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Articles 43441 - 43470 of 52730

Full-Text Articles in Physical Sciences and Mathematics

Effects Of Sand-Mining On Benthic Communities And Resource Value : Thimble Shoal, Lower Chesapeake Bay, Linda C. Schaffner, Michele A. Horvath, Carl H. Hobbs Iii Jan 1996

Effects Of Sand-Mining On Benthic Communities And Resource Value : Thimble Shoal, Lower Chesapeake Bay, Linda C. Schaffner, Michele A. Horvath, Carl H. Hobbs Iii

Reports

In August 1990 the City of Hampton placed approximately 276,000 cubic yards of sand from a designated borrow site on Thimble Shoal onto Buck:roe Beach for beach restoration. The Buck:roe reserve identified by Kimball et al. (1989) contains large quantities of beach quality material and is located less then 2.5 km offshore of Buck:roe Beach. In early 1989 a small section (330 m by 240 m) located in 5 m of water was delineated and permitted for dredging. This project represents the first instance of permitted, sand-mining activities for beach nourishment in the lower bay. Although the impacts of the …


The Study Of The Resistance And Stability Of Vegetation Ecosystem Plant Groupings In Flood Control Channels: Vol. 1, William Rahmeyer, David Werth Jan 1996

The Study Of The Resistance And Stability Of Vegetation Ecosystem Plant Groupings In Flood Control Channels: Vol. 1, William Rahmeyer, David Werth

Reports

Preface: The following report was prepared by the utah Water Research Laboratory of Utah State University in Logan, Utah. Volume 1 of the UWRL report USU--400A contains the data summary and conclusions of flow tests conducted with different plant types and ecosystem groupings of shrubs and woody vegetation in the hydraulics flumes of Utah State University. The methodology and equations that were developed to predict flow resistance for fultiple plant types include the effects of plant fexibility, varying plant density, plant characteristics, and multiple plant stems. The study included over 214 flow tests, testing of 20 different plant types, 5 …


Utah Water Research Laboratory Publications Listing 1993-1996, David S. Bowles, Leaunda S. Hemphill Jan 1996

Utah Water Research Laboratory Publications Listing 1993-1996, David S. Bowles, Leaunda S. Hemphill

Reports

No abstract provided.


Cache County Water Demand/Supply Model, Trevor C. Hughes, Gregory J. Norby, Laxman Thyagarajan Jan 1996

Cache County Water Demand/Supply Model, Trevor C. Hughes, Gregory J. Norby, Laxman Thyagarajan

Reports

This report descibes a municipal water demand forecasting model for use in areas of mixed rural and urban housing types. A series of residential demand functions were derived which forecast water demand based on the ype and density of housing and season. Micro sampling techniques were used to correlate water use data and explanatory variable data for low, medium, and high density housing. The demand functions were incorporated into a geographic information system (GIS) platform cosisting of a desk-top mapping program, MapInfo, coupled with a user interface program written in Visual Basic. The GIS-based model analyzes water demand at the …


Illinois River Water Quality Automatic Sampler Installation, David G. Parker, Rodney Williams, Evan Teague Jan 1996

Illinois River Water Quality Automatic Sampler Installation, David G. Parker, Rodney Williams, Evan Teague

Arkansas Water Resources Center Technical Reports

No abstract provided.


Completion Report: Arkansas State Pesticides In Ground Water Monitoring Project Phase V: Vulnerable Areas In Jackson, Monroe, Lawrence And Lonoke Counties, T. Nichols, P. Vendrell, K. Steele, H. D. Scott, C. Armstrong Jan 1996

Completion Report: Arkansas State Pesticides In Ground Water Monitoring Project Phase V: Vulnerable Areas In Jackson, Monroe, Lawrence And Lonoke Counties, T. Nichols, P. Vendrell, K. Steele, H. D. Scott, C. Armstrong

