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Articles 19021 - 19050 of 22680
Full-Text Articles in Entire DC Network
The Growth, Enrichment, And Dehalogenating Properties Of Pyrococcus Gbd And Desulfurococcus Sy, Siegfried Georg Mueller
The Growth, Enrichment, And Dehalogenating Properties Of Pyrococcus Gbd And Desulfurococcus Sy, Siegfried Georg Mueller
Theses
Recent investigations of volcanic smoker chimneys along the Atlantic Rift has lead to the discovery of hyperthermophilic bacteria. In particular, Pyrococcus GBD and Desulfurococcus SY were studied, optimizing growth conditions. This was achieved using elemental sulfur amendments, artificial sea water, and dehydrated marine broth. The microbes were then acclimated to enriched cultures containing 2,4,6 trichlorophenol in 0.0126 mM, 0.063 mM, and 0.126 mM amendments. The amended cultures showed dehalogenating properties and were subjected to a data qualifying program. This program indicated that the dehalogenation was a function of microbial gowth. A mass balance experiment showed that both microbes were able …
Bioremediation Of 2-Chlorophenol In A Laboratory Soil Column, Timothy A. Coon
Bioremediation Of 2-Chlorophenol In A Laboratory Soil Column, Timothy A. Coon
Theses
In-situ bioremediation offers the prospect of rendering organic contaminants harmless without having to remove them from the subsurface. It involves the modification of environmental factors to stimulate the biodegradation of chemicals in the subsurface by microorganisms. However, for the cost-effective use of in-situ bioremediation, it is necessary to develop accurate engineering models to quantify biodegradation.
In this thesis, the biodegradation of 2-chlorophenol in a laboratory soil column was examined in order to experimentally verify an engineering model. Experiments were performed to obtain the physical and biological parameters required by the model, and the steady-state 2-chlorophenol distribution in the column.
A …
Abundance Of Gulls And Other Birds At Landfills In Northern Ohio, Jerrold L. Belant, Thomas W. Seamans, Steven W. Gabrey, Richard A. Dolbeer
Abundance Of Gulls And Other Birds At Landfills In Northern Ohio, Jerrold L. Belant, Thomas W. Seamans, Steven W. Gabrey, Richard A. Dolbeer
United States Department of Agriculture Wildlife Services: Staff Publications
We estimated the abundance of birds at three landfills in northern Ohio from May 1991-July 1992 recording 699,350 individuals of 42 species. Gulls (Larus spp.) comprised 94.5% of the birds recorded followed by European starlings (Sturnus vulgaris, 5.0%) and turkey vultures (Cathartes aura, 0.3%). Gulls were primarily of two species, ring-billed (L. delawarensis, 74.49%) and herring (L. argentatus, 25.50%). The mean number of gulls per observation during July-January was at least five times the mean number observed during other months. The combined monthly mean number of gulls at the three landfills peaked in August (>4000 birds), with gulls virtually …
Land Use Patterns In Relation To Lake Water Quality In The Long Pond, South Basin Watershed, Problems In Environmental Science Course (Biology 493), Colby College, Colby College
Land Use Patterns In Relation To Lake Water Quality In The Long Pond, South Basin Watershed, Problems In Environmental Science Course (Biology 493), Colby College, Colby College
Colby College Watershed Study: Long Pond, South (2007, 1995)
Long Pond, South Basin receives nutrient inputs from a variety of sources, including roads, construction projects, logging practices, and human waste from subsurface waste disposal systems. If any of these sources are near tributaries or the shoreline, the nutrients can be easily transported into the lake itself. The lake is also used recreationally for boating, fishing and swimming, and is utilized as a source of drinking water for seasonal shoreline residences. The watershed contains the Mt. Vernon and Belgrade transfer stations, and the dump has been capped at each of these stations.
