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Articles 4141 - 4170 of 4182
Full-Text Articles in Natural Resources and Conservation
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
Microfossils From The Upper Severy Shale (Pennsylvanian) Near Dubois, Nebraska, Robert F. Diffendal Jr.
Microfossils From The Upper Severy Shale (Pennsylvanian) Near Dubois, Nebraska, Robert F. Diffendal Jr.
School of Natural Resources: Faculty Publications
Organic rich limestone nodules within the Severy Shale Formation collected directly above the Nodaway Coal Member near DuBois, Nebraska, have yielded a rich microflora and microfauna. The microflora includes Triletes megaspores, seeds, cuticle, and pieces of wood with well preserved structures. The microfaunal skeletal material is either partially or completely replaced by pyrite, marcasite, or, in rare cases, by sphalerite. The following major invertebrate groups and genera within these groups have been identified to date: Bryozoa (one undetermined genus); Brachiopoda (Juresania) ; Gastropoda (four undetermined genera); Ammonoidea (one undetermined genus); Ostracoda (Amphissites, Coryellites, Hollinella, Macrocypris); Echinoidea (five spine types); and …
Finitely Generated Modules Over Bezout [email protected], Roger Wiegand, Sylvia Wiegand
Finitely Generated Modules Over Bezout [email protected], Roger Wiegand, Sylvia Wiegand
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
Let R be a Bezout ring (a commutative ring in which all finitely generated ideals are principal), and let M be a finitely generated R -module. We will study questions of the following sort: (A) If every localization of M can be generated by n elements, can M itself be generated by n elements? (B) If M 0 R m = Rn for some m, n, is Af necessarily free? (C) If every localization of M has an element with zero annihilator, does M itself have such an element? We will answer these and related questions for various familiar classes …
The Prairie Naturalist Volume 6, No.1. March 1974
The Prairie Naturalist Volume 6, No.1. March 1974
The Prairie Naturalist
AVIAN MORTALITY FROM COLLISIONS WITH OVERHEAD WIRES IN NORTH DAKOTA ▪ G. L. Krapu
NOTES ON THE BIOLOGY OF THE OLIVE-BACKED POCKET MOUSE PEROGNATHUS FASCIATUS ON THE NORTHERN GREAT PLAINS ▪ J. E. Pefaur & R. S. Hoffman
NOTE: Swans Resting on the Surface of A Dry Lake ▪ D. S. Gilmer
The Prairie Naturalist Volume 5, No.4. December 1973
The Prairie Naturalist Volume 5, No.4. December 1973
The Prairie Naturalist
REESTABLISHMENT OF PRAIRIE IN EASTERN NORTH DAKOTA ▪ O. A. Stevens
THE AGE DISTRIBUTION OF ENVIRONMENTAL PERIODICALS ▪ D. H. Johnson
SOME OBSERVATIONS ON THE ECOLOGY OF PLUMATELLA REPENS (L.) (BRYOZOA: PLUMATELLIDAE) IN NORTHEASTERN NORTH DAKOTA ▪ R. D. Stoaks
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA - 1973 ▪ R. N. Randall 61
NOTE: Red-bellied Woodpecker in Rolette, County, North Dakota ▪ D. T. Disrud 52
Index to Volume 5
Reply (A Comparison Of Satellite-Derived, Low-Level And Cirrus-Level Winds With Conventional Wind Observations), Kenneth Hubbard
Reply (A Comparison Of Satellite-Derived, Low-Level And Cirrus-Level Winds With Conventional Wind Observations), Kenneth Hubbard
School of Natural Resources: Faculty Publications
No abstract provided.
