The Effect Of Soil Regimes And Topography On Tree Community Composition In The Gordon Natural Area,
2010
West Chester University of Pennsylvania
The Effect Of Soil Regimes And Topography On Tree Community Composition In The Gordon Natural Area, Calen Daugherty, William Hochella, Kyle Houser, Sarah Johnson, Carolyn Keene
Gordon Natural Area Soils Studies Documents
No abstract provided.
Parametric Modeling Of Root Length Density And Root Water Uptake In Unsaturated Soil,
2010
TÜBİTAK
Parametric Modeling Of Root Length Density And Root Water Uptake In Unsaturated Soil, Sina Besharat, Amir Hossein Nazemi, Ali Ashraf Sadraddini
Turkish Journal of Agriculture and Forestry
The problem of water movement through the root zone has attracted increasing interest during the last few decades. In this research, the spatial and temporal pattern of root water uptake in wetted soil was studied in the root zone of a 6-year-old apple tree. An important part of the root water uptake model is root length density, which was measured by sampling soil cores in one quarter of the root zone. The exponential model better described the observed apple root distribution. The measured data were compared against the outputs of the root density distribution model. A normalized root length density …
The Influence Of Environmental Settings On The Distribution Of Invasive Species,
2010
West Chester University of Pennsylvania
The Influence Of Environmental Settings On The Distribution Of Invasive Species, David Bercaw, Nora Dougherty, William Sees
Deer and Non-native Invasive Plant Impact Study Documents
No abstract provided.
Regeneration Response And Seedling Bank Dynamics On A Dendroctonus Rufipennis-Killed Picea Engelmannii Landscape,
2010
Utah State University
Regeneration Response And Seedling Bank Dynamics On A Dendroctonus Rufipennis-Killed Picea Engelmannii Landscape, R. Justin Derose, James N. Long
Aspen Bibliography
Question: How does regeneration response to a host- specific, high-severity, infrequent Dendroctonus rufipennis outbreak differ from our conceptualization of high-severity, infrequent/low-severity, frequent disturbance regimes in Picea engelmannii - Abies lasiocarpa communities? Location: Southern Utah, USA. Methods: One hundred and seven plots across a high- elevation P. engelmannii forest were sampled to re- construct pre-outbreak overstory and seedling bank densities, and calculate their associated metrics of diversity. Decade of establishment by seedling bank trees indicated ‘‘chronic’’ and ‘‘pulse’’ regenerators. Results: The post-outbreak overstory and seedling bank were dominated by A. lasiocarpa. Although Pinus flexilis, Pinus ponderosa, Picea pungens, and Psuedotsuga menziesii …
Propagating Trembling Aspen From Root Cuttings: Impact Of Storage Length And Phenological Period Of Root Donor Plants,
2010
Utah State University
Propagating Trembling Aspen From Root Cuttings: Impact Of Storage Length And Phenological Period Of Root Donor Plants, Jessica Snedden, Simon M. Landhausser, Victor J. Lieffers, Lee R. Charleson
Aspen Bibliography
Two experiments were conducted to examine the effects of growing conditions, duration of cold storage, and distinct phenological periods of root donor plants on the propagation success of aspen rootlings. Root donor plants were produced either under greenhouse or open grown conditions. Root cuttings were periodically collected from donor plants that had been stored for various lengths of time in cold storage (up to 180 days), or that were stored dormant in cold storage (up to 150 days) and then grown for another full growing season. Longer storage of donor plants produced only slightly smaller rootlings and resulted in slightly …
The Effect Of Field Pea (Pisum Sativum L.) Companion Crop Management On Red Clover (Trifolium Pratense L.) Establishment And Productivity, Branko Cupina, Dorde Krstic, Aleksandar Mikic, Pero Eric, Savo Vuckovic, Borivoj Pejic
Turkish Journal of Agriculture and Forestry
Field pea (Pisum sativum L.) has the potential to be a suitable companion crop for the establishment of red clover (Trifolium pratense L.), as it is fast growing and is harvested early, and thus reduces the duration of competition and allows light to be transmitted through its canopy to an undersown species more so than other companion crops such as small grains. The aim of this study was to determine the suitability of field pea as a companion crop for red clover, and in particular to determine the effect of pea cultivar and plant population density. The field experiment comprised …
