Forest Sciences Commons^™

Comparison Of Water Dynamics In Aspen And Conifer: Implications For Ecology Water Yield Augmentation, Eric Martin Lamalfa

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Differences in water dynamics between deciduous aspen (Populus tremuloides) and co-occurring evergreen conifer species in the Northern Rocky Mountains result from complex physical and biological interactions. A comprehensive evaluation of individual water transfer mechanisms was used to elucidate the relative importance of several components of the hydro logic cycles of aspen and conifer, and determine which water transfer mechanisms have potential to cause differences in net water yield.

Adjacent aspen and conifer stands were monitored to determine snow accumulation and ablation (snow survey), soil moisture recharge (capacitance probes), snowpack sublimation (sublimation pan), transpiration period (thermal dissipation probes), and …

Importance Of Early Successional Forest For Wildlife In Southern New England, Amy Wynia

Senior Honors Projects

Many bird species that require early successional forest are declining in the Northeast U.S. because such habitat is relatively rare and when they inhabit the more common mature forests or suburban areas they are less successful. Early successional forest is maintained by regular disturbance (wind, fire, clear-cutting, and flooding) which has been happening less frequently during the past 50 years. Bird species that have declined during this time and which inhabit early successional forest include ruffed grouse (Bonasa umbellus), blue jay (Cyanocitta cristata), chestnut-sided warbler (Dendroica pensylvanica), gray catbird (Dumetella carolinensis), field sparrow (Spizella pusilla), golden-winged warbler (Vermivora chrysoptera), eastern …

Forest Preservation, Minnesota State University, Mankato

Conservation/Energy Alternatives

Bibliography and photographs of a display of government documents from Minnesota State University, Mankato.

Fire Behavior Modeling To Assess Net Benefits Of Forest Treatments On Fire Hazard Mitigation And Bioenergy Production In Northeastern California, David J. Ganz, David Saah, Klaus Barber, Mark Nechodom

Environmental Science

The fire behavior modeling described here, conducted as part of the Biomass to Energy (B2E) life cycle assessment, is funded by the California Energy Commission to evaluate the potential net benefits associated with treating and utilizing forest biomass. The B2E project facilitates economic, environmental, energy, and effectiveness assessments of the potential public benefits associated with: (1) various options for treatment, disposition, and utilization of forest biomass and (2) energy production from biomass produced by forest remediation activities. The study models forest conditions, fire behavior and fuel changes over a 40-year period, under three fuel treatment scenarios: no treatment; harvest and …

Accelerating Adoption Of Fire Science And Related Research, Jamie Barbour

JFSP Research Project Reports

Since its inception in 1998, the Joint Fire Science Program (JFSP) has funded over 350 projects. The Joint Fire Science Program has long recognized that the investments made in wildland fire science need to be accompanied by an emphasis on science interpretation and delivery. Program success is ultimately measured by how well information from research efforts is being conveyed to resource managers and end users, and whether this information is improving management decisions. This project introduced a conceptual model for an adaptive process to improve the delivery of scientific information. We developed this process through these steps: 1. Creating a …

Atmospheric Fire Risk (Haines Index) In A Changed Climate, Julie Winkler, Brian Potter

JFSP Research Project Reports

Previous studies of wildland fire potential under a perturbed climate have focused on potential changes in near-surface atmospheric parameters (e.g., temperature, humidity, and precipitation) and vegetation changes. However, above-ground atmospheric conditions, such as atmospheric stability, also play a critical role in fire behavior, especially for larger fires. This study employed the widely-used Haines Index as a measure of above-ground conditions relevant to wildland fire and investigated the potential changes in the Haines Index over the next 100 years. The analysis is based on simulations from the most recent version of the National Center for Atmospheric Research (NCAR) Community Climate System …

An Automated System For Evaluating Bluesky Predictions Of Smoke Impacts On Community Health And Ecosystems, Robert Solomon

