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Articles 37291 - 37320 of 39785
Full-Text Articles in Physical Sciences and Mathematics
Factors Regulating Settlement And Microhabitat Use By Spiny Lobsters Panulirus Argus, William F. Herrnkind, Mark J. Butler Iv
Factors Regulating Settlement And Microhabitat Use By Spiny Lobsters Panulirus Argus, William F. Herrnkind, Mark J. Butler Iv
Biological Sciences Faculty Publications
Clumps of highly-branched red algae Laurencia spp. serve as important settling habitat for postlarval spiny lobsters Panulirus argus and as residence for early benthic-stage juveniles. Given choice between the 2 most abundant macrophytes in Florida Bay, Laurencia spp. and the seagrass Thalassia testudinum, postlarval and juvenile lobsters chose Laurencia spp. Postlarvae apparently use intricate algal architecture as a cue for settlement, whereas juveniles use both architecture and food abundance in selecting habitat. In tethering experiments, predation on juvenile lobsters was very high on open sand, much reduced in algal clumps and seagrass, and lowest in dense algal meadows. Predation …
Sources And Times Of N On Wheat, J W. Bowden
Sources And Times Of N On Wheat, J W. Bowden
Experimental Summaries - Plant Research
86M9, Sources and times of N on wheat.
86M3, Rates and times of N and watering treatments on wheat.
86BA42, Times and levels of N on wheat. Residual value of nitrogen sources. Badgingarra and WHRS.
Reproductive Ecology, Population Dynamics And Seasonal Movements Of The Hogchoker (Trinectes Maculatus), In The Elizabeth River, Virginia, Stephen M. Smith
Reproductive Ecology, Population Dynamics And Seasonal Movements Of The Hogchoker (Trinectes Maculatus), In The Elizabeth River, Virginia, Stephen M. Smith
Dissertations, Theses, and Masters Projects
No abstract provided.
The Role Of Picoplankton In Phytoplankton Dynamics Of A Temperate Coastal Plain Estuary, Robert Triau Ray
The Role Of Picoplankton In Phytoplankton Dynamics Of A Temperate Coastal Plain Estuary, Robert Triau Ray
Dissertations, Theses, and Masters Projects
No abstract provided.
Ua35/11 Student Honors Research Bulletin, Wku Honors Program
Ua35/11 Student Honors Research Bulletin, Wku Honors Program
WKU Administration Documents
The WKU Student Honors Research Bulletin is dedicated to scholarly involvement and student research. These papers are representative of work done by students from throughout the university.
- Padilla, Anne. First and Second Language Acquisition: A Comparison
- Scott, Angela. Salted and Unsalted Snacks: Taste Preferences of Second Grade Students in a Rural Area School
- Fuqua, Nancy. Acceptance by High School Students of Muffins Containing Supplemental Soy Polysaccharides
- Mans, Glee. Preference Levels of High School Freshmen for Four Cheese Food Products
- Denney, Pam. Consumer Acceptance of UHT Choclate Lowfat Milk
- Harris, Carla. Jacques-Louis David: Raphael of the Sansculottes
- Vaughn, James. Corporate Reorganization …
Research Note: Getting Graphic: Computer Graphics In Biochemistry, Wilmon B. Chipman
Research Note: Getting Graphic: Computer Graphics In Biochemistry, Wilmon B. Chipman
Bridgewater Review
No abstract provided.
The Prairie Naturalist Volume 17, No. 4. December 1985
The Prairie Naturalist Volume 17, No. 4. December 1985
The Prairie Naturalist
Paul B. Kannowski, Editor
Nikki R. Seabloom, Assistant Editor
Douglas H. Johnson, Book Review Editor
TABLE OF CONTENTS
MOVEMENTS AND HABITAT USE OF MALE RUFFED GROUSE IN THE TURTLE MOUNTAINS, NORTH DAKOTA ▪ E. L. Bakke and J. W. Schulz
THE BIRDS OF KONZA PRAIRIE RESEARCH NATURAL AREA, KANSAS ▪ J. L. Zimmerman
VASCULAR FLORA OF RANSOM, RICHLAND, AND SARGENT COUNTIES, NORTH DAKOTA ▪ G. J. Seder and W. T. Barker
NORTH DAKOTA FLEAS. IX. SIPHONAPTERANS OF MAMMALS IN SOUTHWESTERN NORTH DAKOTA ▪ O. R. Larson, M. G. McKenna, and N. R. Fellows
NOTES
Breakup and Sibling Dispersal of Two …
Oyster Spatfall In Virginia Rivers: 1985 Annual Survey, James Whitcomb
Oyster Spatfall In Virginia Rivers: 1985 Annual Survey, James Whitcomb
Reports
The Virginia Institute of Marine Science (VIMS) conducts weekly surveys from June through early October to obtain oyster spatfall information. Spat counts are made on oyster shells strung qn wire and suspended from stakes on public and private beds. The number of spat on shells is counted each week of the spawning season to determine the potential of a particular area for receiving a strike and to predict the most likely period the strikes will occur.
