Forest Sciences Commons^™

Predicting Post-Fire Change In West Virginia, Usa From Remotely-Sensed Data, Michael Strager P. Strager, Melissa Thomas-Van Gundy, Aaron E. Maxwell

Journal of Geospatial Applications in Natural Resources

Prescribed burning is used in West Virginia, USA to return the important disturbance process of fire to oak and oak-pine forests. Species composition and structure are often the main goals for re-establishing fire with less emphasis on fuel reduction or reducing catastrophic wildfire. In planning prescribed fires land managers could benefit from the ability to predict mortality to overstory trees. In this study, wildfires and prescribed fires in West Virginia were examined to determine if specific landscape and terrain characteristics were associated with patches of high/moderate post-fire change. Using the ensemble machine learning approach of Random Forest, we determined that …

Table Of Contents

Professional Agricultural Workers Journal

No abstract provided.

Comparison Of Four Harvesting Systems In A Loblolly Pine Plantation, John Klepac, Dana Mitchell

Professional Agricultural Workers Journal

Abstract

Felling and skidding operations were monitored while clearcut harvesting a 12-acre area of a 14-year old loblolly pine (Pinus taeda) plantation. The study area contained 465 trees per acre for trees 2.0 inches Diameter at Breast Height (DBH) and larger with a Quadratic Mean Diameter (QMD) of 7.26 inches. Two feller-bunchers (tracked and rubber-tired) and two skidders (conventional and large capacity) were paired to create four different harvesting systems which were randomly assigned to 3-acre units for evaluation of production rates and costs. Each system was balanced to determine the number of machines needed to minimize the …

Section Abstracts: Agriculture, Forestry And Aquaculture

Virginia Journal of Science

Abstracts of the Agriculture, Forestry and Aquaculture Section for the 94th Annual Virginia Academy of Science Meeting, May 18-20, 2016, at University of Mary Washington, Fredericksburg, VA.

The Real Footprint Of Electric Vehicles, And What That Could Mean For Our Future, Krista Brown

Journal of Environmental and Resource Economics at Colby

This paper looks at the impact of electric vehicles on CO2 emissions specifically based on the type of electricity used in each New England state analyzed. The research looks at the question of whether or not emissions will in fact be lowered as electric cars start to take the majority of vehicles used instead of the conventional cars that take up a much larger percent of the motor vehicles used today. Taking into account the use of electricity and how many sources of electricity also release a substantial amount of emissions, we see how valid the public opinion of electric …

The Effect Of The Deer Population On The Number Of Car Accidents, Timothy J. Hallock Jr

Journal of Environmental and Resource Economics at Colby

This paper examines the relationship between the deer population and the number of car accidents in New York State from 2002-2012. Data collected includes information on the amount of deer hunted, the number of car accidents, and the number of hunting permits issued. This paper also involves a county level analysis within New York State of 56 counties from 2007 - 2012. An important part of analysis of this paper is the examination of the Buck population vs. the Doe population on the number of car accidents. This is an important study because of its possible policy implications regarding the …

Socioeconomic Attributes’ Relationship To Green Commercial Office Buildings, Tianyang Zhou

Journal of Environmental and Resource Economics at Colby

This paper examines the relationship between the socioeconomic attributes of a state and its green commercial office space adaptation. I hypothesize that a state with high socioeconomic status will have a high green building adoption. Additionally, the high socioeconomic status states may be more likely to invest in green commercial buildings with higher LEED certification levels, and various types of LEED commericial office projects are affected by the socoeconomic attributes differently.

Do Peers Get Punished: Stock Market Effect Of Bp Oil Spill On Peers, Yuga Koda

Journal of Environmental and Resource Economics at Colby

This paper examines the stock market reaction to the British Petroleum oil spill on April 20, 2010. This event study looks at different sectors that may be affected by the oil spill. It finds that different industries do not have significant abnormal returns, with two exceptions. First, utilities companies have a very small positive abnormal return for a short period of time after the incident. Second, when only looking at BP's direct competitors, there is a statistically significant negative abnormal return, implying that BP's competitors are punished for BP's mishap.

