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Articles 1 - 30 of 48
Full-Text Articles in Life Sciences
The Prairie Naturalist Volume 23, No. 4. December 1991
The Prairie Naturalist Volume 23, No. 4. December 1991
The Prairie Naturalist
Paul B. Kannowski, Editor
Nikki R. Seabloom, Assistant Editor
Douglas H. Johnson, Book Review Editor
CONTENTS
KENTUCKY BLUEGRASS RESPONSE TO BURNING: INTERACTIONS BETWEEN FIRE AND SOIL MOISTURE ▪ G. W. Blankespoor and B. S. Bich
FORAGE PRODUCTION AND USE ON BIGHORN SHEEP WINTER RANGE
FOLLOWING SPRING BURNING IN GRASSLAND AND PONDEROSA PINE HABITATS ▪ T. G. Easterly and K. J. Jenkins
SHORT-TERM MORTALITY OF SMALLMOUTH BASS CAUGHT DURING A LIVE-RELEASE TOURNAMENT AT LAKE OAHE, SOUTH DAKOTA ▪ J. J. Jackson and D. W. Willis
CRAYFISH IN SAND LAKE NATIONAL WILDLIFE REFUGE ▪ C. D. Dieter
PIPING PLOVERS NEST ON DRY …
Hepatic Microsomal N-Hydroxylation Of Aniline And 4-Chloroaniline By Rainbow Trout (Onchorhyncus Mykiss), Steven P. Bradbury, J. M. Dady, A. D. Hoffman, M. M. Voit, D. L. Olson
Hepatic Microsomal N-Hydroxylation Of Aniline And 4-Chloroaniline By Rainbow Trout (Onchorhyncus Mykiss), Steven P. Bradbury, J. M. Dady, A. D. Hoffman, M. M. Voit, D. L. Olson
Steven P. Bradbury
N-Hydroxylation of aniline and 4-chloroaniline was quantified in rainbow trout microsomal preparations using h.p.l.c.-liquid scintillation methods. Radioactive phenylhydroxylamine and 4-chlorophenylhydroxylamine metabolites were identified by co-elution with non-labelled standards. The method provided resolution of metabolite standards, and quantification of both N-hydroxylated metabolites was achieved without derivatization. The maximum velocities at 25 degrees C were 33.8 +/- 1.40 and 22.0 +/- 0.98 pmol/min per mg for aniline and 4-chloroaniline N-hydroxylation, respectively. The Km values were 1.0 +/- 0.11 and 0.8 +/- 0.11 mM for aniline and 4-chloroaniline N-hydroxylation, respectively. These activities were not induced by treatment of the trout with Aroclor 1254 …
Remote Estimation Of The Diffuse Attenuation Coefficient In A Moderately Turbid Estuary, Richard P. Stumpf, Jonathan Pennock
Remote Estimation Of The Diffuse Attenuation Coefficient In A Moderately Turbid Estuary, Richard P. Stumpf, Jonathan Pennock
School of Marine Science and Ocean Engineering
Abstract
Solutions of the radiative transfer equation are used to derive relationships of water reflectance to the diffuse attenuation coefficient (K) in moderately turbid water (K > 0.5 m−1). Data sets collected from the NOAA AVHRR and in situ observations from five different dates confirm the appropriateness of these relationships, in particular the logistic equation. Values of K calculated from the reflectance data agree to within 60% of the observed values, although the reflectance derived using a more comprehensive aerosol correction is sensitive to chlorophyll concentrations greater than 50 μg L−1. Agreement between in situ and remote …Community Structure Of The Macrobenthos In Back Bay, Virginia, Michael F. Lane
Community Structure Of The Macrobenthos In Back Bay, Virginia, Michael F. Lane
Biological Sciences Theses & Dissertations
A study of the subtidal macrobenthos in Back Bay, Virginia was conducted to examine community structure in relation to sedimentary and water quality characteristics. Samples were collected in August and November of 1987 and February and May of 1988 at ten stations.
