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Articles 1 - 30 of 128
Full-Text Articles in Ecology and Evolutionary Biology
Variation In Pappogeomys Castanops (Geomyidae) On The Llano Estacado Of Texas And New Mexico, Robert C. Dowler, Hugh H. Genoways
Variation In Pappogeomys Castanops (Geomyidae) On The Llano Estacado Of Texas And New Mexico, Robert C. Dowler, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
Nongeographic and geographic variation in the yellow-cheeked pocket gopher, Pappogeomys castanops, were analyzed in specimens collected in northwestern Texas and eastern New Mexico. Univariate and multivariate methods of analysis were utilized to assess variation in morphometric characters among 12 samples of P. castanops. Because of significant variation with age, only adult specimens were used in analyses. Adult males were significantly larger than females in all 13 characters studied. Our analyses of geographic variation reveal that those specimens previously assigned to the subspecies P. c. simulans are not sufficiently distinct to warrant subspecific designation.
Predation Of Upland Game And Its Management, Roger Wells
Predation Of Upland Game And Its Management, Roger Wells
Great Plains Wildlife Damage Control Workshop Proceedings
There is probably no greater topic that elicits greater emotion in public wildlife discussions than that of predation. A variety of groups each with their own particular special interest surround the topic.
Some advocate complete protection of predators on the premise that their activities merely result in a "balance of nature." The opposite viewpoint argue just as strongly for the total elimination of Predators of valued wildlife in order to have greater number for man's enjoyment.
The Prairie Naturalist Volume 11, Number 4. December 1979
The Prairie Naturalist Volume 11, Number 4. December 1979
The Prairie Naturalist
THE STATUS OF HERONS, EGRETS AND IBISES IN NORTH DAKOTA ▪ J. T. Lokomoen
RANGE EXPANSION OF BAIRD'S SPARROW IN SOUTH DAKOTA ▪ H. A. Kantrud and C. A. Faanes
NESTING RECORDS OF THE WOOD THRUSH IN NORTH DAKOTA ▪ S. O. Lambeth and D. O. Lambeth
SOME ECOLOGICAL ASPECTS OF MARBLED GODWITS AND WILLETS IN NORTH DAKOTA ▪ K. F. Higgins, L. M. Kirsch, M. R. Ryan and R. B. Renken
NOTES ON THE INCUBATION BEHAVIOR OF BLACK-BELLIED WHISTLING DUCKS ▪ E G. Bolen and E. N. Smith
NOTES
Red Fox Captures Sharp-tailed Grouse at the Lek ▪ S. …
Book Review Of "The Little Universe Of Man" By C. D. Darlington, Carl J. Bajema
Book Review Of "The Little Universe Of Man" By C. D. Darlington, Carl J. Bajema
Other Scholarly Publications
No abstract provided.
The Life History, Behavior, And Ecology Of Etheostoma Sagitta (Jordan And Swain), John Eldon Lowe Jr
The Life History, Behavior, And Ecology Of Etheostoma Sagitta (Jordan And Swain), John Eldon Lowe Jr
Masters Theses
The life history, behavior, and ecology of Etheostoma sagitta (Jordan and Swain) were studied in the Cumberland River system in Tennessee. Diving equipment was utilized in making observations on macrohabitat, microhabitat, distribution, seasonal and diurnal activity, feeding behavior, migration, territoriality, associated species, competition, and population density and structure. Courtship, reproductive behavior, and diurnal activity were studied primarily in an experimental raceway. Feeding behavior and territoriality were studied in the raceway and in a 77.5-1. (20-gal.) aquarium. Parasites, longevity, age and growth, ova numbers and maturation, sex ratios, and food habitats were examined in the laboratory.
