Digital Commons Network^™

Isopoda (Crustacea: Isopoda: Microcharon, Jaera, Proasellus) And Other Fauna In Hypogean Waters Of Southern Cyprus, Boris Sket

International Journal of Speleology

Springs and wells in SW and S part of Cyprus were briefly surveyed. Chlorinity was 0.1 - 0.8 p.p.t. Some isopods were found in collecting galleries of springs and in wells in calcarenites and in gravel deposits. These were Proasellus coxalis ssp. with some depigmented specimens, the probably stygobitic P. c. nanus ssp. n., poorly pigmented Jaera italica, and Microcharon luciae n. sp.; they were accompanied by the stygobitic amphipod Bogidiella cypria, by Turbellaria (Tricladida), by Copepoda (Cyclopoida), and rarely by some other animals (Pisidium sp., Oligochaeta). Only slightly depigmented Turbellaria Tricladida (cf. Dugesia sp.) occur in …

Two New Niphargus Species (Amphipoda) From Caves In Yugoslavia, Gordan Karaman, Boris Sket

International Journal of Speleology

Niphargus numerus sp. n. from the Čavlinska pećina near Obrovac (Dalmatia) and N. factor sp. n. from Vjetrenica (Hercegovina) are described. Both new species from Yugoslav caves belong to the N. transitivus aggregate of species.

Ultrastructure Des Sensilles Cylindriques, Mécanorécepteurs D'Un Crustacé Mysidacé Souterrain, Yves Crouau

International Journal of Speleology

The ultrastructural features of a new chordotonal sensillum in a cavernicolous Mysidacea is described. That sensillum and the other mechanoreceptor sensilla of the same Mysidacea are compared. 9 + 0 cilia show ultrastructural features which previously allowed us to establish a hypothesis with respect to the mode of functioning of chordotonal sensilla. That sensillum shows a pore at the tip of its external receptor.

Laboratory Studies Of Predatory Behaviour In Two Subspecies Of The Carabid Cave Beetle: Neaphaenops Tellkampfi, David M. Griffith

International Journal of Speleology

Comparative studies on the foraging behaviour of Neaphaenops tellkampfi tellkampfi and N. t. meridionalis demonstrated adaptation to different environments. The southern subspecies N. t. meridionalis, which is found in wet muddy caves where cave cricket eggs are unlikely prey, did not locate buried cricket eggs and dug fewer and less accurate holes in the lab than the nominate subspecies. N. t. tellkampfi, which reaches high densities in sandy deep cave environments where cricket eggs are the only viable prey, gained significantly greater weight than meridionalis when presented buried cricket eggs as prey. There was no difference with respect …

Secondary Sympatric Occurrence Of Sibling Species Of Subterranean Shrimps In The Karst, M. Cobolli Sbordoni, M. Mattoccia, G. La Rosa, E. De Matthaeis, V. Sbordoni

International Journal of Speleology

Allozyme variation at 32 gene loci was studied in cave dwelling shrimps of the genus Troglocaris (fam. Atyidae). Populations were collected from several caves and wells belonging to different drainage systems in the Karst areas of NE Italy. Results suggest the existence of two sympatric, genetically distinct, biological species (provisionally indicated as species A and B in the T. anophthalmus complex) in the samples collected at the Duino Well, Sagrado and Comarie caves (Nei’s `D= 0.209). Samples from Gradisca and Aurisina are represented by only one (A) or the other (B) of the two species, respectively. Two remaining eastern populations …

Analysis And Numerical Simulation Of The Ground Water System At The Bonneville Navigation Lock Site, Oregon, Dirk Baron

Dissertations and Theses

As part of the new navigation lock for Bonneville Dam a new water source for the Bonneville Fish Hatchery must be supplied. The hatchery is located on the Oregon side of the Columbia River downstream of the dam. It requires large quantities of water free from chemical and biological contamination. In addition, the water has to be in a narrow temperature range. Currently the fish hatchery receives its water from a well field that is located on the alluvial terrace downstream of Bonneville Dam. The well field lies in the proposed approach channel for the new lock and has to …

Reproductive Biology Of Pinus Sylvestris L.: Seed Yield, Flower Phenology, The Response Of Young Seedlings To Ga 4/7, And Developmental Anatomy, Teresa K. Boes

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.