Properties Of Particleboard Produced With Liquefaction-Modified Phenol-Formaldehyde Adhesive,
2010
TÜBİTAK
Properties Of Particleboard Produced With Liquefaction-Modified Phenol-Formaldehyde Adhesive, Jung-Uk Lee, Yong-Sung Oh
Turkish Journal of Agriculture and Forestry
Pinus densiflora wood flour was liquefied in the presence of phenol, using sulfuric acid as a catalyst. Liquefaction-modified phenol-formaldehyde (LPF) resins were synthesized as particleboard binder. The physical characteristics of the laboratory-synthesized control PF resin and the LPF resins are described. Laboratory particleboard (PB) was made using Korean hybrid poplar (Populus alba × glandulosa) particles with the control PF resin and LPF resins. The physical strength and dimensional stability of the PBs were tested according to ASTM D 1037-99 and KS F 3104 standard procedures. PB test results show that the physical and mechanical strength properties differed significantly according to …
A New Study On The Bacteria Of Agrotis Segetum Schiff. (Lepidoptera: Noctuidae) And Their Insecticidal Activities,
2010
TÜBİTAK
A New Study On The Bacteria Of Agrotis Segetum Schiff. (Lepidoptera: Noctuidae) And Their Insecticidal Activities, Ali̇ Sevi̇m, Zi̇hni̇ Demi̇rbağ, İsmai̇l Demi̇r
Turkish Journal of Agriculture and Forestry
Agrotis segetum Schiff. (Lepidoptera: Noctuidae) is one of the most serious pests of nearly all vegetables in Turkey. In this study, to find a more effective and safe biological control agent, the bacterial flora of Agrotis segetum were investigated in larvae collected from different populations in the vegetable fields of the Black Sea region of Turkey, and 9 bacterial isolates were cultured from these populations. Seven of these bacteria were determined and characterized at the species level and the rest were characterized at the genus level. Morphological, physiological, and biochemical characteristics of the bacterial isolates were determined by conventional and …
Evaluation Of Late Season Drought Effects On Seed And Oil Yields In Spring Safflower Genotypes,
2010
TÜBİTAK
Evaluation Of Late Season Drought Effects On Seed And Oil Yields In Spring Safflower Genotypes, Bahman Pasban Eslam, Hassan Monirifar, Mastaneh Taher Ghassemi
Turkish Journal of Agriculture and Forestry
Seed and oil yields, their components, and the relationships among yield and related traits were measured in 5 spring safflower (Carthamus tinctorius L.) genotypes, Local Arak, Local Esfahan, Sina, KH_{23-57}, and Goldasht, under nonstressed and water deficit conditions imposed from late flowering (80% flowering) to maturity. The studies were conducted in loam soil at the Research Center for Agriculture and Natural Resources of East Azarbaijan, Iran (46°2'E, 37°58'N) during 3 successive years (2005-2007). According to the significant decrease in the number of seeds per capitulum, 1000-seeds weight, harvest index, and seed and oil yields under water deficit conditions, it seems …
Temperature Dependent Development Of The Egg-Larval Parasitoid Chelonus Oculator On The Factitious Host, Ephestia Cautella,
2010
TÜBİTAK
Temperature Dependent Development Of The Egg-Larval Parasitoid Chelonus Oculator On The Factitious Host, Ephestia Cautella, Hi̇lal Tunca, Cem Özkan, Ahmet Neşet Kilinçer
Turkish Journal of Agriculture and Forestry
Development, fecundity, and longevity of the egg-larval parasitoid Chelonus oculator Panzer (Hymenoptera: Braconidae) were studied on the factitious host, Ephestia cautella (Walker) (Lepidoptera: Pyralidae) at 4 different temperatures (15 °C, 20 °C, 25 °C, and 30 °C). Developmental time from egg to adult was inversely related to temperature. Egg to adult development time ranged from 188 days at 15 °C to 28 days at 30 °C. Complete development required 489 degree-days with a developmental threshold of 12.5 °C. Adult male and female longevity ranged from 43 days at 20 °C to 17 days at 30 °C. Maximum production of offspring …
Family Ties: Mainstream Environmentalists' Understanding Of Radical Environmentalism In America,
