Life Sciences Commons^™

Integrating Landscapes That Have Experienced Rural Depopulation And Ecological Homogenization Into Tropical Conservation Planning, Aerin L. Jacob, Ismael Vaccaro, Raja Sengupta, Joel N. Hartter, Colin A. Chapman

Geography

If current trends of declining fertility rates and increasing abandonment of rural land as a result of urbanization continue, this will signal a globally significant transformation with important consequences for policy makers interested in conservation planning. This transformation is presently evident in a number of countries and projections suggest it may occur in the future in many developing countries. We use rates of population growth and urbanization to project population trends in rural areas for 25 example countries. Our projections indicate a general decline in population density that has either occurred already (e.g., Mexico) or may occur in the future …

Threats To The Robert B. Gordon Area For Environmental Studies (Gna), West Chester University Of Pennsylvania

Gordon Natural Area History & Strategic Plan Documents

No abstract provided.

Ltreb: Forest Ecosystem Response To Changes In Atmospheric Chemistry And Climate At The Bear Brook Watershed In Maine (Bbwm), Ivan J. Fernandez, Stephen A. Norton, Lindsey Rustad

University of Maine Office of Research Administration: Grant Reports

The Bear Brook Watershed in Maine (BBWM) is a long-term paired, forested watershed research site with each watershed drained by a first order stream through a v-notch weir. One watershed (West Bear) has been treated bimonthly for 12 years with N and S by aerial helicopter applications, with the second watershed (East Bear) serving as the reference watershed. The objectives of this LTREB proposal are to:

1. Study the response of the calibrated East Bear Watershed to long-term patterns of ambient S, N, and base cation deposition. This will be accomplished by maintaining high quality deposition and stream export data …

Pb1679 Forest - A - Syst: Self-Assessment To Prioritize Your Forest Uses, The University Of Tennessee Agricultural Extension Service

Forestry, Trees, and Timber

You are unique. The title “Forest Landowner” is one not held by many Tennesseans. Your ownership carries with it a sense of treasure, of enjoyment, of wildness. But it’s also a privilege, one that imparts responsibility, one that can be observed and one that increasingly can be measured.

If you were to be judged on your forestry practices, how would you score? Would you even know which parameters to assess or what questions to ask? Which of these forest uses aesthetics, recreation, soil, timber, water, wildlife—are more important? Have you ever intelligently, and intentionally, began a planning process for your …

Managing Gambel Oak In Southwestern Ponderosa Pine Forests: The Status Of Our Knowledge, Scott R. Abella

Public Policy and Leadership Faculty Publications

Gambel oak (Quercus gambelii) is a key deciduous species in southwestern ponderosa pine (Pinus ponderosa) forests and is important for wildlife habitat, soil processes, and human values. This report (1) summarizes Gambel oak’s biological characteristics and importance in ponderosa pine forests, (2) synthesizes literature on changes in tree densities and fire frequencies since Euro-American settlement in pine-oak forests, (3) suggests management prescriptions for accomplishing various oak management objectives (for example, increasing diameter growth or acorn production), and (4) provides an appendix containing 203 Gambel oak literature citations organized by subject. Nine studies that reconstructed Gambel oak density changes since settlement …

Gordie News, November/December 2008, West Chester University Of Pennsylvania

Gordon Natural Area History & Strategic Plan Documents

No abstract provided.

Black Bears On The Way Back, Christopher E. Comer

Faculty Publications

No abstract provided.

Red-Cockaded Woodpeckers And Hurricanes, Zoe Hoyle

Faculty Publications

No abstract provided.

Gordie News, October 2008, West Chester University Of Pennsylvania

Gordon Natural Area History & Strategic Plan Documents

No abstract provided.

