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Articles 1021 - 1050 of 1103
Full-Text Articles in Entire DC Network
The Prairie Naturalist Vol. 10, No. 2. June 1978
The Prairie Naturalist Vol. 10, No. 2. June 1978
The Prairie Naturalist
ANALYSIS OF THE FLEHMEN DISPLAY IN AMERICAN BISON (BISON BISON) ▪ B. R. Mahan, M. P. Munger and H. L. Gunderson
AVIAN MORTALITY CAUSED BY A SEPTEMBER WIND AND. HAIL STORM ▪ K. F. Higgins and M. A. Johnson
DISTRIBUTION OF TWO SPECIES OF LONG-EARED BATS OF THE GENUS MYOTIS ON THE NORTHERN GREAT PLAINS ▪ J. K. Jones, Jr. and J. R. Choate
ALFALFA AND THE OCCURRENCE OF FISSURES ON THE NORTH DAKOTA PRAIRIES ▪ J. P. Bluemle, A. E Kehew, E. A. Brostuen and K. L. Harris
NOTES
An Observation of Badger Predation on Richardson Ground Squirrels ▪ …
The Role Of Vegetation Architecture In Determining Spider Community Organization, Cynthia L. Hatley
The Role Of Vegetation Architecture In Determining Spider Community Organization, Cynthia L. Hatley
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The relationships between vegetation architecture and spider community attributes were examined in a big sage (Artemisia tridentata) community. Spiders were separated into guilds using similarities of species' hunting behavior. Shrub architecture was experimentally manipulated in the field by either clipping 50% of a shrub's foliage to decrease foliage density or tying together a shrub's branches to increase foliage density.
Temporal patterns of spider species density, diversity (H') and evenness (J') showed midsummer peaks in both 1974 and 1975. Seasonal spider guild trends reflected the temporal prominence of a member species or genus. These temporally abundant species appeared to …
Comparison Of Microbial Activity In Desert Soils Of The Western United States, Patricia Ann Trujillo Y Fulgham
Comparison Of Microbial Activity In Desert Soils Of The Western United States, Patricia Ann Trujillo Y Fulgham
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Soils from four regional deserts, Great Basin, Sonoran, Chihuahuan, and Mojave, were collected at times throughout the year which would best exhibit microbial response to moisture or vegetation. The soils were analyzed for several chemical and physical properties. Biological and biochemical characteristics, namely respiration, dehydrogenase activity, adenosine triphosphate concentration, proteolytic activity, nitrification potential, and microbial numbers, were measured.
The soils exhibited fluctuations in microbial activity as measured by respiration, dehydrogenase activity, adenosine triphosphate concentration, proteolytic activity, and nitrification potential during different moisture seasons.
Increase in soil moisture as modified by precipitation did not cause a significant difference in respiration or …
Herbaceous Production In Burned-Cut Burned-Uncut And Control Areas Of A Chamaecyparis Thyoides (L.) Bsp (Cupressaceae) Stand In The Great Dismal Swamp, Caroline Elisabeth Mckinley
Herbaceous Production In Burned-Cut Burned-Uncut And Control Areas Of A Chamaecyparis Thyoides (L.) Bsp (Cupressaceae) Stand In The Great Dismal Swamp, Caroline Elisabeth Mckinley
Biological Sciences Theses & Dissertations
The herbaceous layer of an Atlantic white cedar (Chamaecyparis thyoides) stand in the Great Dismal Swamp was sampled to estimate the productivity of two burned areas and a control area. The herbaceous vegetation was sampled along three transects utilizing the harvest method and productivity values were estimated using peak biomass values for each individual species. The burned-cut area had the highest productivity (3623 kg ha-l yr-1) and was characterized by species of the Asteraceae, Poaceae, and Cyperaceae. The burned-uncut area had a productivity value of 1636 kg ha-1 yr-1 with similar species of the Asteraceae …
The Prairie Naturalist Vol. 10. No. 1 March. 1978
The Prairie Naturalist Vol. 10. No. 1 March. 1978
The Prairie Naturalist
KEY TO THE SKULLS OF NORTH DAKOTA MAMMALS ▪ J. M. Wiebe
RESPONSES OF PRAIRIE GROUSE TO AVIAN AND MAMMALIAN VISITORS ON DISPLAY GROUNDS IN NORTHWESTERN MINNESOTA ▪ D. W. Sparling, Jr. and W. D. Svedarsky
FIRST NESTING RECORD OF THE CASPIAN TERN IN NORTH DAKOTA ▪ J. F. Herman, R. A. Schmidt and K. J. Wilson
MARSH HAWK PREDATION ON BLACK TERN AND PECTORAL SANDPIPER ▪ G. D. Maxson
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1977 ▪ R. N. Randall
BOOK REVIEW
Audubon Society "Field Guides" ▪ D. L. Kubischta
An Ecological Study Of A Natural Population Of Tribolium Brevicornis Le Conte (Coleoptera, Tenebrionidae), Gary D. Mulder
An Ecological Study Of A Natural Population Of Tribolium Brevicornis Le Conte (Coleoptera, Tenebrionidae), Gary D. Mulder
Theses Digitization Project
No abstract provided.