The Prairie Naturalist Volume 5, No.3. September 1973
The Prairie Naturalist Volume 5, No.3. September 1973
The Prairie Naturalist
PRELIMINARY LIST OF NATURAL AREAS IN NORTH DAKOTA ▪ Harold A. Kantrud
BREEDING BIRD POPULATIONS OF RIVERINE FORESTS IN EASTERN MONTANA ▪ Roger L. Kroodsma
Spectral Irradiance In Nebraska Reservoirs And A New Instrument For Its Measurement, Gary D. Uphoff
Spectral Irradiance In Nebraska Reservoirs And A New Instrument For Its Measurement, Gary D. Uphoff
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
The Prairie Naturalist Volume 5, No.2. June 1973
The Prairie Naturalist Volume 5, No.2. June 1973
The Prairie Naturalist
SOME ASPECTS OF MINK-WATERFOWL RELATIONSHIPS ON PRAIRIE WETLANDS ▪ Robert T. Eberhardt
SUMMER AND FALL FOODS OF MINK ON THE J. CLARK SALYER NATIONAL WILDLIFE REFUGE ▪ Wayne F. Cowan and James R. Reilly
GIANT CANADA GEESE ▪ S. O. Kolstoe
SOME LICHENS OF BOG AND PAPER BIRCH FROM NORTH DAKOTA ▪ Dennis T. Disrud and Thomas D. Trana
A PALEOCENE FOSSIL LOCALITY IN SOUTHEASTERN SASKATCHEWAN: THE SHORT CREEK SECTION ▪ Paul L. Broughton
NOTE: A new orchid for North Dakota ▪ Robert E. Stewart
The Prairie Naturalist Volume 5, No. 1. March 1973
The Prairie Naturalist Volume 5, No. 1. March 1973
The Prairie Naturalist
DATES FOR FIRST FLOWERS ▪ O. A. Stevens
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1972 ▪ Robert N. Randall 7
NORTHERN ENVIRONMENTAL COUNCIL CORPORATE AWARD, 1972—RESPONSE ▪ K. A. Carlson
ALGAL ASSOCIATIONS IN NEARSHORE WATERS OF GOLDEN LAKE, A SHALLOW PRAIRIE LAKE IN EASTERN NORTH DAKOTA ▪ Douglas W. Larson
NOTE
Observations of Wintering Bald Eagles at Garrison Dam, North Dakota ▪ Frank A. Splendoria
Changes In Polysomes Of Black Locust Seedlings During Dehydration-Rehydration Cycles, James R. Brandle, P.D. Schnare, T.M. Hinckley, G.N. Brown
Changes In Polysomes Of Black Locust Seedlings During Dehydration-Rehydration Cycles, James R. Brandle, P.D. Schnare, T.M. Hinckley, G.N. Brown
School of Natural Resources: Faculty Publications
No abstract provided.
Nebraska Wild Flowers, Robert C. Lommasson, Paul Lommasson (Depositor)
Nebraska Wild Flowers, Robert C. Lommasson, Paul Lommasson (Depositor)
School of Natural Resources: Faculty Publications
This book is an attempt to present to the general public representative types of many of the conspicuous wild flowers found in Nebraska. These 260-some plants in no way constitute a flora of Nebraska which would number some 1,700 species of flowering plants. Included herein are both native and naturalized flowering herbaceous plants exclusive of the grasses and grasslike plants. Among these are plants that have had a long existence here and others which have recently invaded our area. Some are highly cherished and others are considered as common weeds. Excluded from this book are woody plants, such as trees, …
The Prairie Naturalist Volume 4, Nos. 3 And 4. September–December 1972
The Prairie Naturalist Volume 4, Nos. 3 And 4. September–December 1972
The Prairie Naturalist
THE SANDHILL CRANE WITH EMPHASIS ON ASPECTS
RELATED TO NORTH DAKOTA ▪ Douglas H. Johnson and Robert E. Stewart
SIZE AND COLORATION CHARACTERISTICS OF NEOTENIC SALAMANDERS IN DEVILS LAKE, N. D. ▪ Douglas W. Larson
BIRDS' EGGS: AN AID TO NATURE APPRECIATION ▪ S. O. Kolstoe
BIRD MORTALITY AT FOUR TOWERS IN EASTERN NORTH DAKOTA — FALL 1972 ▪ Michael Avery and Tom Clement
POPULATION IRRUPTION OF THE LEAST WEASEL (Mustela nivalis) IN EAST CENTRAL NORTH DAKOTA ▪ John T. Lokemoen and Kenneth F. Higgins
The Prairie Naturalist Volume 4, No. 2. June 1972
The Prairie Naturalist Volume 4, No. 2. June 1972
The Prairie Naturalist
EDITORIAL: Coordination: A Step for Environmental Protection ▪ Paul B. Kannowski
AN ANALYSIS OF BARN OWL AND GREAT HORNED OWL PELLETS FROM WESTERN NEBRASKA ▪ Eric A. Rickart
SUMMER OBSERVATIONS OF THE SHORT-EARED OWL IN THE RED RIVER VALLEY ▪ W. J. Walley
ADDITIONAL GLAUCOUS GULL RECORD FOR NORTH DAKOTA ▪ B. J. Rose
MIGRATION OF BIRDS IN NORTH DAKOTA DURING FALL 1971 ▪ Douglas H. Johnson, John T. Lokemoen and Paul F. Springer
WIDGEONGRASS BALLS ON ALKALI LAKES ▪ George A. Swanson and Paul F. Springer
A PROBABLE INSTANCE OF SONGBIRD COLLISION MORTALITY ▪ R. Wayne Weier
MUNICIPAL FLOODPLAIN …
The Delaware Limestone (Middle Devonian) Of Southwestern Ontario, Canada, Robert F. Diffendal Jr.