Three site groups and three temporal groups were identified by cluster analyses of species abundance. Species composition between site groups was relatively homogeneous and eight species accounted for most of the variation between site groups. A comparison of plots of the biological and physical data in discriminant space suggested that variations in the biological data between site groups …
The Prairie Naturalist Volume 23, No. 3. September 1991
The Prairie Naturalist Volume 23, No. 3. September 1991
The Prairie Naturalist
Paul B. Kannowski, Editor
Nikki R. Seabloom, Assistant Editor
Douglas H. Johnson, Book Review Editor
CONTENTS
ANTIPREDATOR BEHAVIOR OF MOUNTAIN PLOVER CHICKS ▪ T A. Sordahl
USING AERIAL MARKING FOR ASSESSING POPULATION DYNAMICS OF LATE SUMMER ROOSTING RED-WINGED BLACKBIRDS ▪ C. M. Linz, C. E. Knittle, J. L. Cummings, J. E. Davis, Jr. , D. L. Otis, and D. L. Bergman
DISPERSAL OF THE MEADOW JUMPING MOUSE IN NORTHERN KANSAS ▪ J. R. Choate, D. W. Moore, and J. K. Frey
DIET, HOME RANGE, MOVEMENTS, AND ACTIVITY PERIODS OF SWIFT FOX IN NEBRASKA ▪ T D. Hines and R. M. …
Biodepuration Of Polynuclear Aromatic Hydrocarbons From A Bivalve Mollusk, Mercenaria Mercenaria L, John T. Tanacredi Ph.D., Raul R. Cardenas
Biodepuration Of Polynuclear Aromatic Hydrocarbons From A Bivalve Mollusk, Mercenaria Mercenaria L, John T. Tanacredi Ph.D., Raul R. Cardenas
Faculty Works: CERCOM
Mercenaria mercenaria, exposed in vitro for 48 h to nine parent polynuclear aromatic hydrocarbons (PAHs) found in waste crankcase oil (WCCO) and analysed by multiparametric analysis over a 45- day depuration period in an activated carbon filtration aquaria system, did not depurate PAHs, but rather maintained them at detectable levels. Uptake of PAHs was shown to be directly related to clam weight. A cluster analysis of empirical results reaffirmed a biostabilization in PAH groupings in clam tissue over a 45-day depuration period and exhibited no evidence of a decreasing trend in total PAHs when subjected to ANOVA. Due to the …
The Prairie Naturalist Volume 23, No. 2. June 1991
The Prairie Naturalist Volume 23, No. 2. June 1991
The Prairie Naturalist
Paul B. Kannowski, Editor
Nikki R. Sea bloom, Assistant Editor
Douglas H. Johnson, Book Review Editor
CONTENTS
SMALLMOUTH BASS SIZE STRUCTURE AND CATCH RATES IN FIVE SOUTH DAKOTA LAKES AS DETERMINED FROM TWO SAMPLING GEARS ▪ C. L. Milewski and D. W. Willis
REPRODUCTION BY FISHES IN A HEADWATER STREAM FLOWING INTO GRAYROCKS RESERVOIR, WYOMING ▪ W. A. Hubert and D. T O’Shea
ENVENOMATION AND ACQUISITION OF CHEMICAL INFORMATION BY PRAIRIE RATTLESNAKES ▪ D. Chiszar, C. Hobika, H. M. Smith, and J. Vidaurri
MOVEMENTS AND HABITAT USE BY WILD TURKEY HENS WITH BROODS IN A GRASSLAND-WOODLAND MOSAIC IN THE NORTHERN …
Selecting And Developing Reliable Bore Sites In The Eastern Wheatbelt, Richard George
Selecting And Developing Reliable Bore Sites In The Eastern Wheatbelt, Richard George
Bulletins 4000 -
In the Western Australian wheatbelt, groundwater supplies contribute about 40 per cent of the on-farm livestock requirements and occasionally domestic water supply systems. The first part of this Bulletin comments on sites suitable for both high yielding bores and also those which yield water suitable for livestock. The second part outlines techniques for constructing and developing a bore. Throughout this Bulletin livestock quality water, for adult sheep, is defined as groundwater of less than 12,000 mg/L (or 850 grains per gallon) which has not been subject to localized pollution. For other livestock, the maximum salinities range from 2,600 mg/L for …
Appendix To The Final Report Of The Rfac. Statistical Summary Of Public Responses To Key Issues., Recreational Fishing Advisory Committee Western Australia.
Appendix To The Final Report Of The Rfac. Statistical Summary Of Public Responses To Key Issues., Recreational Fishing Advisory Committee Western Australia.
