Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (66)
- TÜBİTAK (47)
- Eastern Washington University (33)
- University of Colorado Law School (28)
- West Chester University (16)
-
- The University of Maine (12)
- University of Tennessee, Knoxville (12)
- Stephen F. Austin State University (5)
- Utah State University (4)
- Clemson University (3)
- University of Montana (3)
- University of Nevada, Las Vegas (3)
- Western Michigan University (3)
- Marshall University (2)
- University of Arkansas, Fayetteville (2)
- University of New Hampshire (2)
- Dartmouth College (1)
- Kennesaw State University (1)
- Michigan Technological University (1)
- Minnesota State University, Mankato (1)
- Old Dominion University (1)
- SIT Graduate Institute/SIT Study Abroad (1)
- SelectedWorks (1)
- The University of San Francisco (1)
- University of Massachusetts Amherst (1)
- University of Northern Iowa (1)
- University of Rhode Island (1)
- University of Richmond (1)
- University of Wisconsin Milwaukee (1)
- Yale University (1)
- Keyword
-
- National Smokejumper Association (33)
- Smokejumpers -- United States (33)
- Smokejumping (33)
- Wildfire fighters (33)
- Obituaries (30)
-
- Congress (12)
- Forests (10)
- Natural resources law (10)
- U.S. Forest Service (10)
- BLM (9)
- Climate change (9)
- Public lands (9)
- U.S. Bureau of Land Management (9)
- USFS (9)
- Conservation (8)
- EIS (8)
- National Environmental Policy Act (8)
- Recreation (8)
- United States (8)
- Environmental impact statement (7)
- FLPMA (7)
- Federal Land Policy and Management Act (7)
- Mining (7)
- NFMA (7)
- Secretary of the Interior (7)
- Timber (7)
- Federal lands (6)
- Forest management (6)
- NEPA (6)
- National Forest Management Act (6)
- Publication
-
- Turkish Journal of Agriculture and Forestry (47)
- Smokejumper Obituaries (30)
- The Future of Natural Resources Law and Policy (Summer Conference, June 6-8) (28)
- Nebraska Forest Service: Publications (23)
- JFSP Research Project Reports (17)
-
- Gordon Natural Area History & Strategic Plan Documents (13)
- USDA Forest Service / UNL Faculty Publications (12)
- Masters Theses (7)
- Electronic Theses and Dissertations (6)
- Doctoral Dissertations (4)
- The Rural Firefighter (4)
- Timber Talk: Nebraska Forest Industry Newsletter (4)
- Faculty Publications (3)
- Forest Management Faculty Publications (3)
- Forestry, Trees, and Timber (3)
- Joint Fire Science Program Briefs (2007-2012) (3)
- Maine Policy Review (3)
- National Smokejumper Association Meeting Minutes (3)
- Public Policy and Leadership Faculty Publications (3)
- Publications (3)
- Earth Systems Research Center (2)
- Watershed Sciences Faculty Publications (2)
- Accomplishments and History (1)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (1)
- All U.S. Government Documents (Utah Regional Depository) (1)
- Biological Sciences Faculty Research (1)
- Biology Faculty Publications (1)
- Conservation/Energy Alternatives (1)
- Dartmouth Scholarship (1)
- Deer and Non-native Invasive Plant Impact Study Documents (1)
- Publication Type
Articles 121 - 150 of 255
Full-Text Articles in Life Sciences
Black Walnut, Charles Michler, Keith Woeste, Paula Pijut
Black Walnut, Charles Michler, Keith Woeste, Paula Pijut
USDA Forest Service / UNL Faculty Publications
Black walnut (Juglans nigra L.), also known as eastern black walnut or American walnut, is a fine hardwood species in the family Juglandaceae, section Rhysocaryon (Manning 1978). In general, J. nigra will not cross with species in the sections Cardiocaryon or Trachycaryonv, but J. nigra will cross with J. ailantifolia (Cardiocaryon) (Williams 1990). Juglans nigra will also hybridize to some extent with other Juglans species (Dioscaryon and Rhysocaryon), and one hybrid is recognized: J. nigra × J. regia = J. x intermedia Carr. (USDA-NRCS 2004). Native to the deciduous forests of the eastern United States …
Development And Analysis Of A 12-Year Daily 1-Km Forest Fire Dataset Across North America From Noaa/Avhrr Data, Ruiliang Pu, Zhanqing Li, Peng Gong, Ivan Csiszar, Robert Fraser, Wei-Min Hao, Shobha Kondragunta, Fuzhong Weng
Development And Analysis Of A 12-Year Daily 1-Km Forest Fire Dataset Across North America From Noaa/Avhrr Data, Ruiliang Pu, Zhanqing Li, Peng Gong, Ivan Csiszar, Robert Fraser, Wei-Min Hao, Shobha Kondragunta, Fuzhong Weng
USDA Forest Service / UNL Faculty Publications
Fires in boreal and temperate forests play a significant role in the global carbon cycle. While forest fires in North America (NA) have been surveyed extensively by U.S. and Canadian forest services, most fire records are limited to seasonal statistics without information on temporal evolution and spatial expansion. Such dynamic information is crucial for modeling fire emissions. Using the daily Advanced Very High Resolution Radiometer (AVHRR) data archived from 1989 to 2000, an extensive and consistent fire product was developed across the entire NA forest regions on a daily basis at 1-km resolution. The product was generated following data calibration, …
