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Articles 61 - 68 of 68

Full-Text Articles in Forest Biology

Honey Flora Calendar For January, R S. Coleman Jan 1961

Honey Flora Calendar For January, R S. Coleman

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

A look at flora available in January.

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Influence Of Logging On Douglas Fir Beetle Populations, R R. Lejeune, L H. Mcmullen, M D. Atkins Jan 1961

Influence Of Logging On Douglas Fir Beetle Populations, R R. Lejeune, L H. Mcmullen, M D. Atkins

The Bark Beetles, Fuels, and Fire Bibliography

All species of bark beetles of economic importance prefer to attack freshly-killed host material. Logging slash, wind-throw, and fire-killed timber provide ideal breeding grounds for bark beetles. A few species, mostly in the Dendroctonus group, are able to kill living trees. When beetles in the group, raised in preferred host material, cannot find any or enough freshly-killed trees, logs, or slash to enter, they may attack living trees. In the interior of British Columbia, infestations of the Douglas fir beetle can often be traced to logging disturbance.

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Honey Flora Calendar For December, R S. Coleman Jan 1961

Honey Flora Calendar For December, R S. Coleman

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

A look at flora available in December

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The Effects Of Woodpeckers On Populations Of The Engelmann Spruce Beetle, F B. Knight Jan 1958

The Effects Of Woodpeckers On Populations Of The Engelmann Spruce Beetle, F B. Knight

The Bark Beetles, Fuels, and Fire Bibliography

Woodpeckers have been recognized for many years as a major factor in the natural reduction of Engelmann spruce beetle populations. A means of assessing their value has been developed. Five classifications of woodpecker feeding based on woodpecker work on 225 trees were studies. An analysis of populations measurements showed a correlation between beetle survival and the woodpecker classification and the intensity of infestation in each tree. A heavy woodpecker classification resulted n very little survival at all intensities of infestation. Survival increased both with an increase in intensity of infestation and a lower woodpecker classification. The average reduction in populations …

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Forest Fires In The Northern Rocky Mountains, J S. Barrows Jan 1951

Forest Fires In The Northern Rocky Mountains, J S. Barrows

The Bark Beetles, Fuels, and Fire Bibliography

This is a report on an analysis of 36,000 forest fires in the northern Rocky Mountains. The analysis was made to gain a better understanding of the occurrence, behavior, control, and effects of fires, and in turn to obtain essential information required for improved planning and management of fire protection systems. The results present answers to these questions: 1) What is the magnitude of the regional fire problem? 2) What are the basic features of fire behavior under various topographic, fuel, and weather conditions? 3) What have been the results of organized fire control programs including fire prevention, detection, communication, …

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Rate Of Deterioration Of Beetle-Killed Engelmann Spruce, James L. Mielke Jan 1950

Rate Of Deterioration Of Beetle-Killed Engelmann Spruce, James L. Mielke

The Bark Beetles, Fuels, and Fire Bibliography

Examination of beetle-killed stands in Utah and Colorado indicate that dead Engelmann Spruce will remain standing and sound for at least 20 years.

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Forest Fire Damage Studies In The Northeast--I. Bark-Beetles And Fire Damaged Hardwoods, Paul W. Stickel Oct 1934

Forest Fire Damage Studies In The Northeast--I. Bark-Beetles And Fire Damaged Hardwoods, Paul W. Stickel

The Bark Beetles, Fuels, and Fire Bibliography

In reporting the damage to trees scorched lightly at the base by fire the average fire warden and even the technically trained forester is given to stating that little harm has been done providing the tree crowns remain green. Such a statement is far from being correct, failing as it does to take into account the aftermath of insect and fungus damage which invariably follows even the lightest of surface fires. In the case reported herein, over 50 per cent of the fire-scorched hardwoods showed signs of the presence of ambrosia-beetles, whose work, even if the trees continue to live, …

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Practical Information On The Scolytid Beetles On North American Forests I. Barkbeetles Of The Genus Dendroctonus, Andrew Delmar Hopkins Jan 1909

Practical Information On The Scolytid Beetles On North American Forests I. Barkbeetles Of The Genus Dendroctonus, Andrew Delmar Hopkins

The Bark Beetles, Fuels, and Fire Bibliography

During the writer's investigations of extensive insect depredations in the forests of West Virginia, from 1890 to 1902, he was forcibly impressed with the importance of the forest-insect problem in connection with any future efforts toward the successful management of the forests of this country, and was thus led to give special attention to the subject. It was soon realized that among the principal groups of insect enemies of forest trees the scolytid bark and wood boring beetles must occupy first rank, both in economic importance and systematic interest. Subsequent investigations in West Virginia, in connection with the work of …

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