Variations In Stomatal Traits Of 14 Bornean Tree Species Growing On Soils With Different Moisture Contents In Lambir Hills National Park, Whitney Logan Cannon

Department of Environmental Studies: Undergraduate Student Theses

The goal of this study was to look at variations in stomatal traits of tree species on soils with different moisture contents and fertility at Lambir Hills National Park. Stomates are important structures on the surface of leaves that mediate conduction of moisture and gassesin and out of the leaf. If stomatalt raits are important for regulation, then there should be variation in stomatal traits in regards to their soil specialization. The 14 Borneant ree speciess ampledi ncluded6 sandyl oam specialists6, clay specialistsa nd 2 generalistsfo und growing with equald istributionso n both sandyl oam and clay. Confocal microscopy was …

Meeting Minutes, September 19th, 2008, National Smokejumper Association Board Of Directors

National Smokejumper Association Meeting Minutes

Agenda: Meeting to order at 0830.; Introductions.; 2009 meeting dates added to agenda as was representative of NSA at the reunion.; RAC Base Update.; Minutes of last meeting.; Treasurers report.; Balance sheet.; We have a new stock investment Bank of Delaware.; Budget.; Brief discussion of the Boise reunion net income.; Audit committee.; Merchandising report.; Western Heritage selling NSA smokejumper history video.; Left Hand brewing will be brewing another batch of smokejumper ale in November.; Investments.; Membership.; Liability insurance.; Trails.; Evergreen.; History.; Mission.; What is our plan to remain solvent financially?.; NSA being an advocate under the terms of our 501.c.3.; …

Pb1756 The All Season Pocket Guide To Identifying Common Tennessee Trees, The University Of Tennessee Agricultural Extension Service

Forestry, Trees, and Timber

This booklet was prepared by professional foresters to help you identify Tennessee’s most common trees. It is designed to go to the woods with you (where it is needed) by comfortably riding in your back pocket, pack or cruiser’s jacket. Enjoy!

Gambel Oak Growth Forms: Management Opportunities For Increasing Ecosystem Diversity, Scott R. Abella

Public Policy and Leadership Faculty Publications

Gambel oak (Quercus gambelii) clones have several different growth forms in southwestern ponderosa pine (Pinus ponderosa) forests, and these growth forms each provide unique wildlife habitat and resource values. The purposes of this note are to review published growth-form classifications for Gambel oak, provide examples of ecological effects of different growth forms, and summarize management strategies for promoting desired growth forms. Four different growth-form classifications have been published, which generally recognize variants of three basic forms: shrubby thickets of small-diameter stems, pole-sized clumps, and large trees. These growth forms exemplify ecological and management tradeoffs. For example, shrubby forms provide browse …

Changes In Gambel Oak Densities In Southwestern Ponderosa Pine Forests Since Euro-American Settlement, Scott R. Abella, Peter Z. Fule

Public Policy and Leadership Faculty Publications

Densities of small-diameter ponderosa pine (Pinus ponderosa) trees have increased in southwestern ponderosa pine forests during a period of fire exclusion since Euro-American settlement in the late 1800s. However, less well known are potential changes in Gambel oak (Quercus gambelii) densities during this period in these forests. We reviewed published literature to summarize changes in oak density in ponderosa pine forests over the past 140 years and evaluated the possibility that large-diameter oaks have decreased in density. All nine studies examining oak density changes found that densities of small-diameter oaks have escalated. Increases ranged from 4- to more than 63-fold. …

Estimating Soil Seed Bank Characteristics In Ponderosa Pine Forests Using Vegetation And Forest-Floor Data, Scott R. Abella, Judith D. Springer

Public Policy and Leadership Faculty Publications

Soil seed banks are important for vegetation management because they contain propagules of species that may be considered desirable or undesirable for site colonization after management and disturbance events. Knowledge of seed bank size and composition before planning management activities facilitates proactive management by providing early alerts of exotic species presence and of abilities of seed banks to promote colonization by desirable species. We developed models in ponderosa pine (Pinus ponderosa) forests in northern Arizona to estimate the size and richness of mineral soil seed banks using readily observable vegetation and forestfloor characteristics. Regression models using three or fewer predictors …

Plant Recruitment In A Northern Arizona Ponderosa Pine Forest: Testing Seed- And Leaf Litter- Limitation Hypotheses, Scott R. Abella

Public Policy and Leadership Faculty Publications

Seed availability and leaf litter limit plant establishment in some ecosystems. To evaluate the hypothesis that these factors limit understory plant recruitment in Pinus ponderosa forests, I conducted a seeding and litter removal experiment at six thinned sites in the Fort Valley Experimental Forest, northern Arizona. Experimental seeding of four native species (Penstemon virgatus, Erigeron formosissimus, Elymus elymoides, and Festuca arizonica) and raking of litter occurred in 2005. Seeding resulted in a substantial recruitment of 14 to 103 seedlings/m2 (1 to 10/ft2) one month after seeding for two species (P. virgatus and E. elymoides), but these densities subsequently declined by …

Gordie News, August/September 2008, West Chester University Of Pennsylvania

Gordon Natural Area History & Strategic Plan Documents

No abstract provided.