Media Effects On Solar Panel Installations Across 20 States, Casey Romeo

Journal of Environmental and Resource Economics at Colby

This paper looks at the relationship between media coverage of solar power and the solar panel installation at a state level. Specifically, it aims to find if more newspaper articles cause more households to adopt solar energy. Use data from 20 states from 2009 to 2014. I find that there is a modest, yet positive and statistically significant relationship between newspaper articles and installations, which suggests that the media does influence the decision to install solar panels. There is possible endogeneity between these two variables. Disentangling this endogeneity is beyond the scope of this research and would be a topic …

Invited Introduction To Jerec, Matthew Kotchen

Journal of Environmental and Resource Economics at Colby

No abstract provided.

Welcome By The Editor, Nathan W. Chan

Journal of Environmental and Resource Economics at Colby

No abstract provided.

Spatial Analysis Of Forest Crimes In Mark Twain National Forest, Missouri, Karun Pandit, Eddie Bevilacqua, Giorgos Mountrakis, Robert W. Malmsheimer

Journal of Geospatial Applications in Natural Resources

Forest crime mitigation has been identified as a challenging issue in forest management in the United States. Knowledge of the spatial pattern of forest crimes would help in wisely allocating limited enforcement resources to curb forest crimes. This study explores the spatial pattern of three different types of forest crimes: fire crime, illegal timber logging crime, and occupancy use crime in the Salem-Patosi Ranger District of Mark Twain National Forest. Univariate and bivariate Ripley’s K-functions were applied to explore the spatial patterns in crime events, like clustering and attraction among forest crime types. Results reveal significant clustering for each forest …

Comparison Of Terrain Indices And Landform Classification Procedures In Low-Relief Agricultural Fields, Derek A. Evans, Karl W. J. Williard, Jon E. Schoonover

Journal of Geospatial Applications in Natural Resources

Landforms control the spatial distribution of numerous factors associated with agronomy and water quality. Although curvature and slope are the fundamental surface derivatives used in landform classification procedures, methodologies for landform classifications have been performed with other terrain indices including the topographic position index (TPI) and the convergence index (CI). The objectives of this study are to compare plan curvature, the convergence index, profile curvature, and the topographic position index at various scales to determine which better identifies the spatial variability of soil phosphorus (P) within three low relief agricultural fields in central Illinois and to compare how two methods …

Discordant Data And Interpretation Of Results From Wildlife Habitat Models, Anita T. Morzillo, Michael G. Wing, Justin Long

Journal of Geospatial Applications in Natural Resources

Wildlife habitat management is an important part of natural resource management. As a result, there are a large number of models and tools for wildlife habitat assessment. A consequence of the many assessment tools is inconsistency when comparing results between tools, which may lead to potential confusion management decisions. Our objective was to compare results from two wildlife habitat models – one being relatively coarse (HUC5) scale and not spatially dynamic and the other being finer scale spatial data based on a 30 m spatial resolution –for habitat assessment of three species across the West Cascades of Oregon: Northern spotted …

Fatty Acid Composition, Oxidative Stability, And Antioxidant Properties Of Some Hungarian And Other Persian Walnut Cultivars, Geza Bujdoso, Éva Kónya, Mária Berki, Magdolna Nagy-Gasztonyi, Krisztina Bartha-Szügyi, Balázs Marton, Ferenc Izsépi, Nóra Adányi

Turkish Journal of Agriculture and Forestry

Ten different Persian walnut cultivars were examined for their compositional data, including eight Hungarian and two introduced varieties. Oil content and fatty acid composition were determined, as well as oxidative stability (indicated by induction time). Antioxidative capacity, total polyphenol measurements, and individual phenolic compounds were also determined. Not only dry samples but fresh and stored samples were included in this study. Large differences were found among the varieties within these parameters, for example in oxidative stability, which contributes to antioxidative capacity. In conclusion, the nutritional value of Hungarian walnut cultivars was the same or even higher than those of foreign …

Variation In Needle And Cone Characteristics And Seed Germination Ability Of Abies Bornmuelleriana And Abies Equi-Trojani Populations From Turkey, Yusuf Kurt, John Frampton, Fikret Isik, Chal Landgren, Gary Chastagner

