Digital Commons Network^™

Assessing The Impacts Of Climate Change On The Surface Temperature Of Inland Lakes In Michigan, Kaitlin Reinl

Dissertations, Master's Theses and Master's Reports

The aim of this study was to validate and apply a lake model for predicting the susceptibility of small inland lakes in Michigan to changes in thermal regime and increased cyanobacteria growth as a result of future climate conditions. The Freshwater Lake Model was selected, tested for sensitivity to various inputs, and validated through comparison to observed conditions. The sensitivity analysis showed that the lake model was most sensitive to solar radiation, air temperature, and air humidity. Comparison of predicted climate data with observed conditions revealed highly variable climate model error. The lake model validation was conducted using 10 lakes …

The Role Of Amino Acids In The Nitrogen Cycle Of Peatlands, Tia Scarpelli

Dissertations, Master's Theses and Master's Reports

Future release of carbon from peatlands in response to climate change may be impacted by nitrogen limitation. The current study considers the role of amino acids as a nitrogen source in peatlands. The total free amino acid (TFAA) concentration for peats ranged from 0-2.3 µM, and leucine was the primary contributor. The dominance of sedge or ericaceous shrub plant types did not significantly impact the TFAA pool. Ammonium concentrations were much greater than TFAA and nitrate concentrations. TFAA concentrations were greatest in spring and least in fall. The springtime maxima and summer decrease in concentrations were simulated in a modeling …

Dust Susceptibility At Mine Tailings Impoundments: Thermal Remote Sensing For Dust Susceptibility Characterization And Biological Soil Crusts For Dust Susceptibility Reduction, Bonnie Zwissler

Dissertations, Master's Theses and Master's Reports

Mining operations produce massive volumes of mine tailings, which are deposited as slurry into permanent tailings impoundments. An important and heavily regulated environmental hazard associated with mine tailings impoundments is fugitive dust emissions. Wind erosion of mine tailings impoundments and the resulting dusting events, especially those caused by cold weather dusting, remain an on-going challenge for the mining industry. The overall goal of this research was to develop and evaluate effective, economical, and sustainable solutions to two major issues facing mine tailings impoundments with regards to dusting: (1) dust monitoring/detection and (2) dust reduction/prevention. Specifically, the research studied iron mine …

Evaluation Of Winter Cover Crops On Nutrient Cycling, Soil Quality And Yield For Production Systems In The Mid-South, Ina Iris Sanchez

LSU Master's Theses

The practice of planting cover crops during fallow periods has increased due to the benefits provided to the soil system including improved nutrient cycling, addition of organic matter and a more diverse soil fauna resulting in better crop yield and an overall improvement of soil health. Research has shown that microbial activity is sensitive to changes in management practices and is a good indicator of whether the changes are benefiting the production system. To study the effects of cover type on corn (Zea mays L.) harvest parameters and soil chemical and biological properties a field trial consisting of a split …

The Effect Of Intermittent Pneumatic Compression On The Management Of Pain Associated With Delayed Onset Muscle Soreness, Ashley Kay Lindahl

Dissertations and Theses @ UNI

Intermittent pneumatic compression is used for the recovery of active individuals following intense exercise with little research to support its use. This study evaluates the effectiveness of intermittent pneumatic compression on musculoskeletal pain associated with DOMS among healthy college age population. Objective: Evaluate the efficacy of intermittent pneumatic compression, compared to a placebo, in the prevention of pain associated with delayed onset muscle soreness. Design: Experimental, Repeated Measure Design. Participants: Thirty healthy college-age volunteers (15 male: 21.5 ± 2.3 yrs, 179.3 ± 9.9 cm, 91.4 ± 26.4 kg; 15; female: 20.4 ± 1.5 yrs, 168.9 ± 6.9 cm, 69.1 ± …

Calcium And Magnesium Absorption And Retention By Growing Goats Offered Diets With Different Calcium Sources, Jennifer E. Long, Kenneth P. Coffey, James D. Caldwell, Dirk Philipp, Robert T. Rhein, Ashley N. Young