Accelerating Adoption Of Fire Science And Related Research, Jamie Barbour
Accelerating Adoption Of Fire Science And Related Research, Jamie Barbour
JFSP Research Project Reports
Since its inception in 1998, the Joint Fire Science Program (JFSP) has funded over 350 projects. The Joint Fire Science Program has long recognized that the investments made in wildland fire science need to be accompanied by an emphasis on science interpretation and delivery. Program success is ultimately measured by how well information from research efforts is being conveyed to resource managers and end users, and whether this information is improving management decisions. This project introduced a conceptual model for an adaptive process to improve the delivery of scientific information. We developed this process through these steps: 1. Creating a …
Atmospheric Fire Risk (Haines Index) In A Changed Climate, Julie Winkler, Brian Potter
Atmospheric Fire Risk (Haines Index) In A Changed Climate, Julie Winkler, Brian Potter
JFSP Research Project Reports
Previous studies of wildland fire potential under a perturbed climate have focused on potential changes in near-surface atmospheric parameters (e.g., temperature, humidity, and precipitation) and vegetation changes. However, above-ground atmospheric conditions, such as atmospheric stability, also play a critical role in fire behavior, especially for larger fires. This study employed the widely-used Haines Index as a measure of above-ground conditions relevant to wildland fire and investigated the potential changes in the Haines Index over the next 100 years. The analysis is based on simulations from the most recent version of the National Center for Atmospheric Research (NCAR) Community Climate System …
An Automated System For Evaluating Bluesky Predictions Of Smoke Impacts On Community Health And Ecosystems, Robert Solomon
An Automated System For Evaluating Bluesky Predictions Of Smoke Impacts On Community Health And Ecosystems, Robert Solomon
JFSP Research Project Reports
Predictions of smoke impacts on communities and ecosystems are currently being made by the BlueSky smoke forecast system; providing real-time predictions of surface smoke concentrations from prescribed fire, wildfire, and agricultural burn activities. Currently operational in the Pacific Northwest, BlueSky has already a demonstrated success regarding what inter-agency collaboration can accomplish. A critical component of BlueSky that needed to be addressed was the development of an automated verification system to evaluate predicted impacts from smoke on communities and ecosystems. A verification system is necessary because land managers need to evaluate their burn decisions against potential National Ambient Air Quality Standard …
Fire Managers Field Guide: Hazardous Fuels Management In Subtropical Pine Flatwoods And Tropical Pine Rocklands, Joseph J. O'Brien, Kathyryn A. Mordecai, Leslie Wolcott, James Snyder, Kenneth Outcalt
Fire Managers Field Guide: Hazardous Fuels Management In Subtropical Pine Flatwoods And Tropical Pine Rocklands, Joseph J. O'Brien, Kathyryn A. Mordecai, Leslie Wolcott, James Snyder, Kenneth Outcalt
JFSP Research Project Reports
Preface This document, The Fire Managers Field Guide: Hazardous Fuels Management in Sub-tropical Pine Flatwoods and Tropical Pine Rocklands is intended to provide an overview of techniques and tactics under actual use for addressing hazardous fuels in tropical and subtropical pine forests found in Florida, the Bahamas and elsewhere in the Caribbean. The information presented here was distilled from peer reviewed literature, technical reports, and the experiences of on-theground fire managers. Managing fuels is complex and idiosyncratic. This guide is intended to provide only a broad introduction to currently available techniques; some well known and others newer and untested. The …
Cross-Training Professionals On Reducing Property Loss At The Wildland-Urban Interface, Anne S. Fege
Cross-Training Professionals On Reducing Property Loss At The Wildland-Urban Interface, Anne S. Fege
JFSP Research Project Reports
Most wildfire education programs have relied primarily on homeowner information and education. This project focuses on the role of business professionals who are often hired to design, build, maintain or mitigate the home and surrounding landscape or who otherwise advise homeowners and affect their decisions. Such professionals include architects, builders, insurance agents, landscape architects and contractors, planners, media, real estate professionals and others. The findings of this project were three-fold. First, by participating in this program, businesses and professionals gain a marketable service in the form of a greater understanding in wildfire mitigation as well as better business practices with …
