Open Access. Powered by Scholars. Published by Universities.®
Ecology and Evolutionary Biology Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (702)
- Utah State University (421)
- University of Nevada, Las Vegas (112)
- Claremont Colleges (103)
- Department of Primary Industries and Regional Development, Western Australia (72)
-
- Old Dominion University (62)
- University of Arkansas, Fayetteville (55)
- Michigan Technological University (50)
- University of Kentucky (43)
- South Dakota State University (42)
- Technological University Dublin (31)
- Bucknell University (28)
- University of Louisville (28)
- Eastern Illinois University (22)
- Virginia Commonwealth University (22)
- Brigham Young University (20)
- California Polytechnic State University, San Luis Obispo (19)
- City University of New York (CUNY) (19)
- WellBeing International (19)
- Chapman University (18)
- University of Connecticut (18)
- Cal Poly Humboldt (17)
- University of Dar es Salaam (17)
- Marshall University (16)
- SIT Graduate Institute/SIT Study Abroad (16)
- Indiana State University (15)
- Illinois State University (14)
- Butler University (13)
- Portland State University (13)
- Wilfrid Laurier University (11)
- Keyword
-
- Climate change (59)
- Invasive species (55)
- Ecology (49)
- Aspen (46)
- Biodiversity (42)
-
- Populus tremuloides (41)
- Western Australia (40)
- Conservation (35)
- Restoration (33)
- Vegetation (32)
- Botany (27)
- Plants (26)
- Phylogeny (24)
- Poaceae (23)
- Invasive plants (21)
- Biological Sciences (20)
- Herbivory (20)
- Nebraska (20)
- Remote sensing (20)
- Wetlands (20)
- Climate (19)
- Evolution (19)
- Plant ecology (19)
- Restoration ecology (19)
- Taxonomy (19)
- Competition (18)
- Disturbance (18)
- Drought (17)
- Germination (17)
- North Dakota (17)
- Publication Year
- Publication
-
- The Prairie Naturalist (481)
- Aspen Bibliography (336)
- Aliso: A Journal of Systematic and Floristic Botany (93)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (55)
- West Central Research and Extension Center, North Platte (52)
-
- Journal of the Department of Agriculture, Western Australia, Series 4 (41)
- Theses and Dissertations (39)
- Biological Sciences Theses & Dissertations (36)
- Electronic Theses and Dissertations (35)
- Journal of the Arkansas Academy of Science (35)
- SURE Journal: Science Undergraduate Research Experience Journal (31)
- Faculty Journal Articles (25)
- School of Biological Sciences: Faculty Publications (23)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (23)
- Biology Faculty Publications (22)
- Masters Theses (22)
- Biological Sciences Faculty Publications (20)
- Animal Sentience (19)
- Bryophyte Ecology Volume 2: Bryological Interaction (19)
- Estudios en Biodiversidad (19)
- Master's Theses (19)
- Native Plant Focused Publications (17)
- Tanzania Journal of Science (17)
- 2023 Midwest Ecology & Evolution Conference (16)
- Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298 (16)
- Independent Study Project (ISP) Collection (16)
- Mojave Applied Ecology Notes (16)
- Transactions of the Nebraska Academy of Sciences and Affiliated Societies (16)
- All-Inclusive List of Electronic Theses and Dissertations (15)
- Biology, Chemistry, and Environmental Sciences Faculty Articles and Research (15)
- Publication Type
- File Type
Articles 1981 - 2010 of 2464
Full-Text Articles in Ecology and Evolutionary Biology
Perceived Fairness And Effectiveness Of Rangeland Collaborative Processes, Kimberly J. Richardson
Perceived Fairness And Effectiveness Of Rangeland Collaborative Processes, Kimberly J. Richardson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Involvement in collaborative partnerships in natural resource management has become a popular method for natural resource management agencies to collect public input, cope with conflicts, and develop ecosystem management plans. This thesis evaluates various collaborative processes, emphasizing multiple-owner partnerships. Qualitative interviews of 46 landowners in Utah were conducted to reveal concerns and suggestions regarding multiple-owner landscape-level collaborative partnerships. Landowners were concerned about private property rights infringement and losing control of their private land. Landowners were primarily concerned about the fairness and effectiveness of any partnership in which they were involved.