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Calcium addition is necessary in order to balance the high phosphorus concentrations that are characteristic of high-concentrate ruminant diets. However, calcium sources differ in their bioavailability. Our objective was to determine apparent calcium and magnesium absorption and retention in goats offered diets containing different sources of calcium. Spanish-Boer goats (n = 18; 19.6 ± 1.88 kg) were stratified by body weight (BW) and sex and randomized to dietary treatments consisting of Purina Antlermax 16 containing either calcium carbonate (CC), Calmin (CM) or Milk Cal (MC). Goats were adapted to a control, corn-based high-concentrate diet on pasture and then moved to …

Three Men In The Wilderness: Ideas And Concepts Of Nature During The Progressive Era With Theodore Roosevelt, Gifford Pinchot And John Muir, Jeffrey A. Duke

Dissertations and Theses @ UNI

When I began this research in the summer of 2014, I endeavored to find out how Americans comprehended nature in the Progressive Era. By the Progressive Era the historian Frederick Jackson Turner declared the frontier to be closed. This notion that no wide open spaces remained to be conquered altered the American people’s attitude towards nature. The perspectives of three men who were at the forefront of environmental policy illustrate how America’s understanding of nature had changed. These three men were twenty-sixth President Theodore Roosevelt, professional forester Gifford Pinchot and naturalist John Muir. Describing the similarities and differences in these …

Dancing My Adoptive Identity : An Autoethnographic Analysis Of Adoption Narratives And Performance Of Identity, Montana Jean Smith

Dissertations and Theses @ UNI

Family storytelling helps individuals make sense of the world around them. Stories not only help people understand their familial relationships, but understand the development of their identity. For adoptive children, family narratives are crucial to the creation of the child’s adoptive identity and how it intersects with the many other identities the child holds. This study considers the construction of identity from the adoptee’s point of view by use of autoethnographic and performance methods.

Using a multi-methodological approach, this thesis uses interactive interviews, autoethnography, and performance methods as a way to assess what narratives are told within an adoptive family …

Effects Of Predator Satiation On Seed Predation In New Roadside Prairie Plantings, Jessica Riebkes

Dissertations and Theses @ UNI

Restoration efforts in the tallgrass prairie ecosystem are inhibited by high seed cost and as little as 10% emergence of planted, pure live seed. This study examined the portion of loss due to seed predation and sought to reduce this predation in new roadside prairie plantings. Studies document the occurrence of predation in several plant communities and across all plant families, but little is known about how to reduce the impact of seed predators, especially in a restoration setting. On three sites where native prairie seed was recently drilled, we attempted to satiate seed predators by broadcasting a supplemental food …

Density And Diversity Of Bees In The Midwestern Agricultural Landscape: Influence Of Surrounding Agricultural Land Use And Local Plant Community Characteristics, Andrew J. Ridgway

Dissertations and Theses @ UNI

After over a century of large-scale agricultural development in the Midwestern corn-belt of the United States, many wild bee pollinator populations are in rapid decline or extirpated from their historic range. Large-bodied species, such as Bombus spp. are especially threatened, but are also valuable as efficient natural pollinators that are capable of effectively pollinating many economically important crops. Bees, therefore, have high conservation value, and pollination research has shifted focus from community inventory to population recovery efforts. These efforts include reducing the effects of habitat fragmentation and destruction using ecological restoration as well as integrating conservation strategies into agricultural land …

Testing For Modularity In The Axial Skeleton Of Fishes, Emily Meier

Honors Program Theses

The Weberian apparatus is a novel hearing adaptation of otophysan fishes (including such fishes as minnows, loaches, catfishes, characids, and South American electric eels) that allows for dramatically increased hearing capability and sensitivity. The strong functional advantage otophysans gain via the Weberian apparatus has likely created a new modular unit (set of structures that develop, evolve, and function in concert). To determine if components of the Weberian apparatus are integrated into a new developmental module, the timing and sequence of development was collected for specific anatomical structures related to the Weberian apparatus to determine developmental sequence. Patterns of development within …