Developing An Analysis And Planning Framework For District-Level Fuels Treatment Projects (Final Project Report), Alan Ager
JFSP Research Project Reports
Widespread fuel reduction programs have been initiated in many parts of the USA in response to a growing threat of wildland fire. Urban encroachment, fuels buildup from fire suppression, and drought all have been linked to increasing wildfire frequency and severity. Developing effective mitigation strategies is a challenging problem, especially on vast tracts of federally-managed wildlands in the western U.S. Fuel reduction activities on Federal lands are generally difficult to plan and implement due to cost, public expectations, and land management regulations. State of the art wildfire modeling is frequently required to demonstrate the benefits of fuels reduction treatments and …
Developing A Science Integration Strategy For Jfsp, Jamie Barbour
Developing A Science Integration Strategy For Jfsp, Jamie Barbour
JFSP Research Project Reports
The mission of the Joint Fire Science Program (JFSP) is to produce high quality research findings to inform wildland fire and fuel managers’ decisions. Since its inception in 1998, the program has funded nearly 400 studies and has generated a tremendous amount of information and analytical tools. As the JFSP moves into the future, a Science Delivery Strategy is needed to: 1) ensure that this base of information finds application, and 2) create a more systematic way to identify and organize new work that will encourage its rapid assimilation by the management community. The attached Science Delivery Strategy was developed …
Development And Demonstration Of Smoke Plume, Fire Emissions, And Preand Post-Prescribed Fire Fuel Models On North Carolina Coastal Plain Forest Ecosystems, Robert Meckler, Gary Achtemier, Chris Geron, Miriam Rorig, David Brownlie
Development And Demonstration Of Smoke Plume, Fire Emissions, And Preand Post-Prescribed Fire Fuel Models On North Carolina Coastal Plain Forest Ecosystems, Robert Meckler, Gary Achtemier, Chris Geron, Miriam Rorig, David Brownlie
JFSP Research Project Reports
The objectives are to (1) Inventory, map, and model live and down woody debris/fuels biomass utilizing USDA Forest Service Forest Inventory and Analysis P2 and P3 field plot protocols, develop fuel loading formulas for fire behavior models in the Alligator River National Wildlife Refuge and the Air Force Dare County Bombing Range in the North Carolina Coastal Plain, and incorporate data from Coastal Plain forest types into the fuel characteristic classification (FCC) system and the FARSITE fire behavior model; (2) Validate the USDA Forest Service PB-Coastal Plain smoke model, the BlueSky smoke prediction system, and the BlueSky Rapid Access Information …
Soil Response To Season And Interval Of Prescribed Fire In A Ponderosa Pine Forest Of The Blue Mountains, Oregon, D. Zabowski, W. G. Thies, J. Hatten, A. Ogden
Soil Response To Season And Interval Of Prescribed Fire In A Ponderosa Pine Forest Of The Blue Mountains, Oregon, D. Zabowski, W. G. Thies, J. Hatten, A. Ogden
JFSP Research Project Reports
Soil properties were examined at a season of burn and burn interval study located in the Malheur National for responses to prescribed burns used to reduce fuel loads and wildfire hazard. Prescribed burn comparisons included spring vs. fall burning, with either one 15-year interval burn or two 5-year interval burns of each season. Results showed that major change to soil organic matter was a reduction in the amount of O horizon. The percent bare ground increased with both spring and fall burning and was highest with multiple burns, indicating a loss of O horizon cover. There was also a decrease …
Digital Photo Series (Natural Fuels Photo Series), Clinton S. Wright, Robert E. Vilnakek, Roger D. Ottmar, Paige C. Eagle
Digital Photo Series (Natural Fuels Photo Series), Clinton S. Wright, Robert E. Vilnakek, Roger D. Ottmar, Paige C. Eagle
JFSP Research Project Reports
The Digital Photo Series (DPS) is a web-based application that provides access to the Natural Fuels Photo Series database and photographs. The DPS works through a user’s internet browser, but has also been designed to work as a stand-alone application when the computer is disconnected from the internet. A user-friendly interface allows users to browse, query, and download photo series data and high-quality photographs. The Digital Photo Series is intended to complement, not replace, the printed photo series volumes.