A Revision Of The North American Papillose Allocreadiidae (Digenea) With Independent Cladistic Analyses Of Larval And Adult Forms, Janine N. Caira

Bulletin of the University of Nebraska State Museum (1924–2023)

Adult specimens of all 19 North American species of papillose allocreadiids were examined. A description and figure is given for the adult of each species; details of the cirrus sacs are presented for most spesies for the first time. Descriptions were emended where necessary and judgments were made on synonymies. Scanning electron micrographs of the oral sucker of 10 species are presented as is a new key to the 19 species. A cladistic analysis was performed on the group based on adult characters. The analysis indicated that the group is monophyletic on the basis of the ventral papillae associated with …

Identification And Quantitation Of Volatile Amines In Marine Sediments, Chuen Mei Huang

Chemistry & Biochemistry Theses & Dissertations

Pore waters which were taken from sediments of the Chesapeake Bay were analyzed to determine the presence of volatile amines. A purge-and-trap technique was used to concentrate the amines. Then, following derivatization with heptaflourobutyric anhydride, the HFBA-amines were analyzed by gas chromatography with electron capture detection and with mass spectrometric detection. One secondary amine, diethylamine with a concentration of 0.3-0.6 uM, was found in a total of three pore water samples from cores collected on two different dates. A primary amine, sec-butylamine with a concentration of O. 05 AIM, was also found in one of these same samples. Another primary …

Wetland Study Of Southeastern Portage Township, Kalamazoo County, Michigan, Kevin M. Walsh

Masters Theses

Under the Clean Water Act, Congress passed legislation to maintain and restore the chemical, physical, and biological integrity of the water of the United States. The objective of this study is to determine if the wooded area located in Upjohn Company's Property in southeastern Portage Township, Portage, Michigan falls under the classification of a wetland.

This objective has been pursued through an examination of the hydrology of the area, the soil characteristics of the area, and the vegetation types and characteristics of the area. These parameters have been utilized following the guidelines outlined in the "Corps of Engineers Wetland Delineation …

Within The Hundredth Meridian: Western States And Their River Basins In A Time Of Transition, John M. Volkman, Kai N. Lee

Boundaries and Water: Allocation and Use of a Shared Resource (Summer Conference, June 5-7)

29 pages.

Contains footnotes.

Interjurisdictional Relations Under Federal Water Quality Law: A Guide Through The Maze, Michael C. Blumm, Daniel Rohlf

Boundaries and Water: Allocation and Use of a Shared Resource (Summer Conference, June 5-7)

53 pages.

Contains references.

The Colorado River Compact: A Breeding Ground For International, National, And Interstate Controversies, John U. Carlson

Boundaries and Water: Allocation and Use of a Shared Resource (Summer Conference, June 5-7)

38 pages.

Contains references.

Interstate Allocation Of The Platte River, J. David Aiken

Boundaries and Water: Allocation and Use of a Shared Resource (Summer Conference, June 5-7)

27 pages.

Contains references.

A Laboratory Characterization Of Pulp And Paper Mill Solid Wastes For Potential Use As Hydraulic Barrier Material In Landfill Covers, Carleton Van Maltby

Masters Theses

Fifteen sludges from wastewater treatment systems of pulp and paper mills that encompass major production categories, and eight fly ashes from mill boilers incinerating wood waste, coal, or their combination were characterized for their potential suitability as hydraulic barrier material. Hydraulic conductivity was observed to range over four orders of magnitude for the materials tested.

Root Exploitation Of Fertile Soil Microsites, Robert B. Jackson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Root exploitation of enriched soil microsites was examined for the tussock grasses Agropyron desertorum and Agropyron spicatum and the shrub Artemisia tridentata. Two mechanisms of exploitation of the microsites were examined: root proliferation and changes in nutrient uptake capacity. One day after nutrient solution was applied to small soil patches, the mean relative growth rate of Agropyron desertorum roots in enriched patches was two to four times greater than for roots of the same plants in soil patches treated with distilled water. This rapid and striking root proliferation occurred in response to N-P-K enrichment as well as to P or …

Habitat Use And Diet Analysis Of Breeding Common Barn Owls In Western Nebraska, Joseph A. Gubanyi M.S.