Design Of A Fuzzy Logic Controlled Thermoelectric Brain Hypothermia System, Abdullah Hakan Yavuz

Turkish Journal of Electrical Engineering and Computer Sciences

Brain cooling in medicine is the most effective method in protecting brain cells during strokes, heart attacks, and brain traumas. This method, called brain hypothermia, is based on the principle that the brain is superficially cooled under controlled conditions in order to minimize cell death. In this study a helmet was designed to locally cool the brain and an effective controller was designed and tested using fuzzy logic in order to test the effectiveness of the helmet for brain hypothermia. For testing the cooling and heating performances of the helmet, currents between 0 and 60 A were applied to the …

Superparasitism And Host Discrimination Behavior Of Eretmocerus Warraenaumann & Schmidt (Hymenoptera: Aphelinidae), Abdul Hanan, Muhammad Shakeel, Xiong Zhao He, Abdul Razzaq, Qiao Wang

Turkish Journal of Agriculture and Forestry

Eretmocerus warrae Naumann and Schmidt is a thelytokous parasitoid that attacks the greenhouse whitefly, Trialeurodes vaporariorum. Its host discrimination and superparasitism behavior was investigated at different host densities and time intervals between the first and second ovipositions under laboratory conditions (22 ± 1 °C, 60 ± 5% RH, a 16:8 light:dark photoperiod). At a density of between 10 and 15 hosts, significantly fewer ovipositions in parasitized nymphs were performed by the same experienced parasitoids (SEPs) or by different experienced parasitoids (DEPs) than by naïve parasitoids (NPs) 1 and 24 h after parasitization by the first female. However, at a host …

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 …

Correlation Between Browning Degree And Composition Of Importantturkish White Wine Grape Varieties, Mustafa Ümi̇t Ünal, Aysun Şener

Turkish Journal of Agriculture and Forestry

This study was undertaken to investigate the correlation between browning degree and composition of important Turkish white wine grape varieties during the 2006 and 2007 seasons. Large seasonal and cultivar variations were found in all measured variables. The highest browning degree was found in the Narince cultivar in both years, followed by Emir and Sultaniye, with Narince being the most susceptible to browning and Sultaniye being the least. No correlation (P < 0.05) was found between browning degrees and cysteine, glutathione, polyphenol oxidase activity, or total phenolic contents. Effects of harvest year and variety on all measured parameters, except total phenolics, were statistically significant (P < 0.01).

Impacts Of Two Spatially And Temporally Isolated Anthropogenic Fire Eventson Soils Of Oak-Dominated Zagros Forests Of Iran, Javad Mirzaei

Turkish Journal of Agriculture and Forestry

Anthropogenic fires have varying effects on the oak-dominated forests of the Zagros Mountains in western Iran. The objective of this project was to investigate the effects of fire on various components of soil. For this purpose three homogeneous and neighboring sites were inspected. Site A was the unburned control. Sites B and C experienced fires about 2 and 8 years prior to the study, respectively. In comparison to the control, site B showed a decline in organic matter content (1.69 ± 0.24 vs. 1.13 ± 0.17), N amount (0.40 ± 0.05 vs. 0.19 ± 0.03), litter depth (1.20 ± 0.214 …

New Natural Weed Host Raphanus Raphanistrum L. (Brassicaceae) For Beet Necrotic Yellow Vein Virus And Its Vector Polymyxa Betae Keskin, Nazli Di̇de Kutluk Yilmaz, Emi̇ne Kaya Altop, Colin James Phillippo, Hüsrev Mennan

