Forest Biology Commons^™

Fire Climate Interactions And Predicting Fire Season Severity In The Mediterranean Climate Areas Of California, Southern Oregon, And Western Nevada, Alan H. Taylor, Carl N. Skinner, Andrew M. Carleton, Scott L. Stephens, Valerie Trouet, Bernd Haupt, Andrew Pierce

Joint Fire Science Program Research Project Reports

• We identified annual area burned for 37 National Forests in Washington, Oregon, and California between 1929 and 2004 from annual fire reports. Variation in area burned each year on National Forest lands is strongly related (r2 = 0.87) to total area burned in California. This indicates area burned in National Forests is a good indicator of total area burned in a state. • Four large groups of National Forests were identified that had similar temporal patterns of fire extent. Three of these groups were spatially coherent and included mainly: 1) Washington and northern Oregon; 2) northern California and California …

Determining Differences In The Spatial Distribution Of Forest Structure On The Kaibab Plateau: Implications For Forest Management And The Northern Goshawk, Ryan S. Miller

Other Publications in Wildlife Management

The Kaibab Plateau, in North Central Arizona, has undergone extensive change in the last 100 years due to land management practices such as logging, road building, and fire suppression. The northern goshawk (Accipiter gentilis) has been a center of controversy, due to the potential effects of silvicultural practices on goshawk breeding habitat (Reynolds-1983, Bloom et al 1986, Kennedy 1989, Crocker-Bedford 1990). Current and past research efforts on the Kaibab Plateau have mapped Goshawk nesting territories and temporal change in nesting behavior and success. However, these research efforts have not determined how long-term spatial changes in land-use activities that have influenced …

Air Quality And Shelterbelts: Odor Mitigation And Livestock Production, A Literature Review, John Tyndall, Joe Colletti

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

This literature review is focused on the potential for innovative use of trees and other vegetation to reduce the odor associated with livestock production. The goal is to examine available evidence to assess if trees and shelterbelts may: 1) be able to help control odor through physical and biological means, and 2) be an economically feasible technology for livestock producers as well as surrounding communities.

Agroforestry In The United States: Research And Technology Transfer Needs For The Next Millennium

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

If society's needs and aspirations for forestderived goods, services, and amenities truely are to be met, we must find ways of augmenting traditional forestry by gleaning some portion of these benefits from agricultural lands. For example: windbreaks, riparian forest buffers, hybrid poplar trees, farm woodlots, and grazing/timber systems.

Plans For Crash-Tested Bridge Railings For Longitudinal Wood Decks On Low-Volume Roads, Michael A. Ritter, Ronald K. Faller, David B. Bunnell, Paula D. Hilbrich Lee, Barry Thomas Rosson

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

The plans for crashworthy bridge railings for low-volume roads were developed through a cooperative research program involving the USDA Forest Service, Forest Products Laboratory (FPL); the Midwest Roadside Safety Facility, University of Nebraska-Lincoln (MwRSF); and the Forest Service, National Forest System, Engineering. Three railings were developed and successfully tested in accordance with National Cooperative Highway Research Program (NCHRP) Report 350 Test Level-1 requirements. The fourth system was developed for a lower test level based on criteria developed by the Forest Service for single-lane bridges on very low-volume roads. For the convenience of the user, full drawing sets are provided in …

Plans For Crash-Tested Wood Bridge Railings For Concrete Decks, Michael A. Ritter, Ronald K. Faller, Paula D. Hilbrich Lee, Barry Thomas Rosson, Sheila Rimal Duwadi

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

As part of a continuing cooperative research between the Midwest Roadside Safety Facility (MwRSF); the USDA Forest Service, Forest Products Laboratory (FPL); and the Federal Highway Administration (FHWA), several crashworthy wood bridge railings and approach railing transitions have been adapted for use on concrete bridge decks. These railings meet testing and evaluation criteria outlined in National Cooperative Research Program (NCHRP) Report 350, Recommended Procedures for the Safety Performance Evaluation of Highway Features, and include a glued-laminated timber (glulam) rail, with and without a curb, at Test Level- 2 (TL-2), a glulam rail with curb at TL-4, and a glulam …

Integrating Agroforestry Into Usda Programs: A Task Force Report To The Usda Interagency Working Group On Agroforestry, W. J. Rietveld, James P. Lassoie, Charles A. Francis, William Farris, Catalino Blanche, Bruce Wight

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

The task force collected and synthesized infonnation and recommended actions to develop the potential of agroforestry to help attain USDA sustainable development goals.