School of Natural Resources: Dissertations, Theses, and Student Research

I studied barn owl (Tyto alba) breeding biology in western Nebraska 1984-1986. I had greatest success capturing males (56% success) at night using trap doors at nest sites and females (91 % success) using hoop nets at nest sites during the day. Barn owls removed 16 of 23 tail-mounted radios. Eight birds were radio-tracked for 7-14.5 hours. The mean foraging range was 198 ha (32- 299 ha, n = 8) with < 1 % overlap among birds from adjacent nest sites. Field-tested telemetry error was high (mean displacements of radio-locations for 2 birds were 208 and 241 m). I found no relationship between percent cover in foraging habitat and reproductive success. I identified 10,140 prey items from 15 nest sites and found both annual and seasonal variation in barn owl diets. Microtus ochrogaster occurred most frequently (32.7%) and increased in the diet from 17.6 to 27.2 to 43.5% 1984-1986. M. ochrogaster and Perognathus hispidus annual frequencies were …

Water Quality In Southeastern Minnesota Streams: Observations Along A Gradient Of Land Use And Geology, Nels H. Troelstrup Jr., James A. Perry

Journal of the Minnesota Academy of Science

ABSTRACT-Surface water quality in southeastern Minnesota's driftless area exhibits subregional and local spatial patterns which are highly correlated with subsurface geology and land-use practices. Some variables appear to respond on subregional or watershed scales. Nitrate, specific conductance, alkalinity, and surface water atrazine concentrations were lower in streams originating from the Prairie Du Chien or Jordan sandstone ~quifers of easte:n Fillmore and Houston Counties than those originating from the Galena limestone aquifer m west-central Fillmore County. In addition, the numbers of pollution intolerant and functionally specialized invertebrates in the benthic community were higher in the eastern streams. Gross primary production on …

Origin And Developmental History Of Minnesota Lakes, H. E. Wright Jr.

Journal of the Minnesota Academy of Science

ABSTRACT-Most lakes in Minnesota owe their origin directly or indirectly to glacial deposition or erosion 10,000 to 20,000 years ago. The lakes' shapes have since been modified by waves and currents near the shores and by the deposition of sediment off-shore-principally the sediment produced by growth of algae and other organisms. This sediment is a receptacle for pollen grains blown into the lake from the surrounding vegetation, and the stratigraphic succession of pollen grains records the postglacial vegetational and thus climatic history of the area. The sediment also preserves the fossils of microorganisms that reveal by their chemical composition the …

Nitrogen Management Related To Groundwater Quality In Minnesota, James L. Anderson, Gary L. Malzer, Gyles W. Randall, George W. Rehm

Journal of the Minnesota Academy of Science

ABSTRACT-Minnesota ranks fifth in overall fertilizer nitrogen (FN) use. Nitrogen is essential for crop production; however, there are concerns about this use relative to profitability and potential impacts on groundwater. There are many sources and sinks of nitrogen in ecosystems. The impact of agricultural management practices on groundwater requires that all sources and fates be considered before FN rates are determined. Research is underway to evaluate relationships between FN application for continuous com and movement of nitrate through soil profiles. Growers making N management decisions have to be able to evaluate the complex nature of N in the environment when …

Natural And Anthropogenic Forces Acting On A Forest Lake, M. C. Whiteside, M. B. King, K. Pulling

Journal of the Minnesota Academy of Science

ABS1RACT-Lak~ Itasca, Minnes~ta is located within one of the more popular state parks. Since the turn of the centmy, loggmg, fire protection, and development within the watershed have put modest pressures on the ecosystem. The presence of the University of Minnesota's Biological and Forestry Station on the lake has encouraged research in this region. Consequently there are numerous research reports and papers which are available _at the station's library. We examined data collected over the past 25 years to see if we could detect changes ~~ the lake. We detected no changes in phytoplankton, macrophyte, zooplankton, or zoobenthos com~urnues, but …

The Water Quality And Management Of Lakes In The Twin Cities Metropolitan Area, Richard A. Osgood, Gary L. Oberts

Journal of the Minnesota Academy of Science

ABSTRACT-We have detected a slow degradation in the water quality of Twin Cities Metropolitan Area lakes du~ to phospho_rus enrichment. While the water quality of the lakes does not appear to limit most uses, nmsances do exist. We have further discovered that commonly-used watershed treatments such as wetland diversions and ponding, are ineffective ~t reversing or completely mitigating the degradati~n following land development. Th_erefore, we are su~gestmg that lake managers reduce the external loading of phosphorus to the greatest ~oss_1ble extent; then, 1f further water quality improvements are necessary, that measures which treat eutroph1cat1on-related symptoms be considered for the long-term …

Susceptibility Of Northern Minnesota Lakes To Acid Deposition Impacts, Clifford J. Twaroski, J. David Thornton, Rick L. Strassman, Patrick L. Brezonik