Fisheries management papers
This paper has been published as a separate appendix to the final report of the Recreational Fishing Advisory Committee, and should be read in conjunction with it, and the Committee's discussion paper ("Final report of the Recreational Fishing Advisory Committee - Fisheries Management Paper No. 41 1991). The key issues that were identified in the discussion paper came up under the following headings: 5.1 Environment 5.2 Resource Sharing 5.3 Access for Fishing 5.4 Research 5.5 Management rules 5.6 Enforcement 5.7 Charter fishing 5.8 Funding and licensing 5.9 Community consultation 5.10 Public awareness and community education.
Is Rainbow Trout Condition Influenced By Invertebrate-Drift Density?, Randall B. Filbert
Is Rainbow Trout Condition Influenced By Invertebrate-Drift Density?, Randall B. Filbert
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Users of the Instream Flow Incremental Methodology CTFIM) commonly assume that there is a positive linear relationship between available habitat (WUA) and stream fish biomass. However, several studies have shown a lack cf correlation between WUA and biomass. Such poor relationships may occur if other factors limit fish abundance. Food availability is a potentially important factor limiting abundance of stream fishes and can affect blomass by influencing fish condition (individual weight). I collected rainbow trout (Oncorhynchus mykiss) exposed to different levels of invertebrate-drift density to determine if condition was greater where food was more abundant. I also examined …
The Prairie Naturalist Volume 23, No. 1. March 1991
The Prairie Naturalist Volume 23, No. 1. March 1991
The Prairie Naturalist
Paul B. Kannowski, Editor
Nikki R. Seabloom, Assistant Editor
Douglas H. Johnson, Book Review Editor
CONTENTS
AGRICULTURAL LAND USE AND MOURNING DOVES IN EASTERN COLORADO: IMPLICATIONS FOR NESTING AND PRODUCTION IN THE GREAT PLAINS ▪ T E. Olson, C. E. Braun, and R. A. Ryder
DISTRIBUTION OF SANDHILL CRANES IN THE NORTH PLATTE RIVER VALLEY 1980 AND 1989 ▪ M. J. Folk and T. C. Tacha
NOCTURNAL BEHAVIOR OF SANDHILL CRANES ROOSTING IN THE PLATTE RIVER, NEBRASKA ▪ B. S. Norling, S. H. Anderson, and W A. Hubert
LEAD POISONING OF A MARBLED GODWIT ▪ L. N. Locke, M. R. …
Regulating Air Toxics In Rhode Island: Policy Vs. Technical Decisions, Julie A. Roque
Regulating Air Toxics In Rhode Island: Policy Vs. Technical Decisions, Julie A. Roque
RISK: Health, Safety & Environment (1990-2002)
Dr. Roqu6 recounts her work as a doctoral candidate at Brown in developing standards for the regulation of airborne carcinogens. Based in part on this experience, she argues that care needs be taken lest those who regulate Risk bury key policy decisions within a mass of often irrelevant technical details.
Oyster Spatfall In Virginia Waters: 1990 Annual Summary, Bruce J. Barber
Oyster Spatfall In Virginia Waters: 1990 Annual Summary, Bruce J. Barber
Reports
The Virginia Institute of Marine Science (VIMS) conducts surveys ofoyster spatfall (or "setting") in Virginia waters throughout the summer reproductive period. This survey provides an estimate of the potential of a particular area for receiving a "strike" or set of oysters on the bottom and helps define the timing of setting events. Information obtained from this effort is valuable to the Virginia Marine Resources Commission (VMRC) for its shell repletion program, and to private oyster growers, both of which are interested in maximizing the timing of shell planting. In addition, by maintaining a long-term data base, trends in spatfall throughout …
Status Of The Major Oyster Diseases In Virginia 1990 A Summary Of The Annual Monitoring Program, Eugene M. Burreson
Status Of The Major Oyster Diseases In Virginia 1990 A Summary Of The Annual Monitoring Program, Eugene M. Burreson
Reports
No abstract provided.
