Open Access. Powered by Scholars. Published by Universities.®

Forest Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Forest Biology

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 1411 - 1440 of 1522

Full-Text Articles in Forest Sciences

The Southern Pine Beetle, Dendroctonus Frontalis Zimm, 1961-1971, Jack E. Coster Jun 1972

The Southern Pine Beetle, Dendroctonus Frontalis Zimm, 1961-1971, Jack E. Coster

eBooks

In the last decade, since the appearance of the comprehensive reviews of southern pine beetle (SPB), Dendroctonus frontalis Zimm. (Coleoptera :Scolytidae ) *, literature by Thatcher (1960) and Dixon and Osgood (1961), much research progress on the insect has been realized. This review condenses reports of research on the insect published since 1961.


Forestry Bulletin No. 22: Silviculture Of Southern Upland Hardwoods, Laurence C. Walker Jan 1972

Forestry Bulletin No. 22: Silviculture Of Southern Upland Hardwoods, Laurence C. Walker

Forestry Bulletins No. 1-25, 1957-1972

"Upland hardwood types occur throughout the forests of the southern United States. Sometimes deciduous species intermingle with pines to form mixed conifer-broadleaf types; other times hardwood types are interspersed with pine types; depending upon soil, physiography, past land use, and fire."


Forest Fuel Accumulation -- A Growing Problem, Marvin Dodge Jan 1972

Forest Fuel Accumulation -- A Growing Problem, Marvin Dodge

The Bark Beetles, Fuels, and Fire Bibliography

Discusses the problem caused by accumulation of forest fuels in the wild-land forests of the western USA under the policy of total fire protection pursued there for many years, and emphasizes the need to find economical and practical ways of reducing fuel hazards in these forests, especially by means of prescribed burning under conditions in which low-intensity fires can be achieved.


Vegetation Survey Of Floodplain Forests Along The Wabash River, Philip E. Phillippe Jan 1972

Vegetation Survey Of Floodplain Forests Along The Wabash River, Philip E. Phillippe

Masters Theses

No abstract provided.


A Taxonomic Study Of Two Nominal Subspecies Of Pikas (Ochotona Princeps) In The Cascade Mountains Of Oregon, Richard M. Coots Jan 1972

A Taxonomic Study Of Two Nominal Subspecies Of Pikas (Ochotona Princeps) In The Cascade Mountains Of Oregon, Richard M. Coots

Dissertations and Theses

Pikas from four colonies in the Cascade Mountains of Oregon were examined. Two colonies were chosen from within the geographical distribution of two nominal subspecies. A discriminate analysis of morphological measurements taken from the specimens showed that each colony could be distinguished from each other. Each colony studied showed more intra-colony similarity than inter-colony similarity regardless of distance separating the colonies or subspecies designations. The results indicate that the validity of subspecies designations for this species can be questioned.


Forestry Bulletin No. 21: Diseases Of Forest Trees And Forest Products, A. F. Verrall Sep 1970

Forestry Bulletin No. 21: Diseases Of Forest Trees And Forest Products, A. F. Verrall

Forestry Bulletins No. 1-25, 1957-1972

This bulletin covers the roles and types of diseases and fungi found in forest trees and products. It also discusses principles of disease prevention and control.


Forestry Bulletin No. 20: A Short History Of Forest Conservation In Texas, 1880-1940, Robert S. Maxwell, James W. Martin Jan 1970

Forestry Bulletin No. 20: A Short History Of Forest Conservation In Texas, 1880-1940, Robert S. Maxwell, James W. Martin

Forestry Bulletins No. 1-25, 1957-1972

"This short history of the development of forest conservation in Texas is intended primarily for the general reader. The study has concentrated on the early history of the conservation movement, dating from the beginning of commercial lumbering in the state, approximately 1880, to about 1940 and World War II."