The Delaware Limestone (Middle Devonian) Of Southwestern Ontario, Canada, Robert F. Diffendal Jr.
School of Natural Resources: Faculty Publications
The Delaware Limestone of southwestern Ontario was originally called a part of the Corniferous Limestone by Murray (184.3-53). Since that time the same outcroppings have been designated, either wholly or partially, as the Onondaga Formation, the Big Lime, Delaware Limestone, Norfolk Formation, Dundee Limestone, Columbus Limestone, and the Dundee (= Delaware) Limestone. As recently as 1971 the names Dundee Limestone and Delaware Limestone were used for the same formation.
Hand specimen and petrographic study of samples from nineteen localities in southwestern Ontario indicates that the limestones of the formation exposed on the Niagara peninsula are intermediate in type between the …
The Prairie Naturalist Vol. 4, No.1. March, 1972
The Prairie Naturalist Vol. 4, No.1. March, 1972
The Prairie Naturalist
EDITORIAL: Advertising by Power Suppliers ▪ William A. Buresh
FIRST FLOWERS OF TREES, SHRUBS AND VINES IN THE FARGO, NORTH DAKOTA AREA ▪ O. A. Stevens
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1971 ▪ Robert N. Randall
ENVIRONMENTAL LEGISLATION IN NORTH DAKOTA—EXPECTATIONS AND REALITIES ▪ Paul B. Kannowski
SEASONAL NOTES ON PLANKTON ALGAE OF EAST STUMP LAKE, NORTH DAKOTA ▪ Dean W. Blinn
A SKUNK WITH A GLASS COLLAR ▪ Peter W. Rakowski
SPRING MIGRATION OF BIRDS IN NORTH DAKOTA IN 1971 ▪ Paul F. Springer, Douglas H. Johnson and John T. Lokemoen
NOTE
Red throated loon observed on Lake Ashtabula, …
Simultaneous Determination Of Short-Period Photosynthesis And Evapotranspiration (Horticulture And Forestry Progress Report No. 91), Norman J. Rosenberg
Simultaneous Determination Of Short-Period Photosynthesis And Evapotranspiration (Horticulture And Forestry Progress Report No. 91), Norman J. Rosenberg
School of Natural Resources: Faculty Publications
No abstract provided.
The Prairie Naturalist Vol. 3, Nos. 3 And 4. September-December, 1971
The Prairie Naturalist Vol. 3, Nos. 3 And 4. September-December, 1971
The Prairie Naturalist
EDITORIAL: Badlands-Old and New ▪ Paul B. Kannowski
SEASONAL INVESTIGATIONS OF ALGAE FROM DEVILS LAKE, NORTH DAKOTA ▪ Richard Verch and Dean W. Blinn
THE VASCULAR FLORA OF PEMBINA COUNTY, NORTH DAKOTA ▪ Rays E. Willenbring and William T. Barker
LET'S EAT WILD ▪ Alan M. Cvancara
SURF SCOTER IN NORTH DAKOTA ▪ Harold A. Kantrud
SNOW GOOSE-CANADA GOOSE HYBRIDS ▪ David C. McGlauchlin
NOTES
Cowbird parasitism of an upland plover nest ▪ Kenneth F. Higgins
Birds sighted within one hour from one observation point in Burleigh County, North Dakota ▪ William A. Buresh
Golden-winged warbler in Burleigh County, North …
Response Of Fraxinus Pennsylvanica M. Provenances To Daylength And Temperature, Cheng-Chun Ying
Response Of Fraxinus Pennsylvanica M. Provenances To Daylength And Temperature, Cheng-Chun Ying
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
A Study Of The Limnetic Zooplankton Of Five Flood Control Reservoirs, Glen R. Helzer
A Study Of The Limnetic Zooplankton Of Five Flood Control Reservoirs, Glen R. Helzer
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Numerical Computer Perpheral Interactive Device With Manual Controls, James C. Fletcher, Arthur I. Zygielbaum, Stanley S. Brokl
Numerical Computer Perpheral Interactive Device With Manual Controls, James C. Fletcher, Arthur I. Zygielbaum, Stanley S. Brokl
School of Natural Resources: Faculty Publications