Arkansas Water Resources Center Technical Reports

In 1996, sixty-seven water samples were drawn from 65 wells, including 62 new wells and 3 wells sampled previously . One Woodruff County well and two Pulaski County wells were resampled. Thirty-two samples were drawn from 30 wells in Monroe County (well #1 was sampled 3 times during this phase) . Ten wells in Jackson County, 12 wells in Lawrence County and 10 wells in Lonoke were also tested (Figures 1-5) . With the completion of Phase V, the number of wells tested has risen to 231 with a total of 258 samples analyzed . Initially, the wells were tested …


Landuse And Landcover Classification For Independence, Union, Bradley And Cleveland Counties Of Arkansas, H. Don Scott, Kimberly Hofer Jan 1996

Landuse And Landcover Classification For Independence, Union, Bradley And Cleveland Counties Of Arkansas, H. Don Scott, Kimberly Hofer

Arkansas Water Resources Center Technical Reports

Landuse/landcover (LULC} is a function of natural factors such as soils, climate and water and of anthropogenic factors such as predominant use. In Arkansas, the primary use of the land varies depending on the physiographic region. For example, in the Mississippi Delta region of eastern Arkansas row crop agriculture predominates, whereas in the Gulf Coastal Plains forestry dominates. In both regions LULC is spatially and temporally . variable. Knowledge of LULC can be used in estimating the potential for agricultural production, locations of critical ecological areas, siting of homes, small businesses, industries, roads and landfills as well as source areas …


Expression Of The Xenobiotic Transporter P-Glycoprotein In The Mummichog (Fundulus Heteroclitus), Peter S. Cooper Jan 1996

Expression Of The Xenobiotic Transporter P-Glycoprotein In The Mummichog (Fundulus Heteroclitus), Peter S. Cooper

Dissertations, Theses, and Masters Projects

The mammalian mdr1 P-glycoprotein (Pgp) has been implicated in xenobiotic resistance of drug-resistant cell lines and tumors, and may function in excretion or exclusion of toxic xenobiotics at several sites within the body. Pgp gene family members are expressed in excretory epithelia of several aquatic taxa and may contribute to the survival of pollution-tolerant aquatic animals in contaminated environments. For this reason the expression of Pgp family members was investigated in the livers and liver tumors of creosote-resistant mummichog (Fundulus heteroclitus) inhabiting a creosote-contaminated site (Atlantic Wood) in the Elizabeth River, Virginia. Expression of members of the Pgp gene family …


Fate And Transport Processes For Polycyclic Aromatic Hydrocarbons In The Surface Microlayer Of Southern Chesapeake Bay, Kewen Liu Jan 1996

Fate And Transport Processes For Polycyclic Aromatic Hydrocarbons In The Surface Microlayer Of Southern Chesapeake Bay, Kewen Liu

Dissertations, Theses, and Masters Projects

Surface microlayer (SM) samples were collected with a rotating cylinder sampler from the York and Elizabeth River estuaries of southern Chesapeake Bay every other month from May 1994 through June 1995. Total suspended particle concentration (TSP) concentrations in the SM were found to be up to 1000 times higher than in the corresponding subsurface water, and to be exponentially associated with the wind speed at sampling. A relatively larger POC/TN ratio in the Elizabeth River SM compared with that in the York River SM was also observed. No seasonal trends were noticed in the SM characteristics; however, TSP, POC, and …


Maine Implements The Clean Air Act: Federalism, Environmentalism And Interest Group Accountability, Jon Reisman Jan 1996

Maine Implements The Clean Air Act: Federalism, Environmentalism And Interest Group Accountability, Jon Reisman

Maine Policy Review

The implementation of environmental policy initiatives often brings about a complex interplay between science and policy, public opinion, interest groups, federal and state mandates, and political machination. Jon Reisman uses Maine’s recent experience of compliance with the 1990 Clean Air Act to illustrate this complexity. In doing so, he addresses several important, but often ignored, issues, such as stakeholder participation in the policy making process, interest group accountability to implementation, and the long term consequences to the environment if these issues are avoided.


