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Articles 181 - 210 of 231
Full-Text Articles in Ecology and Evolutionary Biology
A Population Study Of The Cave Beetle Neaphaenops Tellkampfi (Coleoptera, Carabidae) In Mushroom Cave, Hart County, Kentucky, Robert E. Bon Durant Sr.
A Population Study Of The Cave Beetle Neaphaenops Tellkampfi (Coleoptera, Carabidae) In Mushroom Cave, Hart County, Kentucky, Robert E. Bon Durant Sr.
Masters Theses
A two year census of the cave beetle Neaphaenops tellkampfi (Coleoptera, Carabidae) was conducted in Mushroom Cave, Hart County, Kentucky. Three methods were used to estimate populations of this beetle. A rise in population in certain areas of the cave was shown to occur in Mid-winter. The population as reported is felt to represent a portion of a much larger population which migrates toward the cave entrance beacuse of food shortages in winter with a summer movement back into deep cave habitat when the eggs of Hadenoecus subterraneus are plentiful.
Mammalian Succession On Lake Michigan Sand Dunes, John M. Olson
Mammalian Succession On Lake Michigan Sand Dunes, John M. Olson
Masters Theses
No abstract provided.
Interactions In Lambdoid Bacteriophage Populations, Bruce Edward Mitchell
Interactions In Lambdoid Bacteriophage Populations, Bruce Edward Mitchell
Masters Theses
The lambdoid bacteriophages are ideal subjects for the study of populational interactions at the molecular level because they do not mutually exclude one another in mixed infection of the same host cell. Previous work done in this laboratory using the lambdoid phage pairs λ-434 hy mi and λ-∅80 have demonstrated a density-dependent reduction in progeny yield per infected cell (burst size) as a function of increasing multiplicity of infection (m.o.i.). The λ cI gene which codes for the repress or molecule has been demonstrated to be the cause of the interaction in the λ-434 hy mi phage pair. …
A Study Of Symbiosis Involving The Fish-Eating Bat (Myotis Vivesi), The Least Petrel (Halocyptera Microsoma), The Black Petrel (Oceanodroma Melania), And The Lizard (Cnemidophorus Tigris), Joel King
Masters Theses
A field study was conducted on Partida Island in the Gulf of Mexico on the dates May 26 through July 26, 1977, inclusive.
Field observations were made of the lizard (Cnemidophorus tigris) preying on eggs and hatchlings of the least petrel (Halocyptena microsoma), and the black petrel (Oceanodroma melania). The petrels roost among rock slides with the fish-eating bat (Myotis vivesi).
In 24 trials of experimental boxes with lizards, bats, and petrels as subjects, 16 trials resulted in aggression of bats to lizards.
A symbiosis is postulated between bats and petrels.
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.
Movements Of The Gastropod, Campeloma Decisum, In An Artificial Stream, John Badgerow
Movements Of The Gastropod, Campeloma Decisum, In An Artificial Stream, John Badgerow
Masters Theses
No abstract provided.
Foliage Preference And Habitat Utilization By Migrating Warblers, John Calvin Stiner
Foliage Preference And Habitat Utilization By Migrating Warblers, John Calvin Stiner
Masters Theses
No abstract provided.
Studies On The Grooming Behavior And Morphology Of The Freshwater Prawn, Palaemonetes Kadiakensis, Bruce E. Felgenhauer
Studies On The Grooming Behavior And Morphology Of The Freshwater Prawn, Palaemonetes Kadiakensis, Bruce E. Felgenhauer
Masters Theses
No abstract provided.