Tree Crops For Profit And Land Improvement, John Bartle
Tree Crops For Profit And Land Improvement, John Bartle
Journal of the Department of Agriculture, Western Australia, Series 4
Western Australian agriculture is deficient in good perennial species. The traditional segregation of agriculture and forestry has diverted attention from commercial wood producing trees as a potential perennial crop. Recently, scientists have made rapid progress in developing tree cropping systems suitable for extensive use in the wetter (more than 600 mm average annual rainfall) areas of the lower south-west. There is potential for a major industry based on fast-growing eucalypts for pulpwood. The foundations for this industry developed from work on agroforestry, forestry sharefarming and salinity control.
Wildlife Corridors In The Wheatbelt, Richard Hobbs, Denis Saunders
Wildlife Corridors In The Wheatbelt, Richard Hobbs, Denis Saunders
Journal of the Department of Agriculture, Western Australia, Series 4
Native vegetation in the Western Australian wheatbelt now persists mostly in small areas that remained uncleared for various reasons. (See 'Remnant vegetation on farms is a valuable resource' on page 43.) On their own, most of these remnant areas are difficult to manage, and too small to retain viable populations of many of the birds and other animals found in the wheatbelt. These patches of vegetation can be linked by wildlife corridors, which may increase the ability of the wildlife to move about and persist in the area
Revegetating Salt-Affected Land With Shrubs, Ed Barrett-Lennard, Fionnuala Frost, Steve Vlahos, Norm Richards
Revegetating Salt-Affected Land With Shrubs, Ed Barrett-Lennard, Fionnuala Frost, Steve Vlahos, Norm Richards
Journal of the Department of Agriculture, Western Australia, Series 4
The establishment of salt-tolerant shrubs such as saltbush and bluebush on salt-affected land reduces the risk of soil erosion, and can also fit into farm programmes as a profitable enterprise. Salt-tolerant shrubs can be used as forage for sheep in summer and autumn, when the availability of annual pastures is low or annual pastures are just beginning to emerge. This article describes three methods for establishing shrubs on salt-affected land and what affects shrub establishment.
Inhibition Of Alcohol Dehydrogenase Activity By Acetylenic And Allylic Alcohols: Concordance With In Vivo Electrophile Reactivity In Fish, Steven P. Bradbury, Glenn M. Christensen
Inhibition Of Alcohol Dehydrogenase Activity By Acetylenic And Allylic Alcohols: Concordance With In Vivo Electrophile Reactivity In Fish, Steven P. Bradbury, Glenn M. Christensen
Steven P. Bradbury
Acetylenic and al!ylic alcohols have been reported to be 20 to 5,000 times more acutely toxic to fathead minnows (Pimephales promelas) than would be expected from a narcosis-based mechanism of action. The greater-than-expected toxicity of these alcohols has been proposed to be a result of metabolic activation to the corresponding reactive a ,)3-unsaturated aldehydes or allene derivatives. Using purified horse liver and rainbow trout (Oncorhynchus mykiss) hepatic cytosol alcohol dehydrogenase (ADH) preparations, the propensity of a series of acetylenic and allylic alcohols to inhibit enzyme activity, in both the presence and the absence of reduced glutathione, was ascertained. Those alcohols …
Use Of Respiratory-Cardiovascular Responses Of Rainbow Trout (Oncorhynchus Mykiss) In Identifying Acute Toxicity Syndromes In Fish: Part 4. Central Nervous System Seizure Agents, Steven P. Bradbury, Richard W. Carlson, Gerald J. Niemi, Tala R. Henry
Use Of Respiratory-Cardiovascular Responses Of Rainbow Trout (Oncorhynchus Mykiss) In Identifying Acute Toxicity Syndromes In Fish: Part 4. Central Nervous System Seizure Agents, Steven P. Bradbury, Richard W. Carlson, Gerald J. Niemi, Tala R. Henry
Steven P. Bradbury
The respiratory-cardiovascular responses of spinally transected rainbow trout to acutely lethal concentrations of chlorpyrifos, cypermethrin, fenvalerate, endosulfan, endrin, and strychnine were examined. Common to all six toxicants, the most striking change in respiratory-cardiovascular parameters was an increased cough frequency. Ventilation frequency and volume dropped in strychnine-exposed trout, but both remained near predose levels (frequency) or elevated (volume) in the pyrethroid- and cyclodiene-exposed trout. In chlorpyrifos-intoxicated trout, ventilation frequency decreased while volume increased. Oxygen consumption remained near predose levels in the chlorpyrifos-, pyrethroid-, and strychnine-exposed trout, but increased dramatically in the cyclodiene-exposed trout. Arterial oxygen, carbon dioxide, and pH declined in …
Lignin Distribution In Thermomechanically Pulped Wood Fibers Via X-Ray Microanalysis, Douglas Stokke, Xuerong Wang
