Effect Of Strainer Type, Spray Pressure, And Orifice Size On The Discharge Coefficient Of Standard Flat-Fan Nozzles,
2015
TÜBİTAK
Effect Of Strainer Type, Spray Pressure, And Orifice Size On The Discharge Coefficient Of Standard Flat-Fan Nozzles, Bahadir Sayinci
Turkish Journal of Agriculture and Forestry
The aim of this study was to determine the effect of nozzle strainer type (cylindrical, ball check, slotted, and cup screen type), spray pressure, and nozzle orifice size on the discharge coefficient (Cd) of standard flat-fan nozzles of different nominal sizes (from 02 to 06) and 110° spray angle. The flow rates measured for each nozzle orifice size and strainer type combinations were determined at five different spray pressures (2.0, 3.5, 5.0, 6.5, and 8.0 bars). In the study, size, shape, and area measurements concerned with nozzle geometry were performed and the differences between nozzles of different nominal sizes were …
Transcriptome Analysis Of Banana (Musa Balbisiana) Basedon Next-Generation Sequencing Technology,
2015
TÜBİTAK
Transcriptome Analysis Of Banana (Musa Balbisiana) Basedon Next-Generation Sequencing Technology, Suthanthiram Backiyarani, Subbaraya Uma, Marimuthu Somasundram Saraswathi, Asoor Santhanam Saravanakumar, Arumugam Chandrasekar
Turkish Journal of Agriculture and Forestry
Banana (Musa spp.) is an important tropical fruit with high commercial potential. Musa balbisiana (B genome) is a progenitor of one of the most cultivated banana species and exhibits unique traits, including resistance or tolerance to many biotic and abiotic stresses. RNA sequencing of the Musa B genome would provide a vast array of transcriptomic information that could lead to the development of trait-specific markers and the discovery of new genes and regulatory sequences involved in resistance mechanisms. Thus, transcriptome sequencing was performed in Musa B genome accession Attikol using the Ion Torrent platform. This led to the generation of …
Incidence Of Microbial Infections Revealed By Assessing Nodulation Infield-Collected Insects From Adana Province,
2015
TÜBİTAK
Incidence Of Microbial Infections Revealed By Assessing Nodulation Infield-Collected Insects From Adana Province, Hasan Tunaz, Mehmet Kubi̇lay Er, Ali̇ Arda Işikber
Turkish Journal of Agriculture and Forestry
Results of a field study designed to assess the extent of natural microbial infections in insects collected from agrarian fields surrounding Adana, Turkey, are reported. We identified and dissected specimens to assess the numbers of nodules. Formation of darkened melanotic nodules is the predominant cellular immune reaction to microbial and parasitic infection, and once formed, the nodules are permanently attached to internal surfaces. At least some nodules were found in 99% of 1200 examined specimens that were healthy in appearance. The number of nodules ranged approximately from 1 nodule/individual to >120 nodules/individual. We inferred that insects are regularly challenged by …
Short-Term Hydrological Responses To Silvicultural Treatments Withina Stream Buffer Zone: A Case Study,
2015
TÜBİTAK
Short-Term Hydrological Responses To Silvicultural Treatments Withina Stream Buffer Zone: A Case Study, Ferhat Kara, Latif Kalin, Edward Francis Loewenstein
Turkish Journal of Agriculture and Forestry
The thinning of stream buffer zones (SBZs) is gaining popularity as a silvicultural management practice in order to reduce the risk of wildfire and insect hazard, provide economic return, and improve the effectiveness of SBZs. In this study, streamflow over a 1-year period was monitored at 2 small paired watersheds (treated vs. reference). The short-term impacts of a partial cutting within a SBZ as well as the relative effects of pastoral, forested, and clearcut areas on changes in downstream hydrology were examined. Upstream pastoral areas had a higher water yield than downstream forested sections during the no-harvest (calibration) period of …
Barley Molybdenum Cofactor Sulfurase (Mcsu): Sequencing, Modeling, And Its Comparison To Other Higher Plants,
2015
TÜBİTAK