Baltimore Harbor And Channels Aquatic Benthos Investigations : Final Technical Report, Robert J. Diaz, Linda C. Schaffner, Robert J. Byrne, Robert A. Gammisch
Baltimore Harbor And Channels Aquatic Benthos Investigations : Final Technical Report, Robert J. Diaz, Linda C. Schaffner, Robert J. Byrne, Robert A. Gammisch
Reports
This report describes work performed by the Virginia Institute of Marine Science, School of Marine Science of the College of William and Mary, Gloucester Point, VA, to document the existing preoperational conditions at four locations in the Chesapeake Bay selected as possible dredged material disposal areas for the deepening of the Baltimore Channel. The work was sponsored by the Baltimore District Corps of Engineers.
The objectives of this work were at each of the four potential disposal sites:
1 -document the surface (0-15 em) sediment conditions spatially and temporally
2 - document macrobenthic communities spatially and temporally.
3 - empty …
Multiple Trophic Levels In Soft-Bottom Communities, John A. Commito, William G. Ambrose Jr.
Multiple Trophic Levels In Soft-Bottom Communities, John A. Commito, William G. Ambrose Jr.
Environmental Studies Faculty Publications
In order to assess the general applicability of recent field experiments with predatory infauna, we searched the literature and found 48 well-documented cases of infaunal consumption by such predators. In 63 % of the cases detailed enough to make a determination, the predators ate other predators. Multiple trophic levels within the infauna are probably a common feature of many soft-bottom communities.
Behavior And Ecological Interactions Of Larval Odonata, Clay L. Pierce, Philip H. Crowley, Dan M. Johnson
Behavior And Ecological Interactions Of Larval Odonata, Clay L. Pierce, Philip H. Crowley, Dan M. Johnson
Clay L. Pierce
Enallagma aspersum and E. traviatum (Odonata: Coenagrionidae) are the most abundant larval odonates in Bays Mountain Park (Sullivan County, Tennessee, USA), although their spatial distributions are essentially nonoverlapping. E. traviatum coexists with insectivorous fish in a small lake, whereas E. aspersum is restricted to a small fishless pond nearby. Behavioral observations revealed that E. aspersum larvae were more active than E. traviatum, and tended to occupy more conspicuous positions. E. aspersum also engaged in more confrontations than E. traviatum, especially at higher density. In laboratorye xperimentsw ith juvenile bluegills( Lepomism acrochirusa) s predators,E . aspersum larvae were more vulnerable to …
The Gamut: A Journal Of Ideas And Information, No. 16, Fall 1985, Cleveland State University
The Gamut: A Journal Of Ideas And Information, No. 16, Fall 1985, Cleveland State University
The Gamut Archives
CONTENTS OF ISSUE NO. 16, FALL, 1985
Klaus-Peter Hinze: Hitler and the Beetle, 3
One of America's favorite automobiles, the Volkswagen "bug," began as a pet project of the Nazi regime.
Ron Haybron: Packaging the Seasons, 12
Calendars of different societies have ingeniously struggled with the incompatible cycles of sun, earth, and moon.
Nancy McAfee: Philip Johnson's Play House, 27
Cleveland's new theater complex is a major example of Post-Modern architecture.
Carsten Ahrens: Recollections of a Dragonfly Man, 39
A naturalist's lifelong pursuit of the fascinating famUy of the Odonates.
Wojbor Woyczynski: Of Men and …
Comparison Of An Improved Plankton Sampler To The Standard Conical Plankton Net, Ronald S. Schmidt
Comparison Of An Improved Plankton Sampler To The Standard Conical Plankton Net, Ronald S. Schmidt
OES Theses and Dissertations
A comparison of field and tank tests between the standard conical plankton net and an improved version of a plankton sampler is presented. The improved sampler was shown to filter larger quantities of water than the standard net without having the filtration efficiency reduced below 85%. The improved sampler was also shown to capture an increased number of plankton per volume sampled, as a result of eliminating increased avoidance activity by zooplankton. It was not shown that. the improved sampler capture either larger maximum sizes of zooplankton or additional species.