JFSP Research Project Reports

Predictions of smoke impacts on communities and ecosystems are currently being made by the BlueSky smoke forecast system; providing real-time predictions of surface smoke concentrations from prescribed fire, wildfire, and agricultural burn activities. Currently operational in the Pacific Northwest, BlueSky has already a demonstrated success regarding what inter-agency collaboration can accomplish. A critical component of BlueSky that needed to be addressed was the development of an automated verification system to evaluate predicted impacts from smoke on communities and ecosystems. A verification system is necessary because land managers need to evaluate their burn decisions against potential National Ambient Air Quality Standard …

Fire Managers Field Guide: Hazardous Fuels Management In Subtropical Pine Flatwoods And Tropical Pine Rocklands, Joseph J. O'Brien, Kathyryn A. Mordecai, Leslie Wolcott, James Snyder, Kenneth Outcalt

JFSP Research Project Reports

Preface This document, The Fire Managers Field Guide: Hazardous Fuels Management in Sub-tropical Pine Flatwoods and Tropical Pine Rocklands is intended to provide an overview of techniques and tactics under actual use for addressing hazardous fuels in tropical and subtropical pine forests found in Florida, the Bahamas and elsewhere in the Caribbean. The information presented here was distilled from peer reviewed literature, technical reports, and the experiences of on-theground fire managers. Managing fuels is complex and idiosyncratic. This guide is intended to provide only a broad introduction to currently available techniques; some well known and others newer and untested. The …

Cross-Training Professionals On Reducing Property Loss At The Wildland-Urban Interface, Anne S. Fege

JFSP Research Project Reports

Most wildfire education programs have relied primarily on homeowner information and education. This project focuses on the role of business professionals who are often hired to design, build, maintain or mitigate the home and surrounding landscape or who otherwise advise homeowners and affect their decisions. Such professionals include architects, builders, insurance agents, landscape architects and contractors, planners, media, real estate professionals and others. The findings of this project were three-fold. First, by participating in this program, businesses and professionals gain a marketable service in the form of a greater understanding in wildfire mitigation as well as better business practices with …

Developing An Analysis And Planning Framework For District-Level Fuels Treatment Projects (Final Project Report), Alan Ager

JFSP Research Project Reports

Widespread fuel reduction programs have been initiated in many parts of the USA in response to a growing threat of wildland fire. Urban encroachment, fuels buildup from fire suppression, and drought all have been linked to increasing wildfire frequency and severity. Developing effective mitigation strategies is a challenging problem, especially on vast tracts of federally-managed wildlands in the western U.S. Fuel reduction activities on Federal lands are generally difficult to plan and implement due to cost, public expectations, and land management regulations. State of the art wildfire modeling is frequently required to demonstrate the benefits of fuels reduction treatments and …

Developing A Science Integration Strategy For Jfsp, Jamie Barbour

JFSP Research Project Reports

The mission of the Joint Fire Science Program (JFSP) is to produce high quality research findings to inform wildland fire and fuel managers’ decisions. Since its inception in 1998, the program has funded nearly 400 studies and has generated a tremendous amount of information and analytical tools. As the JFSP moves into the future, a Science Delivery Strategy is needed to: 1) ensure that this base of information finds application, and 2) create a more systematic way to identify and organize new work that will encourage its rapid assimilation by the management community. The attached Science Delivery Strategy was developed …

Development And Demonstration Of Smoke Plume, Fire Emissions, And Preand Post-Prescribed Fire Fuel Models On North Carolina Coastal Plain Forest Ecosystems, Robert Meckler, Gary Achtemier, Chris Geron, Miriam Rorig, David Brownlie

JFSP Research Project Reports

The objectives are to (1) Inventory, map, and model live and down woody debris/fuels biomass utilizing USDA Forest Service Forest Inventory and Analysis P2 and P3 field plot protocols, develop fuel loading formulas for fire behavior models in the Alligator River National Wildlife Refuge and the Air Force Dare County Bombing Range in the North Carolina Coastal Plain, and incorporate data from Coastal Plain forest types into the fuel characteristic classification (FCC) system and the FARSITE fire behavior model; (2) Validate the USDA Forest Service PB-Coastal Plain smoke model, the BlueSky smoke prediction system, and the BlueSky Rapid Access Information …

Soil Response To Season And Interval Of Prescribed Fire In A Ponderosa Pine Forest Of The Blue Mountains, Oregon, D. Zabowski, W. G. Thies, J. Hatten, A. Ogden