Barley Molybdenum Cofactor Sulfurase (Mcsu): Sequencing, Modeling, And Its Comparison To Other Higher Plants, Ertuğrul Fi̇li̇z, Assaf Distelfeld, Tzion Fahima, Özge Karakaş Meti̇n, Eviatar Nevo, Song Weining, Ahu Altinkut Uncuoğlu
Turkish Journal of Agriculture and Forestry
Molybdenum cofactor sulfurases (MCSUs) are important enzymes for plant development and response to environmental queues, including processes such as nitrogen metabolism and regulation of the abscisic acid levels in plant tissues. We cloned and sequenced MCSU gene from barley and performed in silico comparison with rice, tomato, and Arabidopsis. Physico-chemical properties and subcellular predictions were found to be similar in different plant species. All MCSUs had three critical domains: aminotransferase class-V (Pfam: PF00266), MOSC N-terminal beta barrel (Pfam: PF03476), and MOSC (Pfam: PF03473). Secondary structure analysis revealed that random coils were the most abundant, followed by α-helices and extended strands. …
Response Of Bread-Wheat Seedlings To Waterlogging Stress,
2015
TÜBİTAK
Response Of Bread-Wheat Seedlings To Waterlogging Stress, Murat Ti̇ryaki̇oğlu, Sema Karanlik, Mehmet Arslan
Turkish Journal of Agriculture and Forestry
Waterlogging is a widespread problem and one of the major yield-limiting factors of wheat in some parts of the coastal plains of Turkey. The object of this study was to identify waterlogging-tolerant cultivars in bread wheat. Twenty-four bread-wheat genotypes were tested under aerobic and anaerobic conditions to determine shoot dry weight gain, root dry weight gain, total dry weight gain, dry leaf weight, specific dry leaf weight, chlorophyll content, carotenoid content, transpiration and photosynthesis rates, and their tolerance indices. A complete randomized block design with three replications was conducted for both aerobic and anaerobic conditions. The current study clearly demonstrated …
Radiation, Water, And Nitrogen Use Efficiencies Of Gossypium Hirsutum L.,
2015
TÜBİTAK
Radiation, Water, And Nitrogen Use Efficiencies Of Gossypium Hirsutum L., Shakeel Ahmad, Ilyas Raza, Di̇lbaugh Muhammad, Hakoomat Ali, Sajjad Hussain, Hülya Doğan, Muhammad Ziaulhaq
Turkish Journal of Agriculture and Forestry
Resource use efficiency is a baseline for productive agriculture and proper management of different resources (water, nitrogen, light, and land), and it plays a pivotal role in the accomplishment of this goal. Three field experiments were carried out at the experimental farm area of the Central Cotton Research Institute, Multan, Pakistan, in 2009 and 2010 to investigate the effects of different resources on cotton crops. Treatments for the first experiment included 4 cultivars and 6 nitrogen levels. The second experiment comprised 3 variables, irrigation methods, cultivars, and plant spacing, whereas 2 variables, including different irrigation regimes and glycinebetaine application, were …
Clonal Propagation And Synthetic Seed Production From Nodal Segments Ofcape Gooseberry (Physalis Peruviana L.), A Tropical Fruit Plant, Bahti̇yar Buhara Yücesan, Ali̇yu Mohammed, Merve Arslan, Ekrem Gürel
Turkish Journal of Agriculture and Forestry
Physalis peruviana L. contains polyphenols and carotenoids with antiinflammatory and antioxidant activities used against diabetes. To establish an efficient regeneration system using nodal segments excised from 4-week-old germinated seedlings, direct plant regeneration, without additional rooting stage, was achieved on LS medium containing 0.5 mg/L 6-benzylaminopurine (BAP), kinetin (KIN), thidiazuron (TDZ), or gibberellic acid (GA3), alone or in combination with 0.25 mg/L indole-3-acetic acid (IAA) or indole-3-butyric acid (IBA), after 2 weeks of incubation. The highest mean numbers of shoots and well-developed roots were obtained on LS medium containing solely 0.5 mg/L TDZ, producing 5.3 shoots and 3.3 roots per explant …
Investigating Within-Canopy Variation Of Functional Traits And Cellular Structure Of Sugar Maple (Acer Saccharum) Leaves,
2015
Michigan Technological University
Investigating Within-Canopy Variation Of Functional Traits And Cellular Structure Of Sugar Maple (Acer Saccharum) Leaves, Adam P. Coble