1996 Maine Water Resources Conference Summary Jan 1996

1996 Maine Water Resources Conference Summary

Maine Policy Review

No abstract provided.


Small Mammal Community Structure In Restored Prairies, Kathleen A. Falout Jan 1996

Small Mammal Community Structure In Restored Prairies, Kathleen A. Falout

Masters Theses

The Illinois Department of Natural Resources currently manages approximately 4,000 hectares of natural prairie. High human impacts coupled with small patch size result in challenging management decisions for prairie conservation. The ideal restored prairie would consist of a mosaic of habitats varying in vegetation from forb-grass dominated areas to oak savannas, with concurrent stages of vegetative succession occurring across the habitats. A study was conducted at the Middle Fork State Fish and Wildlife Area located in Vermillion County, IL, to analyze small mammal diversity and community composition among three different stages of prairie restoration.

The three treatment categories were: fallow …


Environmental Assessment For 36 Livestock Grazing Allotments On The Shoshone National Forest, United States Forest Service Jan 1996

Environmental Assessment For 36 Livestock Grazing Allotments On The Shoshone National Forest, United States Forest Service

All U.S. Government Documents (Utah Regional Depository)

The Shoshone National Forest proposes to issue Term Grazing Permits that will authorize the grazing of livestock on 36 grazing allotments located within the Forest. Permits will be issued for a period of up to 10 years. Part 3 (Special Terms and Conditions) of each permit would contain site specific livestock and rangeland management requirements designed to mitigate existing resource conflicts and implement Forest Plan standards and guidelines specific to each allotment.


Environmental Assessment Amendment To Grand Mesa National Forest Travel Management Plan Revision 100 Mile Proposal, United States Forest Service Jan 1996

Environmental Assessment Amendment To Grand Mesa National Forest Travel Management Plan Revision 100 Mile Proposal, United States Forest Service

All U.S. Government Documents (Utah Regional Depository)

The purpose of this Environmental Assessment (EA) is to describe the environmental effects of a proposal to evaluate reopening approximately 100 miles of the 299 miles of nonsystem routes which were closed to motorized use by the Decision Notice on the Grand Mesa National Forest Travel Management Plan Revision dated December 12, 1994.


Energy And Deforestation In Ghana: A Study Of Woodfuel-Deforestation Links In Rural Ghana, Iddrisu Adam Jan 1996

Energy And Deforestation In Ghana: A Study Of Woodfuel-Deforestation Links In Rural Ghana, Iddrisu Adam

Theses and Dissertations (Comprehensive)

Forests are one of the most valuable natural resources of many countries, including Ghana. Timber and other forest products have contributed immensely to the development of the country. These same forests have been a source of sustenance to the Ghanian people. Most particularly, forests have been the principal source of domestic energy by way of providing woodfuels. The heavy reliance on forest resources is taking its toll on the health of Ghanaian forests. In recent years, there has been increased awareness of the depletion of trees—a problem that many researchers have attributed to the over-exploitation of forests especially for domestic …


Managing External Threats To National Parks In Canada's Western Mountains (Alberta), George Yap Jan 1996

Managing External Threats To National Parks In Canada's Western Mountains (Alberta), George Yap

Theses and Dissertations (Comprehensive)

External threats to protected areas exist because the area encompassed by the legal boundaries of many protected areas is less than what is needed to maintain a minimum viable population of various animal species and some types of plant associations. While external stresses to parks are the result of a wide range of human activities, they threaten ecological integrity in two general ways: by contributing to habitat fragmentation, alienation and loss (HFAL), and/or undermining the long-term viability of transboundary animal populations. However, in comparison to internal threats, addressing external threats is considerably more complex since park managers have no legal …


Lion-Tailed Macaques (Macaca Silenus) In A Disturbed Forest Fragment: Activity Patterns And Time Budget, Shaily Menon, Frank Poirier Dec 1995

Lion-Tailed Macaques (Macaca Silenus) In A Disturbed Forest Fragment: Activity Patterns And Time Budget, Shaily Menon, Frank Poirier