JFSP Research Project Reports

Soil properties were examined at a season of burn and burn interval study located in the Malheur National for responses to prescribed burns used to reduce fuel loads and wildfire hazard. Prescribed burn comparisons included spring vs. fall burning, with either one 15-year interval burn or two 5-year interval burns of each season. Results showed that major change to soil organic matter was a reduction in the amount of O horizon. The percent bare ground increased with both spring and fall burning and was highest with multiple burns, indicating a loss of O horizon cover. There was also a decrease …

Digital Photo Series (Natural Fuels Photo Series), Clinton S. Wright, Robert E. Vilnakek, Roger D. Ottmar, Paige C. Eagle

JFSP Research Project Reports

The Digital Photo Series (DPS) is a web-based application that provides access to the Natural Fuels Photo Series database and photographs. The DPS works through a user’s internet browser, but has also been designed to work as a stand-alone application when the computer is disconnected from the internet. A user-friendly interface allows users to browse, query, and download photo series data and high-quality photographs. The Digital Photo Series is intended to complement, not replace, the printed photo series volumes.

A Comprehensive Guide To Fuels Treatment Fractices For Ponderosa Pine In The Black Hills, Colorado Front Range, And Southwest, M. E. Hunter, W. D. Shepperd, L. B. Lentile, J. E. Lundquist, M. G. Andreu, J. L. Butler, F. W. Smith

JFSP Research Project Reports

The objective of this paper is to present recommendations for fuels treatments in ponderosa pine forests in the Southwest, Colorado Front Range, and Black Hills of South Dakota. We have synthesized existing knowledge from the peer-reviewed literature and administrative studies and acquired local knowledge through a series of discussions with fuels treatment practitioners. We describe specific treatments, the circumstances under which they can be applied, and treatment effects. We provide recommendations related to where, how, and how often fuels treatments may be prescribed to achieve desired outcomes. Desired outcomes address social, political, economic, and ecological factors.

Effects Of Fire On Kuenzler’S Hedgehog Cactus (Echinocereus Fendleri Var. Kuenzleri), David B. Wester, Colton M. Britton

JFSP Research Project Reports

Kuenzler’s cactus (Echinocereus fendleri var. kuenzleri [Castetter, Pierce and Schwerin] L. Benson]) is a federally- and state-listed endangered species that is known to occur in pinyon-juniper habitat in the mountains of south central New Mexico in Lincoln, Otero, Chaves and Eddy counties. Presence of this species affects the management of its habitat with prescribed burning. However, there has been no research that has documented the response of Kuenzler’s cactus to fire. This project was initiated in 2002 to provide information on habitat characteristics of Kuenzler’s cacti and to investigate its response to fire. Because of the protected status of the …

Interactions Among Prescribed Fire, Soil Attributes, Fungal Mats, And Mycorrhizal Fungus Fruiting Patterns In An Old-Growth Pinus Ponderosa / Abies ConcolorStand In Crater Lake National Park, Oregon, Usa, Kermit Cromack, Randy Molina, Jane E. Smith, James M. Trappe, Efren Cazares-Gonzales, Mary Rasmussen, Matt Trappe

JFSP Research Project Reports

The first of its kind, Soil characteristics tend to occur as a suite, Pre-treatment patterns: a silver lining, Prescribed burn treatment effects on soil attributes, Fruiting patterns primarily influenced by soil C:N ratios, Fungal indicator guilds, Prescribed burn treatment effects on fungal fruiting patterns, Prescribed burn treatment effects on fungal mats, Summary and take-home message.