Dissertations, Master's Theses and Master's Reports - Open
Patterns of increasing leaf mass per area (LMA), area-based leaf nitrogen (Narea), and carbon isotope composition (δ13C) with increasing height in the canopy have been attributed to light gradients or hydraulic limitation in tall trees. Theoretical optimal distributions of LMA and Narea that scale with light maximize canopy photosynthesis; however, sub-optimal distributions are often observed due to hydraulic constraints on leaf development. Using observational, experimental, and modeling approaches, we investigated the response of leaf functional traits (LMA, density, thickness, and leaf nitrogen), leaf carbon isotope composition (δ13C), and cellular structure to light availability, height, and leaf water …
Assessing The Permeability Of Landscape Features To Animal Movement: Using Genetic Structure To Infer Functional Connectivity,
2015
Minnesota State University Moorhead
Assessing The Permeability Of Landscape Features To Animal Movement: Using Genetic Structure To Infer Functional Connectivity, Sarah J. Anderson, Elizabeth M. Kierepka, Robert K. Swihart, Emily K. Latch
Department of Forestry & Natural Resources Faculty Publications
Human-altered environments often challenge native species with a complex spatial distribution of resources. Hostile landscape features can inhibit animal movement (i.e., genetic exchange), while other landscape attributes facilitate gene flow. The genetic attributes of organisms inhabiting such complex environments can reveal the legacy of their movements through the landscape. Thus, by evaluating landscape attributes within the context of genetic connectivity of organisms within the landscape, we can elucidate how a species has coped with the enhanced complexity of human altered environments. In this research, we utilized genetic data from eastern chipmunks (Tamias striatus ) in conjunction with spatially explicit habitat …
Ancient Humans Influenced The Current Spatial Genetic Structure Of Common Walnut Populations In Asia,
2015
Consiglio Nazionale delle Ricerche, Institute of Agro-Environmental and Forest Biology, Rome, Italy
Ancient Humans Influenced The Current Spatial Genetic Structure Of Common Walnut Populations In Asia, Paola Pollegioni, Keith E. Woeste, Francesca Chiocchini, Stefano Del Lungo, Irene Olimpieri, Virginia Tortolano, Jo R. Clark, Gabriel E. Hemery, Sergio P. Mapelli, Maria Emilia Malvolti
Department of Forestry & Natural Resources Faculty Publications
Common walnut (Juglans regia L) is an economically important species cultivated worldwide for its wood and nuts. It is generally accepted that J. regia survived and grew spontaneously in almost completely isolated stands in its Asian native range after the Last Glacial Maximum. Despite its natural geographic isolation, J. regia evolved over many centuries under the influence of human management and exploitation. We evaluated the hypothesis that the current distribution of natural genetic resources of common walnut in Asia is, at least in part, the product of ancient anthropogenic dispersal, human cultural interactions, and afforestation. Genetic analysis combined with ethno-linguistic …
Interactions Among Spruce Beetle Disturbance, Climate Change And Forest Dynamics Captured By A Forest Landscape Model,
2015
University of Colorado Boulder
Interactions Among Spruce Beetle Disturbance, Climate Change And Forest Dynamics Captured By A Forest Landscape Model, Christian Temperli, Thomas T. Veblen, Sarah J. Hart, Dominik Kulakowski, Alan J. Tepley
Geography
The risk of bark beetle outbreaks is widely predicted to increase because of a warming climate that accelerates temperature-driven beetle population growth and drought stress that impairs host tree defenses. However, few if any studies have explicitly evaluated climatically enhanced beetle population dynamics in relation to climate-driven changes in forest composition and structure that may alter forest suitability for beetle infestation. We synthesized current understanding of the interactions among climate, spruce beetles (Dendroctonus rufipennis) and forest dynamics to parameterize and further advance the bark beetle module of a dynamic forest landscape model (LandClim) that also integrates fire and wind disturbance …