Microbial Characteristics Of An Industrial Mixed Liquor After Exposure To Phenolic Compounds, Patricia L. Boyle
Microbial Characteristics Of An Industrial Mixed Liquor After Exposure To Phenolic Compounds, Patricia L. Boyle
Theses
The microbial characteristics of a mixed population from the Passaic Valley Sewerage Commissioners (PVSC) Wastewater Treatment Plant in Newark were examined. This plant handles about 250 million gallons per day of mixed sewerage, with a large industrial component. The microbial species were characterized using standard plating techniques, morphology, microscopic observation, and biochemical tests. These characteristics were determined for the fresh liquor, and after successive batch exposure to phenol (100 ppm) and 2-chlorophenol (20 ppm). Predator/prey, gram positive to gram negative bacteria ratios, and the fungi and protozoan populations were also determined. These results were compared with those previously obtained using …
Animal Damage Control And The Endangered Species Act, Warren T. Parker
Animal Damage Control And The Endangered Species Act, Warren T. Parker
Wildlife Damage Management Conference
The premise of the Endangered Species Act is that all wildlife are valuable natural resources and the extinction of species in the name of progress must be halted. To achieve this end, Congress requires all Federal agencies to consult with the Fish and Wildlife Service when any of their programs or projects affect a listed endangered or threatened species. Problems of special interest to this conference are those that project an endangered or threatened species in direct conflict with man.
State Funded Wildlife Damage Programs: The Wisconsin Experience, Scott E. Hygnstrom, Scott R. Craven
State Funded Wildlife Damage Programs: The Wisconsin Experience, Scott E. Hygnstrom, Scott R. Craven
Wildlife Damage Management Conference
Wisconsin has a long tradition of involvement with wildlife damage and wildlife damage programs. It is one of less than a dozen states that presently has a program for wildlife damage. From 1931 to 1980, Wisconsin paid landowners for damage to crops caused by wildlife. Now the focus of Wisconsin's wildlife damage program is on damage control and prevention through appropriate abatement techniques and wildlife population control. This paper will detail Wisconsin's experience with these approaches and will offer insight into improving state funded wildlife damage programs.
Reformulated 4-Aminopyridine Baits Cost-Effectively Reduce Blackbird Damage To Ripening Cornfields, Jerome F. Besser, John W. De Grazio
Reformulated 4-Aminopyridine Baits Cost-Effectively Reduce Blackbird Damage To Ripening Cornfields, Jerome F. Besser, John W. De Grazio
Wildlife Damage Management Conference
In 1984 4-aminopyridine baits, stabilized with hydrochloric acid, were appraised in ripening cornfields being attacked by blackbirds on the Sand Lake National Wildlife Refuge, South Dakota. In 1982, it had been discovered that 4-aminopyridine, the active agent in commercial Avitrol® baits for crop protection rapidly vaporized at summer storage and field baiting temperatures.
In July, baiting lanes were created in 12 cornfields by destroying every 55th row. In August after a 3-day pretreatment period, fields were baited with Avitrol® FC Corn Chops-99 for a 2-week period when corn was most vulnerable to damage. Bait was applied from baiting …
An Investigation Of Techniques Used To Discourage Rebuilding Of Beaver Dams Demolished By Explosives, James M. Dyer, Charles E. Rowell
An Investigation Of Techniques Used To Discourage Rebuilding Of Beaver Dams Demolished By Explosives, James M. Dyer, Charles E. Rowell
Wildlife Damage Management Conference
One hundred seventeen beaver dams were partially or wholly demolished with explosives from April through August between 1982 and 1984. These dams were of two types; shallow water dams found in areas of flat terrain, and deep water dams found in major creek channels or in areas of hilly terrain. Following demolition, various treatments were applied to the dam sites to try to retard rebuilding. Our conclusions are that deep water dams can be removed more effectively than shallow water dams and that late summer removals were rebuilt less frequently than early and midsummer removals. Also, certain types of repellents …
Landowner Tolerance Of Beavers: Implications For Damage Management And Control, Ken G. Purdy, Daniel J. Decker, Richard A. Malecki, John C. Proud
Landowner Tolerance Of Beavers: Implications For Damage Management And Control, Ken G. Purdy, Daniel J. Decker, Richard A. Malecki, John C. Proud
Wildlife Damage Management Conference