However, they were willing to consider participating if certain procedural …
Studies On The Biology Of Striga Aspera (Scrophulariaceae) In Nigeria, Emmanuel Izaka Aigbokhan
Studies On The Biology Of Striga Aspera (Scrophulariaceae) In Nigeria, Emmanuel Izaka Aigbokhan
Biological Sciences Theses & Dissertations
Studies on Striga aspera are few and little information exists on its relationship with the morphologically similar and much studied S. hermonthica. Both species are sympatric in West Africa and if they hybridize, may serve as virulent gene reservoirs for each other.
The primary focus of this study was on the biology of S. aspera in Nigeria. The research focussed on its distribution, phenology, cytology, hybridization, seed dormancy, viability and germination in relation to S. hermonthica. Related studies involving the hybrids include genetic and morphological variability, pathogenicity and the simultaneous dual infection of a maize plant by both species.
In …
The Prairie Naturalist Volume 30, No.1 March 1998
The Prairie Naturalist Volume 30, No.1 March 1998
The Prairie Naturalist
WATERFOWL FOODS OF CULTIVATED WILD RICE PADDIES IN NORTHWEST MINNESOTA ▪ J. T. Huseby, W. Po Cymbaluk, A. J. Melvie, W. D. Svedarsky, and R. D. Crawford
ICHTHYOFAUNA IN STREAMS OF THE MISSOURI RIVER DRAINAGE, WYOMING ▪ T. M. Patton, W. A. Hubert, and F. J. Rahel
Aphthona nigriscutis LARVAL DENSITIES IN CAMPBELL COUNTY, SOUTH DAKOTA ▪ M. A. Brinkman and S. A. Clay
DIETS OF BISON SOCIAL GROUPS ON TALLGRASS PRAIRIE IN OKLAHOMA ▪ B. R. Coppedge and J. H. Shaw
NUTRIENT AND ENERGETIC CHARACTERISTICS OF GRASSHOPPERS OF DIFFERENT LIFE STAGES ▪ R. J. Robel, C. A. Desjardins, and …
Bowen Ratio Estimates Of Evapotranspiration For Stands On The Virgin River In Southern Nevada, Dale A. Devitt, A. Sala, S. D. Smith, J. Cleverly, L. K. Shaulis, R. Hammett
Bowen Ratio Estimates Of Evapotranspiration For Stands On The Virgin River In Southern Nevada, Dale A. Devitt, A. Sala, S. D. Smith, J. Cleverly, L. K. Shaulis, R. Hammett
Life Sciences Faculty Research
A Bowen ratio energy balance was conducted over a Tamarix ramosissima (saltcedar) stand growing in a riparian corridor along the Virgin River in southern Nevada. Measurements in two separate years were compared and contrasted on the basis of changes in growing conditions. In 1994, a drought year, record high temperatures, dry winds, and a falling water table caused partial wilt of outer smaller twigs in the canopy of many trees in the stand around the Bowen tower. Subsequently, evapotranspiration (ET) estimates declined dramatically over a 60‐day period (11 mm d−1 tod−1). In 1995, the Virgin River at the Bowen tower …
Management Of Red Squirrel Feeding Damage To Lodgepole Pine By Stand Density Manipulation And Diversionary Food, Thomas P. Sullivan
Management Of Red Squirrel Feeding Damage To Lodgepole Pine By Stand Density Manipulation And Diversionary Food, Thomas P. Sullivan
Vertebrate Pest Conference Proceedings: 18th (1998)
The red squirrel (Tamiasciurus hudsonicus) feeds on the vascular tissues of sapling lodgepole pine (Pinus contorta) during spring periods in forests of interior British Columbia and Alberta, Canada. This damage may lead to mortality and reduced growth of crop trees in managed stands. Manipulation of stand density by pre-commercial thinning to densities < 1,000 stems/ha is an effective method to lower squirrel populations and feeding damage. Lowering stand density enhances the growth of crop trees, and understory herbs and shrubs as wildlife habitat, while protecting trees from squirrel feeding. This approach has been successful in several forest ecological zones. An alternative management tool is provision of diversionary food (sunflower seed) for those stands susceptible to feeding damage, and where stand thinning has already been completed. Diversionary food can be applied aerially and is very cost effective for protecting managed stands. These techniques may be used to maintain or even enhance species diversity of small mammal communities in those forest stands requiring protection.