Historically, Long Pond, South Basin has not suffered …
Toward An Integrated Regional Research Program On Global Change And The Nation's Major Grasslands: Second Annual Report, Great Plains Regional Center-Nigec
Toward An Integrated Regional Research Program On Global Change And The Nation's Major Grasslands: Second Annual Report, Great Plains Regional Center-Nigec
School of Natural Resources: Faculty Publications
I DIRECTOR'S REPORT:
A GPRC Research Framework and Thrusts
B FY94 GPRC Grant Competition
C Synopsis of Current Projects 1 Thrust 1: Impacts of Climate Change 2 Thrust 2: Measuring and Modeling Net Carbon Exchange 3 Other Projects
D Summary and Recommendations of FY94 GPRC PI's Workshop 1 Biogeochemical Cycling Group 2 Climate Scenarios Group 3 Managed and Unmanaged Ecosystem Impacts Group 4 Scaling Group 5 Actions Prompted by the Workshop
E Research Integration with ARM-CART: Eco-ARM
F Future Directions for the GPRC
Appendix I-A: Biogeochemical Cycling Group Workshop Report • Appendix I-B: Climate Change Scenarios Group Workshop Report • …
Remote Sensing Of Chlorophyll In Lake Kinneret Using Highspectral- Resolution Radiometer And Landsat Tm: Spectral Features Of Reflectance And Algorithm Development, Yosef Z. Yacobi, Anatoly Giltelson, Meir Mayo
Remote Sensing Of Chlorophyll In Lake Kinneret Using Highspectral- Resolution Radiometer And Landsat Tm: Spectral Features Of Reflectance And Algorithm Development, Yosef Z. Yacobi, Anatoly Giltelson, Meir Mayo
School of Natural Resources: Faculty Publications
High-resolution reflectance spectra in the range of 400-850 nm were obtained from Lake Kinneret during a period when dense populations of the dinoflagellate Peridinium gatunense dominated the phytoplankton. Chlorophyll (ChI) concentrations ranged from 5.1 to 185 mg m-3 and from 2.4 to 187.5 mg m-3 in the samples of two independent experiments. The most prominent features of the reflectance spectra were: (i) a wide minimum from 400 to 500 nm; (ii) a maximum at 550-570 nm, which did not surpass 3% in samples with high ChI concentration (>20 mg m-3), indicating a strong absorption by …
Local Heritage In The Changing Tropics: Innovative Strategies For Natural Resource Management And Control, Greg Dicum
Local Heritage In The Changing Tropics: Innovative Strategies For Natural Resource Management And Control, Greg Dicum
Yale School of the Environment Bulletin Series
No abstract provided.
Soil Conservation/Water Quality Wetlands And Symposium
Soil Conservation/Water Quality Wetlands And Symposium
Journal of the Minnesota Academy of Science
No abstract provided.
Influence Of Vegetated Wetlands On The Water Quality Of Two Glacial Prairie Lakes, Lois Haertel, Walter G. Duffy, Daniel E. Kokesh
Influence Of Vegetated Wetlands On The Water Quality Of Two Glacial Prairie Lakes, Lois Haertel, Walter G. Duffy, Daniel E. Kokesh
Journal of the Minnesota Academy of Science
We investigated the influence of vegetated wetlands on water quality of two eastern South Dakota glacial prairie lakes. Surface water from a 5,880 ha pastured basin drains into a 90 ha upstream Typha wetland and enters Lake Enemy Swim passing 400 m through Typha-Scirpus littoral wetland. A second 1,290 ha basin characterized by row crops and pasture drains into a 260 ha open water slough entering L. Enemy Swim adjacent to Typha-Scirpus littoral wetland. Water enters Lake Cochrane from two smaller drainage basins. Water from a 180 ha basin consisting of a pasture and wet meadow enters the lake after …
Wetlands/Groundwater Quality In Agricultural Landscapes, D. H. Rickerl, D. E. Kringen, T. A. Machacek
Wetlands/Groundwater Quality In Agricultural Landscapes, D. H. Rickerl, D. E. Kringen, T. A. Machacek
Journal of the Minnesota Academy of Science
In the Prairie Pothole Region (PPR - SO, NO, MN, IA), wetlands classified as "semi-permanent" or "seasonal" can act as groundwater recharge sites. The nutrient filtering capacity of wetlands has been investigated for both natural and constructed wetlands linked to surface water, but there is little information available on their subsequent impact on groundwater quality. This study investigates four seasonal and two semi-permanent wetlands in the PPR of eastern South Dakota. Transitional no-till (TNT) and organic farm (ORG) management systems border the wetlands. The objective is to determine the effects of farm management system on wetland surface water and groundwater …
Conserving Biodiversity On Private Lands, David Farrier, University Of Colorado Boulder. Natural Resources Law Center
Conserving Biodiversity On Private Lands, David Farrier, University Of Colorado Boulder. Natural Resources Law Center
Books, Reports, and Studies
19 p. ; 28 cm
Chemical And Biological Monitoring Of A Constructed Wetland On Jones Branch Treating Acid Mine Drainage, Barbara A. Ramey, George Chalfant, Jon A. Walker
Chemical And Biological Monitoring Of A Constructed Wetland On Jones Branch Treating Acid Mine Drainage, Barbara A. Ramey, George Chalfant, Jon A. Walker
KWRRI Research Reports