Management of beaver (Castor canadensis) populations can be an effective way to create wetlands while at the same time producing a valued recreational and furbearer resource. Optimizing beaver populations for such a dual objective, however, requires careful integration of biological and sociological considerations in management planning. Knowledge of beaver population dynamics by itself is insufficient for sound management; human tolerance data also must be included in management decisions to reduce the potential of encountering problems that could impede the attainment of beaver-wetlands management objectives. Expansion of beaver into new areas often may be constrained by managers' perceptions of …
Economic And Environmental Impacts Of Beavers In North Carolina, David K. Woodward, Robert B. Hazel, Brian P. Gaffney
Economic And Environmental Impacts Of Beavers In North Carolina, David K. Woodward, Robert B. Hazel, Brian P. Gaffney
Wildlife Damage Management Conference
In 1984, a postal survey of landowners and managers was conducted in North Carolina concerning the presence of beavers (Castor canadensis) on their property. Major objectives of the survey were to determine: (1) current distribution and relative abundance of beavers in North Carolina, (2) the economic and environmental impacts from an apparently increasing beaver population, and (3) landowner attitudes toward these increasing populations. Of the 1,069 questionnaires returned, data was compiled from 456 landowners (43 percent) who confirmed the presence of beaver activity on their property during 1983. A significant increase in beaver numbers and distribution has occurred …
Comparisons Of Strychnine And Zinc Phosphide In Prairie Dog Control, H. Todd Holbrook, Robert M. Timm
Comparisons Of Strychnine And Zinc Phosphide In Prairie Dog Control, H. Todd Holbrook, Robert M. Timm
Wildlife Damage Management Conference
Efficacy and safety are primary considerations in registration and use of toxicants for vertebrate pest control. Strychnine (0.5%) and zinc phosphide (2%) are currently registered by EPA for prairie dog control, but continued registration is uncertain. Two percent zinc phosphide bait has been suspected of producing lower and more erratic results than strychnine bait. In our study in western Nebraska in fall 1984, indices based on changes in burrow activity showed no difference in efficacy (P =0.66) or variability (P= 0.7) of control for strychnine and zinc phosphide, however neither toxicant consistently gave effective control or black-tailed prairie dogs. Costs …
Estimating Cost-Effectiveness Of Controlling Animal Damage To Conifer Seedlings, David S. Decalesta
Estimating Cost-Effectiveness Of Controlling Animal Damage To Conifer Seedlings, David S. Decalesta
Wildlife Damage Management Conference
A model for determining the benefit-cost ratio of controlling damage by vertebrate pests to conifer seedlings requires knowledge of the amount, distribution, and duration of animal damage, reduction in damage associated with control, costs of control, methodology and value of trees at harvest. Because control costs occurring in the present must be compared with savings recovered decades later in the future, the model incorporates procedures for discounting or adjusting future monetary benefits into present net worth valuations. The model allows forest managers to evaluate a wide range of damage costs and savings accruing from use of various control techniques. The …
The Whooping Crane Cross-Fostering Experiment: The Role Of Animal Damage Control, Roderick C. Drewien, Stephen H. Bouffard, Desmond D. Call, Richard A. Wonacott
The Whooping Crane Cross-Fostering Experiment: The Role Of Animal Damage Control, Roderick C. Drewien, Stephen H. Bouffard, Desmond D. Call, Richard A. Wonacott
Wildlife Damage Management Conference
Predator losses of endangered species in reintroduction programs are unacceptable because of the scarcity of the species and the major commitment of staff time and funds. When the whooping crane (Grus americana) cross-fostering experiment (experiment) at Grays Lake National Wildlife Refuge (Grays Lake), Idaho was proposed in 1972, animal damage control (ADC) was considered unnecessary. Sandhill crane (G. canadensis tabida) nest success was high and coyotes (Canis latrans) and red foxes (Vulpes vulpes) were uncommon. Canids increased by the mid-1970's destroying whooping crane eggs and chicks. An ADC program initiated in 1976 …
Dispersal Of A Heron-Egret Rookery, Douglas I. Hall
Dispersal Of A Heron-Egret Rookery, Douglas I. Hall
Wildlife Damage Management Conference
A rookery composed of an estimated 10,000 herons and egrets (family: Ardeidae) located in Van Buren, Crawford County, Arkansas was successfully dispersed in the Spring of 1983. A diversified scaring program was planned and initiated prior to the onset of courtship display and nest building. The roost relocation was subsequently followed by habitat alteration procedures to make the 5-acre stand of primarily Eastern redcedar (Juniperus virginiana) unattractive as a future roosting site. Although no nesting occurred at the site in 1983, the lack of an early scaring program in the Spring of 1984 resulted in the uncleared …
Management Of Nuisance Canada Goose Flocks, Michael R. Conover
Management Of Nuisance Canada Goose Flocks, Michael R. Conover