Relating Wolf Scat Content To Prey Consumed, Theodore J. Floyd, L. David Mech, Peter A. Jordan
Relating Wolf Scat Content To Prey Consumed, Theodore J. Floyd, L. David Mech, Peter A. Jordan
United States Geological Survey, Northern Prairie Wildlife Research Center: Publications
In 9 trials, captive wolves (Canis lupus) were fed prey varying in size from snowshoe (Lepus americanus) to adult deer (Odocoileus virginianus), and the resulting scats were counted. collectible scats were distinguished from liquid, noncollectible stools. In collectible scats, the small prey occurred in greater proportion relative to the prey's weight, and in lesser proportion to the prey's numbers, than did the remains of larger prey. A regression equation with an excellent the data (r2 = 0.97) was derived to estimate the weight of prey eaten per collectible scat for With this information …
Ten-Year Index To The Prairie Naturalist Vols. 1-10 (1968-1978), Virginia Steinhaus
Ten-Year Index To The Prairie Naturalist Vols. 1-10 (1968-1978), Virginia Steinhaus
The Prairie Naturalist
11 pages
From: ACANTHOMYOPS CLAVIGER,
to: Zink, R.M.,
The Prairie Naturalist Vol. 9, Nos. 3 And 4. September-December, 1977
The Prairie Naturalist Vol. 9, Nos. 3 And 4. September-December, 1977
The Prairie Naturalist
UPLAND NESTING OF AMERICAN BITTERNS, MARSH HAWKS, AND SHORT-EARED OWLS ▪ H. F. Duebbert and J. T. Lokemoen
ROADSIDE NESTING BY PRAIRIE GROUSE IN NORTHWEST MINNESOTA ▪ W. D. Svedarsky
BOHEMIAN WAXWING POPULATIONS AND WINTER ECOLOGY IN NORTH DAKOTA ▪ E. L. Bakke
AGEING ARCHAEOLOGICAL BISON BY DENTAL ANNULI ▪ J. C. Pigage and M. G. McKenna
COMPARISON OF COYOTE AND COYOTE X DOG HYBRID FOOD HABITS IN SOUTHEASTERN NEBRASKA ▪ B.R. Mahan
NOTES
Abnormal Mid-May Occurrence of White-fronted Geese in Sheridan County, North Dakota ▪ D.P. Kibbe and J. A. Roppe
Common Grackle Preys on Spotted Sandpiper Chick ▪ …
Bird Populations In A Grassland-Thicket In Relation To Plant Succession And Adjacent Land Use, Steven L. Harbron
Bird Populations In A Grassland-Thicket In Relation To Plant Succession And Adjacent Land Use, Steven L. Harbron
Masters Theses
No abstract provided.