Acid mine drainage (AMD) from an abandoned underground coal mine in the Jones Branch watershed in McCreary County, KY, substantially reduced water quality in Jones Branch. Downstream from the mine seeps, the pH was routinely below 4.5 and concentrations of most heavy metals, especially iron, were elevated. A cattail wetland (1,022 m2) was constructed on Jones Branch in 1988-1989 to obviate the effects of the AMD. Monthly chemical monitoring was performed on the water from above, from below, from the inlet and outlet of the wetland, and from the 25 cells within the wetland. Based on chemical monitoring, …
Environmental Messages In Boating Magazines: A Content Analysis Of Recreational Power Boating Articles, Robert S. Holtzman
Environmental Messages In Boating Magazines: A Content Analysis Of Recreational Power Boating Articles, Robert S. Holtzman
Marine Affairs Theses and Major Papers
This paper presents the results of a study analyzing the editorial content of consumer power boating magazines for messages of environmental responsibility. It presents evidence of a cause and effect relationship between recreational power boating and damage to the marine environment, and cites arguments that power boating in its currently popular form, involving high speeds and heavy fuel consumption, is inherently "unfriendly" to the environment. The paper describes a "chain of influence" through which boat manufacturers, in their role as advertisers, influence the editorial content of consumer boating magazines through the tactics of marketing public relations. A hypothesis is developed …
Dispersants For Oil Spill Response: Issues, Policy, And Planning Considerations, Tina M. Burke
Dispersants For Oil Spill Response: Issues, Policy, And Planning Considerations, Tina M. Burke
Marine Affairs Theses and Major Papers
The purposes of this paper are four-fold. First, dispersant use as an oil spill response option and the issues surrounding dispersant use will be discussed. Second, the past dispersant use policy will be reviewed, as will the recent changes to the policy in terms of the attempt to make dispersants a viable response option in the United States. Third, the role of interest groups in oil spill response issues and the importance of including them in contingency planning efforts, specifically dispersant planning, will be discussed. Lastly, the results of the study to determine the involvement of interest groups in the …
Community Participation In The Management Of Pulau Seribu National Marine Park, Indonesia, Darmawan
Community Participation In The Management Of Pulau Seribu National Marine Park, Indonesia, Darmawan
Marine Affairs Theses and Major Papers
The purpose of this thesis is to examine an approach for improving management in Pulau Seribu National Marine Park based on better relations between managers, local government and communities. It includes: a description of the Pulau Seribu National Marine Park, a literature review on community participation, a description of the national governance of marine conservation in Indonesia, and a proposed mechanism for community participation in park management. In an effort to manage its marine resources, Indonesia has established a well-structured institutional framework and body of environmental legislation. However, this administrative structure does not as yet include a mechanism for accommodating …
Implementation Of Harbor Management Plans: The Next Generation Of Mooring Management Incorporates Gps And Gis, Tracy E. Lang
Implementation Of Harbor Management Plans: The Next Generation Of Mooring Management Incorporates Gps And Gis, Tracy E. Lang
Marine Affairs Theses and Major Papers
This paper describes the development of a spatial decision-support and management system to be used for improved coastal and harbor management. The design combines two separate systems, one is the use of Global Positioning Systems (GPS), and the other is the use of a Geographic Information (GIS) (ARCVIEW II). This pilot project specifically examined the use of GPS and GIS to identify, map, and monitor individual mooring buoys in one recreational harbor in Narragansett, Rhode Island. GPS was used for collection of positional information and was compared to one traditional marine positioning device, Loran-C, and the variations between each method …
Rapid Rural Appraisal Of Household Adaptations To The Coastal Zone Of Ecuador, Jennifer A. Pereira
Rapid Rural Appraisal Of Household Adaptations To The Coastal Zone Of Ecuador, Jennifer A. Pereira
Marine Affairs Theses and Major Papers
It has become clear to those interested in development that the household is an integral institution linking the individual to the society and the environment. Understanding the functioning of this institution will facilitate improvements in planning, evaluation, and output of development projects. Development projects suffer from a lack of efficient research methods for collecting socioeconomic information regarding the household. It has been proposed that Rapid Rural Appraisal (RRA), a method of field work that is timely, flexible, and places an emphasis on local participation, may be an appropriate method for collecting these types of data. RRA was originally developed for …