Etheostoma sagitta was found in …
Concurrent Drinking By Pigeons On Fixed-Interval Reinforcement Schedules, Robert H.I. Dale
Concurrent Drinking By Pigeons On Fixed-Interval Reinforcement Schedules, Robert H.I. Dale
Scholarship and Professional Work - LAS
Three experienced pigeons were exposed to at least ten consecutive 100-min sessions on each of three food-reinforced fixed-interval (FI) schedules: FI 50-sec, FI 100-sec and FI 200-sec. Water was freely available. Drinking was largely confined to the first third of each fixed interval, and the mean sessional water intake was directly related to the food-reinforcement rate for each animal. The animals drank very quickly, i.e., 3-4 ml/sec, but the drinking bouts were brief, i.e., 0.8-1.4 sec, and infrequent, i.e., 2-5/hr. The parameters describing concurrent drinking in the pigeon are strikingly different from those describing rats’ drinking under similar reinforcement schedules, …
Freshwater Wetlands : Their Relevance To The Critical Areas Program Of The State Planning Office, Timothy Zorach
Freshwater Wetlands : Their Relevance To The Critical Areas Program Of The State Planning Office, Timothy Zorach
Maine Collection
Freshwater Wetlands : Their Relevance to the Critical Areas Program of the State Planning Office
by Timothy Zorach : A Report Prepared for the Maine Critical Areas Program, State Planning Office, 184 State Street, Augusta, Maine 04333. November 1979
Planning Report # 70.
Contents: Introduction / Wetland Classification / Ecology of Freshwater Wetland Ecosystems in Maine / Life History of Wetlands / Wetland Management / Freshwater Wetland Evaluation / References Cited and Selected Literature
Part II: A Trial Inventory and Identification of Significant Freshwater Wetlands in the Presumpscot River Basin, Saco River Basin and Associated Coastal Drainage Basins.
Biochemical Genetics And Systematics Of Garter Snakes Of The Thamnophis Elegans-Couchii-Ordinoides Complex, Robin Lawson, Herbert C. Dessauer
Biochemical Genetics And Systematics Of Garter Snakes Of The Thamnophis Elegans-Couchii-Ordinoides Complex, Robin Lawson, Herbert C. Dessauer
Occasional Papers of the Museum of Natural Science, Louisiana State University
No abstract provided.
Morphological Evidence For Taxonomic Partitioning Of The Thamnophis Elegans Complex (Serpente, Colubridae), Douglas A. Rossman
Morphological Evidence For Taxonomic Partitioning Of The Thamnophis Elegans Complex (Serpente, Colubridae), Douglas A. Rossman
Occasional Papers of the Museum of Natural Science, Louisiana State University
No abstract provided.
Sightings Of Moose, Deer, And Bears On Roads In Northern Ontario, D. Fraser
Sightings Of Moose, Deer, And Bears On Roads In Northern Ontario, D. Fraser
Anthropogenics and Population Decline Collection
No abstract provided.
Survey Of Vegetation And Elevational Relationships Within Coastal Marsh Transition Zones In The Central Atlantic Coastal Region : Final Report, John D. Boon, Donna M. E. Ware, Gene M. Silberhorn
Survey Of Vegetation And Elevational Relationships Within Coastal Marsh Transition Zones In The Central Atlantic Coastal Region : Final Report, John D. Boon, Donna M. E. Ware, Gene M. Silberhorn
Reports
This report contains the findings of a one-year botanical field study of the marsh to uplands vegetational transition zone at selected sites within the Central Atlantic Coastal Region of the United States. The latter region is herein defined to include the coasts of Delaware, Maryland, Virginia, and North Carolina. To obtain results representative of the various coastal environments and associated wetlands types found within this region, five primary sites and one to four secondary sites in the vicinity of each primary site were chosen for detailed investigations.
Structure Of A Subtidal Benthic Community Near Cape Charles, Virginia, R. Michael Ewing
Structure Of A Subtidal Benthic Community Near Cape Charles, Virginia, R. Michael Ewing
Biological Sciences Theses & Dissertations
Species composition, distribution, and abundance of benthic invertebrates of a subtidal community were examined at a location on the lower Delmarva Peninsula near Cape Charles, Virginia. Macrobenthos was sampled quarterly between June, 1977 and June, 1978 at nine sites along a transect in Old Plantation Creek and the adjacent offshore area. Spatial and temporal patterns of numerically important species are discussed.