An Inventory And Condition Survey Of The Sandstone-Yalgoo-Paynes Find Area, Western Australia, A L. Payne, A M E Van Vreeswyk, K A. Leighton, H J. Pringle, P Hennig
An Inventory And Condition Survey Of The Sandstone-Yalgoo-Paynes Find Area, Western Australia, A L. Payne, A M E Van Vreeswyk, K A. Leighton, H J. Pringle, P Hennig
Technical Bulletins
The inventory and condition survey of the Sandstone-Yalgoo-Paynes Find area, undertaken by the Department of Agriculture and Food, Western Australia (DAFWA) between 1992 and 1993, describes and maps the natural resources of the region’s pastoral leasehold land. This survey report provides a baseline record of the existence and condition of the area’s natural resources, to assist with the planning and implementation of land management practices. The report identified and described the condition of soils, landforms, vegetation, habitat, ecosystems, and declared plants and animals. It also assessed the impact of pastoralism and made land management recommendations. The area surveyed covers about …
Demographic Viability Of Populations Of Silene Regis In Midwestern Prairies: Relationships With Fire Management, Genetic Variation, Geographic Location, Population Size And Isolation, Eric S. Menges, Rebecca W. Dolan
Demographic Viability Of Populations Of Silene Regis In Midwestern Prairies: Relationships With Fire Management, Genetic Variation, Geographic Location, Population Size And Isolation, Eric S. Menges, Rebecca W. Dolan
Scholarship and Professional Work - LAS
-
We studied the demographic viability of populations of a long-lived iteroparous prairie perennial, Silene regia, in relation to management regimes, population sizes, geographical region (Ohio and Indiana vs. Missouri and Arkansas), degree of isolation and amount of genetic variation. Demographic data were collected from 16 populations for up to 7 years.
-
This species has high survivorship, slow growth, frequent flowering and episodic seedling recruitment. Matrix projection methods were used to summarize population performance with and without recruitment. Median finite rates of increase by population varied from 0.57 to 1.82 and from 0.44 to 0.99, respectively.
-
Populations with the highest rates …
Population Biology Of Intraspecific Polyploidy In Grasses, Kathleen H. Keeler
Population Biology Of Intraspecific Polyploidy In Grasses, Kathleen H. Keeler
School of Biological Sciences: Faculty Publications
Polyploidy is the duplication of an entire nuclear genome, whether diploid or higher level (Stebbins, 1971; Thompson and Lumaret, 1992) and a frequent occurrence in plants. Stebbins (1971) estimated that 30-35% of flowering plant species are polyploid, and that many more had a polyploid event in their evolutionary history, including all members of such important families as the Magnoliaceae, Salicaceae, and Ericaceae. Goldblatt (1980) estimated 55%, but probably up to 75%, of monocotyledons had at least one polyploid event in their history, using the criterion that if the species has a base number higher than n = 13 it is …
The Prairie Naturalist Volume 29, No.4. December 1997
The Prairie Naturalist Volume 29, No.4. December 1997
The Prairie Naturalist
BUTTERFLY SPECIES IN NATIVE PRAIRIE AND RESTORED PRAIRIE ▪ D. M. Debinski and A. M. Babbit
BACK-CALCULATED LENGTH-AT-AGE ESTIMATES FROM TWO SCALE RADII ▪ K. L. Hurley, K. L. Pope, and D. W. Willis
DIET OF NORTH DAKOTA ELK DETERMINED FROM RUMEN AND FECAL ANALYSES ▪ R. G. Osborn, J. A. Jenks, and W. F. Jensen
INTERSPECIFIC COMPETITION FOR FOOD BETWEEN WHITE-FOOTED MICE AND EASTERN WOODRATS ▪ B. G. Aloiau, D. M. Post, and E. A. Home
NESTING PIPING PLOVER AND LEAST TERN ON THE KANSAS RIVER ▪ W. H. Busby, D. W. Mulhern, P. G. Kramos, and D. A. …
The Prairie Naturalist Volume 29, No.3. September 1997
The Prairie Naturalist Volume 29, No.3. September 1997
The Prairie Naturalist
