Forest Sciences Commons^™

Modification Of Water Vapor Diffusion In Poplar Wood (Populus Nigra L.) By Steaming At High Temperatures, Maedeh Sayar, Asghar Tarmian

Turkish Journal of Agriculture and Forestry

In this investigation, the effect of steaming on the water vapor diffusion coefficient of poplar wood (Populus nigra L.) was studied. Boards with dimensions of 50 × 50 × 150 (W × H × L) mm3 and average moisture content of 12% were steamed at temperatures of 120, 140, 160, and 180 ^°C for 1, 2, and 3 h. The diffusion coefficients were then measured based on Fick's law of diffusion in steady-state conditions using the cup method. Results showed that the steaming of poplar wood at all mentioned temperatures can decrease the water vapor diffusion coefficient. However, no further …

Phenolic Composition And Antioxidant Activity Of Salvia Tomentosa Miller: Effects Of Cultivation, Harvesting Year, And Storage, Cüneyt Di̇nçer, İsmai̇l Tontul, İhsan Burak Çam, Kübra Sultan Özdemi̇r, Ayhan Topuz, Hi̇lal Şahi̇n Nadeem, Saadet Tuğrul Ay, Ramazan Süleyman Göktürk

Turkish Journal of Agriculture and Forestry

Salvia tomentosa is a common medicinal plant, and it is consumed as an herbal tea in some Mediterranean countries. It has been extensively collected from its natural habitat, and careless collection has caused the recent extinction of some plants. The present study was undertaken to cultivate S. tomentosa and compare the phenolic composition and antioxidant properties of wild and cultivated plants. Total phenolics, total flavonoids, and antioxidant activity of S. tomentosa ranged between 49.27 and 66.15 mg GAE g^{-1} dry weight (dw), 36.27 and 40.83 mg catechin g^{-1} dw, and 1.77 and 2.29 mg dw mg^{-1} DPPH, respectively. Total phenolic …

Combustion Properties Of Medium-Density Fiberboards Coated By A Mixture Of Calcite And Various Fire Retardants, Abdullah İstek, Deni̇z Aydemi̇r, Hüdaverdi̇ Eroğlu

Turkish Journal of Agriculture and Forestry

In this study, we investigated the effect of fire retardants (FRs) on the combustion performance of medium-density fiber boards (MDFs) that were coated with mixtures of water, binder, calcite, and various FRs (FR coatings). We used MDF panels, calcite as the coating pigment, melamine formaldehyde as the binder, and FRs, including borax (BX), boric acid (BA), and zinc borate (ZB), to investigate the effects on the properties of the test boards. According to the results of combustion properties of coated MDFs with FR coatings, BA presented the highest stability, followed by BX and ZB, respectively. It was also found that …

Arbuscular Mycorrhizal Fungi Associated With Tree Peony In 3 Geographic Locations In China, Zhaoyong Shi, Yinglong Chen, Xiaogai Hou, Shuangcheng Gao, Fayuan Wang

Turkish Journal of Agriculture and Forestry

The diversity of arbuscular mycorrhizal fungi (AMF) is of great interest because of their potential function in ecosystems. Tree peony is an important traditional ornamental and medicinal plant with economic significance. We examined the mycorrhizal status of the rhizosphere of 14 common cultivars of tree peony (Paeonia suffruticosa) in 3 different geographic locations in China. Root samples of all cultivars were colonized by AMF. The mean percentage of root length colonization, vesicles, and arbuscules were 39%, 3.6%, and 6.0%, respectively. AMF species richness varied from 5 to 11, and spore density ranged from 20 to 61 per 50 g of …

In Vitro Rooting And Biochemical Parameters In The Cherry Rootstocks Cab-6p And Gisela 6 Using L-Methionine, Virginia Sarropoulou, Kortessa Dimassi-Theriou, Ioannis Therios

Turkish Journal of Agriculture and Forestry

In the present study, the effects of indole-3-butyric acid (IBA) alone and in combination with L-methionine were investigated on the morphogenic and biochemical responses in the shoot tip explants of the cherry rootstocks CAB-6P (Prunus cerasus L.) and Gisela 6 (Prunus cerasus × Prunus canescens). The best results for roots, regarding their number and the fresh and dry weight, were obtained with 2 mg L^{-1} IBA in both rootstocks. Maximum rooting percentage was with the combination of 2 mg L^{-1} IBA and 0.5 mg L^{-1} L-methionine. Root length was greatest in the control plants. L-methionine had an inhibitory effect on …

Survey Of Apple Mosaic Virus In Apple-Growing Provinces Of East Anatolia (Malatya And Van) By Rna Probe Hybridization Assay And Rt-Pcr, Gülüstan Korkmaz, Hi̇kmet Murat Si̇pahi̇oğlu, Mustafa Usta