The Rhode Island Marine Fisheries Council: Stewardship In Need Of Goals And Objectives, Robert Censabella
The Rhode Island Marine Fisheries Council: Stewardship In Need Of Goals And Objectives, Robert Censabella
Marine Affairs Theses and Major Papers
In the State of Rhode Island, marine fisheries are managed through the Marine Fisheries Council, a citizen-based regulatory body of nine members from either the commercial or recreational fishing industries or experienced with the conservation and management of fisheries resources. To ostensibly help this group make informed decisions, biological data and scientific advice are provided by the State Division of Fish and Wildlife. This thesis examines the decision-making process of this Council. More specifically, it provides a case study of how this body has attempted to manage the State's winter flounder stocks-an economically-valuable species which confines its life cycle mostly …
Teacher Resouce Guides For The San Bernardino County Museum, Cindy Louise Fullwiler
Teacher Resouce Guides For The San Bernardino County Museum, Cindy Louise Fullwiler
Theses Digitization Project
No abstract provided.
Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 1, Appendix A, United States Department Of Energy
Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 1, Appendix A, United States Department Of Energy
All U.S. Government Documents (Utah Regional Depository)
The U.S. Department of Energy (DOE) is currently deciding the direction of its environmental restoration and waste management programs at the Idaho National Engineering Laboratory (INEL) for the next 10 years. Pertinent to this decision is establishing policies for the environmentally sensitive and safe transport, storage, and management of spent nuclear fuels (SNF). To develop these policies, it is necessary to revisit or examine the available options. As a part of the DOE complex, the Hanford Site not only has a large portion of the nationwide DOE-owned inventory of SNF, but also is a participant in the DOE decision for …
A Review Of Research And Literature Linking Breast Cancer To Pesticides, Patricia L. Pellegrino-Peard
A Review Of Research And Literature Linking Breast Cancer To Pesticides, Patricia L. Pellegrino-Peard
Theses Digitization Project
No abstract provided.
Structure Of Woody Riparian Vegetation In Great Basin National Park, S. D. Smith, K. J. Murray, F. H. Landau, A. M. Sala
Structure Of Woody Riparian Vegetation In Great Basin National Park, S. D. Smith, K. J. Murray, F. H. Landau, A. M. Sala
Life Sciences Faculty Research
The community composition and population structure of the woody riparian vegetation in Great Basin National Park are described. Community analyses were accomplished by sampling 229 plots along an elevational gradient of 8 major stream systems in the Park. TWINSPAN analysis identified 4 primary species groups that were characterized by Populus tremuloides (aspen), Abies concolor (white fir), Rosa woodsii (Woods rose), and Populus angustifolia (narrowleaf cottonwood) as dominants, respectively. Detrended Correspondence Analysis (DECORANA) showed that the most important environmental factors associated with the distribution of species were elevation and slope, with flood-related physiographic factors having a secondary effect. Analysis of size-class …
Wildlife Conservation, Zoos And Animal Protection: A Strategic Analysis, Andrew N. Rowan
Wildlife Conservation, Zoos And Animal Protection: A Strategic Analysis, Andrew N. Rowan
The publication consists of the proceedings of a workshop, sponsored by the Gilman Foundation, and held in April of 1994 at the White Oak Conservation Center in Florida. About thirty participants were invited from zoos, animal protection groups and academic institutions to discuss concepts such as wild, captive and tame; animal well-being in the wild and in zoos; and protecting individuals versus conserving populations. In order to maximize the time engaged in discussion, several individuals were identified to prepare target articles which were distributed to all participants before the meeting. These articles form the main chapters in this book. Other …
Treaties, Spirituality, And Ecosystems, American Indian Interests In The Northern Intermontane Region Of Western North America, United States Bureau Of Land Management
Treaties, Spirituality, And Ecosystems, American Indian Interests In The Northern Intermontane Region Of Western North America, United States Bureau Of Land Management
All U.S. Government Documents (Utah Regional Depository)