FISHING STATISTICS IN KANSAS PUT-AND-TAKE RAINBOW TROUT FISHERIES ▪ R. D. Schultz and D. D. Nygren
DISTRIBUTIONAL STATUS Of UNCOMMON FISHES AND AN AMPHIBIAN FROM NORTHEASTERN MISSOURI ▪ R. A. Hrabik,
DIET OF A RELICT POPULATION OF THE EASTERN WOODRAT IN NEBRASKA ▪ H. H. Genoways, P. W Freeman, and M. K. Clausen
ANIMAL SPECIES MONITORED BY THE SOUTH DAKOTA NATURAL HERITAGE PROGRAM ▪ E. D. Stukel and D. C. Backlund
Dedication
Announcements
The Prairie Naturalist Volume 29, No.2. June 1997
The Prairie Naturalist Volume 29, No.2. June 1997
The Prairie Naturalist
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA - 1996 ▪ . R. N. Randall
BREEDING BIRD RICHNESS IN THE PRAIRIE POTHOLE REGION OF MINNESOTA ▪ . S. L. Niesar and D. E. Hubbard
UNUSUAL MIGRATION BY A WHITE-TAILED DEER FAWN IN SOUTH DAKOTA ▪ C. S. DePerno, S. L. Griffin, J. A. Jenks, and L. A. Rice
COYOTE FOOD HABITS AT DESOTO NATIONAL WILDLIFE REFUGE, NEBRASKA ▪ J. J. Huebschman, S. E. Hygnstrom, and J. A. Gubanyi
WHITE BASS GROWTH IN SOUTH DAKOTA WATERS ▪ D. W. Willis, H. D. Beck, C. A. Soupir, B. A. Johnson, G. D. Simpson, and …
Identification Of Belowground Woody Structures Using Molecular Biomarkers, Benny R. Bobowski
Identification Of Belowground Woody Structures Using Molecular Biomarkers, Benny R. Bobowski
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Within the last two decades substantial progress has been made in understanding seed bank dynamics and the contribution of the soil seed bank to a post-disturbance plant community. There has been relatively little progress, however, in understanding perennial bud bank dynamics and the contribution of the soil bud bank to secondary succession. This lack of information is due primarily to the inability to reliably identify roots, rhizomes, and lignotubers that lie dormant beneath the soil surface. This scientific investigation, therefore, addressed the issue of identification of belowground woody structures.
The first objective was to develop a methodology that utilizes molecular …
The Prairie Naturalist Volume 29, No.1. March 1997
The Prairie Naturalist Volume 29, No.1. March 1997
The Prairie Naturalist
UPDATED DISTRIBUTION OF THE LEAST WEASEL ON THE CENTRAL GREAT PLAINS ▪ S. R. Hoofer and J. R. Choate
ESTIMATING SURVIVAL OF SONG BIRD CARCASSES IN CROPS AND WOODLOTS ▪ G. M. Linz, D. L. Bergman, and W. J. Bleier
SEXUAL ALLOCATION IN Carex stricta, A MONOECIOUS, TUSSOCK-FORMING SEDGE ▪ D. M. Estrella and C. E. Umbanhowar, Jr.
ABUNDANCE OF THIRTEEN-LINED GROUND SQUIRRELS IN SHORTGRASS PRAIRIE ▪ L. C. Higgins and P. Stapp
BATS OF JEWEL CAVE NATIONAL MONUMENT, SOUTH DAKOTA ▪ J. R. Choate and J. M. Anderson
NOTES
Northern Harrier Builds Nest On Top Of Depredated Mallard …
Floristic Investigation Of Crooked Creek Community Of Juan Solomon Park, Indianapolis Indiana, Raelene M. Crandall, Rebecca W. Dolan
Floristic Investigation Of Crooked Creek Community Of Juan Solomon Park, Indianapolis Indiana, Raelene M. Crandall, Rebecca W. Dolan
Scholarship and Professional Work - LAS
The protection of plant resources in urban areas is a growing conservation concern. Inventory activities that document species presence and stewardship plans that protect and enhance these areas are needed. The results of a botanical inventory of the Crooked Creek Community Juan Solomon Park in Indianapolis, Indiana, are reported in this paper. The 46-acre park contains three distinct habitats, supporting a wide variety of plants. One hundred seventy-nine vascular plant species from 64 families were identified, including 53 (29.6%) non-native species that are naturalizing within the park. Despite its high percentage of alien species and urban setting, the park is …
Parade Of Presidents, John L. Artz
Twenty-Five Year Index To The Prairie Naturalist, Volumes 1-25, 1968-1993, Paul B. Kannowski
Twenty-Five Year Index To The Prairie Naturalist, Volumes 1-25, 1968-1993, Paul B. Kannowski
