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- Evolution (66)
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Articles 1261 - 1290 of 1385
Full-Text Articles in Genetics and Genomics
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.
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.
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.
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
An unknown number of deer are continually killed on summer and winter ranges by predators, and in at least some locations these losses are significant.
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.
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.
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.
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.
Revision Of The South American Colubrid Snakes Of The Helicops Pastazae Complex, Douglas A. Rossman
Revision Of The South American Colubrid Snakes Of The Helicops Pastazae Complex, Douglas A. Rossman
Occasional Papers of the Museum of Natural Science, Louisiana State University
No abstract provided.
Karyotypic Variation In Oryzomyine Rodents (Cricetinae) With Comments On Chromosomal Evolution In The Neotropical Cricetine Complex, Alfred L. Gardner, James L. Patton
Karyotypic Variation In Oryzomyine Rodents (Cricetinae) With Comments On Chromosomal Evolution In The Neotropical Cricetine Complex, Alfred L. Gardner, James L. Patton
Occasional Papers of the Museum of Natural Science, Louisiana State University
No abstract provided.
The Distributional Status Of Some Peruvian Mammals, Alfred L. Gardner
The Distributional Status Of Some Peruvian Mammals, Alfred L. Gardner
Occasional Papers of the Museum of Natural Science, Louisiana State University
No abstract provided.
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.
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.
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.
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.
Notes On The Natural History Of Plecotus Rafinesquii, Clyde Jones, Royal D. Suttkus
Notes On The Natural History Of Plecotus Rafinesquii, Clyde Jones, Royal D. Suttkus
Occasional Papers of the Museum of Natural Science, Louisiana State University
No abstract provided.
Radial Distribution Of Corticular Photosynthate In Stems Of Bigtooth And Trembling Aspen, Robert K. Shepherd, Jr.
Radial Distribution Of Corticular Photosynthate In Stems Of Bigtooth And Trembling Aspen, Robert K. Shepherd, Jr.
Aspen Bibliography
No abstract provided.
A New Species Of Lesser Antillean Typhlops (Serpentes: Typhlopidae), Richard Thomas
A New Species Of Lesser Antillean Typhlops (Serpentes: Typhlopidae), Richard Thomas
Occasional Papers of the Museum of Natural Science, Louisiana State University
No abstract provided.
Generic Status Of Opheodrys Mayae, A Colubrid Snake Endemic To The Yucatan Peninsula, Douglas A. Rossman, Gerald C. Shaefer
Generic Status Of Opheodrys Mayae, A Colubrid Snake Endemic To The Yucatan Peninsula, Douglas A. Rossman, Gerald C. Shaefer
Occasional Papers of the Museum of Natural Science, Louisiana State University
No abstract provided.
Location-Allocation Models For Establishing Facilities, David F. Gibson, John Rodenberg
Location-Allocation Models For Establishing Facilities, David F. Gibson, John Rodenberg
Aspen Bibliography
Two models and accompanying computer programs are presented which were developed to locate facilities for the timber harvesting industry. Addressed is a case of the facility location-allocation problem. The optimum location and number of landings, facilities to which timber is transshipped, are determined so as to minimize a cost function. This function is composed of the following components: (1) cost of transporting material from its original location to a landing, (2) cost of establishing a landing (facility cost), and (3) cost of transporting material from the landings to some designated point termed the origin. Output of the computer programs is …
Short-Term Growth Response To Fertilization In Young Quaking Aspen, Keith Van Cleve
Short-Term Growth Response To Fertilization In Young Quaking Aspen, Keith Van Cleve
Aspen Bibliography
No abstract provided.
Continued Studies Of The Status, Socialization, And Relationships Of Isle Royale Wolves, 1967-1970., Michael L. Wolfe, Durward L. Allen
Continued Studies Of The Status, Socialization, And Relationships Of Isle Royale Wolves, 1967-1970., Michael L. Wolfe, Durward L. Allen
Aspen Bibliography
No abstract provided.
Community Characteristics Of Six Burned Aspen-Conifer Sites And Their Related Animal Use, Larry H. Kleinman
Community Characteristics Of Six Burned Aspen-Conifer Sites And Their Related Animal Use, Larry H. Kleinman
Aspen Bibliography
No abstract provided.