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Articles 4801 - 4830 of 4890
Full-Text Articles in Genetics and Genomics
Characterizing The Growth Dynamics Of Lake States Aspen, Thomas Edward Burk
Characterizing The Growth Dynamics Of Lake States Aspen, Thomas Edward Burk
Aspen Bibliography
No abstract provided.
Our Western Aspen Ecosystem: Quest For Management, Norbert V. Debyle
Our Western Aspen Ecosystem: Quest For Management, Norbert V. Debyle
Aspen Bibliography
No abstract provided.
Aspen Sucker Production And Growth From Outplanted Root Cuttings, Donald A. Perala
Aspen Sucker Production And Growth From Outplanted Root Cuttings, Donald A. Perala
Aspen Bibliography
Aspen suckers from 1-m-long root cuttings survived and grew better than those from 12.5-cm-long cuttings. Sucker survival and growth were also inversely related to parent root diameter. Discusses the practical implications for aspen management.
Origins Of Biological Thought, John B. Jenkins
Origins Of Biological Thought, John B. Jenkins
Biology Faculty Works
No abstract provided.
Hypoxylon Mammatum Pathotoxin Responsible For Canker Formation In Quaking Aspen, Arthur L. Schipper, Jr.
Hypoxylon Mammatum Pathotoxin Responsible For Canker Formation In Quaking Aspen, Arthur L. Schipper, Jr.
Aspen Bibliography
No abstract provided.
Research For Connecticut By The Storrs Agricultural Experiment Station
Research For Connecticut By The Storrs Agricultural Experiment Station
Storrs Agricultural Experiment Station
No abstract provided.
Review Of "History Of The Life Sciences. An Annotated Bibliography" By P. Smit, John B. Jenkins
Review Of "History Of The Life Sciences. An Annotated Bibliography" By P. Smit, John B. Jenkins
Biology Faculty Works
No abstract provided.
Buoyancy Changes As Related To Respiratory Behavior In An Amphibious Snail, Pomacea Urceus (Müller), From Venezuela, Kathleen A. Burky, Albert J. Burky
Buoyancy Changes As Related To Respiratory Behavior In An Amphibious Snail, Pomacea Urceus (Müller), From Venezuela, Kathleen A. Burky, Albert J. Burky
Biology Faculty Publications
The ampullariid Pomacea urceus uses its ctenidium and lung in respiration. The snails reach the surface with their siphon and ventilate their lung by withdrawing their head-foot in a pumping action. The lung gas also serves to change the buoyancy of the snails. After a ventilation a snail does not necessarily return to the same buoyancy level. They may achieve overall specific gravities of <1 to > 1 after a ventilation. They may remain submerged (s.g. > 1) or float (s.g.
Tree To Chips To Red Meat To Steaks, It Serves As Emergency Livestock Feed, Les Kamstra
Tree To Chips To Red Meat To Steaks, It Serves As Emergency Livestock Feed, Les Kamstra
Aspen Bibliography
We must be resourceful. Our "natural" resources are becoming scarcer every day, while waste products mushroom in dumps, along roadsides, in the water and air.
The Influence Of Predator Control On Two Adjacent Wintering Deer Herds, Dennis D. Austin, Philip J. Urness, Michael L. Wolfe
The Influence Of Predator Control On Two Adjacent Wintering Deer Herds, Dennis D. Austin, Philip J. Urness, Michael L. Wolfe
Aspen Bibliography
No abstract provided.
Los Genes Asesinos, Aldemaro Romero Jr.
Los Genes Asesinos, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Vegetation And Environmental Features Of Forest And Range Ecosystems, George A. Garrison, Ardell J. Bjugstad, Don A. Duncan, Mont E. Lewis, Dixie R. Smith
Vegetation And Environmental Features Of Forest And Range Ecosystems, George A. Garrison, Ardell J. Bjugstad, Don A. Duncan, Mont E. Lewis, Dixie R. Smith
Aspen Bibliography
This is one of the reports developed as part of the Forest-Range Environmental Study (FRES) of the Forest Service, U.S. Department of Agriculture. This report presents descriptive sketches of 34 soil-vegetation units, called ecosystems. These cover all the land area of the 48 contiguous States.
Jack Pine And Aspen Forest Floors In Northeastern Minnesota, Robert M. Loomis
Jack Pine And Aspen Forest Floors In Northeastern Minnesota, Robert M. Loomis
Aspen Bibliography
Characteristics of upland forest floors under mature jack pine and aspen in northeastern Minnesota were investigated.