Soil Response To Season And Interval Of Prescribed Fire In A Ponderosa Pine Forest Of The Blue Mountains, Oregon, D. Zabowski, W. G. Thies, J. Hatten, A. Ogden

JFSP Research Project Reports

Soil properties were examined at a season of burn and burn interval study located in the Malheur National for responses to prescribed burns used to reduce fuel loads and wildfire hazard. Prescribed burn comparisons included spring vs. fall burning, with either one 15-year interval burn or two 5-year interval burns of each season. Results showed that major change to soil organic matter was a reduction in the amount of O horizon. The percent bare ground increased with both spring and fall burning and was highest with multiple burns, indicating a loss of O horizon cover. There was also a decrease …

Effects Of Fire Severity And Distance From Unburned Edge On Mammalian Community Post-Fire Recovery, Jay Diffendorfer, Wayne Spencer, Scott Tremor, Jan Beyers

JFSP Research Project Reports

This final report summarizes key findings relative to the five major objectives listed in our proposal, along with the crosswalk of accomplished and future deliverables. Additional details concerning objectives, methods, results, and recommendations are presented in Attachment A. Each of our major objectives is listed below with a brief summary of findings to date. Because we only recently finished the final session of data collection, all findings are preliminary and may change as more comprehensive statistical analyses are completed. 1. Evaluate the effects of fire on southern California rodent, large mammal, and bat diversity and study patterns of post fire …

Effects Of Fuel Treatments And Wildfire On The Avifauna Of The Pine Rockland Ecosystem In Southern Florida., John D. Lloyd, Gary L. Slater, Skip Snow, James R. Snyder

JFSP Research Project Reports

The response of plants and animals in the pine forests of southern Florida to variation in fire and hydrological regimes remains inadequately described, hindering the ability of resource managers to manipulate fire and water to achieve desired ecological outcomes. In this study, we took advantage of natural variation in two measures of fire history (the number of days since last fire and the number of times an area had been burned during the previous ten years) and one measure of hydrology (water table elevation) to explore how plants, breeding birds, and wintering birds in slash-pine (Pinus elliottii var. densa) forests …

Fuels Reduction In A Western Coniferous Forest: Effects On Two Sympatric Ungulates And Their Habitat, Ryan A. Long, Janet Rachlow, Marty Vavra, John G. Kie

JFSP Research Project Reports

We evaluated effects of an experimental fuels reduction program on elk, mule deer, and their habitat at the Starkey Experimental Forest and Range (Starkey) in northeastern Oregon. From 2001 to 2003, 26 stands of true fir and Douglas-fir that suffered high rates of mortality from an outbreak of spruce budworm were selectively thinned (spring or summer) and burned (fall) while 27 similar stands were left untreated to serve as experimental controls. We used location data for elk and mule deer collected during spring (1 April–14 June) and summer (15 June–31 August) of 1999–2006 to compare use of treated and untreated …

El Mundo Entero Es Nuestro Bosque: Política Forestal Y Cooperación Internacional, Pablo Martínez De Anguita

Yale School of the Environment Bulletin Series

No abstract provided.

Forest-Floor Treatments In Arizona Ponderosa Pine Restoration Ecosystems: No Short-Term Effects On Plant Communities, Scott R. Abella, W. Wallace Covington

Public Policy and Leadership Faculty Publications

Leaf litter accumulation during fire exclusion and increases in tree density in postsettlement southwestern Pinus ponderosa forests may limit the establishment of understory vegetation. We performed an experiment in P. ponderosa forests of northern Arizona to ascertain plant community responses to forest-floor scarification and Oi removal on thirty-six 100-m2 plots overlaid on an existing ecological restoration experiment that involved tree thinning and prescribed burning. Constrasting with findings from many other forest types, forest-floor treatments had no effect on community diversity or composition during the 2-year experiment. Sørensen similarities were as high as 97% between posttreatment years within treatments; and successional …

Wind Damage And Salinity Effects Of Hurricanes Katrina And Rita On Coastal Baldcypress Forests Of Louisiana, William Conner, Thomas W. Doyle, Richard H. Day, Ken W. Krauss, Christopher M. Swarzenski

Publications

The frequency of hurricane landfall in a given coastal stretch may play a more important role in the ecology of coastal forests than previously thought because of direct and indirect impacts of fallen trees and the introduction of salt water that lingers long after the storm passes. Findings show that surge events can inundate interior freshwater forests many miles from the coast and elevate soil salinities twofold to threefold. These elevated salinities may contribute to delayed mortality of certain tree species and set the stage for eventual forest decline and dieback.