Shaily Menon

We describe the activity patterns and time budget of a feral group of lion-tailed macaques that were confined to a disturbed forest fragment of 65 ha and compare the results with those obtained for groups in protected forests. The degraded nature of the study site was reflected in low tree densities, low specific diversity, gaps in the girth distribution of trees, and frequent disturbance by humans. The study group of 43 subjects was twice as large as lion-tailed macaque groups in protected habitats. They spent the most time ranging (34.0%), followed by foraging (23.7%), feeding (17.9%), resting (16.0%), and other …


Development Of A Shear-Zone Bounded Block Uplift Within The Middle Crust Of The Archean Wyoming Province During Proterozoic Accretion, Laramie Mts., Wy, Phillip Resor, A Snoke, K Chamberlain Dec 1995

Development Of A Shear-Zone Bounded Block Uplift Within The Middle Crust Of The Archean Wyoming Province During Proterozoic Accretion, Laramie Mts., Wy, Phillip Resor, A Snoke, K Chamberlain

Phillip G Resor

No abstract provided.


Plant Conservation., Nat Quansah Dec 1995

Plant Conservation., Nat Quansah

Nat Quansah

No abstract provided.


Zastosowanie Modelowania Matematycznego Do Oceny Zanieczyszczenia Powietrza Powodowanego Przez Motoryzację, Marian Mazur, Robert Oleniacz, Bożena Biernat-Oleniacz Dec 1995

Zastosowanie Modelowania Matematycznego Do Oceny Zanieczyszczenia Powietrza Powodowanego Przez Motoryzację, Marian Mazur, Robert Oleniacz, Bożena Biernat-Oleniacz

Robert Oleniacz

The paper presents the results of an inventory of sources of air emissions from the city of Nowy Sacz (Poland) with regard to pollutant emissions from road transport, industrial processes, combustion plants and low-emissions from household furnaces. Particular attention has been devoted to assessing the impact of traffic on air quality in the city. Specified share of emissions from motor vehicles in the state of air pollution in the city center and its outskirts using the method of the atmospheric dispersion modeling.

English title: The use of mathematical modeling to assess air pollution caused by road transport.


Coyotes In The Southwest: Frontmatter Dec 1995

Coyotes In The Southwest: Frontmatter

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

Includes:

Cover
Editors
Sponsors
Steering Committee
Acknowledgements
Printer


Coyotes In The Southwest: Table Of Contents Dec 1995

Coyotes In The Southwest: Table Of Contents

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

Sections are:

Biology
Ecology
Perspectives
Management
Coyotes vs. Game Management
Coyotes vs. Livestock
Politics
Control Alternatives
Appendix


Symposium Proceedings—Coyotes In The Southwest: A Compendium Of Our Knowledge [Complete Work, 185 Pp.], Dale Rollins, Calvin Richardson, Terry Blankenship, Kem Canon, Scott Henke Dec 1995

Symposium Proceedings—Coyotes In The Southwest: A Compendium Of Our Knowledge [Complete Work, 185 Pp.], Dale Rollins, Calvin Richardson, Terry Blankenship, Kem Canon, Scott Henke

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

This is the complete volume, containing all 40+ articles and presentations. Each article is also hosted here separately under its individual title and authors.


Water Current, Volume 27, No. 6, December 1995 Dec 1995

Water Current, Volume 27, No. 6, December 1995

Water Current Newsletter

Buffer Strips Trap Contaminants
From the Director: Lack of Call of Proposals Sign of Politics at Work
Riparian Buffer Strips Prevent Pollution
Might Missouri Conference Topic
Manure Application Studied
Research Brief: A Multivariate Index Methodology for Landfill Site Characterization Using Geophysics and Geostatistics
Nebraska Water News
Guide for Sealing Wells Available from UNL
Symposium Focuses on Integrated Approach
Booklet Helps Find Water Information
Speaker Compares Public, Technical Views
Drijber Gets Into Microbial Communities
Dishrags Breeding Ground for Bacteria
Seminar Series to Present Views on Platte River Management