Turkish Journal of Agriculture and Forestry

Two main apple growing provinces (Van and Malatya) of East Anatolia were surveyed for the presence of the Apple mosaic virus (ApMV). Dot-blot hybridization and RT-PCR tests were implemented to investigate the incidence of ApMV, testing a total of 481 samples collected from commercial apple orchards. Digoxigenin-labeled RNA probes of the ApMV were synthesized from the cloned PCR products and applied in dot-blot hybridization to detect the virus in RNA extracts isolated from fresh leaf tissues. A validated RNA probe (dot-blot) hybridization method was adopted to investigate the presence of ApMV infections in the apple orchards of East Anatolia. In …

Physicochemical And Sensory Properties Of Mulberry Products: Gümüşhane Pestil And Köme, Oktay Yildiz

Turkish Journal of Agriculture and Forestry

'Pestil' and 'köme', well known as traditional Turkish foods, are prepared from a mulberry, honey, walnut, hazelnut, and flour mixture. Although they have been produced for the last few decades on an industrial scale, the production methods and properties of the products are not standardized yet. Gümüşhane pestil and köme have been registered and attained Geographical Registration Certificates from the Turkish Patent Institute with their unique production methods and properties, among many similar products in the world markets. Thus, some biochemical, physical, and sensory properties of pestil and köme were investigated. In addition, the main raw material (mulberry) and semifinished …

Sustainable Approach To Produce Bioethanol From Karanja (Pongamia Pinnata) Oilseed Residue, Pooja Doshi, Gopal Srivastava

Turkish Journal of Agriculture and Forestry

Agricultural biomass is the world's largest, most sustainable, and most promising renewable energy source. This study investigated the potential of Karanja (Pongamia pinnata) oilseed residual waste (defatted kernel, hull, and their mixture) as a source of ethanol. The pretreatment of the finely ground samples was carried out using dilute sulfuric acid (0.5%) hydrolysis at a higher temperature of 121 °C and 15 psi pressure for 90 min. The pretreatment usually removes the lignin and facilitates the hydrolysis of cellulose and hemicelluloses. They were further hydrolyzed using 5% H_2SO_4 at 50 °C for 70 h. The analyses of hydrolyzed products have …

Variations In Wildfire Ash Properties And Implications For Post-Fire Hydrological Response Within Western North American Ecosystems, Victoria Balfour

Graduate Student Theses, Dissertations, & Professional Papers

Within the Rocky Mountain region of the Western U.S.A the average number of wildfires over 40 hectares have quadrupled and the frequency of large wildfires (> 4,000 hectares) have increased seven times since the 1970’s. The effect of this increase on resource management and ecosystem function is of increased interest to agencies and land managers within the region. The research presented in this dissertation aimed to contribute to the growing knowledge of post-fire hydrology, specifically with regards to the role of wildfire ash within recently burned ecosystems. Ash should not be considered a generic term, as it is an important …

A Spatially-Explicit Decision Support System For Invasive Weed Species Management, Pablo Aracena

Graduate Student Theses, Dissertations, & Professional Papers

Invasive weed species are a recognized problem worldwide causing economic and environmental problems. Management of weeds is complex and challenging because of multiple decisions that need to be made when allocating limited resources to control current infestation areas including which weeds to treat, where to treat, how to treat, and when to treat. Models have been developed to simulate weed spread, however they lack the ability to simulate the short term effects of weed treatments and analyze trade-offs among control allocation options. This trade-off analysis is critical in developing cost-efficient treatment decisions especially when available budget for treatments is limited. …

Quantifying Carbon Allocation To Mycorrhizal Fungi By Temperate Forest Tree Species Across A Nitrogen Availability Gradient, Shersingh Joseph Tumber-Davila

Honors Theses and Capstones

Terrestrial ecosystems make up the largest carbon pool with a major portion of that being forests. With carbon being a major concern due to global climate change, being able to make accurate models is increasingly important. Studies have shown that trees may allocate up to 50% of their photosynthetically fixed carbon underground; however these values haven’t been accurately quantified and underground carbon allocation has been historically overlooked. Mycorrhizal fungi may be a large portion of underground carbon allocation, as they have a symbiotic relationship with trees where they provide the plant with water and nutrients in return for sugars (carbon). …

The Effect Of Temperature On Seed Quality And Quantity In Crosses Between European (Populus Tremula) And Hybrid Aspens (P. Tremula X P. Tremuloides), L. Koviuranta, T. Latva-Karjanmaa, P. Pulkkinen

Aspen Bibliography

Hybrid aspen (Populus tremula L. Populus tremuloides Michx.) plantations are expanding in Fennoscandia and the Baltic countries; however, the possible effects of plantations on the native European aspen (P. tremula) and the level of gene flow between European and hybrid aspen have not been investigated. We studied seed quantity and quality in intraspecific and interspecific crosses of the European and hybrid aspens over a two year period. In order to study whether elevated temperatures due to climate change would benefit the species differently, we performed the crosses in different temperatures. In both years, interspecific crosses produced more seeds with higher …

Agenda: The Future Of Natural Resources Policy, University Of Colorado Boulder. Natural Resources Law Center

The Future of Natural Resources Policy (December 6)

This forum will provide a post-election perspective on some of the challenges and opportunities that natural resources, public lands, and energy policymakers in Washington are likely to face in the next four years. An expert panel will discuss the dynamics in the Department of the Interior, the Department of Agriculture, and Congress, and how their evolving policies are likely to affect Colorado in the coming years.