Turkish Journal of Agriculture and Forestry

Rhizomania is an important virus disease of sugar beet (Beta vulgaris) caused by Beet necrotic yellow vein virus (BNYVV). The virus is transmitted to the roots of host plants by the plasmodiophorid Polymyxa betae. During survey studies in September and October 2009, yellow vein banding symptoms were observed on wild radish (Raphanus raphanistrum) plants growing in spinach (Spinacia oleracea) fields with a history of rhizomania in Samsun Province in the Black Sea Region of Turkey. To verify possible alternative hosts for BNYVV and P. Betae, R. Raphanistrum and spinach plants and soil samples were collected. BNYVV was detected in the …

Foliar Spray Of Selected Plant Growth Regulators Affected The Biochemical And Antioxidant Attributes Of Spinach In A Field Experiment, Maryam Aslam, Bushra Sultana, Farooq Anwar, Hassan Munir

Turkish Journal of Agriculture and Forestry

This study explored the effects of foliar spray of selected plant growth regulators (PGRs) on the biochemical and phenolic antioxidant attributes of spinach (Spinacia oleracea) leaves. Following foliar spray at three growth stages (40, 50, and 60 days) with selected PGRs, namely humic acid (HA), Moringa oleifera leaf extract (MOLE), and 6-benzylamino purine (6-BAP), and their mixed form, the samples of spinach leaves were harvested. The analysis of foliar-treated leaves revealed the content of proline, malondialdehyde (MDA), total soluble proteins (TSPs), total chlorophyll, and total carotenoids to be 22.45-72.32 μg/g FW, 2.41-29.13 ng/g FW, 3.21-22.45 μg/g FW, 4.173-19.700 mg/g FW, …

A Modeling Study With An Artificial Neural Network: Developing Estimationmodels For The Tomato Plant Leaf Area, Hande Küçükönder, Sedat Boyaci, Adi̇l Akyüz

Turkish Journal of Agriculture and Forestry

The leaf area measurement is an important parameter in understanding the growth and physiology of a plant. Therefore, this study aimed to develop the best leaf area estimation model for tomato plants grown in plastic greenhouse conditions. The artificial neural network (ANN) and regression analysis techniques were used in the formation of a leaf area estimation model by using the leaf width and leaf length measurements determined by the linear measurement method. The plant material for the study consisted of 420 leaf samples of the Typhoon F1 tomato type grown in plastic greenhouse conditions. In the comparison of the created …

Virulence And Horizontal Transmission Of Beauveria Pseudobassiana S.A. Rehner & Humber In Ips Sexdentatus And Ips Typographus (Coleoptera: Curculionidae), Seda Kocaçevi̇k, Ali̇ Sevi̇m, Mahmut Eroğlu, Zi̇hni̇ Demi̇rbağ, İsmai̇l Demi̇r

Turkish Journal of Agriculture and Forestry

Ips sexdentatus (Boerner) and I. Typographus (Linnaeus) (Coleoptera: Curculionidae) are considered to be important destructive pests of coniferous forests in Europe and Asia. In this study, the efficacy of Beauveria pseudobassiana strain ARSEF 9271 isolated from Dendroctonus micans (Kugelann) (Coleoptera: Curculionidae) was evaluated against I. Sexdentatus and I. Typographus adults. Insects were treated with different conidial concentrations of the fungus to determine the virulence. A conidial suspension of 1 × 108 conidia mL-1 caused 100% mortality in both I. Sexdentatus and I. Typographus within 5 and 7 days, respectively. Additionally, 100% mycosis was obtained in the concentration-response experiments for both …

Morphological, Chemical, And Genetic Diversity Of Wild Myrtle(Myrtus Communis L.) Populations In Sicily, Sara Melito, Salvatore La Bella, Federico Martinelli, Ignazio Cammalleri, Teresa Tuttolomondo, Claudio Leto, Angela Fadda, Maria Giovanna Molinu, Maurizio Mulas