Sampling sites and species were grouped by a numerical classification strategy which consisted of the Bray-Curtis similarity measure and group-average clustering. Three faunal assemblages were identified with the aid of constancy and fidelity nodal analyses: (1) a tidal creek …
Records Of Bats (Mammalia: Chiroptera) From Suriname, Hugh H. Genoways, Stephen L. Williams
Records Of Bats (Mammalia: Chiroptera) From Suriname, Hugh H. Genoways, Stephen L. Williams
University of Nebraska State Museum: Mammalogy Papers
Ten species are added to the 60 species of bats already known to occur in Suriname. The species added include Micronycteris minuta, M. nicefori, Phylloderma stenops, Tonatia bidens, T. brasiliense, Carollia brevicauda, Chiroderma trinitatum, Vampyressa bidens, Promops centralis, and P. nasutus. Additional information is presented on five species previously recorded from Suriname, including Pteronotus parnellii, Mimon crenulatum, Artibeus concolor, Chiroderma villosum, and Sturnira tildae.
The Prairie Naturalist Volume 11, Number 3. September 1979
The Prairie Naturalist Volume 11, Number 3. September 1979
The Prairie Naturalist
DISTRIBUTION AND NATURAL HISTORY OF AMPHIBIANS AND REPTILES IN WESTERN NEBRASKA WITH ECOLOGICAL NOTES ON THE HERPETILES OF ARAPAHO PRAIRIE ▪ R. E. Ballinger, J. D. Lynch and P. H. Cole
AVIAN MORTALITY FROM A SEVERE HAIL STORM ▪ J. L. Piehl
EFFECTS OF A SUMMER STORM ON BIRD POPULATIONS ▪ D. H. Johnson
SEXING AND AGING CRITERIA FOR THE WHITE PELICAN ▪ G. R. Lingle and N. F. Sloan
CANVASBACK DUCK RECOVERS FROM COMPOUND LUXATION TO WING ▪ H. A. Doty
SECOND NORTH DAKOTA RECORD OF LOUISIANA WATERTHRUSH ▪ C. A. Faanes
FIRST NESTING RECORD OF A LOUISIANA HERON …
Morphology And Distribution Of Petiolar Nectaries In Ipomoea (Convolvulaceae), Kathleen H. Keeler, Robert B. Kaul
Morphology And Distribution Of Petiolar Nectaries In Ipomoea (Convolvulaceae), Kathleen H. Keeler, Robert B. Kaul
School of Biological Sciences: Faculty Publications
The distribution of petiolar nectaries in 24 species of Ipomoea was investigated. Petiolar nectaries were found on 12 species (8 new reports, 4 confirmations of previous reports) and quoted from the literature as being found on 3 other species; they were absent from 9 species investigated. The structure of petiolar nectaries in the genus ranges from simple beds of superficial nectar-secreting trichomes (1 species), to slightly recessed "basin nectaries" (8 species), to "crypt nectaries," which are structurally the most complex extrafloral nectaries known (3 species). (Structures were not determined for 3 species.) Petiolar nectaries are present in all subgenera, but …
The Plant Tension Zone In Michigan, Margaret Thompson Mccann
The Plant Tension Zone In Michigan, Margaret Thompson Mccann
Masters Theses
No abstract provided.
Distributional Ecology Of Vegetation In The Vernal Pools Of The Santa Rosa Plateau, California, John A. Rosario
Distributional Ecology Of Vegetation In The Vernal Pools Of The Santa Rosa Plateau, California, John A. Rosario
Loma Linda University Electronic Theses, Dissertations & Projects
Interpool distribution studies of 10 vernal pools on the Santa Rosa Plateau found area to be the best single predictor of species richness in each type of regression model evaluated. Area predicted most accurately in a mixed linear-curvilinear regression model (y = a + b log x). Area appeared to reflect ecologic diversity, because multiple linear regression models provided better predictions of species richness using combinations of physical characteristics which excluded area from the regression equation. In addition, species turnover was demonstrated in a single vernal pool that was evaluated.