A Comprehensive Guide To Fuels Treatment Fractices For Ponderosa Pine In The Black Hills, Colorado Front Range, And Southwest, M. E. Hunter, W. D. Shepperd, L. B. Lentile, J. E. Lundquist, M. G. Andreu, J. L. Butler, F. W. Smith
A Comprehensive Guide To Fuels Treatment Fractices For Ponderosa Pine In The Black Hills, Colorado Front Range, And Southwest, M. E. Hunter, W. D. Shepperd, L. B. Lentile, J. E. Lundquist, M. G. Andreu, J. L. Butler, F. W. Smith
JFSP Research Project Reports
The objective of this paper is to present recommendations for fuels treatments in ponderosa pine forests in the Southwest, Colorado Front Range, and Black Hills of South Dakota. We have synthesized existing knowledge from the peer-reviewed literature and administrative studies and acquired local knowledge through a series of discussions with fuels treatment practitioners. We describe specific treatments, the circumstances under which they can be applied, and treatment effects. We provide recommendations related to where, how, and how often fuels treatments may be prescribed to achieve desired outcomes. Desired outcomes address social, political, economic, and ecological factors.
Effects Of Fire On Kuenzler’S Hedgehog Cactus (Echinocereus Fendleri Var. Kuenzleri), David B. Wester, Colton M. Britton
Effects Of Fire On Kuenzler’S Hedgehog Cactus (Echinocereus Fendleri Var. Kuenzleri), David B. Wester, Colton M. Britton
JFSP Research Project Reports
Kuenzler’s cactus (Echinocereus fendleri var. kuenzleri [Castetter, Pierce and Schwerin] L. Benson]) is a federally- and state-listed endangered species that is known to occur in pinyon-juniper habitat in the mountains of south central New Mexico in Lincoln, Otero, Chaves and Eddy counties. Presence of this species affects the management of its habitat with prescribed burning. However, there has been no research that has documented the response of Kuenzler’s cactus to fire. This project was initiated in 2002 to provide information on habitat characteristics of Kuenzler’s cacti and to investigate its response to fire. Because of the protected status of the …
Interactions Among Prescribed Fire, Soil Attributes, Fungal Mats, And Mycorrhizal Fungus Fruiting Patterns In An Old-Growth Pinus Ponderosa / Abies ConcolorStand In Crater Lake National Park, Oregon, Usa, Kermit Cromack, Randy Molina, Jane E. Smith, James M. Trappe, Efren Cazares-Gonzales, Mary Rasmussen, Matt Trappe
Interactions Among Prescribed Fire, Soil Attributes, Fungal Mats, And Mycorrhizal Fungus Fruiting Patterns In An Old-Growth Pinus Ponderosa / Abies ConcolorStand In Crater Lake National Park, Oregon, Usa, Kermit Cromack, Randy Molina, Jane E. Smith, James M. Trappe, Efren Cazares-Gonzales, Mary Rasmussen, Matt Trappe
JFSP Research Project Reports
The first of its kind, Soil characteristics tend to occur as a suite, Pre-treatment patterns: a silver lining, Prescribed burn treatment effects on soil attributes, Fruiting patterns primarily influenced by soil C:N ratios, Fungal indicator guilds, Prescribed burn treatment effects on fungal fruiting patterns, Prescribed burn treatment effects on fungal mats, Summary and take-home message.