The Prairie Naturalist
Forward
Author Index
1.Articles and Notes
2. Book Reviews
3. Editorials
Subject Index
Geographic Index
Taxonomic Index
Plants
Animals
Other Records
A Study Of The Lichens At Rocky Branch Nature Preserve, Clark County, Illinois, Eric B. Grunder
A Study Of The Lichens At Rocky Branch Nature Preserve, Clark County, Illinois, Eric B. Grunder
Masters Theses
In 1971, a graduate student at Eastern Illinois University, James E. Wiedman, studied the lichen flora of Rocky Branch Nature Preserve, Clark County, Illinois. During his study he collected, identified, and recorded a total of 64 lichen species. Since 1971, Rocky Branch Nature Preserve has experienced a dramatic increase in use by people and a concomittant decline in the quality of lichen habitats. In order to assess the decline of suitable lichen habitats and the reduction of lichen species a second study of the lichens at Rocky Branch Nature Preserve was undertaken. As part of this study, ten habitat sites …
Influence Of A Mycorrhizal Fungus And/Or Rhizobium On Growth And Biomass Partitioning Of Subterranean Clover Exposed To Ozone, Joseph E. Miller, Steven R. Shafer, Michele M. Schoeneberger, Walter A. Pursley, Stephanie J. Horton, Charles B. Davy
Influence Of A Mycorrhizal Fungus And/Or Rhizobium On Growth And Biomass Partitioning Of Subterranean Clover Exposed To Ozone, Joseph E. Miller, Steven R. Shafer, Michele M. Schoeneberger, Walter A. Pursley, Stephanie J. Horton, Charles B. Davy
United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications
The influence of soilborne symbionts such as rhizobia or mycorrhizal fungi on plant response to ozone (O3) has not been well defined. Leguminous plants in the field are infected by both types of organisms, which influence plant nutrition and growth. We studied the effects of infection with Rhizobium leguminosarum biovar trifolii and/or Gigaspora margarita on response of subterranean clover (Trifolium subterraneum L. cv Mt. Barker) to O3. Exposures were conducted in greenhouse CSTR chambers using four O3 concentrations [charcoal-filtered (CF), 50, 100, or 150 ppb; 6 h day-1, 5 day wk-1 …
The Prairie Naturalist Volume 28, No. 4. December 1996
The Prairie Naturalist Volume 28, No. 4. December 1996
The Prairie Naturalist
IMPLANTED MICROCHIPS USED TO INDIVIDUALLY IDENTIFY BLACK-FOOTED FERRETS IN MONTANA ▪ R. Stoneberg
GRAY WOLF STATUS IN NORTH DAKOTA ▪ D. S Licht and L. E. Huffman
VARIATION IN SELECTION OF MICROHABITATS BY MERRIAM'S TURKEY BROOD HENS ▪ M. A. Rumble and S. H. Anderson
SURVIVAL AND REPRODUCTIVE CHRONOLOGY OF FEMALE RING-NECKED PHEASANTS IN SOUTH DAKOTA ▪ A. P. Leif
EFFECTS OF LOGGING SLASH ON ASPEN REGENERATION IN GRAZED CLEARCUTS ▪ M. A. Rumble, T. Pella, J. C. Sharps. A. V. Carter, and J. B. Parrish
BOOK REVIEWS
The Poetry of Ecoregions ▪ J. Pastor
Saving Texas' Rare Ones ▪ …
The Evaluation Of Two Types Of Multivariate Analyses Applied To Grassland Vegetation Data From A Reclaimed Coal Mine Area In Southeast Kansas, Usa, Karen Frances Yates
The Evaluation Of Two Types Of Multivariate Analyses Applied To Grassland Vegetation Data From A Reclaimed Coal Mine Area In Southeast Kansas, Usa, Karen Frances Yates
Electronic Theses & Dissertations
This study presents an analysis of the use of classification and ordination techniques for the detection of sub-communities at a reclaimed coal refuse dump and strip minded area in southeast Kansas. Cover values for 58 grass, forb, and woody species were estimated in 103 systematically positioned plots across the reclamation grassland using the modified Daubenmeyer cover scale. The data were submitted to an array of default and variant classification and ordination analysis programs in order to assess their ability to detect sub-communities. The classifications obtained from the analyses were mapped and analyzed for differences in species composition, diversity, and spatial …