Intrapool distribution was studied along a soil moisture/microtopographic gradient in …
Plant Response Parameters To General Patton's Armored Maneuvers In The Eastern Mojave Desert Of California, Randall J. Iwasiuk
Plant Response Parameters To General Patton's Armored Maneuvers In The Eastern Mojave Desert Of California, Randall J. Iwasiuk
Loma Linda University Electronic Theses, Dissertations & Projects
The purpose of this study, which was undertaken from September, 1977 through June, 1978 was to survey the response of perennial vegetation to General Patton's World War II armored maneuvers. This information will be used to help construct a basis for predicting recovery rates on the effects of off-road vehicle impacts in the California Desert Conservation Area (CDCA). These impacts were assessed in three usage categories: tank tracks in the maneuvers areas; roadways, which were used primarily by jeeps and trucks; and tent areas, cleared areas in which tents and other semi-permanent structures were erected. The data generated from these …
Effects Of Fraser Fir Death On Population Dynamics In Southern Appalachian Boreal Ecosystems, Rex Randall Boner
Effects Of Fraser Fir Death On Population Dynamics In Southern Appalachian Boreal Ecosystems, Rex Randall Boner
Masters Theses
High elevation fir and spruce-fir forests of the Southern Appalachians were sampled in the Black Mountains, North Carolina and in the Great Smoky Mountains, Tennessee and North Carolina. Both absolute and relative data were collected on the composition of the overstory and understory strata; the ground cover stratum was sampled for relative data. Both stands infested by the balsam woolly aphid and un-infested stands were sampled to determine the effects of the opened canopy caused by the death of Fraser fir on the population dynamics of these boreal ecosystems. Comparison of stand composition and use of correlation and regression analysis …
The Spatial And Temporal Distribution Of Fish Eggs And Larvae In Hempstead Bay Estuary, Joseph Adelard Lessard
The Spatial And Temporal Distribution Of Fish Eggs And Larvae In Hempstead Bay Estuary, Joseph Adelard Lessard
OES Theses and Dissertations
The ichthyoplankton of Hempstead Bay estuary was sampled from December 1972 to mid March 1974. Eleven stations were sampled by towing a 0.5 meter diameter plankton net. Eggs were most abundant during June and July with an average concentration calculated to be above 5,500/100m3. Egg densities were the lowest during the fall and winter. Larvae were most frequently taken from March through July with densities varying greatly among the samples. The eggs of Brevoortia tyrannus, Anchoa mitchilli, Tautoga onitis, Tautogolabrus adspersus, and Scophthalmus aguosus and the larvae of Menidia menidia, Ammodvtes hexapterus and Pseudopleuronectes americanus constituted most …
Seasonal Feeding Habits Of The River Otter (Lutra Canadensis) In Ditches Of The Great Dismal Swamp, Ronnie M. Pierce
Seasonal Feeding Habits Of The River Otter (Lutra Canadensis) In Ditches Of The Great Dismal Swamp, Ronnie M. Pierce
Biological Sciences Theses & Dissertations
To determine the seasonal feeding habits of the river otter (Lutra canadensis) in the Great Dismal Swamp 209 scats were collected, from May 1977 to May 1978, and analyzed for content. Remains of crayfish were found with a frequency of occurrence of 82% while fish remains occurred in 62% of the scat. This is in direct contrast to previous studies (from other areas) which found fish with a greater frequency than crayfish. Fish consumption was believed to increase during periods of low water or low temperatures. Sunfish were represented most frequently and may be the preferred fish. Amphiuma remains …
The Prairie Naturalist Volume 11 , Number 2. June 1979
The Prairie Naturalist Volume 11 , Number 2. June 1979
The Prairie Naturalist
SPECIES WITH EXTRA FLORAL NECTARIES IN A TEMPERATE FLORA (NEBRASKA) ▪ Kathleen H. Keeler
PLANTS OF MOUNT GOLIATH RESEARCH NATURAL AREA ▪ Jeanette Hartman and Rod Mitchell
STATUS OF THE STURGEON CHUB (HYBOPSIS GELIDA) AND SICKLEFIN CHUB (HYBOPSIS MEEKI) IN NORTH DAKOTA ▪ Robert C. Reigh and Dean S. Elsen
OBSERVATIONS ON COYOTE BIOLOGY IN NORTH-CENTRAL MISSOURI ▪ Fred B. Samson and Bill D. Hill
DESTRUCTION TO NESTING BIRDS ON A MARSH BAY BY A SINGLE STORM ▪ Martin K. McNicholl
BOOK REVIEWS
Presentations on Predators ▪ Staff
Migratory Game Birds ▪ Ronald A. Ryder
Wolf …
The Ontogeny And Organization Of Comfort Behavior In Adelie Penguins, Marc Bekoff, David G. Ainley, Anne Bekoff
The Ontogeny And Organization Of Comfort Behavior In Adelie Penguins, Marc Bekoff, David G. Ainley, Anne Bekoff
Ethology Collection
No abstract provided.