A computer peripheral device is disclosed which in cludes a joystick whose displacement from a center position along two axes X and Y in either a plus (+) or a minus (-) direction is sensed. The displacement magnitude in either direction controls the rate of clock pulses provided by a variable frequency clock. The clock pulses from the two clocks are accumulated in two separate counters, whose contents are dis played. The contents of the counters are suppliable to a computer to update the contents of specific cells which define the position of a cursor on a display which is …
The Prairie Naturalist Volume 3, No.2. June, 1971
The Prairie Naturalist Volume 3, No.2. June, 1971
The Prairie Naturalist
EDITORIAL: Environmental Rights ▪ Paul B. Kannowski
RIVER BASINS PLANNING ▪ H. A. Hendrickson
WATER RESOURCE PLANNING GONE AMUCK ▪ Charles H. Stoddard
THE INTERACTION OF CITIZENS' GROUPS AND GOVERNMENT AGENCIES WITH RESPECT TO ENVIRONMENTAL PROBLEMS ▪ Robert L. Burgess
WORDS AND MEANINGS ▪ Paul T. Crary
ENFORCEMENT OF NORTH DAKOTA ENVIRONMENTAL LAWS AND REGULATIONS ▪ Robert E. Beck
BIRDS OBSERVED IN NORTH DAKOTA DURING THE WINTER OF 1970-71 ▪ John T. Lokemoen and Paul E. Springer
STATUS OF CLARK'S NUTCRACKER IN NORTH DAKOTA ▪ Lewis W. Oring and Robert W. Seabloom
WINGED ANTS AS FISH FOOD ▪ Charles H. …
The Prairie Naturalist Volume 3, No.1 March, 1971
The Prairie Naturalist Volume 3, No.1 March, 1971
The Prairie Naturalist
EDITORIAL: One House for Natural Resource Management ▪ Paul B. Kannowski
CHECKLIST OF BIRDS IN NORTH DAKOTA ▪ Robert E. Stewart
ADDITIONAL INFORMATION ON THE WOOD DUCK IN NORTH DAKOTA ▪ Edmund A. Hibbard
NOTES ON DANDELIONS ▪ O. A. Stevens
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1970 ▪ Robert N. Randall
THE EROSION OF ONE OF MAN'S MOST PRECIOUS NATURAL RESOURCES: HIS FREEDOM OF CHOICE ▪ Gordon L. Iseminger
NOTEWORTHY PLANTS OF THE NORTH DAKOTA PRAIRIE COTEAU FOREST ▪ W. Carter Johnson
NOTE — Duck mortality caused by wind ▪ Harold Kantrud
The Prairie Naturalist Volume 2, Nos. 3 And 4 September–December, 1970
The Prairie Naturalist Volume 2, Nos. 3 And 4 September–December, 1970
The Prairie Naturalist
EDITORIAL: Ecology and Environmental Education ▪ Keith R. Stamm
PEOPLE IN PERIL ▪ Thomas L. Kimball
MEN IN MAN'S ENVIRONMENT ▪ Robert L. Burgess
ENERGY AND MAN'S ENVIRONMENT ▪ Dale Henegar
MINERALS AND SOILS IN MAN'S ENVIRONMENT ▪ Wilson M. Laird
WATER IN MAN'S ENVIRONMENT ▪ Norman Peterson
THE ATMOSPHERE IN MAN'S ENVIRONMENT ▪ Gene A. Christianson
WHY ENVIRONMENTAL EDUCATION IN THE LIFE SCIENCES? ▪ James R. Reilly
ECOLOGICAL EDUCATION IN THE PHYSICAL SCIENCES ▪ William P. Eastwood
MASS MEDIA AND ENVIRONMENTAL EDUCATION ▪ Richard Palmer
THE JUDGMENT OF THE JACKAL ▪ C. Benson Thomerson
THE ROLE OF COLLEGES AND …
The Prairie Naturalist Volume 2, No.2 June, 1970
The Prairie Naturalist Volume 2, No.2 June, 1970
The Prairie Naturalist
EDITORIAL: Ecocide on the Sheyenne? ▪ Paul B. Kannowski
NEW RECORDS OF VASCULAR PLANTS IN NORTH DAKOTA ▪ Robert E. Stewart
SOME LOCAL NATIVE PLANT LOSSES AND SOME SAL V AGE ▪ O. A. Stevens
CHRISTMAS BIRD COUNTS IN NORTH DAKOTA ▪ Robert N. Randall
ENVIRONMENTAL DESIGN IN COMMUNITY PLANNING ▪ Cameron Man
DISTRIBUTION OF THE SCIRPUS VALIDUS COMPLEX IN NORTH DAKOTA ▪ Richard L. Ward
Record In Rock: A Handbook Of The Invertebrate Fossils Of Nebraska, Roger K. Pabian
Record In Rock: A Handbook Of The Invertebrate Fossils Of Nebraska, Roger K. Pabian
Conservation and Survey Division: Faculty and Staff Publications
Table of Contents:
Introduction
What Are Fossils? How Do They Form?