Lignin Distribution In Thermomechanically Pulped Wood Fibers Via X-Ray Microanalysis, Douglas Stokke, Xuerong Wang
Douglas D. Stokke
The three major framework organic constituents of the secondary xylem (wood) of trees are cellulose, hemicelluloses, and lignin. Lignin imparts a number of important physical properties to the woody cell wall. In addition, lignin serves as the "cement" which binds cells together, and is the material which must be softened, altered, or removed during pulping processes. The distribution of lignin within pulp cell walls is of importance with respect to use of the pulp fibers. In this study, x-ray analysis was used to investigate lignin distribution in thermomechanically pulped (i.e., pulped with heat and pressure, with no chemical treatment) aspen …
Prospects For Fisheries Development In West Africa, Steven K. Ireland
Prospects For Fisheries Development In West Africa, Steven K. Ireland
Theses and Major Papers
The production of food is a primary concern for the countries of Africa. Marine fisheries can contribute toward alleviating undernutrition and provide employment opportunities in developing countries. In West Africa there are substantial marine fisheries resources but there is a need for development and improved management of these resources. Fisheries development efforts have thus far achieved limited success in the region. However, there is considerable potential for increasing the contribution of fisheries to economic development if the problems of fisheries development can be overcome.
Malaysia And The Law Of The Sea, Mohd Fadzil Shuhaimi
Malaysia And The Law Of The Sea, Mohd Fadzil Shuhaimi
Theses and Major Papers
The new legal regime of the oceans has brought many changes in the Malacca Strait. The most recent one in the enactment of the Malaysian Exclusive Economic Zone Act 1984 as corollary to its proclamation on the Exclusive Economic Zone in 1980. A year later, the Fisheries Act 1985 was enacted by Malaysia as a result of increasing needs to address new issues in fisheries protection and management in the Malaysian fisheries waters. The conclusion of the 1982 United Nations Convention on the Law of the Sea, among other things, has improvised the concept of transit passage in the straits …
Mariculture Management For Pohnpei State, Federated States Of Micronesia, Kevin Brooks Foster
Mariculture Management For Pohnpei State, Federated States Of Micronesia, Kevin Brooks Foster
Theses and Major Papers
The Marine Resources Division of Pohnpei State, Federated States of Micronesia is currently engaged in development activities that include the establishment of family scale mariculture projects for community members of remote villages and outer islands. The goal of this undertaking is to supplement subsistence and income generation ventures for community members through the wise use and exploitation of the marine environment. These aims may be jeopardized unless a management plan is devised that reflects the customary marine resource practices as embraced by islanders from each community. The intent of this thesis projects is to devise a mariculture management model that …
Littoral And Limnetic Zooplankton Communities In Lake Mead, Nevada-Arizona, Usa, Patrick J. Sollberger, Larry J. Paulson
Littoral And Limnetic Zooplankton Communities In Lake Mead, Nevada-Arizona, Usa, Patrick J. Sollberger, Larry J. Paulson
Publications (WR)
Zooplankton were collected from adjacent littoral and limnetic sites in Lake Mead, Nevada-Arizona, USA. Limnetic species dominated both littoral and limnetic zooplankton communities; littoral species rarely exceeded 2% of monthly total zooplankton densities. Low species richness of littoral taxa and high similarity in species composition between littoral and limnetic habitats appeared to result from uniform horizontal physical and chemical environments, due to horizontal mixing, and from the absence aquatic macrophytes.
Significant differences in spatial distribution occurred in phytoplankton biomass, total zooplankton density, and fish "abundances; highest concentrations of these factors occurred nearest an inflow high in nutrients and progressively declined …
Assessment Of Organic And Metal Contaminants In Lower Back Bay And Upper Currituck Sound, Kate Benkert
Assessment Of Organic And Metal Contaminants In Lower Back Bay And Upper Currituck Sound, Kate Benkert
V. Poster Abstracts
Studies were conducted at Mackay Island National Wildlife Refuge in 1988 and 1989 to provide baseline data for an assessment of organic chemicals and metal contaminants in the aquatic ecosystem. Longnose gar, gizzard shad, snapping turtles, common rangia clams and sediments were collected from sites in lower Back Bay and upper Currituck Sound for contaminant analyses.