Turkish Journal of Agriculture and Forestry

Turkish fir (Abies bornmuelleriana Mattf.) and Trojan fir (Abies equi-trojani (Aschers. Et Sint. Ex Boiss) Mattf.) are economically and ecologically important endemic species to Turkey. These species are also becoming increasingly popular in Europe and North America due to their suitable characteristics for use as Christmas trees coupled with their pest resistance. Provenance features, as well as needle and cone characteristics and seed germination ability, of three Turkish fir and two Trojan fir populations were studied. Provenance features (vigor score, crown score, and color) and mother tree characteristics (height class, diameter at breast height, and height) were very similar between …

Moisture Content Effect On Sound Wave Velocity And Acoustic Tomograms In Agarwood Trees (Aquilaria Malaccensis Lamk.), Lina Karlinasari, Nadya Putri, Maman Turjaman, Imam Wahyudi, Dodi Nandika

Turkish Journal of Agriculture and Forestry

Gaharu or agarwood or oudh is a fragrant and highly valuable nontimber forest product obtained from several species of trees that produce it in response to wounding or fungal attack. The aims of the study were to evaluate the sound wave velocity change from green to dry conditions in agarwood and tomographic images associated with changes in the moisture content. A total of 10 trees were selected for this study; five trees were artificially inoculated and the other five were left untreated. After in situ measurement of standing trees stem using nondestructive testing (PiCUS sonic tomography), air-dried disk samples from …

Possible Chemical Mechanism And Determination Of Inhibitory Effects Of 1-Mcp On Superficial Scald Of The Granny Smith Apple Variety, Nesli̇han Eki̇nci̇, Murat Şeker, Fatma Aydin, Mehmet Ali̇ Gündoğdu

Turkish Journal of Agriculture and Forestry

The effects of postharvest 1-methylcyclopropene (1-MCP) treatments on α-farnesene content, incidence of scald, and ethylene content of the Granny Smith apple were evaluated in this study. Harvested apples were treated with 1-MCP at concentrations of 312.5, 625, and 1250 ppb. The 625 and 1250 ppb doses were found to be the most effective in terms of quality protection during storage. For untreated fruits, symptoms of scald development appeared after 8 weeks in cold storage, whereas 1-MCP doses of 625 and 1250 ppb were effective in decreasing superficial scald in fruit after 24 weeks of cold storage. 1-MCP can inhibit oxidation …

Physicochemical, Functional, And Sensory Properties Of Yogurts Containing Persimmon, Seher Arslan, Selma Bayrakci

Turkish Journal of Agriculture and Forestry

This study investigated the effects of various concentrations (10% and 12%, w/w) of persimmon marmalade and puree used in yogurt production. The antioxidant capacity, composition, and physicochemical and sensory properties of yogurts were established during the storage period. The titratable acidity contents and pH values of the samples changed slowly throughout the storage period. Yogurts made from persimmon marmalade had higher a and b values than did other yogurts. Yogurt containing 12% persimmon marmalade received the highest sensory analysis values. The dry matter contents of the samples fluctuated between 16.67% and 21.54% throughout the storage period. The highest viscosity and …

Diversity Analysis Of Genetic, Agronomic, And Quality Characteristics Of Bread Wheat (Triticum Aestivum L.) Cultivars Grown In Turkey, Mustafa Erayman, Emre İlhan, Abdi̇l Hakan Eren, Hüseyi̇n Güngör, Batuhan Akgöl

Turkish Journal of Agriculture and Forestry

Turkey is an important bread wheat producer. The objective of this study was to dissect the diversity of genetic, agronomic, and quality characteristics of bread wheat cultivars grown on 25% of the total wheat area in Turkey. A total of 24 wheat cultivars and 5 wild progenitors of wheat were examined using 24 simple sequence repeat (SSR) primers with a known physical locus on the A, B, and D genomes of hexaploid wheat. A total of 72 bands produced 939 alleles on the wheat cultivars and wild progenitors. Markers were efficient in discriminating the species and the highest genetic diversity …

Characterization Of Some Bioactive Compounds And Physicochemical Propertiesof Grape Varieties Grown In Turkey: Thermal Degradation Kinetics Of Anthocyanin, Sali̇h Karasu, Mehmet Başlar, Safa Karaman, Mahmut Kiliçli, Ahmet Abdullah Us, Hasan Yaman, Osman Sağdiç