Fossilization
How Are Fossiliferous Rocks Formed?
What is Paleontology?
What Can Fossils Tell Us?
Fossils and Geologic Time
Fossils as Environmental Indicators
Fossils and Conservation
How Are Fossils Named?
Where Are Fossils Found?
Collecting Courtesy
Tools for Collecting Fossils
Tips on Collecting Fossils
Safety Rules
Quarry Safety
Safety Don'ts to Remember
Preparation of Specimens
A Bit of Advice
General Characteristics of Nebraska's Important Fossils
Phylum Protozoa (Single-Celled Animals)
The Living Protozoan
Fossil Protozoans from Nebraska
Phylum Porifera (Pore Bearers or Sponges)
The Living Sponge
Fossil Sponges from Nebraska
Phylum …
The Prairie Naturalist Volume 2, No. 1. March, 1970
The Prairie Naturalist Volume 2, No. 1. March, 1970
The Prairie Naturalist
EDITORIAL: Speaking of Ecologists ▪ Paul B. Kannowski
NEEDED: AN ETHICAL BASIS FOR ENVIRONMENTAL POLICY ▪ Gordon L. Iseminger
THE POPULATION PARADOX ▪ Gary L. Pearson
THE ENVIRONMENTAL CRISIS—A CALL TO ACTION ▪ Glen A. Sherwood
NORTH DAKOTA—1970 ▪ Philip B. Aus
Concentration Of Co, In The Air Above A Sugar Beet Field, K.W. Brown, Norman J. Rosenberg
Concentration Of Co, In The Air Above A Sugar Beet Field, K.W. Brown, Norman J. Rosenberg
School of Natural Resources: Faculty Publications
The concentration of CO, in air sampled above a sugar beet crop was measured during July, August, and early September 1966 at Scottsbluff, Nebr. During July the mean daytime concentration decreased from 310 ppm to 283 ppm as the leaf area index increased from 0.8 to 4.0. Only small deviations from the mean daytime Concentration of 283 ppm occurred during the remainder of the season. The mean nocturnal concentration during this period was 320 ppm and was more variable than the daytime concentration. The daily amplitude of concentration averaged 70 ppm and was as great at times as 100 ppm. …
Some Ecological Relations Of Fairy Shrimps In Alkaline Habitats Of Nebraska, D. B. Mccarraher
Some Ecological Relations Of Fairy Shrimps In Alkaline Habitats Of Nebraska, D. B. Mccarraher
Nebraska Game and Parks Commission: Staff Research Publications
Ecological studies on the distribution of fairy shrimps have been made from 246 sites in the sandhills region of Nebraska. New records for Nebraska have been established for Artemia salina, Branchinecta campestris, B. lindahli, B. mackini and Cyzicus mexicanus. Seasonal populations of shrimp have been located in habitats containing permanent fish populations. Water mineralization was the dominant environmental condition related to the distribution of phyllopods with sodium and potassium compounds predominating in the strongly alkaline lakes. Several of the Artemia lakes were classified as hydroxide sites. Many of the alkaline ponds, where B. lindahli and B. campestris flourish, are …
The Prairie Naturalist Volume 1, No.4. December 1969
The Prairie Naturalist Volume 1, No.4. December 1969
The Prairie Naturalist
EDITORIAL: Restoring Beauty to the Human Environment ▪ Paul B. Kannowski
A REQUIEM FOR THE PRAIRIE ▪ Hugh H. Iltis
BIRDING IN MY BACK YARD ▪ Mrs. George A. Anderson
OCCURRENCE OF THE CECROPIA AND ROCKY MOUNTAIN SILK MOTHS IN SOUTHWESTERN NORTH DAKOTA ▪ James Oberfoell