Soil Response To Season And Interval Of Prescribed Fire In A Ponderosa Pine Forest Of The Blue Mountains, Oregon, D. Zabowski, W. G. Thies, J. Hatten, A. Ogden
Soil Response To Season And Interval Of Prescribed Fire In A Ponderosa Pine Forest Of The Blue Mountains, Oregon, D. Zabowski, W. G. Thies, J. Hatten, A. Ogden
JFSP Research Project Reports
Soil properties were examined at a season of burn and burn interval study located in the Malheur National for responses to prescribed burns used to reduce fuel loads and wildfire hazard. Prescribed burn comparisons included spring vs. fall burning, with either one 15-year interval burn or two 5-year interval burns of each season. Results showed that major change to soil organic matter was a reduction in the amount of O horizon. The percent bare ground increased with both spring and fall burning and was highest with multiple burns, indicating a loss of O horizon cover. There was also a decrease …
Effects Of Fire Severity And Distance From Unburned Edge On Mammalian Community Post-Fire Recovery, Jay Diffendorfer, Wayne Spencer, Scott Tremor, Jan Beyers
Effects Of Fire Severity And Distance From Unburned Edge On Mammalian Community Post-Fire Recovery, Jay Diffendorfer, Wayne Spencer, Scott Tremor, Jan Beyers
JFSP Research Project Reports
This final report summarizes key findings relative to the five major objectives listed in our proposal, along with the crosswalk of accomplished and future deliverables. Additional details concerning objectives, methods, results, and recommendations are presented in Attachment A. Each of our major objectives is listed below with a brief summary of findings to date. Because we only recently finished the final session of data collection, all findings are preliminary and may change as more comprehensive statistical analyses are completed. 1. Evaluate the effects of fire on southern California rodent, large mammal, and bat diversity and study patterns of post fire …
Effects Of Fuel Treatments And Wildfire On The Avifauna Of The Pine Rockland Ecosystem In Southern Florida., John D. Lloyd, Gary L. Slater, Skip Snow, James R. Snyder
Effects Of Fuel Treatments And Wildfire On The Avifauna Of The Pine Rockland Ecosystem In Southern Florida., John D. Lloyd, Gary L. Slater, Skip Snow, James R. Snyder
JFSP Research Project Reports
The response of plants and animals in the pine forests of southern Florida to variation in fire and hydrological regimes remains inadequately described, hindering the ability of resource managers to manipulate fire and water to achieve desired ecological outcomes. In this study, we took advantage of natural variation in two measures of fire history (the number of days since last fire and the number of times an area had been burned during the previous ten years) and one measure of hydrology (water table elevation) to explore how plants, breeding birds, and wintering birds in slash-pine (Pinus elliottii var. densa) forests …
Fuels Reduction In A Western Coniferous Forest: Effects On Two Sympatric Ungulates And Their Habitat, Ryan A. Long, Janet Rachlow, Marty Vavra, John G. Kie
Fuels Reduction In A Western Coniferous Forest: Effects On Two Sympatric Ungulates And Their Habitat, Ryan A. Long, Janet Rachlow, Marty Vavra, John G. Kie
JFSP Research Project Reports
We evaluated effects of an experimental fuels reduction program on elk, mule deer, and their habitat at the Starkey Experimental Forest and Range (Starkey) in northeastern Oregon. From 2001 to 2003, 26 stands of true fir and Douglas-fir that suffered high rates of mortality from an outbreak of spruce budworm were selectively thinned (spring or summer) and burned (fall) while 27 similar stands were left untreated to serve as experimental controls. We used location data for elk and mule deer collected during spring (1 April–14 June) and summer (15 June–31 August) of 1999–2006 to compare use of treated and untreated …
El Mundo Entero Es Nuestro Bosque: Política Forestal Y Cooperación Internacional, Pablo Martínez De Anguita
El Mundo Entero Es Nuestro Bosque: Política Forestal Y Cooperación Internacional, Pablo Martínez De Anguita
Yale School of the Environment Bulletin Series
No abstract provided.
Attitudes Of Local Communities Toward Biodiversity Conservation In The Uluguru Rain Forests Of The Eastern Arc Mountains Of Tanzania, Geofrey Soka
Geofrey Soka
No abstract provided.