Evaluation Of A Generalized Basal Area Stand Table Projection Model For Appalachian Hardwoods Growth And Yield Systems,
2015
West Virginia University
Evaluation Of A Generalized Basal Area Stand Table Projection Model For Appalachian Hardwoods Growth And Yield Systems, Aaron M. Holley
Graduate Theses, Dissertations, and Problem Reports (ETD)
A generalized stand table projection algorithm was used to disaggregate species group level data for the Fernow Experimental Forest in the Allegheny Front physiographic region of the Central Appalachian Hardwoods region. The generalized stand table projection method has proved effective in projecting multi and uni-modal distributions in single species stands. Exploration into the potential for use in mixed species Central Appalachian Hardwoods thinned and unthinned stands proved promising. When compared to basal area projections using SILVAH, generalized stand table projection outperformed SILVAH at the plot level. Generalized stand table projection produced smaller errors on non-overlapping growth projections for both thinned …
Nonstructural Carbohydrate Concentrations Of Pine Trees As A Function Of Evolutionary History,
2015
Georgia Southern University
Nonstructural Carbohydrate Concentrations Of Pine Trees As A Function Of Evolutionary History, Joshua T. Mims
College of Graduate Studies: Theses & Dissertations
Nonstructural carbohydrates (NSC) can supply substrate during periods when current photosynthate is unavailable or inadequate to meet metabolic demands. I hypothesized that natural selection has favored higher nonstructural carbohydrate concentrations ([NSC]) in species that have an evolutionary history of frequent disturbance and tested this using three southern pine species that have evolved under a continuum of disturbance frequencies (evolutionary history of fire ~ longleaf > slash > loblolly). Stem and root samples were collected from 12 similar-sized individual trees of each species during time periods that reflect the annual minimum and maximum [NSC]. A modified colorimetric method was performed on the samples …
The Impact Of Forest Successional Status On Community Structure Of Neotropical Cerambycid Beetles,
2015
CUNY City College
The Impact Of Forest Successional Status On Community Structure Of Neotropical Cerambycid Beetles, Lin Li
Dissertations and Theses
Due to anthropogenic activities, tropical rain forests face many challenges in sustaining biodiversity and maintaining global climates. This project examines how forest successional status affects community composition of saproxylic cerambycids, which, as early colonists of moribund trees, have an important role in nutrient cycling. In the lowland rain forest of Costa Rica, thirty-nine trees in five plant families (Fabaceae, Lecythidaceae, Malvaceae, Moraceae, and Sapotaceae) were sampled in a mosaic of old growth and secondary forest. They yielded 3545 cerambycid individuals in 49 species. Species richness was almost identical in old growth and secondary forest; but abundance was higher in old-growth. …
Instantaneous Photosynthetic Response To Temperature Of Mature Forest Canopies And Experimentally Warmed Seedlings,
2015
Michigan Technological University
Instantaneous Photosynthetic Response To Temperature Of Mature Forest Canopies And Experimentally Warmed Seedlings, Alida C. Mau
Dissertations, Master's Theses and Master's Reports - Open
Tropical trees have been shown to be more susceptible to warming compared to temperate species, and have shown growth and photosynthetic declines at elevated temperatures as little as 3oC above ambient. However, regional and global vegetation models lack the data needed to accurately represent physiological response to increased temperatures in tropical forests. We compared the instantaneous photosynthetic responses to elevated temperatures of four mature tropical rainforest tree species in Puerto Rico and the temperate broadleaf species sugar maple (Acer saccharum) in Michigan. Contrary to expectations, leaves in the upper canopy of both temperate and tropical forests had temperature …