As a contribution to the Interior Columbia Basin Ecosystem Management Project, this report provides an introduction to current American Indian interests in the northern intermontane region of western North America and assesses the prospects of tribes pursuing those interests into the 21st century. A primary goal of the Federal interagency project is to develop scientifically sound and ecosystem-based management strategies for forest and range lands under stewardship of the Forest Service and Bureau of Land Management in the greater Pacific Northwest (Fig. 1). As an integral part of the project, a scientific assessment is designed to characterize and assess socio-economic …
Draft Environmental Impact Statement, Oil And Gas Leasing On Lands Administered By Dixie National Forest, United States Bureau Of Land Management
Draft Environmental Impact Statement, Oil And Gas Leasing On Lands Administered By Dixie National Forest, United States Bureau Of Land Management
All U.S. Government Documents (Utah Regional Depository)
This Environmental Impact Statement documents the analysis of the potential effects of implementing each of five alternatives for management of the Federal oil and gas estate on lands administered by the Dixie National Forest in Garfield, Kane, Iron, Washington, Piute, and Wayne Counties, Utah. The existing condition of the environmental resources in the project area is documented and potential impacts to those resources as a result of implementing the proposed action are addressed. The alternatives are Proposed Action - Forest Plan Intent, (1) No Action - No Lease, (2) Forest Plan Modification A, (3) Forest Plan Modification B, (4) Forest …
Draft Special Resource Study And Environmental Assessment, United States Department Of Interior National Park Service
Draft Special Resource Study And Environmental Assessment, United States Department Of Interior National Park Service
All U.S. Government Documents (Utah Regional Depository)
One of the responsibilities of the National Park Service is to identify nationally significant natural, cultural, and recreational resources and assist in their preservation both inside and outside the national park system. The areas managed by the National Park Service are only one part of a national inventory of special and protected areas managed by innumerable federal, state, and local agencies and the private sector. Consequently, addition to the national park system is only one of many alternatives for ensuring the preservation of significant national resources for public enjoyment and benefit. As such, the purpose of this study is to …
Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 2, Part B, United States Department Of Energy
Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 2, Part B, United States Department Of Energy
All U.S. Government Documents (Utah Regional Depository)
Per U.S. Environmental Protection Agency's guidance, each contaminant was categorized as carcinogenic or noncarcinogenic. Exposures to contaminants were then evaluated for potential health effects. The method used was dependent on whether the exposure was to the public or to a worker and whether the contaminant was classified as a carcinogen or a noncarcinogen. Health effects were reported separately and were not summed where distinctly different types of effects were reported for chemical exposures (that is, carcinogenic and noncarcinogenic).
Jackson Hole Cooperative Elk Studies Group, Grand Teton National Park, 1995 Annual Report, United States Department Of The Interior, National Park Service
Jackson Hole Cooperative Elk Studies Group, Grand Teton National Park, 1995 Annual Report, United States Department Of The Interior, National Park Service
Wildlife Conservation and Management
A modelling effort using POP-II software was presented to show the effects of altering the harvest structure of the reduction. The relatively high harvests of the last two years may result in maintaining the current Park population levels. A variety of scenarios increasing the number and proportion of cows harvested show the greater effects cow harvests have on reducing the population relative to bull harvests.
Nps Educational Directory, Kathryn L. Farrell-Poe
Nps Educational Directory, Kathryn L. Farrell-Poe
All Archived Publications
No abstract provided.
Dreissena Polymorpha In The Saginaw Bay, Lake Huron Ecosystem: Overview And Perspective, Thomas F. Nalepa, Gary L. Fahnenstiel
Dreissena Polymorpha In The Saginaw Bay, Lake Huron Ecosystem: Overview And Perspective, Thomas F. Nalepa, Gary L. Fahnenstiel
United States Department of Commerce: Staff Publications
After the zebra mussel, Dreissena polymorpha, was first discovered in Lake St. Clair in 1988 and rapidly spread throughout the Great Lakes, broad ecological changes became apparent in regions where this species was most abundant. Previous investigations documented dramatic increases in water clarity (Hebert et al. 1991, Marsden et al. 1993, Leach 1993), declines in chlorophyll and phytoplankton abundances (Leach 1993, Nicholls and Hopkins 1993, Holland 1993), and changes in benthic invertebrate communities (Griffiths 1993, Dermott et al. 1993, Stewart and Haynes 1994). These studies were conducted in various regions and defined impacts on a specific ecosystem component. Taken …