Research On Applying An Anchor Mechanism To Orchard And Vineyard Tractors Produced In Turkey, Hasan Si̇lleli̇
Research On Applying An Anchor Mechanism To Orchard And Vineyard Tractors Produced In Turkey, Hasan Si̇lleli̇
Turkish Journal of Agriculture and Forestry
In recent years, orchard and vineyard tractors have become widespread in Turkey. Owing to their narrow-track width and work environment, these tractors overturn easily. Therefore, tractor manufacturers have to fabricate roll-over protective structures (ROPS) that are high enough to prevent continuous rolling. In this study, an innovative system that increases the safety of the driver and decreases the ROPS height was tested on 20 tractors that are currently available for retail sale in Turkey. In order to determine the effect of an anchor mechanism on the height of the ROPS, the following parameters were investigated: tractor mass, the type of …
Effect Of Tillage Implements And Operating Speeds On Soil Physical Properties And Wheat Emergence, Mustafa Gökalp Boydaş, Ni̇hat Turgut
Effect Of Tillage Implements And Operating Speeds On Soil Physical Properties And Wheat Emergence, Mustafa Gökalp Boydaş, Ni̇hat Turgut
Turkish Journal of Agriculture and Forestry
Tillage is an operation to improve soil conditions for optimal crop emergence and yield. Different tillage implements and operational variables may affect soil physical properties. An experiment with different primary tillage implements and operating speeds and their influence on physical properties of loamy soil and wheat seedling emergence was conducted in northeast Anatolia in 2003. The compared tillage implements were: 1. Moldboard plow (MP); 2. Slatted moldboard plow (SMP); 3. Disk plow (DP); 4. Chisel plow (CP); and primary tillage + rotary harrow systems (mounted at the back of this primary tillage): 5. MPH, 6. SMPH, 7. DPH, and 8. …
The Effects Of Row Spacing On Yield And Yield Components Of Full Season And Double-Cropped Soybean, Sevgi̇ Çalişkan, Mehmet Arslan, İlhan Üremi̇ş, Mehmet Emi̇n Çalişkan
The Effects Of Row Spacing On Yield And Yield Components Of Full Season And Double-Cropped Soybean, Sevgi̇ Çalişkan, Mehmet Arslan, İlhan Üremi̇ş, Mehmet Emi̇n Çalişkan
Turkish Journal of Agriculture and Forestry
Compared to full season soybean cropping systems, seed yield reduction is a major concern in double-cropped soybean production systems. This study was conducted at the Research Farm of Mustafa Kemal University, Hatay, Turkey, to determine if it is possible to enhance the yield of both full season and double-cropped soybean by narrowing row spacing. Two soybean cultivars, A3935 and S4240, were planted using row widths of 30, 50, and 70 cm, and twin row (50 25 50 cm) in 2004 and 2005. Seed yield and the other investigated plant parameters of double-cropped soybean were lower compared to full season soybean. …
Effects Of Soil Solarization And Organic Amendment Treatments For Controlling Meloidogyne Incognita In Tomato Cultivars In Western Anatolia, Gali̇p Kaşkavalci
Effects Of Soil Solarization And Organic Amendment Treatments For Controlling Meloidogyne Incognita In Tomato Cultivars In Western Anatolia, Gali̇p Kaşkavalci
Turkish Journal of Agriculture and Forestry
The efficacy of soil solarization, Dazomet, chicken manure (CM), olive processing waste (OPW), and soil solarization in combination with CM or OPW or half doses of Dazomet against Meloidogyne incognita on tomato cultivars was investigated in greenhouses in western Anatolia, Turkey, between 2002 and 2004. The maximum soil temperature average was increased 47.1 °C by soil solarization alone at the 15 cm soil depth of soil in the first year. Soil solarization alone and in combination with CM increased the mean of maximum soil temperature by 41.2 and 40.9 °C respectively, at the 15 cm soil depth in the second …
Estimates Of Broad-Sense Heritability For Seed Yield And Yield Components Of Grass Pea (Lathyrus Sativus L.), Mevlüt Türk, Sebahatti̇n Albayrak, Necmetti̇n Çeli̇k
Estimates Of Broad-Sense Heritability For Seed Yield And Yield Components Of Grass Pea (Lathyrus Sativus L.), Mevlüt Türk, Sebahatti̇n Albayrak, Necmetti̇n Çeli̇k
Turkish Journal of Agriculture and Forestry