Fire Weather : A Guide For Application Of Meteorological Information To Forest Fire Control Operations, Mark J. Schroeder, Charles C. Buck Jan 1970

Fire Weather : A Guide For Application Of Meteorological Information To Forest Fire Control Operations, Mark J. Schroeder, Charles C. Buck

The Bark Beetles, Fuels, and Fire Bibliography

Weather is never static. It is always dynamic. Its interpretation is an art. The art of applying complex information about weather to the equally complex task of wildland fire control cannot be acquired easily-especially not by the mere reading of a book. The environment is in control in wildland firefighting. Free-burning fires are literally nourished by weather elements, atmospheric components, and atmospheric motion. Outguessing mother nature in order to win control is an extremely difficult task. We need to soothe her with understanding. We have attempted to present information in such a way that your daily and seasonal awareness of …


Stem Canker Disease Of Red Flowering Gums, W P. Cass Smith Jan 1970

Stem Canker Disease Of Red Flowering Gums, W P. Cass Smith

Journal of the Department of Agriculture, Western Australia, Series 4

Of the many native Eucalypts in Western Australia few are more attractive than the red flowering gum.

It flowers generally during the Christmas period and provides a beautiful display for several weeks, with blossoms of several colours including dark red, scarlet, orange and pink.


Forestry Bulletin No. 18: Geography Of The Southern Forest Region, Laurence C. Walker, G. Loyd Collier Jul 1969

Forestry Bulletin No. 18: Geography Of The Southern Forest Region, Laurence C. Walker, G. Loyd Collier

Forestry Bulletins No. 1-25, 1957-1972

"The Southern Forest Region, as here discussed, comprises the area east of the Texas and Oklahoma prairies and south of the Missouri, Ohio, and Potomac rivers, plus an extension along the Atlantic coast to central New Jersey."


Forestry Bulletin No. 17: Films And Filmstrips On Forestry, Nelson T. Samson Apr 1969

Forestry Bulletin No. 17: Films And Filmstrips On Forestry, Nelson T. Samson

Forestry Bulletins No. 1-25, 1957-1972

"Motion picture films and filmstrips in forestry and related fields are available from many sources in America. This publication is an attempt to provide for foresters and others interested in such aids a convenient means for selecting materials to meet their particular needs."


Behavior Of Pesticides In Plants, Logan A. Norris Jan 1969

Behavior Of Pesticides In Plants, Logan A. Norris

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

A number of chemicals of diverse characteristics have arbitrarily been classed together on the basis of their use and given the descriptive name "pesticides. " An unfortunate aura of mystery has developed about these chemicals. However, there is nothing unique or mysterious about the chemicals we refer to as "pesticides." Like other chemicals, they have properties which can be accurately measured; they obey all the laws of physics, chemistry, and biology.


The Biology Of Choristoneura Houstonana (Lepidoptera: Tortricidae), A Pest Of Juniperus Species, E. A. Heinrichs, Hugh E. Thompson Jul 1968

The Biology Of Choristoneura Houstonana (Lepidoptera: Tortricidae), A Pest Of Juniperus Species, E. A. Heinrichs, Hugh E. Thompson

Department of Entomology: Faculty Publications

Choristoneura houstonana (Grote) lays eggs singly in July. Egg development ranged from 8 to 11 days, with the majority hatching 10 days after oviposition. Larvae are solitary, and mine during early instars, but later instars feed externally on leaves in shelters made by webbing foliage together. There is one generation each year, and overwintering occurs in a hibernaculum, in mined leaves. Field-collected head-capsule width frequencies indicated nine larval instars. Rearing larvae on seedling junipers indoors indicated a range of 8–11 instars. Pupation occurs during June and July in the shelter where the larva feeds. The pupal stage lasted about 10 …


Forestry Bulletin No. 16: Silviculture Of Slash Pine, Laurence C. Walker, Harry V. Wiant Jr. Apr 1968

Forestry Bulletin No. 16: Silviculture Of Slash Pine, Laurence C. Walker, Harry V. Wiant Jr.

Forestry Bulletins No. 1-25, 1957-1972

An analysis of the reproduction, management and destructive agents in relation to the Slash Pine.