Working Trees For Livestock

Working Trees (USDA-NAC)

Working Trees protect livestock from the stressful effects of winter and offer relief in the summer. They can also create diversified income opportunities.

Conventional wisdom in the past has been that livestock and trees can’t co-exist. Yet moderm agricultural practice is showing their livestock and trees not only can co-exist, but, if properly managed, can provide additional income from land formerly used for a single crop.

Trees can provide livestock with protection from cold wind and blowing snow in winter, as well as from the hot sun and drying winds of summer. And, if commercially desirable timber or nut trees …

Working Trees For Agriculture

Working Trees (USDA-NAC)

Working Trees help make agricultural systems more sustainable by protecting crops and livestock, conserving natural resources, improving human environments, and providing sources of income.

Putting trees to work in conservation and production systems for farms, ranches, and nearby communities means planting the right trees, in the right places, and in the correct design to achieve desired objectives.

Agroforestry is a unique land management approach for landowners and anyone who cares about working lands and natural resources. Agroforestry practices provide opportunities to integrate productivity and profitability with environmental stewardship and result in healthy and sustainable agricultural systems that can be passed …

Working Trees: Silvopasture, An Agroforestry Practice

Working Trees (USDA-NAC)

Silvopasture integrates trees, livestock, and forage into a single system on one site.

These components diversify income sources. Annual income from grazing and long-term profits from trees respond to different market pressures and reduce risk when combined in the same operation.

Shade from the trees lengthens the forage growing season and improves forage quality. It also increases the comfort level for livestock which reduces stress.

The structure and plant diversity of silvopastures is attractive to many wildlife species including wild turkey, quail, deer, and many songbirds.

Silvopastures are inherently sustainable systems. They increase biological diversity, protect water quality, reduce soil …

Working Trees For Community

Working Trees (USDA-NAC)

Working Trees for Communities is the adaptation of agroforestry technologies to assist communities of all sizes achieve environmental, social, and economic goals, especially at the rural/urban interface.

Today, communities are challenged with accommodating new growth while maintaining the integrity of existing neighborhoods. Accommodating health, safety, transportation, quality of life, economics, environmental quality, and infrastructure development can often lead to land use conflicts. Compromises are often needed to achieve a workable plan.

Today, community residents, businesses, rural landowners, and local leaders must look beyond their own backyards. What is done by one resident or business can affect the community and the …

Meeting Minutes, June 13th, 2008, National Smokejumper Association Board Of Directors

National Smokejumper Association Meeting Minutes

Agenda: Introductions.; Welcome.; Minutes of the last meeting.; Minutes approved as read.; Treasurer's Report.; Current year budget.; Life Membership.; Investment Report.; Trail Maintenance.; Mann Gulch project.; Merchandise Committee Report.; Audit Committee Membership Selection.; Memorial Life Membership Selections.; Membership Committee.; Proposals Needing Board Discussion.; Vision Statement.; NSA Core Values.; NSA Mission.; NSA Goals.; Good Samaritan Fund.; Starting place for discussion at our upcoming NSA Board meeting.; The following issues need to be discussed by the NSA Board to establish additional parameters for providing aid to those in need.;

Seed Invasion Filters And Forest Fire Severity, Tom R. Cottrell, Paul F. Hessburg, Jonathan A. Betz

Biology Faculty Scholarship

Forest seed dispersal is altered after fire. Using seed traps, we studied impacts of fire severity on timing of seed dispersal, total seed rain, and seed rain richness in patches of high and low severity fire and unburned Douglas-fir (Pseudotsuga menziesii) forests in the Fischer and Tyee fire complexes in the eastern Washington Cascades. Unburned plots had the lowest average seed production. The high severity fire patches in the Fischer Fire Complex had a higher total seed production than low severity fire patches of the same complex. At the Tyee Fire Complex, the total seed production for each …

Gordie News, June/July 2008, West Chester University Of Pennsylvania

Gordon Natural Area History & Strategic Plan Documents

No abstract provided.