The Prairie Naturalist Volume 9, No. 2. June 1977
The Prairie Naturalist Volume 9, No. 2. June 1977
The Prairie Naturalist
PROPAGULE DISPERSAL AMONG FOREST ISLANDS IN SOUTHEASTERN SOUTH DAKOTA ▪ J. W. Ranney and W. C. Johnson
GENERAL WEATHER CONSIDERATIONS FOR THE PRESCRIDED BURNING OF PRAIRIE IN NORTHWEST MINNESOTA ▪ W. D. Svedarsky and R. W. Sands
YELLOW-CROWNED NIGHT HERONS SIGHTED IN NORTH DAKOTA ▪ D. G. Jorde, G. L. Krapu, and R. K. Green
The Prairie Naturalist Volume 9, No. 1. March 1977
The Prairie Naturalist Volume 9, No. 1. March 1977
The Prairie Naturalist
NESTING BY FERRUGINOUS HAWKS AND OTHER RAPTORS ON HIGH VOLTAGE POWERLINE TOWERS ▪ D. S. Gilmer and J. M. Wiebe
ARTHROPODS CONSUMED BY AN IMMATURE MARBLED GODWIT ▪ R. M. Timm and R. M. Zink
NOTES
Black-headed Grosbeak in Jamestown, North Dakota ▪ R. Lender
Summer Record of Red-breasted Nuthatch in North Dakota ▪ R. Lender
BOOK REVIEWS
Minnesota's Wild Flowers ▪ Staff
In Search of Eagles ▪ J. Lokemoen
Forest and Range Research ▪ Staff
An Economic Analysis of Recycling ▪ Staff
A Stream Survey Of Riley Creek, Coles County, Illinois, Using Macroinvertebrates As Indicators Of Organic Pollution, Joseph R. Rowe
A Stream Survey Of Riley Creek, Coles County, Illinois, Using Macroinvertebrates As Indicators Of Organic Pollution, Joseph R. Rowe
Masters Theses
A stream survey of Riley Creek in Coles County Illinois, was undertaken to determine ecological trends and the qualitative status of the aquatic community throughout the course of the stream.
The survey encompassed the entire length of Riley Creek from the area of its status as an intermittant waterway to its confluence with Cassel Creek. Sampling periods included the months of April, May, June, July, October and November.
Macroinvertebrate collections were made at six locations along the stream approximately equidistant from each other. The organisms were assigned tolerance levels as designated by the Illinois Environmental Protection Agency.
Physical and chemical …
The Bryoecology Of Montgomery County, Illinois, Elbert A. Traylor
The Bryoecology Of Montgomery County, Illinois, Elbert A. Traylor
Masters Theses
No abstract provided.
The Prairie Naturalist Vol. 8, Nos. 3 And 4 September-December 1976
The Prairie Naturalist Vol. 8, Nos. 3 And 4 September-December 1976
The Prairie Naturalist
SPRING MORTALITY OF INSECTIVOROUS BIRDS IN SOUTHERN MANITOBA ▪ J. R. Serie and R. E. Jones
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1976 ▪ R. N. Randall
MOSSES OF THE GREAT PLAINS: INTRODUCTION AND CATALOGUE ▪ S. P. Churchill
NOTES
Fulvous Tree Duck in North Dakota ▪ L. A. Jones
Unusual Mortality of a Saw-whet Owl ▪ H. A. Kantrud
Cardinal and Mockingbird in Jamestown, North Dakota ▪ D. H. and J. E. Johnson
BOOK REVIEWS
Essence of Wilderness ▪ K. T. Killingbeck
The Changing America ▪ L. M. Kirsch
A Government Bird Book ▪ J. F. Cassel
Wildflowers ofthe Rockies …
Avian Succession On Lake Michigan Sand Dunes, John B. Van Orman
Avian Succession On Lake Michigan Sand Dunes, John B. Van Orman
Masters Theses
No abstract provided.
Effect Of The Chesapeake-Elizabeth Sewage Outfall Virginia Beach, Virginia On The Distribution And Ecology Of Benthic Foraminifera, James M. Bates Jr.
Effect Of The Chesapeake-Elizabeth Sewage Outfall Virginia Beach, Virginia On The Distribution And Ecology Of Benthic Foraminifera, James M. Bates Jr.
OES Theses and Dissertations
Sediment and bottom water samples from seven stations at the Chesapeake Elizabeth sewage outfall, Virginia Beach, Virginia were collected in order to evaluate the effect of the outfall on benthic foraminifera. The top centimeter of sediment was analyzed for living and total (live plus dead) foraminiferal densities, chlorophyll a, sediment grain size, ATP, percentage of silt and clay, and total organic carbon. Bottom water salinity, temperature, and ammonia were also analyzed.