Moderator: Dean Phil Weiser, University of Colorado Law School

Panelists:

Jay Jensen, Associate Director for Land & Water Ecosystems, White House Council on Environmental Quality

Scott Miller, Visiting Assistant Professor, University of Colorado Law …

Background Reading: Department Of Agriculture, 2013 Budget Overview, United States. Forest Service, United States. Department Of Agriculture

The Future of Natural Resources Policy (December 6)

57 pages.

"Fiscal Year 2013 Budget Overview"

"February 2012"

"Background Reading"

The Future of Natural Resources Policy: This forum will provide a post-election perspective on some of the challenges and opportunities that natural resources, public lands, and energy policymakers in Washington are likely to face in the next four years. An expert panel will discuss the dynamics in the Department of the Interior, the Department of Agriculture, and Congress, and how their evolving policies are likely to affect Colorado in the coming years.

Smokejumper Obituary: Brizee, Harry (Missoula 1951), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Using Arcpy To Automate Making Thematic Map Books: Two Cases, Yanli Zhang, Daniel Unger, Jason Grogan, Brian P. Oswald, John Lanham

Faculty Publications

No abstract provided.

Effects Of Slash Pile Burning After Restoring Conifer- Encroached Aspen, Christa M. Dagley, John-Pascal Berrill, Stephanie Coppeto, Kyle Jacobson

Aspen Bibliography

Removal of conifers encroaching aspen stands has been advocated and is being practiced in the Lake Tahoe Basin (EIP Project #10080: Aspen Community Restoration Projects). In remote and roadless areas, thinning of conifers is generating large volumes of wood and pile burning is currently being implemented to handle this biomass on site. However, the effects of pile burning on aspen are unknown, and there is an urgent need for guidelines to support design of thinning treatment prescriptions; specifically burn pile size and safe distances from live aspen trees of any size to prevent injury.

The Influence Of Market Proximity On National Forest Hazardous Fuels Treatments, Max Nielsen-Pincus, Susan Charnley, Cassandra Moseley

Environmental Science and Management Faculty Publications and Presentations

The US Department of Agriculture Forest Service's focus on hazardous fuels reduction has increased since the adoption of the National Fire Plan in 2001. However, appropriations for hazardous fuels reduction still lag behind wildfire suppression spending. Offsetting fuels treatment costs through biomass utilization or by using innovative administrative mechanisms such as stewardship contracting are two approaches to stretching appropriated dollars further across the landscape. We use fuels treatment data (n = 8,451 locations) to ask how wood- processing infrastructure influences where and how much hazardous fuels treatments, biomass utilization, and stewardship contracting occur on national forests in Oregon and Washington. …

Long-Term Integrated Studies Show Complex And Surprising Effects Of Climate Change In The Northern Hardwood Forest, Peter M. Groffman, Lindsay E. Rustad, Pamela H. Templer, John L. Campbell, Lynn M. Christenson, Nina K. Lany, Anne M. Socci, Matthew A. Vadeboncoeur, Paul G. Schaberg, Geoffrey W. Wilson, Charles T. Driscoll, Timothy J. Fahey, Melany C. Fisk, Christine L. Goodale, Mark B. Green, Steven P. Hamburg, Chris E. Johnson, Mryon J. Mitchell, Jennifer L. Morse, Linda H. Pardo, Nicholas L. Rodenhouse

Environmental Science and Management Faculty Publications and Presentations

Evaluations of the local effects of global change are often confounded by the interactions of natural and anthropogenic factors that overshadow the effects of climate changes on ecosystems. Long-term watershed and natural elevation gradient studies at the Hubbard Brook Experimental Forest and in the surrounding region show surprising results demonstrating the effects of climate change on hydrologic variables (e.g., evapotranspiration, streamflow, soil moisture); the importance of changes in phenology on water, carbon, and nitrogen fluxes during critical seasonal transition periods; winter climate change effects on plant and animal community composition and ecosystem services; and the effects of anthropogenic disturbances and …

Mortality Assessment Of Redwood And Mixed Conifer Forest Types In Santa Cruz County Following Wildfire, Steve R. Auten

Master's Theses

On August 12, 2009, the Lockheed Fire ignited the west slope of the Santa Cruz Mountains burning approximately 7,819 acres. Foresters and other land managers were left with challenging decisions on how to evaluate tree mortality. Big Creek Lumber Company, California Polytechnic State University, San Luis Obispo (Cal Poly)’s Swanton Pacific Ranch (SPR), and other resource professionals familiar with this region teamed up to develop a method for evaluating damage and thereby mortality for redwood, California nutmeg, live oak, tanoak, California bay, Pacific madrone, big leaf maple, Douglas-fir, Monterey pine, and knobcone pine. Quantitative damage criteria were used to design …