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 …
Aquatic Plant Communities Of East-Central Illinois, Randolph Lee Vogel
Aquatic Plant Communities Of East-Central Illinois, Randolph Lee Vogel
Masters Theses
Aquatic plant communities of east-central Illinois were studied during the late summers of 1971 and 1976. Frequencies, relative frequencies and frequency of dominance were calculated for the various taxa. At the pond level, changes in the flora over the 5-year span have taken place, usually consisting of the addition or subtraction of one species. Overall, however, it was found that the aquatic community has remained relatively static, as has the percentage of ponds lacking aquatic plants. Factors influencing distributions and sterility are discussed and it was concluded that all the factors play varying roles, but no one factor or combination …
The Bryoecology Of Montgomery County, Illinois, Elbert A. Traylor
The Bryoecology Of Montgomery County, Illinois, Elbert A. Traylor
Masters Theses
No abstract provided.
Analysis Of The Capture-Recapture Method Of Determining Fish Population Size In A Pond Community, Richard E. Hall
Analysis Of The Capture-Recapture Method Of Determining Fish Population Size In A Pond Community, Richard E. Hall
Masters Theses
No abstract provided.
Ecology Of The Pirate Perch, Leslie D. Frankland
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.
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.
Land Snail Diversity At Rocky Branch Nature Preserve, Clark County, Illinois, Daniel J. Mott
Land Snail Diversity At Rocky Branch Nature Preserve, Clark County, Illinois, Daniel J. Mott
Masters Theses
Terrestrial, shell-bearing gastropods were collected at Rocky Branch Nature Preserve, Clark County, Illinois. A total of three hundred nineteen specimens were collected representing five families and fifteen species. Two species of the family Endodontidae, eight species of the family Polygyridae, three species of the family Zonitidae, and one species in each of the families Pupillidae and Succineidae were collected.
In addition, an attempt was made to find the relationship between species diversity and dominant woody vegetation and soil quality. The land at Rocky Branch Nature Preserve ranges from lowland flood plain to high second growth forest. The dominant trees of …
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.
Zooplankton Community Dynamics And Water Quality Of Polecat Creek, Coles County, Illinois, Spring, 1975, Carl Edward Baird
Zooplankton Community Dynamics And Water Quality Of Polecat Creek, Coles County, Illinois, Spring, 1975, Carl Edward Baird
Masters Theses
No abstract provided.
The Effect Of Social Rank Of Male Swordtails (Xiphophorus Helleri) On Sexual Behavior, Janet N. Marum
The Effect Of Social Rank Of Male Swordtails (Xiphophorus Helleri) On Sexual Behavior, Janet N. Marum
Masters Theses
The relationship between social rank and sexual behavior of the male swordtail (Xiphophorus helleri) was studied. Initially three tanks were established with three males and two females in each. Social rank, aggressive and sexual levels were recorded by observation of the interactions which occurred in the tanks. A second series of observations were made with the fish regrouped according to their initial rank, that is, dominant males grouped together, middle ranking males together and the lowest ranking males together. Aggressive and sexual levels were the highest for the highest ranking males in all tanks and in both trials, …
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.
An Attempt To Find Auditory Communication In The Squirrel Monkey Via Cooperative Conditioning, Michael T. Bardo
An Attempt To Find Auditory Communication In The Squirrel Monkey Via Cooperative Conditioning, Michael T. Bardo
Masters Theses
No abstract provided.
Limnological Investigation Of The Muskegon County, Michigan, Wastewater Storage Lagoons, W. Randolph Frykberg
Limnological Investigation Of The Muskegon County, Michigan, Wastewater Storage Lagoons, W. Randolph Frykberg
Masters Theses
No abstract provided.