This study was carried out to estimate the broad-sense heritability for seed yield and some yield components of 15 grass pea (Lathyrus sativus L.) genotypes in 2000-2002 at Bursa, in the Marmara region of Turkey. The experimental design was a randomized complete block design with 3 replications. The heritabilities for seed yield, plant height, pod number, seed number per pod, seed number per plant, 1000-seed weight, biologic yield, and harvest index were estimated as 30%, 42%, 61%, 19%, 56%, 75%, 82%, and 49%, respectively. It was found that biologic yield was the trait least affected by environment, followed by 1000-seed …
The Effect Of Plant Growth Promoting Rhizobacteria On Barley Seedling Growth, Nutrient Uptake, Some Soil Properties, And Bacterial Counts, Ramazan Çakmakçi, Mesude Fi̇gen Dönmez, Ümmügülsüm Erdoğan
The Effect Of Plant Growth Promoting Rhizobacteria On Barley Seedling Growth, Nutrient Uptake, Some Soil Properties, And Bacterial Counts, Ramazan Çakmakçi, Mesude Fi̇gen Dönmez, Ümmügülsüm Erdoğan
Turkish Journal of Agriculture and Forestry
This study was conducted with barley in greenhouse conditions in order to investigate seed inoculation with 5 different N_2-fixing (Bacillus licheniformis RC02, Rhodobacter capsulatus RC04, Paenibacillus polymyxa RC05, Pseudomonas putida RC06, and Bacillus OSU-142) and 2 different phosphate-solubilising (Bacillus megaterium RC01 and Bacillus M-13) bacteria in comparison to control and mineral fertiliser (N and P) application. Among the strains used in the present study, 6 plant growth promoting rhizobacteria (PGPR) stimulated indole acetic acid (IAA) production and 3 of them stimulated phosphate solubilisation; all bacterial strains fixed N_2 and significantly increased the growth of barley. Available phosphate in soil was …
Bending Moment Capacity Of Metal Plate Connected Wood-Splice Joints Constructed With Red Pine (Pinus Brutia Ten.) Lumber, Ergün Günteki̇n
Bending Moment Capacity Of Metal Plate Connected Wood-Splice Joints Constructed With Red Pine (Pinus Brutia Ten.) Lumber, Ergün Günteki̇n
Turkish Journal of Agriculture and Forestry
The ultimate bending moment carrying capacity of metal-plate-connected (MPC) wood-truss-splice joints constructed with red pine (Pinus brutia Ten.) lumber was investigated. Lumber 38 mm by 90 mm and 3 different sizes of metal plate connectors were utilized in constructing the joints. A 4-point loading method was used to determine the joints' bending moment capacity. Tensile splice joints were tested in both flat- and edgewise positions. The effects of tooth orientation and metal plate size on the bending moment capacity of the joints were investigated. The results indicated that both tooth orientation and plate size significantly influenced the joints' bending moment …
Depth Of Dormancy And Desiccation Tolerance In Acer Trautvetteri Medv. Seeds, Mustafa Yilmaz
Depth Of Dormancy And Desiccation Tolerance In Acer Trautvetteri Medv. Seeds, Mustafa Yilmaz
Turkish Journal of Agriculture and Forestry
This first exploratory study on the seed physiology of Acer trautvetteri, a broadleaved tree found in Caucasia and northern Turkey, demonstrated that A. trautvetteri seeds exhibit physiological dormancy and require about 3 months of chilling for complete dormancy loss. Germination percentages significantly increased with the chilling duration and were 38.67%, 76.00%, and 96.00% after 1, 2, and 3 months of chilling, respectively. Moreover, while the seeds can be safely dried to at least 10% moisture content, reducing the moisture content to 3% killed all the seeds. Acer species exhibit different seed characteristics in terms of seed dormancy existence and desiccation …
Species Richness And Soil Properties In Pinus Ponderosa Forests: A Structural Equation Modeling Analysis, Daniel C. Laughlin, Scott R. Abella, W. Wallace Covington, James B. Grace
Species Richness And Soil Properties In Pinus Ponderosa Forests: A Structural Equation Modeling Analysis, Daniel C. Laughlin, Scott R. Abella, W. Wallace Covington, James B. Grace
Public Policy and Leadership Faculty Publications
Question: How are the effects of mineral soil properties on understory plant species richness propagated through a network of processes involving the forest overstory, soil organic matter, soil nitrogen, and understory plant abundance? Location: North-central Arizona, USA. Methods: We sampled 75 0.05-ha plots across a broad soil gradient in a Pinus ponderosa (ponderosa pine) forest ecosystem. We evaluated multivariate models of plant species richness using structural equation modeling. Results: Richness was highest at intermediate levels of understory plant cover, suggesting that both colonization success and competitive exclusion can limit richness in this system. We did not detect a reciprocal positive …