Some Individual Plant Biomass Values From Northeastern Minnesota, Lewis F. Ohmann, David F. Grigal
Some Individual Plant Biomass Values From Northeastern Minnesota, Lewis F. Ohmann, David F. Grigal
Aspen Bibliography
No abstract provided.
Biomass Estimation For Some Shrubs From Northeastern Minnesota, David F. Grigal, Lewis F. Ohmann
Biomass Estimation For Some Shrubs From Northeastern Minnesota, David F. Grigal, Lewis F. Ohmann
Aspen Bibliography
Biomass prediction equations were developed for 23 northeastern Minnesota shrub species. The allometric function was used to predict leaf, current annual woody twig, stem, and total woody biomass (dry grams), using stem diameter class estimated to the nearest 0.25 cm class at 15 cm above ground level as the independent variable.
Natural Regeneration Of Northern Hardwoods In The Northern Great Lakes Region, Carl H. Tubbs
Natural Regeneration Of Northern Hardwoods In The Northern Great Lakes Region, Carl H. Tubbs
Aspen Bibliography
The forest types collectively known as "northern hardwoods" (Quigley and Babcock 1969) occupy nearly 100 million acres in eastern North America.
Forest Insect And Disease Management : Aspen Mortality At The Maroon Lake Campground, David W. Johnson, Thomas E. Hinds
Forest Insect And Disease Management : Aspen Mortality At The Maroon Lake Campground, David W. Johnson, Thomas E. Hinds
Aspen Bibliography
At the request of the White River National Forest, Dave Johnson, Plant Pathologist, FI&DM and Tom Hinds, Plant Pathologist, RMFRES, made an evaluation of aspen mortality in the Maroon Lake Campground, Aspen Ranger District during June 13 to 15, 1977. Previously, Hinds (1976) reported accelerated aspen loss in 17 campgrounds, including Maroon Lake, located throughout Colorado and New Mexico (Fig. 1).
Aspen Mortality At The Maroon Lake Campground, Aspen Ranger District, White River National Forest, David W. Johnson, Thomas E. Hinds, G.L. Downing, F.A. Dorrell
Aspen Mortality At The Maroon Lake Campground, Aspen Ranger District, White River National Forest, David W. Johnson, Thomas E. Hinds, G.L. Downing, F.A. Dorrell
Aspen Bibliography
No abstract provided.
Biomasse D'Un Peuplement De Peuplier Faux-Tremble Age Six Ans, René Doucet
Biomasse D'Un Peuplement De Peuplier Faux-Tremble Age Six Ans, René Doucet
Aspen Bibliography
The establishment of an experiment designed to study the effect of thinning and fertilization in a 6 year-old trembling aspen stand, provided the opportunity to determine the mass of the standing crop present at the age.
Biomass And Nutrient Content Of Green Material The Size Of Medium And Large Litter, William E. Miller
Biomass And Nutrient Content Of Green Material The Size Of Medium And Large Litter, William E. Miller
Aspen Bibliography
No abstract provided.
Bvr-1, A Restriction Locus Of A Type C Rna Virus In The Feline Cellular Genome: Identification, Location, And Phenotypic Characterization In Cat X Mouse Somatic Cell Hybrids, Stephen J. O'Brien
Bvr-1, A Restriction Locus Of A Type C Rna Virus In The Feline Cellular Genome: Identification, Location, And Phenotypic Characterization In Cat X Mouse Somatic Cell Hybrids, Stephen J. O'Brien
Biology Faculty Articles
Somatic cell hybrids were constructed between BALB/c-RAG mouse cells and feline lymphoma cells by the hypoxanthine-aminopterin-thymidine selection scheme. RAG cells spontaneously produce an endogenous B-tropic type C virus. Cat-mouse hybrids preferentially segregate feline chromosomes and retain murine chromosomes,demonstrable by karyotypic and isozyme analyses. Despite the presence of the complete mouse genome, including the viral genome, virus production was diminished to 1-5% of the levels observed in RAG parents based upon particle-associated RNA-dependent DNA polymerase (reverse transcriptase) activity in the culture fluid. Thirty-seven hybrids made on four different occasions had suppressed virus levels, and no hybrids expressed parental virus levels. Reverse …
"Biological Determinism As A Social Weapon", Richard C. Lewontin
"Biological Determinism As A Social Weapon", Richard C. Lewontin
Special Collections: Oregon Public Speakers
No abstract provided.