Plans For Crash-Tested Bridge Railings For Longitudinal Wood Decks, Michael A. Ritter, Ronald K. Faller, Paula D. Hilbrich Lee, Barry Thomas Rosson, Sheila Rimal Duwadi

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

In the past decade, bridge railing design criteria have moved away from static-load design and have focused on full-scale crash testing as a more appropriate and reliable means of evaluating bridge railings. The five bridge railing plans presented reflect the results of a cooperative research project between the Midwest Roadside Safety Facility, University of Nebraska-Lincoln; the USDA Forest Service, Forest Products Laboraotry; and the Federal Highway Administration. The project objective was to develop and crash test bridge railings and approach railing transitions for longitudinal wood bridge decks. The bridge railings were completed in accordance with AASHTO Performance Levell, Performance Level …

Wildlife Habitats In Managed Rangelands-- The Great Basin Of Southeastern Oregon, Wayne Bowers, Bill Hosford, Art Oakley, Carl Bond

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

All land management activities on managed rangelands will have some impact(s) on fish habitat; those in the riparian zone will have the greatest impact(s). Native trout populations in the Great Basin of southeastern Oregon exhibit predictable responses to alterations in their habitats; optimum production of native trout is therefore achievable through careful habitat management.

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

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 …

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 …

Mycorrhizae Of Ponderosa Pine In Nebraska Grassland Soils, R. W. Goss

Nebraska Agricultural Experiment Station: Historical Research Bulletins

While the genus Pinus has been the subject of extensive mycorrhizal studies there are only a few scattered references to western yellow pine, P. ponderosa, and no detailed descriptive literature on the mycorrhizae of this species. P. ponderosa is indigenous to Nebraska and the one species most extensively grown in local nurseries for windbreaks and farm plantings. Similarly, there is little information on mycorrhizae in the Great Plains between the forested regions of the Mississippi River states and the Rocky Mountains. Because this predominantly grassland area is sparse in natural tree growth the individual tree as an ornamental or …

Ecological Investigations Upon The Germination And Early Growth Of Forest Trees, Richard H. Boerker

University Studies (University of Nebraska) (1888–1984)

Briefly stated the purpose of the present investigation is to inquire into the effect of the more important habitat and seed factors upon the germination and early development of certain American forest trees in control cultures in the greenhouse for the purpose of obtaining data that may be used in the ~ilvicultural management of these species.

Prefatory Note 1 / Preliminary Considerations 7 / Historical 7 / Classification and Resume of Habitat Factors 11 / The Germination Process 15 / Method of Attacking Problem at Hand 19/ Methods and Apparatus Used 2 1/ The Control of Habitat Factors 24 / …

Plant Migration Studies: Forest Trees, Charles E. Bessey

University Studies (University of Nebraska) (1888–1984)

It is a familiar fact that new species appear from time to time among the native plants of a region. Such newcomers turn out on examination to be new only in the sense that they have not previously lived in the region, and in every instance these new plants are found to have come from other regions where they had existed for a longer or shorter period of time. In some cases the · new species remain for a time and then disappear, or at least become inconspicuous, but more commonly they crowd in among the former plants and become …

The Distribution Of The Native Forest Trees Of Nebraska, Charles E. Bessey, Robert Bolin , Depositor

School of Biological Sciences: Faculty Publications

This document lists 67 trees identified by Dr Bessey with the help of others around the state. It includes the common and scientific names as well brief comment about each tree. Small maps are provided showing the distribution of each tree.