Turkish Journal of Agriculture and Forestry

Myrtus communis L. İs a shrub widespread in the Mediterranean area. The interest in this species is growing, mainly due to its pharmacological and aromatic properties. The overexploitation of wild populations induced increasing degradation of plant cover with serious risk of loss of genetic diversity. This research explored the morphological, chemical, and genetic diversity of wild myrtle populations in Sicily, with the aim to provide a first characterization of a core collection of 36 accessions from 7 localities for future domestication programs. Amplified fragment length polymorphism fingerprinting generated 152 polymorphic fragments. STRUCTURE analysis identified three genetic clusters (A, B, and …

Determination Of Fatty Acids And Volatile Compounds In Fruits Of Rosehip(Rosa L.) Species By Hs-Spme/Gc-Ms And Im-Spme/Gc-Ms Techniques, Zehra Tuğba Murathan, Mozgan Zarifikhosroshahi, Nesi̇be Ebru Kafkas

Turkish Journal of Agriculture and Forestry

In this study, we aimed to compare fatty acid and volatile compound compositions of four rosehip species, namely Rosa pimpinellifolia, R. Villosa, R. Canina, and R. Dumalis, by gas chromatography with flame ionization detector (GC/FID) and headspace and immersion solid-phase microextraction gas chromatography-mass spectrometry (HS-SPME/GC-MS and Im-SPME/GC-MS) techniques. The total lipid contents in fruits of the rosehip species varied from 5.83% (R. Villosa) to 7.84% (R. Dumalis). A total of 21 fatty acids were detected and quantified. In all species, except R. Canina, polyunsaturated fatty acids (PUFAs) predominated over saturated fatty acids (SFAs) and monounsaturated fatty acids (MUFAs). Palmitic acid …

The Effect Of Fire On The Vegetation And Soil Properties Of Ungrazed Shortgrasssteppe Rangeland Of The Eastern Anatolia Region Of Turkey, Şule Erkovan, Ali̇ Koç, Mehmet Keri̇m Güllap, Hali̇l İbrahi̇m Erkovan, Serdar Bi̇len

Turkish Journal of Agriculture and Forestry

Fire is an important driver of ecological processes and a management tool in humid rangelands, but it is less known in semiarid rangelands at cool temperatures. The aim of this study was to determine the effect of fire on some vegetation and soil properties of the highland steppe rangelands of the Eastern Anatolia region of Turkey. Canopy coverage, botanical composition as a functional group, aboveground biomass, litter mass, bacteria and fungi numbers, soil moisture, pH, organic matter, available NO3, available NH4, total nitrogen, total phosphorus, total calcium, total potassium, total magnesium, total sodium, cation exchange capacity, and calcium carbonate contents …

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, …

High Levels Of Segregation Distortion In The Molecular Linkage Map Of Bread Wheat Representing The West Asia And North Africa Region, Faheem Shahzad Baloch, Ahmad Alsaleh, Enver Ersoy Andeden, Rüştü Hati̇poğlu, Miloudi Nachit, Hakan Özkan

Turkish Journal of Agriculture and Forestry

The Fertile Crescent is a primary center of wheat domestication and diversity. Despite its importance for bread wheat breeding, few efforts have been made to fully understand the genetic structure of the Anatolian bread wheat. A lack of information regarding the genetic structure of the bread wheat from this region is evident. Therefore, this study aimed to provide new insights into the genetic structure of bread wheat from Anatolia. A genetic linkage map was constructed based on recombinant inbred lines derived from a cross between the Turkish cultivar Gerek-79 and the Moroccan cultivar Arrehane, by using DArT markers anchored with …

Needle Characteristics Of Lebanon Cedar (Cedrus Libani A.Rich.): Degradation Of Epicuticular Waxes And Decrease Of Photosynthetic Rates With Increasing Needle Age, Ayli̇n Güney, Reiner Zimmermann, Anna Krupp, Klaus Haas