Living foraminiferal density increased from March to July and with distance from the outfall. Total foraminiferal density also increased from March to July. The set of environmental variables was …
The Prairie Naturalist Volume 8, Nos. 1 And 2. March-June 1976
The Prairie Naturalist Volume 8, Nos. 1 And 2. March-June 1976
The Prairie Naturalist
THE POTAMOGETONACEAE IN NORTH DAKOTA ▪ G. E. Larson
NOTES
January Record for Western Grebe at Amenia, North Dakota ▪ J. M. Wiehe and J. F. Cassel
An Observation of Possible Mallard Adoption ▪ R. A. Stromstad
Unusual Mortality in California Gulls ▪ G. R. Lingle
Great Horned Owl Predation of Penned Gray Partridge ▪ J. W. Schulz
BOOK REVIEWS
North Dakota's Own Bird Book ▪ B. and A. Gammell
North Dakota's Wildlife ▪ Staff
A New Bird Book for Minnesota ▪ D. H. Johnson
Two New Waterfowl Books ▪ T. J. Dwyer
Two Canadian Bird References ▪ Staff
Canadian …
Breeding Birds And Vegetation Of The Central Illinois Floodplain Forest, Daniel Edward Varland
Breeding Birds And Vegetation Of The Central Illinois Floodplain Forest, Daniel Edward Varland
Masters Theses
No abstract provided.
Ecological Comparisons Of Four Plethodontid Salamanders In A Ravine In West Central Indiana, Stephen L. Reinbold
Ecological Comparisons Of Four Plethodontid Salamanders In A Ravine In West Central Indiana, Stephen L. Reinbold
Masters Theses
No abstract provided.
An Ecological Study Of The Algal Potamoplankton Communities Upstream And Downstream From A Sanitary Landfill On Riley Creek, Coles County, Illinois, Larry W. Coutant
An Ecological Study Of The Algal Potamoplankton Communities Upstream And Downstream From A Sanitary Landfill On Riley Creek, Coles County, Illinois, Larry W. Coutant
Masters Theses
No abstract provided.
The Prairie Naturalist Vol. 7, No.4. December 1975
The Prairie Naturalist Vol. 7, No.4. December 1975
The Prairie Naturalist
COMPARISON OF FLOWERING RECORDS FROM KANSAS AND NORTH DAKOTA ▪ O. A. Stevens
REPAIRED BONE BREAK IN A HOUSE SPARROW ▪ C. L. Cink and T. K. Broschat
A LARGE RACOON LITTER ▪ E. K. Fritzell and J. W. Matthews
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA –1975 ▪ R. N. Randall
BOOK REVIEW
Autumn Hawk Migrations ▪ P. B. Hofslund
The Prairie Naturalist Vol. 7 , Nos. 2 And 3. June-September, 1975
The Prairie Naturalist Vol. 7 , Nos. 2 And 3. June-September, 1975
The Prairie Naturalist
VASCULAR FLORA OF EMMONS COUNTY, NORTH DAKOTA ▪ R. P Williams and W. T. Barker
NOTES
Unusual Nesting Site of Barn Swallows ▪ W. A. Buresh
Summer Tanager in Burleigh County, North Dakota ▪ W. A. Buresh
Additional Record of Summer Tanager in North Dakota ▪ J. F. Cassel
Snowy Owl in McHenry County, North Dakota, in May ▪ W. A. Buresh
Diatom Phytoplankton And Periphyton Studies Of The Headwaters Of Henrys Fork Of The Snake River, Island Park, Idaho, Richard L. Clark
Diatom Phytoplankton And Periphyton Studies Of The Headwaters Of Henrys Fork Of The Snake River, Island Park, Idaho, Richard L. Clark
Theses and Dissertations
An ecological baseline study of the diatom flora was conducted on the headwaters of Henrys Fork of the Snake River, Idaho. The diatom flora of this spring fed drainage basin consisted of both phytoplankton and periphyton. Thirty-nine genera, two hundred forty-four species, eighty-two additional varieties, and seven additional forms were identified from these waters. Species of Melosira, Stephanodiscus, Fragilaria, Synedra, and Asterionella were found in the plankton of Henrys Lake and Island Park Reservoir. Diatoma, Fragilaria, Synedra, Eunotia, Achnanthes, Navicula, Pinnularia, Gomphonema, Cymbella, Nitzschia, and Surirella were the important genera present in the periphyton.
The Prairie Naturalist Volume 7, No.1. March 1975
The Prairie Naturalist Volume 7, No.1. March 1975
The Prairie Naturalist
MIGRATION OF BIRDS IN NORTH DAKOTA DURING FAll 1974 ▪ J. T. Lokemoen & D. H. Johnson.