The Prairie Naturalist Volume 28, No. 3. September 1996
The Prairie Naturalist Volume 28, No. 3. September 1996
The Prairie Naturalist
REPRODUCTIVE SUCCESS OF GRASSHOPPER SPARROWS IN RELATION TO EDGE ▪ J. M Delisle, and J. A. Savidge
OBSERVATIONS ON BATS AT BADLANDS NATIONAL PARK, SOUTH DAKOTA ▪ M A. Bogan, J. G. Osborne, and J. A. Clarke
DIETS OF FEMALE WHITE-TAILED DEER IN THE CROSS-TIMBERS REGION ▪ F. C. Bryant, G. Van Vreede, T. J. Deliberto, and K. L. Gee
NOTES
Second Record of White Ibis in North Dakota ▪ J. W. Marlow, L. D. Igl, and M. R. Hartman
A Recent Record of Mountain Lion in Nebraska ▪ H. H. Genoways and P. W. Freeman
Prairie Falcon Predation on …
Twig, Branch, And Stem Diseases Of Pine, John R. Hartman
Twig, Branch, And Stem Diseases Of Pine, John R. Hartman
Agriculture and Natural Resources Publications
Tip Blight
Tip blight, caused by the fungus Sphaeropsis sapinea (formerly Diplodia pinea), is a serious disease of mature Austrian, Scots (Scotch), and Mugo pines in Kentucky. In the landscape, tip blight is normally not observed until pines reach about 12 years old and begin to bear cones. Severe infections year after year can greatly weaken and eventually kill affected pines.
The Prairie Naturalist Volume 28, No. 2. June 1996
The Prairie Naturalist Volume 28, No. 2. June 1996
The Prairie Naturalist
RAPTOR NESTING CHRONOLOGY IN NORTHWESTERN NORTH DAKOTA ▪ R. K. Murphy, and J. T. Ensign
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA -1995 ▪ R. N. Randall
YELLOW PERCH SPAWNING HABITATS IN PICKEREL LAKE, SOUTH DAKOTA ▪ S. J. Fisher, K. L Pope, L. J. Templeton, and D. W. Willis
ECOLOGY OF BOTRYCHIUM CAMPESTRE ON NORTHEASTERN lOWA GLADES ▪ J. C. Nekola, and D. W. Schlicht
REPRODUCTIVE BIOLOGY OF PURPLE CONEFLOWER IN SOUTHWESTERN NORTH DAKOTA ▪ H. K. Leuszler, V J. Tepedino, and D. G. Alston
BOOK REVIEWS
A Unique Group of Birds ▪ J. H. Schulz
Forest Ecology ▪ S. …
Ecological Amplitude And Invasion Of Diffuse Knapweed At Yakima Training Center, Washington, Donna Denise Wilcox
Ecological Amplitude And Invasion Of Diffuse Knapweed At Yakima Training Center, Washington, Donna Denise Wilcox
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Diffuse knapweed (Centaurea diffusa) is an introduced annual or short-lived perennial from Eurasia that has become a threat to native rangelands in the Pacific Northwest. Military training activities on the Yakima Training Center (YTC) increase the likelihood that knapweed will expand its range at YTC. This study, conducted in a major watershed at YTC, focused on: 1) how a variety of environmental variables influences knapweed distribution, 2) the use of Landsat Thematic Mapper (TM) imagery to map existing knapweed populations, and 3) the use of a logistic regression model and geographical information systems (GIS) to create a potential …
Livestock As Seed Disseminators For Reseeding Degraded Rangelands: The Role Of Dung In Gap Formation And Plant Establishment, Brian S. Auman
Livestock As Seed Disseminators For Reseeding Degraded Rangelands: The Role Of Dung In Gap Formation And Plant Establishment, Brian S. Auman
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Livestock (cattle and sheep) were examined as seed disseminators for reseeding degraded Intermountain rangelands. "Hycrest" crested wheatgrass [Agropyron desertorum (Fisch. ex Link) Schult. X A. cristatum (L.) Gaert.] seed was fed to yearling Holstein steers and Suffolk ewes. Dung was collected from each animal type and deposited on plots of high and low densities of an annual [cheatgrass (Bromus tectorum L.)] and perennial [squirreltail (Sitanion hystrix Nutt.)] grass species. The experiment evaluated the ability of the dung to suppress the resident vegetation, and the recruitment and establishment of Hycrest seedlings emerging from the dung.