2010
Colby College
Family Ties: Mainstream Environmentalists' Understanding Of Radical Environmentalism In America, Zachary W. Ezor
Honors Theses
Environmentalism in the United States manifests itself in numerous ways. While American environmentalists have been grouped into broad camps over the years, observers have struggled to accurately classify the different components of the movement. Lately, environmentalists have been characterized based on their chosen modus operandi. Environmentalists who employ typical interest group tactics of policy advocacy and accept the notion of political compromise can generally be called 'mainstream.' Alternatively, those environmentalists who employ non-conventional strategies like direct action and take a no-compromise stance on environmental issues are typically described as 'radical.' Despite these distinctions, both radical and mainstream environmentalists are parts …
The Determination Of Pneumatic Conveying Characteristics Of Chickpea,
2010
TÜBİTAK
The Determination Of Pneumatic Conveying Characteristics Of Chickpea, Ahmet Kiliçkan, Meti̇n Güner
Turkish Journal of Agriculture and Forestry
The pneumatic conveying characteristics of chickpea (Cicer arietinum L.) of the variety Koçbasi were determined. The length, width, thickness, arithmetic mean diameter, geometric mean diameter, sphericity, volume, 1000 seed mass, bulk density, true density, porosity, projected area, terminal velocity, drag coefficient, pressure drop, power consumption, and seed damage, namely mechanical damage, germination test, and seed vigour index, were investigated experimentally. The positive low pressure system was used for the conveying of chickpeas. The power requirement and pressure drop were boosted with increasing the revolution of the blower and conveying capacity decreased with increasing pipe diameter. The highest pressure drop and …
A Staining Method For Determining Severity Of Tension Wood,
2010
TÜBİTAK
A Staining Method For Determining Severity Of Tension Wood, Ayşe Di̇lek Doğu, Michael Grabner
Turkish Journal of Agriculture and Forestry
Tension wood is considered to be an important defect by the wood processing industries. A considerable amount of research has been done to determine the presence and structure of tension wood; however, there is a need to find a quick, practical, and applicable method to evaluate the severity of tension wood. This study investigated whether zinc-chlorine-iodide (Herzberg reagent) could be applied in determination of tension wood severity. Fagus sylvatica L. (beech wood), Populus alba L. (poplar wood), and Quercus robur L. and Quercus rubra L. (oak wood) species were used in this study. The results were compared with safranin/astra blue …
Global Assessment Of Nitrogen Deposition Effects On Terrestrial Plant Diversity : A Synthesis,
2010
Marshall University
Global Assessment Of Nitrogen Deposition Effects On Terrestrial Plant Diversity : A Synthesis, R. Bobbink, K. Hicks, J. Galloway, T. Spranger, R. Alkemade, M. Ashmore, M. Bustamante, S. Cinderby, E. Davidson, F. Dentener, B. Emmett, J. W. Erisman, M. Fenn, Frank S. Gilliam, A. Nordin, L. Pardo, W. Devries
Biological Sciences Faculty Research
Atmospheric nitrogen (N) deposition is a recognized threat to plant diversity in temperate and northern parts of Europe and North America. This paper assesses evidence from field experiments for N deposition effects and thresholds for terrestrial plant diversity protection across a latitudinal range of main categories of ecosystems, from arctic and boreal systems to tropical forests. Current thinking on the mechanisms of N deposition effects on plant diversity, the global distribution of G200 ecoregions, and current and future (2030) estimates of atmospheric N-deposition rates are then used to identify the risks to plant diversity in all major ecosystem types now …
Guidelines For Aspen Restoration On The National Forests In Utah,
2010
Utah State University
Guidelines For Aspen Restoration On The National Forests In Utah, Mary O'Brien, Paul Rogers, Kevin Mueller, Rob Macwhorter, Allen Rowley, Bill Hopkin, Bill Christensen, Paul Dremann
Aspen Bibliography
These guidelines are a working document and will be tested within the Utah National Forests on dif- ferent aspen types.