A Statistical Approach To The Study Of The Ecosystems Of Seven Ponds In East-Central Illinois, Gregory Lee Orr
A Statistical Approach To The Study Of The Ecosystems Of Seven Ponds In East-Central Illinois, Gregory Lee Orr
Masters Theses
Gross primary productivity, heterotrophic bacterial numbers, and net phytoplankton densities of seven ponds in Coles County, Illinois, were studied in relation to physical, chemical, and biological habitat variables (light intensity and duration, turbidity, water temperature, pH, dissolved oxygen, sulfur, nitrogen, phosphorus, production, bacteria, and phytoplankton). Ten observations were made for each pond (except where otherwise noted) from 17 June through 25 August 1974. Stepwise multiple linear regression analyses of the data were used in order to determine those environmental factors which were important in predicting (i.e., significantly correlated with) bacterial and phytoplankton densities, and production. A multiple linear regression equation …
Aquatic Plant Communities Of Vermilion County, Illinois, John A. Wiedman
Aquatic Plant Communities Of Vermilion County, Illinois, John A. Wiedman
Masters Theses
No abstract provided.
Homing Studies Of Bank Swallows In Eastern Illinois, Jennifer Eileen Hagerstrom
Homing Studies Of Bank Swallows In Eastern Illinois, Jennifer Eileen Hagerstrom
Masters Theses
A series of homing experiments using 39 color-marked Bank Swallows (Riparia riparia) were carried out in eastern Illinois during the summer of 1975. The swallow colony was located four km east-northeast of Charleston, Illinois at the Charleston Stone Quarry. Eight release sites were located in the four compass directions from the home colony at distances of 14.4 to 32.3 km away.
The colony was approached before dawn and swallows were captured using tube traps. Birds were color-marked, banded, and taken in individual bags to the release site by automobile. Cloud cover, wind velocity, wind direction, and orientation behavior …
Breeding Bird Study On The Douglas-Hart Nature Preserve, An East-Central Illinois Modified Oldfield, Charles F. Zimmer
Breeding Bird Study On The Douglas-Hart Nature Preserve, An East-Central Illinois Modified Oldfield, Charles F. Zimmer
Masters Theses
No abstract provided.
Aspects Of Habitat Selection In Grassland Birds, Keith Graham Harrison
Aspects Of Habitat Selection In Grassland Birds, Keith Graham Harrison
Masters Theses
No abstract provided.
Defensive Behavior Of The Hognose Snake (Heterodon Platyrhinos), Brenda S. Hemken
Defensive Behavior Of The Hognose Snake (Heterodon Platyrhinos), Brenda S. Hemken
Masters Theses
Fourteen out of sixteen Heterodon platyrhinos eggs were hatched in late August, 1973. The immature snakes were manually stimulated and the resultant bluffing and death-feigning behaviors were observed. All of the experimental snakes bluffed, but only three out of ten feigned death. The major components of the bluffing behavior are spreading the neck, hissing, and striking. Death-feigning is preceded by contortions and shows variations in the positions of the mouth and tongue. The newly-hatched snakes exhibited both bluffing and death-feigning, indicating that the behaviors are innate.
An Introduction To The Ethology Of Citellus Variegatus, John W. Bell
An Introduction To The Ethology Of Citellus Variegatus, John W. Bell
Masters Theses
The above ground activity of the rock squirrel Citellus variegatus between November 6, 1972 and May 1, 1973, is described. This is a non-colonial species. Recognition was established between siblings by a nose to nose contact. In foraging they utilize almost any edible material available and during this time of year foraging is most intense between 11:00 a.m. and 4:00 p.m. Vocalization was limited to alarm calls, which brought the other squirrels to the top of the rocks to become alert, and squeals. Hibernation varied in length depending in part on the elevation and in some did not occur at …
Rate Of Growth As A Method Of Assessing Water Quality, George L. Johnston
Rate Of Growth As A Method Of Assessing Water Quality, George L. Johnston
Masters Theses
A study of the Embarras River basin was conducted to determine if rate of growth could be used as an indicator of water quality. Six species of sucker were collected from five locations using hand seines and electrofishing gear from December 1970 to December 1971. Tests of eighteen water quality parameters were conducted from November 1970 to November 1971.
The fish were measured and scale samples taken. The rate of growth of the fish taken at the five stations was analyzed and compared using the single classification analysis of variance. Condition factors were also compared.
Although there was some difference …