Restoration Of Headwater And Coastal Fens In The Lake Superior Basin Of Upper Michigan,
2015
Michigan Technological University
Restoration Of Headwater And Coastal Fens In The Lake Superior Basin Of Upper Michigan, James A. Bess
Dissertations, Master's Theses and Master's Reports - Open
In 2009, research projects were initiated at Michigan Technological University to develop restoration techniques for headwater fens and coastal wetlands in the southern Lake Superior Basin in Michigan’s Upper Peninsula. The primary focus of these was to quantify the efficacy of using locally collected seeds as a technique for wetland restoration. Two primary sites were selected, the Sleeper Lake Fen complex in Luce County and the Portage Waterway-Keweenaw Bay region of Lake Superior in Baraga and Houghton Counties. At the Sleeper Lake site, a combination of heavy machinery, seeding and mulch application was used to restore a 1.6 km ditch …
Large Carbon Release Legacy From Bark Beetle Outbreaks Across Western United States,
2015
Clark University
Large Carbon Release Legacy From Bark Beetle Outbreaks Across Western United States, Bardan Ghimire, Christopher A. Williams, G. James Collatz, Melanie Vanderhoof, John Rogan, Dominik Kulakowski, Jeffrey G. Masek
Geography
Warmer conditions over the past two decades have contributed to rapid expansion of bark beetle outbreaks killing millions of trees over a large fraction of western United States (US) forests. These outbreaks reduce plant productivity by killing trees and transfer carbon from live to dead pools where carbon is slowly emitted to the atmosphere via heterotrophic respiration which subsequently feeds back to climate change. Recent studies have begun to examine the local impacts of bark beetle outbreaks in individual stands, but the full regional carbon consequences remain undocumented for the western US. In this study, we quantify the regional carbon …
Negative Feedbacks On Bark Beetle Outbreaks: Widespread And Severe Spruce Beetle Infestation Restricts Subsequent Infestation,
2015
University of Colorado Boulder
Negative Feedbacks On Bark Beetle Outbreaks: Widespread And Severe Spruce Beetle Infestation Restricts Subsequent Infestation, Sarah J. Hart, Thomas T. Veblen, Nathan Mietkiewicz, Dominik Kulakowski
Geography
Understanding disturbance interactions and their ecological consequences remains a major challenge for research on the response of forests to a changing climate. When, where, and how one disturbance may alter the severity, extent, or occurrence probability of a subsequent disturbance is encapsulated by the concept of linked disturbances. Here, we evaluated 1) how climate and forest habitat variables, including disturbance history, interact to drive 2000s spruce beetle (Dendroctonus rufipennis) infestation of Engelmann spruce (Picea engelmannii) across the Southern Rocky Mountains; and 2) how previous spruce beetle infestation affects subsequent infestation across the Flat Tops Wilderness in northwestern Colorado, which experienced …
Matrix And Edge Effects On The Maintenance Of Ecological Function In An Afromontane Protected Area,
2015
Antioch University - New England
Matrix And Edge Effects On The Maintenance Of Ecological Function In An Afromontane Protected Area, Robin M. Martino
Antioch University Dissertations & Theses
Land use type in the human dominated matrix surrounding tropical forest can influence edge effects at the forest-matrix interface. Edge effects can alter ecological processes and impact the function of forest edge ecosystems. A key ecological process that helps maintain tropical forest and is affected by forest disturbance is seed dispersal by large, fruit eating vertebrates (frugivores). This dissertation examines how the type of vegetation in the matrix, the `soft’ edge contrast of pine plantations and the `hard’ edge contrast of tea plantations, affect seed dispersal behavior of large frugivores, and the structure and composition of tree species, in forest …