REPRODUCTION AND DEVELOPMENT OF FOUR MALLARD LINES ▪ R. J. Greenwood
The Prairie Naturalist Volume 6, Nos. 3 And 4. September-December 1974
The Prairie Naturalist Volume 6, Nos. 3 And 4. September-December 1974
The Prairie Naturalist
A BIOLOGICAL SURVEY OF KRAFT SLOUGH ▪ G. L. Krapu & H. F. Duebbert
CHRISTMAS BIRD·COUNTS FOR NORTH DAKOTA - 1974 ▪ R. N. Randall
USE OF SMALL FENCES TO PROTECT GROUND BIRD NESTS FROM MAMMALIAN PREDATORS ▪ A. B. Sargeant & A. D. Kruse
BOOK REVIEW: Finding Birds in Minnesota ▪ E. M. Welter
A Taxonomic And Ecologic Study Of The Riverbottom Forest On St. Mary River, Lee Creek And Belly River In Southwest Alberta, Canada, Robert Keith Shaw
A Taxonomic And Ecologic Study Of The Riverbottom Forest On St. Mary River, Lee Creek And Belly River In Southwest Alberta, Canada, Robert Keith Shaw
Theses and Dissertations
The riverbottom forest community of St. Mary River, Lee Creek and Belly River in southwest Alberta, Canada is a unique ecological entity characterized by poplar species having their major Alberta distribution along these streams. Stands in the community are dominated by three tree species, six shrub species and nine herb species. Establishment of the community is dependent on climate and substrate; destruction is the result of progressive lateral stream-flow erosion. Soils are sandy loams above gravel, with pH values of 7.7 to 8.0 and soluble salt concentration of 176 to 458 parts per million. Trees in mature stands averaged 23.0 …
The Prairie Naturalist Volume 6, No.2. June 1974
The Prairie Naturalist Volume 6, No.2. June 1974
The Prairie Naturalist
WOOD DUCKS IN NORTH DAKOTA ▪ H. A. Doty
AERIAL FEEDING BY RED-WINGED BLACKBIRDS NEAR FULLER'S LAKE, NORTH DAKOTA ▪ W. C. Royall, Jr. & O. E. Bray
ARBOREAL WOODCHUCKS? ▪ K. T. Killingbeck
IMAGES, CHOICE, AND COMMUNITY DEVELOPMENT ▪ E. Smith
BREEDING STATUS OF THE LEAST BITTERN IN NORTH DAKOTA ▪ C. L. Cink
NOTE: Maximum Sizes for Ambystomatid Salamanders ▪ D. W. Larson
A Study Of The Radiation Quality Under Plant Canopies In The Wave Range 0.4 To 2.5 Microns, Nolasco G. Baldazo
A Study Of The Radiation Quality Under Plant Canopies In The Wave Range 0.4 To 2.5 Microns, Nolasco G. Baldazo
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The spectral distribution of the global radiation from 0.4 to 2.5 microns penetrating deciduous and coniferous canopies were measured during clear days between 10 a.m. and 2 p.m. using a double-quartz monochromator.
In the visible region (0.4 to 0.7 micron) the average relative spectral transmissions under both canopies are about one percent beginning at 0.4 micron and decreasing to about half a percent at 0.67 micron. There is only a small peak in the green (0.55 micron) transmission under deciduous stands while there is none under coniferous canopies. The slightly higher transmission in the blue (0.4 micron) is attributed to …
The Use Of Color Infrared Aerial Photography In Determining Salt Marsh Vegetation And Delimiting Man-Made Structures Of Lynnhaven Bay, Virginia, Robert E. Holman Lll
The Use Of Color Infrared Aerial Photography In Determining Salt Marsh Vegetation And Delimiting Man-Made Structures Of Lynnhaven Bay, Virginia, Robert E. Holman Lll
Biological Sciences Theses & Dissertations
Color infrared aerial photography was found to be superior to color aerial photography in an ecological study of Lynnhaven Bay, Virginia. The research was divided into three phases: 1) determination of the feasibility of correlating color infrared aerial photography with wetland species composition and zonation patterns, 2) determination of the accuracy of the aerial interpretation and problems related to the aerial method used, and 3) comparison of developed with undeveloped areas along Lynnhaven Bay's shoreline.
Wetland species composition and zonation patterns of major cones were correlated with aerial infrared photography and resulted in a high degree of accuracy. Problems with …