South Dakota Bird Notes, Keith E. Evans, Roger R. Kerbs Jun 1967

South Dakota Bird Notes, Keith E. Evans, Roger R. Kerbs

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Approximately 90,000 small stock ponds are scattered throughout South Dakota. The majority of these ponds are less than 10 acres in size, and depend entirely on surface runoff for their water supply. Although their primary purpose is to provide drinking water for livestock, many species of waterfowl and shorebirds use the pond areas for resting and feeding during spring and fall migrations, and for nesting habitat throughout the summer.

Neither the amount of use nor the potential for use by birds on stock ponds in South Dakota is known. Preliminary data presented here are results of waterfowl observations on 13 …


Forestry Bulletin No. 15: Silviculture Of The Minor Southern Conifers, Laurence C. Walker May 1967

Forestry Bulletin No. 15: Silviculture Of The Minor Southern Conifers, Laurence C. Walker

Forestry Bulletins No. 1-25, 1957-1972

An analysis of many conifers, including pine, cedar and cypress.


Forestry Bulletin No. 14: Practical Point-Sampling, Ellis V. Hunt Jr., Robert D. Baker Apr 1967

Forestry Bulletin No. 14: Practical Point-Sampling, Ellis V. Hunt Jr., Robert D. Baker

Forestry Bulletins No. 1-25, 1957-1972

"Mr. L.R. Grosenbaugh (1952) introduced point-sampling to American foresters, citing Mr. W. Bitterlich's earlier work in Europe. Primarily it is, he said, 'A rapid method of sampling tree basal area per acre . . . '"


Control Of Eucalypt Regrowth, J G. Paterson Jan 1967

Control Of Eucalypt Regrowth, J G. Paterson

Journal of the Department of Agriculture, Western Australia, Series 4

EUCALYPT regrowth has presented a problem to farmers throughout the State for many years.

Some species are checked by heavy grazing although, in the main, this method is far from satisfactory.


Ornamental Trees For The Farm Garden, P Luff Jan 1967

Ornamental Trees For The Farm Garden, P Luff

Journal of the Department of Agriculture, Western Australia, Series 4

THE need for trees in the farm garden is being realized by many people.

Trees around the homestead are required to give such features as shade, colour, fragrance and many other advantages to generally make an area more livable.

Besides these advantages, trees appear to help smaller plants flourish by increasing the humidity and providing various degrees of shade and sunlight.


Forestry Bulletin No. 12: Pine Seedling Survival And Growth Response To Soils Of The Texas Post-Oak Belt, J. J. Stransky, M. Victor Bilan Dec 1966

Forestry Bulletin No. 12: Pine Seedling Survival And Growth Response To Soils Of The Texas Post-Oak Belt, J. J. Stransky, M. Victor Bilan

Forestry Bulletins No. 1-25, 1957-1972

An analysis of the methods and materials in relation to pine seedling survival, including a section on results and discussion.


Forestry Bulletin No. 11: Silviculture Of Longleaf Pine, Laurence C. Walker, Harry V. Wiant Jr. Oct 1966

Forestry Bulletin No. 11: Silviculture Of Longleaf Pine, Laurence C. Walker, Harry V. Wiant Jr.

Forestry Bulletins No. 1-25, 1957-1972

A discussion of issues surrounding the management, reproduction and nutrition of the Longleaf Pine.


Forestry Bulletin No. 10: Texas Pulpwood Production, Nelson T. Samson Jun 1966

Forestry Bulletin No. 10: Texas Pulpwood Production, Nelson T. Samson

Forestry Bulletins No. 1-25, 1957-1972

An analysis by the forestry economist Nelson T. Samson of pulpwood production in Texas, including make-up, output and trends.


