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in subjects: "Aquatic Organisms"  
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Phase 1 of the Hanford Environmental Dose Reconstruction Project

Description: This report summarizes the water pathway portion of the first phase of the Hanford Environmental Dose Reconstruction (HEDR) Project, conducted by Battelle staff at the Pacific Northwest Laboratory under the direction of an independent Technical Steering Panel. The HEDR Project is estimating radiation doses that could have been received by the public from the Department of Energy's Hanford Site, in southeastern Washington State. Phase 1 of the water-pathway dose reconstruction sought to det… more
Date: July 20, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Moored Instrument for Time Series Studies of Primary Production and Other Microbial Rate Processes

Description: The goal of this project is to build and test a Time Series Submersible Incubation Device (TS-SID) capable of the autonomous in situ measurement of phytoplankton production and other rate processes for a period of up at least three months. The instrument is conceptually based on a recently constructed Submersible Incubation Device (SID). The TS-SID is to possess the ability to periodically incubate samples in the presence of an appropriate tracer, and to store 94 chemically fixed subsamples for… more
Date: January 20, 1993
Creator: Taylor, C. D. & Doherty, K. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cycles in fossil diversity

Description: It is well-known that the diversity of life appears to fluctuate during the course the Phanerozoic, the eon during which hard shells and skeletons left abundant fossils (0-542 Ma). Using Sepkoski's compendium of the first and last stratigraphic appearances of 36380 marine genera, we report a strong 62 {+-} 3 Myr cycle, which is particularly strong in the shorter-lived genera. The five great extinctions enumerated by Raup and Sepkoski may be an aspect of this cycle. Because of the high statistic… more
Date: October 20, 2004
Creator: Rohde, Robert A. & Muller, Richard A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Energy from marine biomass. Quarterly report, July 1-September 30, 1978

Description: A major milestone was completed in the Oceans Engineering area with the successful deployment of the Test Farm. All systems were installed by 29 September 1978, and a detailed systems checkout is now underway prior to a full start-up of the Test Farm. Compatibility of the Test Farm with the planned transport and attachment procedures of the Macrocystis pyrifera plants has been completed and planting will begin on the full structure during the month of October. Success was also achieved in the I… more
Date: October 20, 1978
Creator: Tompkins, A. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Bioassay Procedure to Evaluate the Acute Toxicity of Salinity and Geothermal Pollutants (Pesticides) to Gambusia Affinis. Final Report

Description: The salinity tolerance of Gambusia affinis was determined in static bioassays. Gambusia easily tolerated salinity of 47.5 percent in 96 hour static bioassays. Survival at this level was 93.3 percent with the lowest survival being 68 percent at 40 percent salinity. The acute toxicities of endrin, DDT, aldrin, and dieldrin to Gambusia were determined by static and intermittent-flow bioassays. Toxicity was measured as the Mediant lethal Concentration (TL/sub 50/) for 96-hr exposures. TL/sub 50/ va… more
Date: December 20, 1977
Creator: Mills, W. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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