Journal of the Minnesota Academy of Science

ABSTRACT-lake chemistry surveys indicate a large number of lakes with acid neutralizing capability (ANC) below 200 μeq/L occur in northeast Minnesota where shallow soils over bedrock and exposed rock outcrops predominate, and in moraine areas having rolling to steep topography in north-central and east-central Minnesota. In the Boundary Waters area, lake chemistry is strongly associated with bedrock geology. lakes with ANC <100 μeq/L are associated with granite, basalt, and gabbro formations, while lakes with ANC of 100- 200 μeq/L are associated with slate and greenstone formations. In the rest of the state where soils are deep, landform, soil type, and lake hydrology determine lake chemistry. Most low ANC lakes are found in terminal moraine areas. These lakes are generally small ( <40 ha in area), have limited groundwater inflow, and typically classed as precipitation-dominated seepage lakes. Higher ANC lakes (>400 μeq/L) are often associated with agricultural and residential land uses. Relationships found between ANC and bedrock geology, and between ANC and landform and soils, provided the basis for mapping the distribution of low ANC surface waters in Minnesota. …

The Legislative Commission On Minnesota Resources Involvement In Water Resource Programs, John Velin, George Orning

Journal of the Minnesota Academy of Science

ABSTRACT :--The Legislative Commission on Minnesota Resources (LCMR) has funded over $32 million worth of projects m three water-related areas since 1963. The authors describe the process the Commission uses to allocate money and summarize the general nature and accomplishments of many of the water projects.

Minimal Soil Disturbance Sowing In New South Wales And Its Relevance To Reducing Water Erosion In Western Australia, K J. Bligh

Resource management technical reports

During a study tour in New South Wales both inexpensive modifications to existing seeders and state of the art new mechanisms were investigated. Narrow-winged points can readily be fitted to existing tined seeders to immediately reduce water erosion in Western Australia. Press wheels may improve crop establishment, particularly with early sowing in this predominantly winter-rainfall region.

New Opportunities For Science Students In Agronomy, Wilbur Frye

Soil Science News and Views

High school students interested in science and looking for a field of study that will prepare them for a rewarding career will like the proposed new agronomy programs. The Agronomy Department at the University of Kentucky is preparing to offer undergraduate students three future-oriented options--Plant and Soil Management, Plant Science, and Soil Science. In designing these options, we tried to determine what agronomy students need to be prepared to do in a rapidly changing and highly competitive world of the 1990s.

Mule Deer Diets On A Chained And Seeded Central Utah Pinyon-Juniper Range, United States Department Of Agriculture, Forest Service

Forestry

Study of the seasonal use by mule deer of some native and introduced species on a pinyon-juniper restoration project showed that woody species made up the bulk of pellet samples, followed by forbs and grasses. Land managers are advised on seeding and grazing practices for enhancing big game habitats.

Effects Of Prescribed Fire On Biomass And Plant Succession In Western Aspen, United States Department Of Agriculture, Forest Service

Forestry

Biomass of grasses, forbs, shrubs, and aspen suckers was determined annually for three prescribed fires in aspen and aspen-conifer forests in southeastern Idaho and western Wyoming. Fires ranged from low to high severity and overstory mortality from 20 to 100 percent. Over 4 postburn years, production of grasses and forbs averaged 1.5 to 3.3 times that of controls. After 5 years, shrub biomass was 21 to 100 percent of preburn biomass. The varied patterns of seral vegetation and their management implications are discussed.

The Prey Of Common Barn Owls (Tyto Alba) In Dry Limestone Scrub Forest Of Southern Jamaica, Donald A. Mcfarlane, Kimball L. Garrett

WM Keck Science Faculty Papers

A collection of common barn-owl (Tyto alba Scopoli) pellets from caves on the Portland Ridge of Jamaica reveals that whereas introduced rodents constitute approximately 90% of the total prey, bats and birds are also frequent prey items. Of the bats, frugivorous species predominate with Ariteus flavescens Gray and Artibeus jamaicensis Leach accounting for the largest portion of the bat prey. Insectivorous bats are markedly under-represented with respect to the known diversity of insectivorous species in the habitat.

Maine Nonpoint Source Pollution Assessment Report, Bureau Of Water Quality Control

Maine Collection

Maine Nonpoint Source Pollution Assessment Report

Prepared by the Maine Department of Environmental Protection, Bureau of Water Quality Control, Augusta, Maine 1989.

Contents: Executive Summary / Introduction / Methodology / Statewide Water Quality Summary / State And Local Agency Programs for Control of Nonpoint Source Pollution / Process for Identification of Best Management Practices and Associated Standards / List of References / List of Figures / List of Tables