Aspen Biology, Community Classification, And Management In The Blue Mountains,
2010
Utah State University
Aspen Biology, Community Classification, And Management In The Blue Mountains, David K. Swanson, Craig L. Schmitt, Diane M. Shirley, Vicky Erickson, Kenneth J. Schuetz, Michael L. Tatum, David C. Powell
Aspen Bibliography
Quaking aspen (Populus tremuloides Michx.) is a valuable species that is declining in the Blue Mountains of northeastern Oregon. This publication is a compilation of over 20 years of aspen management experience by USDA Forest Service workers in the Blue Mountains. It includes a summary of aspen biology and occurrence in the Blue Mountains, and a discussion of aspen conservation and management techniques such as fencing, conifer removal, and artificial propagation. Local data on bird use of aspen stands, insects and diseases in aspen, and genetic studies of aspen are also included. An aspen community classification developed from over …
Relationship Of Climate And Growth Of Quaking Aspen (Populus Tremuloides) In Yellowstone National Park,
2010
Utah State University
Relationship Of Climate And Growth Of Quaking Aspen (Populus Tremuloides) In Yellowstone National Park, Erik S. Jules, Allyson L. Carroll, Matthew J. Kauffman
Aspen Bibliography
Quaking aspen is a widespread tree that is in decline across wide areas of western North America, and is predicted to experience a large range shift if future climate predictions are realized. The purpose of our study was to determine what climate factors have influenced aspen growth in Yellowstone National Park, USA, and to determine whether these climatic influences vary across a heterogeneous landscape. We extracted increment cores from 10-12 aspen in each of 16 stands spread across a 1,526 km2 area. Using ring widths, we created a182-year standardized chronology from 1821 to 2003 A.D. composed of 151 series. We …
Aspen Mortality Summit, December 18 And 19, 2006, Salt Lake City, Utah,
2010
Utah State University
Aspen Mortality Summit, December 18 And 19, 2006, Salt Lake City, Utah, Dale L. Bartos, Wayne D. Shepperd
Aspen Bibliography
The USDA Forest Service Rocky Mountain Research Station sponsored an aspen sum- mit meeting in Salt Lake City, Utah, on December 18 and19, 2006, to discuss the rapidly increasing mortality of aspen (Populus tremuloides) throughout the western United States. Selected scientists, university faculty, and managers from Federal, State, and non-profit agencies with experience working with aspen were invited. Participants were first asked to share information on recent aspen mortality. Subject matter working groups were then asked to determine factors associated with recent aspen mortality, recommend research needs, and organize those needs into testable questions and hypotheses. This report documents their …
Basal Area Growth For Aspen Suckers Under Simulated Browsing On Cedar Mountain, Southern Utah, Western United States Of America,
2010
Utah State University
Basal Area Growth For Aspen Suckers Under Simulated Browsing On Cedar Mountain, Southern Utah, Western United States Of America, K Tshireletso, J C. Malechek, D L. Bartos
Aspen Bibliography
The objective of the study was to determine the effects of season and intensity of clipping using simulated browsing on suckers' (Populus tremulaides Michx.) basal area growth on Cedar Mountain, Southern Utah, Western United States of America. Three randomly selected stands measuring 70 m x 70 m were clear-felled in mid-July, 2005, and fenced. Simulated browsing treatments of 0%, 20%, 40%, and 60% removal of current year's growth on aspen suckers were randomly applied in early, mid-, and late summers of2006 and 2007 on permanently demarcated quadrats. Sucker basal area was monitored by measuring basal diameter of individual suckers. These …
Assaying Of Diversity Among Soybean (Glycin Max (L.) Merr.) And Peanut (Arachis Hypogaea L.) Genotypes At Dna Level,
2010
TÜBİTAK
Assaying Of Diversity Among Soybean (Glycin Max (L.) Merr.) And Peanut (Arachis Hypogaea L.) Genotypes At Dna Level, Faheem Shehzad Baloch, Cemal Kurt, Hali̇l Hali̇s Arioğlu, Hakan Özkan
Turkish Journal of Agriculture and Forestry
Developing successful strategies to ensure future increase in yield of soybean and peanut crops hinges in part, on improving the genetic basis of the cultivars. Knowledge of genetic relationships in crop breeding programs provides valuable information that can be used by plant breeders as a parental line selection tool. So far, a thorough analysis of genetic diversity among the soybean and peanut genotypes grown in Turkey had not been attempted at DNA level. In this study, inter-simple sequence repeats (ISSR) and sequence-related amplified polymorphism (SRAP) markers were used to evaluate the genetic diversity between 21 soybean and 32 peanut cultivars …