Past, Present, And Future Old Growth In Frequent-Fire Conifer Forests Of The Western United States, Scott R. Abella, W. Wallace Covington, Peter Z. Fule, Leigh B. Lentile, Andrew J. Sanchez Meador, Penelope Morgan

Public Policy and Leadership Faculty Publications

Old growth in the frequent-fire conifer forests of the western United States, such as those containing ponderosa pine (Pinus ponderosa), Jeffrey pine (P. jeffreyi), giant sequoia (Sequioa giganteum) and other species, has undergone major changes since Euro-American settlement. Understanding past changes and anticipating future changes under different potential management scenarios are fundamental to developing ecologically based fuel reduction or ecological restoration treatments. Some of the many changes that have occurred in these forests include shifts from historically frequent surface fire to no fire or to stand-replacing fire regimes, increases in tree density, increased abundance of fire-intolerant trees, decreases in understory …

Relative Role Of Understory And Overstory In Carbon And Nitrogen Cycling In A Southern Appalachian Spruce-Fir Forest, P. T. Moore, H. Van Miegroet, N. S. Nicholas

Watershed Sciences Faculty Publications

This study investigated aboveground pools and fluxes of biomass, carbon (C), and nitrogen (N) in the overstory and understory of a southern Appalachian red spruce (Picea rubens Sarg.) – Fraser fir (Abies fraseri (Pursh) Poir.) forest, following adelgid-induced fir mortality and spruce windthrow. Using fifty 20 m × 20 m plots, stratified by elevation (1700–1900 m), we estimated standing biomass and fluxes of all growth forms from periodic stand inventories (1998–2003), vegetation surveys, and existing or derived allometric equations. Total C and N pools and fluxes were calculated from plant- and tissue-specific C and N concentrations. Total aboveground biomass attained …

Soil Organic Carbon Dynamics Along A Climatic Gradient In A Southern Appalachian Spruce-Fir Forest, C. E. Tewksbury, H. Van Miegroet

Watershed Sciences Faculty Publications

A field study was conducted in a high-elevation spruce–fir (Picea rubens Sarg. – Abies fraseri (Pursh.) Poir) forest in the Great Smoky Mountains National Park to assess the effect of temperature on soil C storage and dynamics. In eight plots along an elevation gradient (1500–1900 m), we measured soil temperature, forest floor and mineral soil C, litter decomposition, soil respiration, and forest floor mean residence time. Mean annual soil temperature and annual degree-days above 5 °C were inversely correlated with elevation. Total soil C (166–241 Mg·ha–1) showed no trend with elevation, while forest floor C accumulation (16.3–35.9 Mg·ha–1) decreased significantly …

Early Life Stage Characteristics Of Six Acadian Conifer Species: Germination And Seedling Development In A Changing Climate, Jason D. Schatz

Electronic Theses and Dissertations

Global climate change will drastically alter regional climates. The influence of these changes on the distribution and relative abundance of forest trees is both critically important and subject to substantial uncertainty. It will be particularly important to understand the effects of different climate scenarios on the early life stages of major tree species, because: 1) Early life stage performance and survival strongly influence the abundance of mature trees of a given species, 2) Trees are most sensitive to environmental variation during their early life stages, and 3) Our knowledge of the response of Acadian Forest tree species to environmental variation …

Forging A Common Vision For Maine’S North Woods, Robert J. Lilieholm

Maine Policy Review

Robert Lilieholm takes stock of the challenges and opportunities facing Maine’s North Woods, the largest undeveloped forested block in the eastern United States. In the face of changing ownership patterns and development pressures, there is lively debate over current land use policies and trends. Lilieholm suggests that a broader, regional vision for the North Woods might better serve the long-term interests of both the area’s forests and its struggling communities.

Are The Economics Of A Sustainable Maine Forest Sustainable?, Mike Levert, Charles S. Colgan, Charles Lawton

Maine Policy Review

Mike LeVert, Charles Colgan and Charles Lawton discuss the transformation of the economic environment of Maine’s forests over the past two decades. Paper companies have sold most of their holdings; residential and conservation demand for land has increased; forestland prices have skyrocketed; and new classes of landowners have different strategies, objectives, and time horizons than the old industrial landowners. The authors believe that management of Maine’s forests must now address changes in the economic environment with the same intensity as threats such as the spruce budworm were addressed if we are to keep Maine’s forests as forests.