Sheep dung had …
The Effect Of Salinity Level Upon The Yield, Root Growth, And Water Extraction Of Contrasting Rooting Subpopulations Of Alfalfa (Medicago Sativa) Under Conditions Of Zero Leaching, Laura A. Vincent
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A major problem in irrigated agriculture in the Western U.S. is the gradual accumulation of salinity in the plant root zone. These nonuniformly saline soils contain increasing amounts of salinity with depth, and salt accumulation is accelerated in situations where leaching is minimized. Root growth and thus plant yield is limited in these soils due to decreased water uptake. We studied the root growth of two subpopulations of alfalfa differing in their ability to produce fibrous roots to determine if altering root morphology would increase plant yield and water extraction, in an irrigated saline soil.
Soil profiles for a control …
Comparison Of Sapling Community Structure In Created And Natural Forested Wetlands In Southeastern Virginia, Sharon Ann Haines
Comparison Of Sapling Community Structure In Created And Natural Forested Wetlands In Southeastern Virginia, Sharon Ann Haines
Biological Sciences Theses & Dissertations
Forested wetlands are being destroyed at a rapid rate. Wetlands are valuable for flood control, aquifer recharge, and for their role in denitrification and storage of global carbon. When wetlands are lost, their functions and value to humans are lost as well. One response to the continued development of wetlands has been the artificial creation of new wetlands. This study compared the species density, relative density, coverage and frequency of occurrence of the woody vegetation in two southeastern Virginia created wetlands with that in two reference wetlands, also in southeastern Virginia, to determine the structural similarity of their respective communities. …
The Prairie Naturalist Volume 28, No. 1. March 1996
The Prairie Naturalist Volume 28, No. 1. March 1996
The Prairie Naturalist
SUMMER AVIAN ABUNDANCE, INVERTEBRATE BIOMASS, AND FORBS IN KANSAS CRP ▪ S. D. Hull, R.J. Robel, and K. E. Kemp
SUPPRESSION OF SMOOTH BROME BY ATRAZINE, MOWING, AND FIRE ▪ G. D. Willson, and J. Stubbendieck
NOTES
Continued Westward Dispersal of the Woodchuck in Kansas ▪ G. M. Wilson and J. R. Choate
Intraspecific Aggression Between GadwalIs Results in Mortality ▪ D. E. Naugle, K. F. Higgins and M. S. Wilsdon
Western Meadowlark Impaled on Barbed-wire Fence ▪ L. D. Igl
Cyperaceae in Dodge County Nebraska: New Records ▪ S. J. Rothenberger
BOOK REVIEWS
Native Habitats of the Twin Cities …
A Lighter Shade Of Green: Reproducing Nature In Central Florida, Kevin Archer
A Lighter Shade Of Green: Reproducing Nature In Central Florida, Kevin Archer
All Faculty Scholarship for the School of Graduate Studies and Research
No abstract provided.
Evapotranspiration From A Saltcedar-Dominated Desert Floodplain: A Scaling Approach, S. D. Smith, A. M. Sala, Dale A. Devitt
Evapotranspiration From A Saltcedar-Dominated Desert Floodplain: A Scaling Approach, S. D. Smith, A. M. Sala, Dale A. Devitt
Life Sciences Faculty Research
The purpose of this study was to investigate evapotranspiration (ET) from a variety of scales (leaf to landscape) in saltcedar-dominated floodplain vegetation along the lower Virgin River of southern Nevada. Leaf-level gas exchange indicated that saltcedar exhibits similar stomatal conductance as the sympatric phreatophytes arrowweed, mesquite, and willow. However, sap flow in saltcedar was higher per unit sapwood area than the other species, suggesting that it maintains higher leaf area per unit sapwood area. At the stand level, saltcedar ET was found to exceed potential ET early in the summer when soils were moist and the water table was near …