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Simulation of the carbon cycle in the ocean

Description: A dual carbon-nitrogen biological model of the upper ocean has been developed, which has successfully allowed predictions of fluxes of carbon between atmosphere and the deep ocean to made. Regarding studying the carbon cycle in the ocean, the modelling has highlighted the need for a good understanding of the interactions between the carbon and nitrogen cycles, and also the importance of zooplankton grazing and levels of overwintering biological stocks. Problems have been encountered with the ac… more
Date: September 16, 1991
Creator: Fasham, M.J.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Wetlands proximity mapping of 86 waste sites on the Savannah River Plant

Description: This project developed wetlands proximity maps and provided wetlands information by means of a Geographic Environmental Data Base (GEDB) for each of 11 interaction zones identified in DPST-84-684. It includes an analysis of 86 hazardous waste sites at the Savannah River Plant (SRP). The map of each interaction zone is intended to indicate major wetland and land cover types, with emphasis on locations of hazardous waste sites with wetland areas identified within a 1000 meter radius. Statistics o… more
Date: September 16, 1985
Creator: Jensen, J.R. (South Carolina Univ., Columbia, SC (USA). Dept. of Geography)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Changes in Dimethyl Sulfide Oceanic Distribution due to Climate Change

Description: Dimethyl sulfide (DMS) is one of the major precursors for aerosols and cloud condensation nuclei in the marine boundary layer over much of the remote ocean. Here they report on coupled climate simulations with a state-of-the-art global ocean biogeochemical model for DMS distribution and fluxes using present-day and future atmospheric CO{sub 2} concentrations. They find changes in zonal averaged DMS flux to the atmosphere of over 150% in the Southern Ocean. This is due to concurrent sea ice chan… more
Date: February 16, 2011
Creator: Cameron-Smith, P; Elliott, S; Maltrud, M; Erickson, D & Wingenter, O
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Proposal to Develop Guides for High School Teachers on Global Systems Science. Final Project Report

Description: The Lawrence Hall of Science requests funding for development of trial versions of five guides for high school teachers on the topic of Global Systems Science. The guides will reflect the guided-discovery approach for which the Lawrence Hall of Science has gained an international reputation. They will include a wealth of materials already developed as well as new materials, organized as a comprehensive program on global change. The guides could be used together for an entire one-semester course… more
Date: February 16, 1993
Creator: Sneider, C. I. & Golden, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Columbia River Hatchery Reform System-Wide Report.

Description: The US Congress funded the Puget Sound and Coastal Washington Hatchery Reform Project via annual appropriations to the US Fish and Wildlife Service (USFWS) beginning in fiscal year 2000. Congress established the project because it recognized that while hatcheries have a necessary role to play in meeting harvest and conservation goals for Pacific Northwest salmonids, the hatchery system was in need of comprehensive reform. Most hatcheries were producing fish for harvest primarily to mitigate for… more
Date: April 16, 2009
Creator: Warren, Dan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Early deterioration of coarse woody debris.

Description: Tainter, F.H., and J.W. McMinn. 1999. Early deterioration of coarse woody debris. In: Proc. Tenth Bien. South. Silv. Res. Conf. Shreveport, LA, February 16-18, 1999. Pp. 232-237 Abstract - Coarse woody debris (CWD) is an important structural component of southern forest ecosystems. CWD loading may be affected by different decomposition rates on sites of varying quality. Bolts of red oak and loblolly pine were placed on plots at each of three (hydric, mesic. and xerlc) sites at the Savannah Rive… more
Date: February 16, 1999
Creator: Tainter, Frank, H. & McMinn, James, W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Proposal to Develop Guides for High School Teachers on Global Systems Science. [Final Project Report]

Description: The Lawrence Hall of Science requests funding for development of trial versions of five guides for high school teachers on the topic of Global Systems Science. The guides will reflect the guided-discovery approach for which the Lawrence Hall of Science has gained an international reputation. They will include a wealth of materials already developed as well as new materials, organized as a comprehensive program on global change. The guides could be used together for an entire one-semester course… more
Date: February 16, 1993
Creator: Sneider, C. I. & Golden, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

PLANTS AS BIO-MONITORS FOR 137CS, 238PU, 239, 240PU AND 40K AT THE SAVANNAH RIVER SITE

Description: The nuclear fuel cycle generates a considerable amount of radioactive waste, which often includes nuclear fission products, such as strontium-90 ({sup 90}Sr) and cesium-137 ({sup 137}Cs), and actinides such as uranium (U) and plutonium (Pu). When released into the environment, large quantities of these radionuclides can present considerable problems to man and biota due to their radioactive nature and, in some cases as with the actinides, their chemical toxicity. Radionuclides are expected to d… more
Date: December 16, 2010
Creator: Caldwell, E.; Duff, M. & Ferguson, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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