Turkish Journal of Agriculture and Forestry

In the present study, five different grapes varieties grown in Turkey were comprehensively characterized in terms of physicochemical properties, total bioactive content, antiradical activity, and volatile sugar compounds. Thermal degradation kinetics of anthocyanin in the selected grape varieties were also analyzed. All the bioactive compounds and antiradical activity varied depending on variety and grape part (skin, pulp, or seed). Higher amounts of total phenolics, total flavonoids, anthocyanin, and antiradical capacity were obtained from seeds. Fifty-nine volatile compounds were observed in the grape varieties. Terpenoid compounds were determined to be the predominant aroma compounds, of which limonene and citral had the …

Impact Of Long Term Soil Management Practices On The Fertility Andweed Flora Of An Almond Orchard, Giovanna Cucci, Giovanni Lacolla, Carmine Crecchio, Silvia Pascazio, Donato De Giorgio

Turkish Journal of Agriculture and Forestry

Soil management techniques can definitely influence soil quality, and particularly soil organic matter content, biological complexity, structure, and water holding capacity. Tillage may also have a negative effect by increasing erosion and organic matter oxidation processes, which have unavoidable repercussions on fertility. The objective of the current research was to test the effects of five different management techniques applied for 35 years on a rain-fed almond grove (Prunus amygdalus Batsch) in a hot-dry environment on some physicochemical, hydrological, and biological parameters. The following soil management techniques were compared: no-till (NT), with weed control by preemergence herbicides; NT, with chemical weed …

Analysis Of Growth, Oil Yield, And Carvacrol In Thymbra Spicata L.After Slow-Growth Conservation, Reham Tahtamouni, Rida Shibli, Ayed Al-Abdallat, Tamara Al-Qudah

Turkish Journal of Agriculture and Forestry

Growth, oil yield, and carvacrol content in Thymbra spicata L. Var. Spicata microshoots were analyzed after 12 weeks of storage in MS media supplemented with elevated levels (0.0, 0.1, 0.2, 0.3, and 0.4 M) of three osmotic agents (sucrose, sorbitol, and mannitol) or ABA (0.0, 3.8, 7.6, and 11.4 μM). The obtained results revealed that using 0.2 M sucrose in the storage media yielded the best results in terms of growth reduction during conservation as well as maintenance of microshoot recovery at full capacity (100%) after conservation. Meanwhile, 0.1 M sorbitol or mannitol in addition to 3.8 μM ABA were …

Yield And Fruit Quality Of Sweet Pepper Depending On Foliar Application Of Calcium, Halina Buczkowska, Zenia Michalojc, Renata Nurzynska-Wierdak

Turkish Journal of Agriculture and Forestry

The proper feeding of field plants is one of the most significant factors with an impact on their growth and development. Calcium is one of the basic nutrients of plants, crucial in many cell processes. Calcium in a plant is reutilized very poorly, and hence symptoms of deficiency of this component are observed on the youngest leaves, apexes of stems and roots, and, most importantly, on the fruits. The aim of this study was to evaluate the effects of foliar Ca feeding on the yield of sweet pepper 'Caryca F1' and on selected elements of its fruit quality in field …

Diversity Analysis Of Green Gram (Vigna Radiata (L.) Wilczek)Through Morphological And Molecular Markers, Gunjeet Kaur, Arunabh Joshi, Devendra Jain, Ravish Choudhary, Divya Vyas

Turkish Journal of Agriculture and Forestry

Twenty-three genotypes of green gram (Vigna radiata (L.) Wilczek) were collected to determine the extent of genetic diversity through morphological characters as well as random amplified polymorphic DNA (RAPD), inter-simple sequence repeat (ISSR), and simple sequence repeat (SSR) fingerprinting results. Analysis of variance revealed significant mean square values that indicated a substantial degree of genetic variability among the genotypes. Significant genetic variance was observed for days to 50% maturity, days to maturity, plant height (cm), number of branches/plant, number of pods/plant, pod length (cm), 1000-seed weight (g), seed yield/plant (g), biological yield (g), and harvest index (%) during cultivation in …

First Report Of ?Candidatus Phytoplasma Solani? On A Newhost Marigold (Tagetes Erecta L.), Şevket Alp, Mustafa Usta, Hi̇kmet Murat Si̇pahi̇oğlu, Abdullah Güller