Forecasting Effects Of Sea‐Level Rise And Windstorms On Coastal And Inland Ecosystems, Charles S. Hopkinson, Ariel E. Lugo, Merryl Alber, Alan P. Covich, Skip J. Van Bloem

Publications

We identify a continental‐scale network of sites to evaluate how two aspects of climate change – sea‐level rise and intensification of windstorms – will influence the structure, function, and capacity of coastal and inland forest ecosystems to deliver ecosystem services (eg carbon sequestration, storm protection, pollution control, habitat support, food). The network consists of coastal wetland and inland forest sites across the US and is representative of continental‐level gradients of precipitation, temperature, vegetation, frequency of occurrence of major windstorms, value of insured properties, tidal range, watershed land use, and sediment availability. The network would provide real‐time measurements of the characteristics …

Transient Physiological Responses Of Planting Frozen Root Plugs Of Douglas-Fir Seedlings, M. Anisul Islam, Douglass F. James, Kent G. Apostol, A. Kasten Dumroese

USDA Forest Service / UNL Faculty Publications

Short-term physiological responses of planting frozen (FR) and rapidly thawed (TR) root plugs of Douglas-fir (Pseudotsuga rnenziesii (Mirb.) Franco) seedlings were examined through time series (0 h, 6 h, 12 h, 1 day, 3 days, and 7 days) measurements in two separate experiments: 10 °C day : 6 °C night, RH 75% and 30 °C day : 20 °C night, RH 50%, respectively. Net photosynthesis, transpiration, shoot water potential, and root hydraulic conductance were lower in FR compared with TR seedlings under both growing conditions. Magnitude of difference in root hydraulic conductance was higher under warm-dry conditions. Chlorophyll fluorescence …

Gordie News, May 2008, West Chester University Of Pennsylvania

Gordon Natural Area History & Strategic Plan Documents

No abstract provided.

Water Resources Impact - Volume 10, Number 3, May 2008

USDA Forest Service / UNL Faculty Publications

FEATURE ARTICLES:
3 Riparian Ecosystems and Buffers: Working at the Water’s Edge ... Albert H. Todd Introduces the dynamic interrelationship between streams and the lands through which they pass, and the role buffers play today.

6 Riparian Zones: They Aren’t Just for Buffers Any More ... Mark P. Smith, Roy Schiff, and Jeff Opperman Describes the active river area as a dynamic and useful framework for managing critical river and riparian ecosystems

9 Living Shorelines: Restoring Multi-Function Buffers on Coastal Shorelines ... William G. Reay and Scott Lerberg Living Shoreline design offers a comprehensive solution to anthropogenic degradation of coastal …

Marketing Of Forest Reproductive Material: The Use Of Microsatellites For Identification Of Registered Tree Clones In Finland, Leena Koviuranta, Kari Leinonen, Pertti Pulkkinen

Aspen Bibliography

According to the current legislation on the marketing of forest reproductive material, tree clones marketed in the EU must have certain traits which make them identifiable, and these traits must have been accepted and registered by an official body. Due to this obligation, there is a need for reliable, functional and practicable methods for specifying these distinctive characters. We have developed a clone identification method for European and hybrid aspens and curly birch, based on nuclear microsatellites, which can be used for determining the distinctive characters mentioned in the directive. For aspens, we have used 18 loci, of which nine …

Forest Nursery Notes

USDA Forest Service / UNL Faculty Publications

Contents:

Nursery Meetings

Maintaining Stock Quality After Harvesting by Thomas D. Landis and Diane Haase

Root Culturing in Bareroot Nurseries by Thomas D. Landis

Mechanical Root Pruning in Container Nurseries by Thomas D. Landis and Don Willis

Hot-planting Opens New Outplanting Windows at High Elevations and Latitudes by Thomas D. Landis and Douglass F. Jacobs

Horticultural Humor

New Nursery Literature:
NEW PROCEDURE—ELECTRONIC COPIES ONLY
Bareroot Production
Container Production
Business Management
Diverse Species
Fertilization and Nutrition
General and Miscellaneous
Nursery Structures And Equipment
Genetics and Tree Improvement
Mycorrhizae and Beneficial Microorganisms
Outplanting Performance
Pest Management
Pesticides
Seedling Physiology And Morphology
Seeds …