Chromosomal Banding Patterns Of The Holarctic Rodents, Clethrionomys Rutilus And Microtus Oeconomus, C. F. Nadler, V. R. Rausch, E. A. Lyapunova, N. N. Vorontsov, R. S. Hoffman
Chromosomal Banding Patterns Of The Holarctic Rodents, Clethrionomys Rutilus And Microtus Oeconomus, C. F. Nadler, V. R. Rausch, E. A. Lyapunova, N. N. Vorontsov, R. S. Hoffman
University of Nebraska State Museum: Mammalogy Papers
Biologists have long been aware of close similarities between the mammalian faunas of northern Eurasia and northern North America (Flerov 1967; Rausch 1953, 1963; Sushkin 1925; Tugarinov 1934). This similarity is particularly strong between species of tundra and taiga ecosystems (Hoffmann and Taber 1967; Hoffmann 1974). Among the species having Holarctic distributions, the boreal red-backed vole, Clethrionomys rutilus (Pallas), and the tundra vole, Microtus oeconomus (Pallas) (Rausch, op. cit.), of the subfamily Arvicolinae (= Microtinae) (Kretzoi 1962; Repenning 1968), have wide distributions in Eurasia where they inhabit, but are not restricted to, tundra (Ognev 1950; Corbet 1966). East of the …
Description Of Aspen Communities And Related Wildlife Populations In The Phosphate Strip Mining Area Of Southeastern, Idaho, David S. Winn
Description Of Aspen Communities And Related Wildlife Populations In The Phosphate Strip Mining Area Of Southeastern, Idaho, David S. Winn
Aspen Bibliography
No abstract provided.
Aspen Forest After Harvest, Norbert V. Debyle
Aspen Forest After Harvest, Norbert V. Debyle
Aspen Bibliography
Aspen is a unique forest tree with respect to regeneration. It produces abundant root suckers, up to 40,000 per acre are common, after clearcutting or fire removes the parent stand. The rapidly growing sucker stand competes well with other vegetation, but is susceptible to destruction by excessive ungulate browsing. Clearcut areas produce more streamflow and more growth on shrubs and herbaceous vegetation than does the uncut forest. The patchwork of age classes that results from even-age management optimizes wildlife habitat requirements for several desired species.
Odum's Ecosystem Attributes: Testing An Hypothesis, James A. Macmahon
Odum's Ecosystem Attributes: Testing An Hypothesis, James A. Macmahon
Aspen Bibliography
No abstract provided.
Effects Of Clear-Cutting On Nutrient Losses In Aspen Forests On Three Soil Types In Michigan, Curtis J. Richardson, Jeffrey A. Lund
Effects Of Clear-Cutting On Nutrient Losses In Aspen Forests On Three Soil Types In Michigan, Curtis J. Richardson, Jeffrey A. Lund
Aspen Bibliography
The effects of clear-cutting on NO-3, NH+4, PO3-4, K+, Ca2+, Na+, Fe2+, and Mg2+ losses were evaluated in three 60-year-old aspen stands in northern lower Michigan.
Forestry Report, P. Sims, G. Steneker, K. Fronting, C. Kirby, P. Van Eck, H. Johnson, N. Walker, R. Bohning, L. Carlson, I. Bella, W. Johnstone, R. Waldron, L. Brace
Forestry Report, P. Sims, G. Steneker, K. Fronting, C. Kirby, P. Van Eck, H. Johnson, N. Walker, R. Bohning, L. Carlson, I. Bella, W. Johnstone, R. Waldron, L. Brace
Aspen Bibliography
No abstract provided.
Eatonia No. 20, May 05, 1975, William L. Peters, Janice Peters
Eatonia No. 20, May 05, 1975, William L. Peters, Janice Peters
Eatonia
Eatonia was a newsletter established to facilitate communication among scientists working on a group of aquatic insects in the order Ephemeroptera, more commonly known as mayflies. The newsletter is named after Rev. Alfred E. Eaton who studied mayflies in England in the late 1800’s and is considered the “father” of the modern classification of mayflies.
Eatonia Sup. 01, Jan. 05, 1975, William L. Peters, Janice Peters
Eatonia Sup. 01, Jan. 05, 1975, William L. Peters, Janice Peters
Eatonia
Eatonia was a newsletter established to facilitate communication among scientists working on a group of aquatic insects in the order Ephemeroptera, more commonly known as mayflies. The newsletter is named after Rev. Alfred E. Eaton who studied mayflies in England in the late 1800’s and is considered the “father” of the modern classification of mayflies.