Turkish Journal of Agriculture and Forestry

Marigold (Tagetes erecta L.) plants, also called Mexican or Aztec marigold, with symptoms of shoot proliferation, dwarfing, and reddening were observed in ornamental gardens of Van Province (Turkey). Five plants, two of them showing reddening and three symptomless plants, were sampled at the end of September 2014. Genomic DNA isolated from symptomatic and nonsymptomatic plant leaves was used to amplify 16S rDNA fragments by nested polymerase chain reaction (PCR). Of the 5 marigold samples tested by PCR, only the two showing reddening symptoms yielded the expected 1.2-kb DNA fragments. Amplified PCR fragments were cloned into a plasmid vector and transformed …

Band-Application Of Phosphorus With Farm Manure Improves Phosphorus Use Efficiency, Productivity, And Net Returns Of Wheat On Sandy Clay Loam Soil, Abdur Rehim, Mubshar Hussain, Sajjad Hussain, Sibgha Noreen, Hülya Doğan, Muhammad Zia-Ul-Haq, Shakeel Ahmad

Turkish Journal of Agriculture and Forestry

Phosphorus use efficiency (PUE) is very low in alkaline calcareous soils; however, it can be improved by using suitable application methods along with farm manure (FM). The present field study was conducted to optimize phosphorus (P) levels and application methods in order to maximize wheat yield, PUE, and net returns on calcareous soils with and without FM application. Five P soil solution levels, i.e. 0.00, 0.05, 0.10, 0.20, and 0.30 mg P L-1, were maintained according to the Freundlich model through the application of 0, 36, 61, 104, and 142 kg P2O5 ha-1, respectively. The calculated P (0, 36, 61, …

Use Of Black Locust/Poplar Wood As Filler In Thermoplastic Composites, Seyyed Khalil Hosseinihashemi, Sina Karimi, Ahmad Jahan Latibari, Abbas Tamjidi, Nadi̇r Ayrilmiş

Turkish Journal of Agriculture and Forestry

Wood plastic composites (WPCs) were produced from different mixtures (up to 45% by weight) of poplar (Populus alba L.) and pruning branches of black locust (Robinia pseudoacacia) wood flours, polypropylene (53 wt.%), and maleic anhydride-grafted polypropylene (2 wt.%). Weight loss, flexural strength (MOR), flexural modulus (MOE), notched impact strength (IS), water absorption (WA), and thickness swelling (TS) of WPCs after 24 h of immersion in distilled water were determined before and after incubation with white-rot fungus (Trametes versicolor) for 7 weeks. The MOR and MOE increased with an increase in poplar wood in the WPC. The notched IS decreased with …

The Effects Of Phosphorus Addition On Phytoavailability Of Zinc By Diffusive Gradientsin Thin Films (Dgt), Osman Sönmez, Gary Pierzynski, Cengi̇z Kaya, Sali̇h Aydemi̇r

Turkish Journal of Agriculture and Forestry

Diffusive gradients in thin films (DGT) have been used for the assessment of Zn phytoavailability. Phosphorus is of particular interest in soils having Zn toxicity because of the Zn-P interaction. A greenhouse study was carried out to assess the influence of different P rates on the Zn phytoavailability to sorghum-Sudan grass (Sorghum vulgare var. Sudanese) in soil systems by DGT. Soil was amended with ZnSO4 at 0, 150, 300, 600, and 1200 mg Zn kg-1 in order to create various levels of Zn phytoavailability. Phosphorus was applied to soil at 0, 100, and 200 mg P kg-1 as KH2PO4. Plant …

Effect Of Altitude And Aspect On Various Wood Properties Oforiental Beech (Fagus Orientalis Lipsky) Wood, Eli̇f Topaloğlu, Nurgül Ay, Lokman Altun, Bedri̇ Serdar

Turkish Journal of Agriculture and Forestry

In this study it was proposed to investigate the effect of altitude and aspect on anatomical properties, wood density, and mechanical properties of Oriental beech (Fagus orientalis Lipsky) growing in Sinop, Turkey. Five altitude steps (0-200, 200-400, 400-600, 600-800, and 800-1000 m) and two aspect groups (north and south) were created in the research area. A total of 20 trees were cut from each altitude step and the north and south aspects. To determine the anatomical properties of wood, permanent slides were prepared and Schultze's method was used for measurement of fibers. Wood density and mechanical properties were examined according …