Wildlife Damage Management Conference
In recent years, non-migratory flocks of Canada Geese have become established in some urban and suburban areas. These birds often become a serious nuisance when they litter backyards, parks and beaches with fecal material, creating a potential health hazard especially for young children. To determine the scope of the problem, I surveyed golf course managers in the eastern U.S. to see if they were experiencing a problem with geese. This survey showed that this problem was widespread, occurring throughout the eastern U.S., and appeared to be increasing. Twenty-six percent of all respondents reported nuisance goose problems and were willing to …
Dispersing Blackbird-Starling Roosts With Helium-Filled Balloons, Donald F. Mott
Dispersing Blackbird-Starling Roosts With Helium-Filled Balloons, Donald F. Mott
Wildlife Damage Management Conference
Large (120 cm diameter) helium-filled balloons (2-10 per ha of roost) tethered about 8 m above the vegetation were effective in dispersing blackbirds and starlings from roosting sites. Bird population estimates before, during, and after balloon exposure showed that the balloons frightened the birds and caused most of them to abandon the roost. Roosting bird numbers at each of 5 test roost sites (0.3 to 1.7 ha) were reduced an average of 82% (min-max 47-100%) during 3 to 4 evenings of balloon exposure. Winds >16 km/h during the study made it difficult to keep the balloons aloft and not entangled …
Management Implications Derived From Bird Damage Assessments In North Dakota Sunflower, Joseph L. Guarino, John L. Cummings
Management Implications Derived From Bird Damage Assessments In North Dakota Sunflower, Joseph L. Guarino, John L. Cummings
Wildlife Damage Management Conference
The most recent estimate of blackbird damage to ripening sunflower (Helianthus annuus) in North Dakota in 1980 exceeded $6 million. Although less than 5% of the sunflower fields in the state received greater than 10% damage in each of four past survey years, as much as 50% of the total state-wide damage occurred in these fields. This loss can be combated with cost-effective control. Successful control requires timely action when blackbirds are in large concentrations. Frightening blackbirds from fields early in the damage season disperses damage and this can result in compensatory growth by sunflower, whereby yields at …
Preparation And Analysis Of Alternative 4-Ap Baits For Blackbirds, J. E. Davis, D. J. Cunningham, J. L. Cummings
Preparation And Analysis Of Alternative 4-Ap Baits For Blackbirds, J. E. Davis, D. J. Cunningham, J. L. Cummings
Wildlife Damage Management Conference
Red-winged blackbird (Agelaius phoeniceus) acceptance of corn as a bait for use in ripening sunflower has been questioned. This study demonstrated that sunflower meats, sunflower achenes, and pearled barley all have potential as alternative bait carriers for 4-AP. Each can be treated with 4-AP so that individual bait particles carry dosages equivalent to those of cracked corn in the registered product, Avitrol FC Corn Chops 99S. Treated baits produced a distress response in redwings in times ranging from 21.7 min (sunflower meats) to 64.5 min (sunflower achenes). The time to distress elicited by sunflower meats coated with 4-AP …
The Effects Of Canada Goose Grazing On Winter Wheat: An Experimental Approach, Hubert A. Allen Jr., David Sammons, Russell Brinsfield, Roland Limpert
The Effects Of Canada Goose Grazing On Winter Wheat: An Experimental Approach, Hubert A. Allen Jr., David Sammons, Russell Brinsfield, Roland Limpert
Wildlife Damage Management Conference
The effects of grazing winter wheat (Triticum aestivum) by Canada geese (Branta canadensis) was assessed in 3 fields during 2 years of experimentation at the Wye Research and Education Center, Queenstown, Maryland. Randomly placed wire enclosures prevented goose grazing on 11.1 m sq. control plots. Grazed plots were marked in each field soon after the geese migrated in March. Grazed plots had consistently lower yields than ungrazed plots with mean differences ranging from 0-13%. The differences were related to the intensity of grazing. Other parameters, including mean weight per seed, mean number of seeds per spike, …
Removal Of Nesting Starlings With Drc-1339, Douglas I. Hall
Removal Of Nesting Starlings With Drc-1339, Douglas I. Hall
Wildlife Damage Management Conference
DRC-1339-treated crickets (Gryllus sp.) were utilized in an attempt to remove starlings (Sturnus vulgaris) nesting and rearing young in the aircraft hangars at the Little Rock Air Center, Little Rock, Pulaski County, Arkansas. Bait ratio of 1 treated to 5 untreated crickets was used. They were placed under airport night lights where foraging birds naturally gathered to feed on insects attracted to these lights. Adult starlings consumed the crickets as well as fed them to their young. Lethal control was achieved on both age classes of bird. Field test results show promise for the development of …