural Methods For Controlling Aphids On Potatoes In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. J. Murphy
Technical Bulletins
A study was conducted at Aroostook Farm, near Presque Isle, Maine, 1954 to 1958, inclusive, to determine the effects of certain agronomic cultural practices designed to delay emergence of potato plants and to decrease their exposure to infestation by spring migrants. This technical bulletin reports the results of that study.
Tb55: Food Lists Of Hippodamia (Coleoptera: Coccinellidae), W. L. Vaundell, R. H. Storch
Tb55: Food Lists Of Hippodamia (Coleoptera: Coccinellidae), W. L. Vaundell, R. H. Storch
Technical Bulletins
Food lists for Hippodamia iredecimpunctata (Linnaeus) and the genus Hippodamia as reported in the literature are given. A complete list of citations is included.