The Significance Of The Oso Condensate Project In The Nigerian Economy, I. P. Ojinnaka Dec 1995

The Significance Of The Oso Condensate Project In The Nigerian Economy, I. P. Ojinnaka

Bullion

This paper outlines the historical background and financing of the Oso condensate project, examines the benefits of the project in terms of revenue expectation, infrastructure development, employment and investment opportunities, benefit to the communities and owners of the project, as well as underline the potential constraints. For the ease of presentation, the paper is organised into sections and an introduction. Section I describes the features of the project while section II analyses the benefits. Section III outlines the potential constraints and section IV is summary and conclusion.


The Probe, Issue 161 – December 1995 Dec 1995

The Probe, Issue 161 – December 1995

The Probe: Newsletter of the National Animal Damage Control Association

Animal Activists Take Bear Issues to Idaho, Michigan, Massachusetts, and Washington
Canada Geese Almost "Get" Gingrich
Egrets Causing Health Hazards in Oklahoma
Pigeons Hitch a Ride In London
Book Review: Variations of the Flat Set, by Charles Dobbins. 1995. Sullivan Productions, Blue Creek, OH. 78 pages.
New Trapping Laws in Colorado


Bulletin No. 34: Tidal Marshes Of Long Island Sound: Ecology, History And Restoration, Glenn D. Dreyer, William A. Niering Dec 1995

Bulletin No. 34: Tidal Marshes Of Long Island Sound: Ecology, History And Restoration, Glenn D. Dreyer, William A. Niering

Bulletins

No abstract provided.


The Prairie Naturalist Volume 27, No.4 December 1995 Dec 1995

The Prairie Naturalist Volume 27, No.4 December 1995

The Prairie Naturalist

NEW DISTRIBUTIONAL RECORDS FOR MAMMALS IN KANSAS · D. W Sparks and J. R. Choate

CLAY-COLORED SPARROWS IN NORTH DAKOTA PARASITIZED BY BROWN-HEADED COWBIRDS ▪ G. P. Romig and R. D. Crawford

A NOTEWORTHY RECORD AND THE BREEDING DISTRIBUTION OF THE BLUE GROSBEAK IN NORTH DAKOTA ▪ L. D. Igl

NEAR LONGEVITY RECORD FOR THE SNOW GOOSE ▪ M T. Koenen and D. M. Leslie, Jr.

COMPARISON OF WATER CONSUMPTION BETWEEN TWO GRASSLAND EMBERIZIDS ▪ J. L. Zimmerman

FACTORS ASSOCIATED WITH DECLINING PROPORTION OF CITIZENS HUNTING IN SOUTH DAKOTA ▪ N. J. Dietz, K. F. Higgins, and R. D. Mendelsohn …


Damariscotta River Estuary: A Management Plan, Fran Rudoff, Jenny Ruffing, Tom Ford Dec 1995

Damariscotta River Estuary: A Management Plan, Fran Rudoff, Jenny Ruffing, Tom Ford

Documents from Environmental Organizations

One purpose ofthe Damariscotta River Estuary Project has been to ask and answer these and other questions. A second and equally important purpose ofthe Project has been to help the seven estuary communities improve communication and the ability to coordinate land and water use decisions to ensure the future good health of the estuary’s resources.


Distribution Of Submerged Aquatic Vegetation In The Chesapeake Bay And Tributaries And Chincoteague Bay - 1994, R J. Orth, Judith F. Nowak, Gary F. Anderson, David J. Wilcox, Jennifer R. Whiting, Leah S. Nagy Dec 1995

Distribution Of Submerged Aquatic Vegetation In The Chesapeake Bay And Tributaries And Chincoteague Bay - 1994, R J. Orth, Judith F. Nowak, Gary F. Anderson, David J. Wilcox, Jennifer R. Whiting, Leah S. Nagy

Reports

No abstract provided.