Forestry Bulletin No. 8: Soil Moisture And Soil Temperature Under A Post Oak-Shortleaf Pine Stand, G. Schneider, J. J. Stransky Apr 1966

Forestry Bulletin No. 8: Soil Moisture And Soil Temperature Under A Post Oak-Shortleaf Pine Stand, G. Schneider, J. J. Stransky

Forestry Bulletins No. 1-25, 1957-1972

"This paper reports moisture and temperature observations in the surface 18 inches of soil under an east Texas post oak (Quercus stellata Wangenh.) - shortleaf pine (Pinus echinata Mill.) stand throughout a 4 year period."


Forestry Bulletin No. 9: Silviculture Of Shortleaf Pine, Laurence C. Walker, Harry V. Wiant Jr Apr 1966

Forestry Bulletin No. 9: Silviculture Of Shortleaf Pine, Laurence C. Walker, Harry V. Wiant Jr

Forestry Bulletins No. 1-25, 1957-1972

"Nowhere is silviculture more intensively practiced than in the southern United States exempt, perhaps, in certain European nations. This is because of the tremendous demands upon the forests for fiber in a region of optimum climatic characteristics for rapid growth of valuable species. In meeting these demands, management instructs its foresters to shift their efforts into high gear."


Trees Of Western Australia, Charles Austin Gardner Jan 1966

Trees Of Western Australia, Charles Austin Gardner

Journal of the Department of Agriculture, Western Australia, Series 4

It is not desirable to give locality names to plants unless their range is fully underwood.

Such names can be very misleading.

Thr following is an illistrated discussion of the identification of five Western Australian trees.


A Study Of The Northern Upland Forest On The Islands Of The Whitefish Lake Chain, Minnesota, Roy K. Blowers Jan 1964

A Study Of The Northern Upland Forest On The Islands Of The Whitefish Lake Chain, Minnesota, Roy K. Blowers

Journal of the Minnesota Academy of Science

During an investigation of the area of the Whitefish Lakes, it was noted that two definite types of forest communities existed, a conifer forest and a hardwood forest. It was also noted that each type appeared on different parent soil materials. The problem was actually divided into four parts as follows: How well did the vegetation and the parent material correlate? What was the plant succession in the area? How was the plant succession affected by the parent material? And, how was the resulting soil affected by the vegetation?

It was decided that a forest study of islands would give …


Trees Of Western Australia. 101. The Salt River Mallett (Eucalyptus Sargentii Maiden). 102. The Two-Winged Gimley (Eucalyptus Diptera C.). 103. Eucalyptus Burdettiana Blakely Et Steedman. 104. The Moort (Eucalyptus Platypus Hook), Charles Austin Gardner Jan 1963

Trees Of Western Australia. 101. The Salt River Mallett (Eucalyptus Sargentii Maiden). 102. The Two-Winged Gimley (Eucalyptus Diptera C.). 103. Eucalyptus Burdettiana Blakely Et Steedman. 104. The Moort (Eucalyptus Platypus Hook), Charles Austin Gardner

Journal of the Department of Agriculture, Western Australia, Series 4

WITH the ever-increasing spread of salt in certain poorly-drained soils in Western Australia, any plant which tends to restrict salt encroachment is of considerable economic importance.

In the genus Eucalyptus there are a few trees which will withstand a certain degree of soil salinity.


Insect Pests Of Forests. 3. The Tuart Bud Weevil And The Gregarious Gall Weevil, Clee Francis Howard Jenkins Jan 1963

Insect Pests Of Forests. 3. The Tuart Bud Weevil And The Gregarious Gall Weevil, Clee Francis Howard Jenkins

Journal of the Department of Agriculture, Western Australia, Series 4

THE group of beetles commonly known as weevils contains some of the most troublesome of all insect pests.

The best known is probably the wheat weevil, but many other forms attack stored products and growing plants.


Honey Flora Calendar For April, R S. Coleman Jan 1962

Honey Flora Calendar For April, R S. Coleman

Journal of the Department of Agriculture, Western Australia, Series 4

A list of Flora available in April


Honey Flora Calendar For July, R S. Coleman Jan 1962

Honey Flora Calendar For July, R S. Coleman

Journal of the Department of Agriculture, Western Australia, Series 4

A guide to Flora available to Honey Bees this month.