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in subjects: "Terrestrial Ecosystems"  
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Terrestrial Ecosystem Responses to Global Change: A Research Strategy

Description: Uncertainty about the magnitude of global change effects on terrestrial ecosystems and consequent feedbacks to the atmosphere impedes sound policy planning at regional, national, and global scales. A strategy to reduce these uncertainties must include a substantial increase in funding for large-scale ecosystem experiments and a careful prioritization of research efforts. Prioritization criteria should be based on the magnitude of potential changes in environmental properties of concern to socie… more
Date: September 23, 1998
Creator: Ecosystems Working Group,
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modeling the response of plants and ecosystems to CO{sub 2} and climate change. Final technical report, September 1, 1992--August 31, 1996

Description: Objectives can be divided into those for plant modeling and those for ecosystem modeling and experimental work in support of both. The author worked in a variety of ecosystem types, including pine, arctic, desert, and grasslands. Plant modeling objectives are: (1) to construct generic models of leaf, canopy, and whole-plant response to elevated CO{sub 2} and climate change; (2) to validate predictions of whole-plant response against various field studies of elevated CO{sub 2} and climate change… more
Date: April 10, 1998
Creator: Reynolds, James F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Description and field performance of the Walker Branch throughfall displacement experiment: 1993--1996

Description: The authors are conducting a large-scale manipulative field experiment in an upland oak forest on the Walker Branch Watershed in eastern Tennessee to identify important ecosystem responses that might result from future precipitation changes. The manipulation of soil water content is being implemented by a gravity-driven transfer of throughfall from one 6400-m{sup 2} treatment plot to another. Throughfall is intercepted in {approx}1850 subcanopy troughs suspended above the forest floor of the dr… more
Date: April 1, 1998
Creator: Hanson, P. J.; Todd, D. E.; Huston, M. A.; Joslin, J. D.; Croker, J. L. & Auge, R. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nevada Test Site Resource Management Plan

Description: The Nevada Test Site (NTS) Resource Management Plan (RMP) describes the NTS Stewardship Mission and how its accomplishment will preserve the resources of the ecoregion while accomplishing the objectives of the mission. The NTS Stewardship Mission is to manage the land and facilities at the NTS as a unique and valuable national resource. The RMP has defined goals for twelve resource areas based on the principles of ecosystem management. These goals were established using an interdisciplinary tea… more
Date: December 1, 1998
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Pleistocene biogeography of eastern North America: A nonmigration scenario for deciduous forest

Description: The current reconstruction of the vegetation of eastern North America at the last glacial maximum postulates a very wide zone of tundra and boreal forest south of the ice. This reconstruction requires that the deciduous forest retreated far to the south. The authors believe that this reconstruction is seriously in error. Geologic evidence for glacial activity or tundra is absent from the southern Appalachians. Positive evidence for boreal forest is based on pollen identifications for Picea, Bet… more
Date: December 31, 1998
Creator: Loehle, C. & Iltis, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A study of bat populations at Los Alamos National Laboratory and Bandelier National Monument, Jemez Mountains, New Mexico: FY95--97 report to Los Alamos National Laboratory and Bandelier National Monument

Description: In 1995, a three-year study was initiated to assess the current status of bat species of concern, elucidate distribution and relative abundance, and obtain information on roosting sites of bats. The authors captured and released 1532 bats of 15 species (Myotis californicus, M. ciliolabrum, M. evotis, M. thysanodes, M. volans, M. yumanensis, Lasiurus cinereus, Lasionycteris noctivagans, Pipistrellus hesperus, Eptesicus fuscus, Euderma maculatum, Corynorhinus townsendii, Antrozous pallidus, Tadar… more
Date: December 31, 1998
Creator: Bogan, M. A.; O`Shea, T. J.; Cryan, P. M.; Ditto, A. M.; Schaedla, W. H.; Valdez, E. W. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Multivariate geographic clustering on the world`s first zero price/performance parallel computer

Description: The authors present an application of multivariate non-hierarchical statistical clustering to geographic environmental data from the 48 conterminous US in order to produce maps of regions of ecological similarity, called ecoregions. These maps represent more realistic and finer scale regionalizations than those generated by the traditional technique: an expert with a marker pen. Nine input variables thought to affect the growth of vegetation are clustered at a resolution of one square kilometer… more
Date: October 1998
Creator: Hoffman, F. M.; Hargrove, W. W. & Schultz, A. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Terrestrial ecosystem responses to global change: A research strategy

Description: Uncertainty about the magnitude of global change effects on terrestrial ecosystems and consequent feedbacks to the atmosphere impedes sound policy planning at regional, national, and global scales. A strategy to reduce these uncertainties must include a substantial increase in funding for large-scale ecosystem experiments and a careful prioritization of research efforts. Prioritization criteria should be based on the magnitude of potential changes in environmental properties of concern to socie… more
Date: September 1, 1998
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final Report: Fine-Mesh Treatment of the Land Component of a Global Climate Model, September 1, 1994 - August 31, 1998

Description: The characteristics of land important for climate are very heterogeneous, as are the key atmospheric inputs to land, i.e. precipitation and radiation. To adequately represent this heterogeneity, state-of-the-art climate models should represent atmospheric inputs to land, land properties, and the dynamical changes of land at the highest resolution accessible by climate models. The research funded under this project focused on the development of an alternative approach to this problem in which a … more
Date: August 31, 1998
Creator: Dickinson, Robert E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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