Composite sediment samples were analyzed for the presence of metals, organochlorine pesticides and polycyclic aromatic hydrocarbons (PAHs). Organochlorine pesticides were not detected in the sediments. Various PAH compounds were detected in the sediments, although at trace concentrations which just exceeded the analytical detection limit …
Environmental Education: A Chance For The Future, Ben Mathias
Environmental Education: A Chance For The Future, Ben Mathias
V. Poster Abstracts
The U.S. Fish and Wildlife Service is committed to providing environmental education opportunities for the Nation's student body. Local, regional and national educators are invited to investigate and utilize the resources of Back Bay National Wildlife Refuge with their colleagues and students. Teacher workshops at the Refuge provide orientation to Refuge lands, outdoor classroom sites, trails, interpretive facilities and equipment, and potential field activities. Refuge staff members are available to assist with: • Preliminary planning • Group scheduling • Library research • Workshop registration • Trip logistics and • On-site group orientation. Most classroom sites, associated trails/boardwalks, and Visitor Contact …
Predation Risk And The Importance Of Cover For Juvenile Rainbow Trout In Lentic Systems, R. A. Tabor, Wayne A. Wurtsbaugh
Predation Risk And The Importance Of Cover For Juvenile Rainbow Trout In Lentic Systems, R. A. Tabor, Wayne A. Wurtsbaugh
Watershed Sciences Faculty Publications
Juvenile rainbow trout Oncorhynchus mykiss stocked in midelevation reservoirs in Utah inhabit shallow nearshore areas and are vulnerable to predation from piscivorous fish and birds. We determined the use and importance of nearshore habitats by (1) measuring habitat selection by, prey availability to, and feeding of juvenile rainbow trout in two reservoirs with populations of predators, and (2) measuring survival and growth rates in the presence and absence of cover in a pond experiment where adult brown trout Salmo trutta were predators. In the reservoirs juvenile rainbow trout (60–120 mm standard length) were abundant in complex inshore habitats but avoided …
Land Capability Study For Horticulture In The Swan Valley, J M. Campbell-Clause, Geoff Allan Moore
Land Capability Study For Horticulture In The Swan Valley, J M. Campbell-Clause, Geoff Allan Moore
Land resources series
The Swan Valley is an important agricultural, recreational, tourist and heritage area in which there are a number of competing land uses because of its location close to Perth. The traditional agricultural use, mainly centred around the viticulture industry, has to compete with tourist development, urban encroachment, hobby farms and clay extraction. The major objective of this report was to identify any areas of prime horticultural land which should be retained for that purpose. A land capability study was done using the existing soil series map of the Swan Valley (Pym 1955), which covers most of the Swan Valley Policy …
Planting Trees To Control Salinity, Nick Schofield, Phil Scott
Planting Trees To Control Salinity, Nick Schofield, Phil Scott
Journal of the Department of Agriculture, Western Australia, Series 4
Dense tree plantings covering at least 30 per cent of cleared land can lower groundwater levels by two metres or more in 10 years from the time of planting. This sizeable drop can be expected at sites receiving 700 to 800 mm of rain a year. Research by the Water Authority of Western Australia shows the most promising strategy when using trees is to put dense plantings on the discharge zone and on lower to midslopes. This strategy is successful where groundwaters contain less than 30,000 milligrams per litre total soluble salts (TSS).
This article discusses research in the 450 …
The Greening Of Australia, Martine Scheltema
The Greening Of Australia, Martine Scheltema
Journal of the Department of Agriculture, Western Australia, Series 4
Many urban Australians have little understanding of the problems of land degradation because it's an extremely slow process that doesn 't directly influence their day-to-day lives. Understandably, they would have trouble relating to sub-soil compaction, waterlogging, increased soil acidity and salinity. They also have trouble comprehending why fencing according to soil type is an important management tool for farmers, or what role contour banks, drainage systems, the addition of gypsum and planting trees have in reversing land degradation. But given that tree loss "has been at the core of almost every aspect of land degradation in Australia ", and that …