Finding the Forest in the Trees The Challenge of Combining Diverse Environmental Data (1995) / Chapter Skim
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4 The H.J. Andrew Experimental Forest Long-Term Ecological Research Site
4 The H.J. Andrew Experimental Forest Long-Term Ecological Research Site
Pages 46-55
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From page 46... ...
(1990~) and the research programs and core data sets of the Andrews site are summarized in McKee et al.
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From page 47... ...
The scientific scope of the committee's case study is limited to the interdisciplinary observational and experimental studies at the LTER Andrews site, although it also reviews the data management and institutional relationships of the Andrews site to the other LTER sites and to NSF. The research at the Andrews site has certain key similarities to the committee's other case studies.
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From page 48... ...
TABLE 4.1 H.~. Andrews Experimental LTER Site Data Sets Data Set Description Dendrometer measurements in permanent reference stands Respiration patterns in logs Coarse woody debris density and nutrient content Stream cross-sectional profiles Watershed streamflow summaries H.J.
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From page 49... ...
Determines seasonal and annual rates of litterfall samples at six permanent plots picked to represent a range of habitats and elevations. Measures biomass of riparian vegetation strata, characterizes phonology of leafout and leaf fall, and determines the spatial distribution of foliar biomass, and timing and amount of annual foliar inputs into steams.
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From page 50... ...
Stream chemistry sampled to characterize the timing and amount of elemental losses in undisturbed conditions, and to determine the effects of logging on rates of nutrient release. Provides climatic summaries and documentation for the primary meteorological station at H.J.
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From page 51... ...
. DATA MANAGEMENT AND INTERFACING The LTER concept is to have a network of intensively studied sites around the United States in various ecosystems, all measuring similar parameters and studying similar ecosystem processes.
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From page 52... ...
As the LTER Program has progressed, the value of these disparate data sets has increased, not only for the originating principal investigators, but also for the co-investigators and other scientists, who have begun to integrate multiple data sets. These factors have tended to help the development of FSDB.
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From page 53... ...
This situation has improved, not only because of the reasons given above, but also because an increasing reliance on mathematical models has encouraged the use and interpretation of a variety of data sets. The data management team as well as the principal investigators now try to anticipate data management issues at the beginning of each individual study project, including the incorporation of metadata support.
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From page 54... ...
This, however, appears to be changing because of a realization that there is now a large body of data from different ecosystems in the United States and some means needs to be devel° ? ed to provide access to these data sets.
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From page 55... ...
The system lacks a modern users' interface, has limited access capability, is made up of a large number of small data sets, and will probably continue to be costly to maintain and upgrade. Because of the small number of principal investigators (the primary users)
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