Search Image Formation In The Blue Jay (Cyanocitta Cristata), Alexandra T. Pietrewicz, Alan Kamil
Search Image Formation In The Blue Jay (Cyanocitta Cristata), Alexandra T. Pietrewicz, Alan Kamil
Papers in Behavior in Biological Sciences
Blue jays trained to detect Catocala moths in slides were exposed to two types of slide series containing these moths: series of one species and series of two species intermixed. In one species series, detection ability increased with successive encounters with one prey type. No similar effect occurred in two species series. These results are a direct demonstration of a specific search image.
City Of Virginia Beach Marsh Inventory: Volume 2 Lynnhaven River, Lake Rudee, And Their Tributaries, Thomas A. Barnard, Damon G. Doumlele, Gene M. Silberhorn
City Of Virginia Beach Marsh Inventory: Volume 2 Lynnhaven River, Lake Rudee, And Their Tributaries, Thomas A. Barnard, Damon G. Doumlele, Gene M. Silberhorn
Reports
No abstract provided.
The Density, Distribution, And Activity Patterns Of Woodchucks In Cades Cove, Great Smoky Mountains National Park, Cathy A. Taylor
The Density, Distribution, And Activity Patterns Of Woodchucks In Cades Cove, Great Smoky Mountains National Park, Cathy A. Taylor
Masters Theses
The purpose of this study was to delineate certain population characteristics and behavioral aspects of the woodchuck (Marmota monax) in the southeastern extremity of its range. Random quadrants from a grid system of the Cades Cove area, GSMNP, were systematically searched for active woodchuck burrow systems during the summers of 1976, 1977, and 1978. All burrow systems, topographical features, and buildings were marked on a scaled drawing and various burrow dimensions and land usage were recorded. Twice weekly between 7 July 1977 and 11 July 1978, observations were made of woodchucks to assess behavioral responses to the environment. …
Isolation Of Mycoplasma From The Genital Tracts Of Elephants, Harold W. Clark, Daniel C. Laughlin, Jack S. Bailey, Thomas Mcp Brown
Isolation Of Mycoplasma From The Genital Tracts Of Elephants, Harold W. Clark, Daniel C. Laughlin, Jack S. Bailey, Thomas Mcp Brown
Elephant
The authors report finding arthritogenic agents, mycoplasmas, for the first time in a large group of captive elephants that are frequently crippled with rheumatism.
The Addo Elephant Research Project: A Brief Introduction, Anthony Hall-Martin
The Addo Elephant Research Project: A Brief Introduction, Anthony Hall-Martin
Elephant
Description of "an intensive research programme on the ecology, population dynamics, and behaviour" of elephants in the Addo Bush area of Cape Province, South Africa, launched in May 1976.
Iucn Elephant Survey And Conservation Programme: Summary Of Interim Report On Elephants In Kenya, Alison K. K. Hillman
Iucn Elephant Survey And Conservation Programme: Summary Of Interim Report On Elephants In Kenya, Alison K. K. Hillman
Elephant
Preliminary summary of evidence on the status and population trends of elephants in Kenya, condensed from the original.
Observations Of Elephants In East And Southern Africa, Jeheskel Shoshani
Observations Of Elephants In East And Southern Africa, Jeheskel Shoshani
Elephant
Selected short observations on African elephants (Loxodonta africana) made during 1978 in East and Southern Africa.