Turkish Journal of Agriculture and Forestry

The evergreen conifer Cedrus libani A.Rich. İs frost- and drought-tolerant and of economic and ecological importance. It has valuable timber and thus has promising potential for cultivation within and outside its natural distribution. Our aim was to determine the morphological and physiological characteristics of C. Libani needle leaves with respect to epicuticular waxes, photosynthetic assimilation rates, and needle age. The study was conducted in the Cedar Research Forest near Elmalı, Antalya (SW Turkey) at 1650 m a.s.l. An equation to calculate needle surface area from needle length was created (R2 = 0.96) for adult cedar needles. The form factor for …

Occurrence Of A Microsporidium In The Predatory Beetle Calosoma Sycophanta L. (Coleoptera: Carabidae), Mustafa Yaman, Mahmut Eroğlu, Renate Radek

Turkish Journal of Agriculture and Forestry

Calosoma sycophanta L. (Coleoptera: Carabidae) is a voracious predatory beetle that feeds on several important lepidopteran pests. It is mass reared in laboratory breeding and released against forest pests. Any infection in this beetle is undesirable because it impacts production of effective and healthy beetles. In the present study, a microsporidian pathogen was found in C. sycophanta. Mature spores of the pathogen are single, uninucleate, oval, and small, measuring about 3.04 × 1.7 µm. The spore wall is 100 to 110 nm thick and consists of two layers: an electron-dense outer layer, the exospore (30-35 nm), and an electron-lucent inner …

Influence Of Nacl-Salinity On Pb-Uptake Behavior And Growth Of River Red Gum Tree (Eucalyptus Camaldulensis Dehnh.), Muhammad Farrakh Nawaz, Sadaf Gul, Muhammad Ayyoub Tanvir, Javaid Akhtar, Samira Chaudary, Irfan Ahmad

Turkish Journal of Agriculture and Forestry

Lead (Pb) is one of the most toxic and persistent elements, with no known biological role. High concentrations of lead enter saline soils through anthropogenic activities and industrial waste. The decontamination of Pb polluted sites through phytoremediation, especially by using woody plants, is an attractive approach. Eucalyptus camaldulensis is a good accumulator of Pb and a recommended tree species for reclamation of saline soils. However, there is very limited knowledge about the Pb-uptake behavior of Eucalyptus camaldulensis under saline conditions. The objective of this study was to examine the simultaneous impact of NaCl salinity and Pb stress on the phytoremedial …

Houba Retrotransposon-Based Molecular Markers: A Tool For Variation Analysis In Rice, Gözde Yüzbaşioğlu, Si̇bel Yilmaz, Nermi̇n Gözükirmizi

Turkish Journal of Agriculture and Forestry

Rice is one of the most important crop plants as well as a model organism used for genetic studies. Transposons, especially retrotransposons, have a significant impact on the rice genome. A considerable percentage of the rice genome is composed of transposons (about 35%). Thus, transposons are an important internal factor for the genome evolution of rice varieties. In this study, we performed fing?erprint analyses of 37 Oryza sativa L. Cultivars using an IRAP marker. For this purpose, we designed IRAP primers specific to Houba (Tos5/Osr13), RIRE1 and Hopi (Osr27), and Osr30 retrotransposons, the most abundant retrotransposons in the rice genome. …

Selected Yield And Qualitative Parameters Of Broccoli In Dependence On Nitrogen,Sulfur, And Zinc Fertilization, Miroslav Slosár, Anton Uher, Alena Andrejiová, Tünde Juríková

Turkish Journal of Agriculture and Forestry

The effect of nitrogen (N), sulfur (S), and zinc (Zn) fertilization on the yield quantity and selected qualitative parameters of broccoli was studied in an experiment carried out in Nitra (Slovak Republic) during 2011 and 2012. In this experiment, the following fertilization treatments were tested: control; N200S80 (fertilized to the supply level: 200 kg N ha-1 and 80 kg S ha-1); N200S100 (supply level: 200 kg N ha-1 and 100 kg S ha-1), and N200S100 Zn (supply level: 200 kg N ha-1 and 100 kg S ha-1 + foliar zinc application). Compared to the control treatment, higher broccoli yield was …