PRINCIPAL INVESTIGATOR
      Charles T. Driscoll
      Syracuse University

OTHERS INVOLVED
      see References

BEGIN DATE
      January 1984

END DATE
      On-going

LOCATION
      Adjacent to HBEF watershed 6

LOCATION DESCRIPTION
       Tension-free lysimeters are installed in the Oa, Bh and Bs horizons at 3 sites located adjacent to watershed 6 at elevations of 750m (spruce-fir-white beech zone; SFB), 730m (high elevation hardwood zone; HH) and 600m (low elevation hardwood zone; LH). Three replicate lysimeters were installed beneath the Oa and Bh horizons and within the Bs horizon at the HH and LH sites, and two replicate lysimeters were installed in each horizon at the SFB site.

DATA DESCRIPTION
       Between 1984 and 1986 data are the arithmetic means for samples collected from individual lysimeters. From 1986, data are for bulked soil solutions collected from replicate lysimeters.

SAMPLING DESIGN
       The lysimeters were constructed from either polyethylene funnels filled with acid-washed silica sand that drain into 1-L polyethylene containers or rectangular polyethylene containers filled with acid-washed Teflon beads that drain into 2-L polyethylene bottles. At each site, lysimeters were carefully installed in the wall of excavated soil pits, immediately below the Oa and Bh horizons and within the lower Bs horizon. Soil pits were backfilled to prevent accumulation of water and to eliminate freezing during winter months. Soil solution samples are collected approximately monthly in acid-washed polyethylene bottles and refrigerated at 4oC.

REFERENCES

• Dahlgren R. A. and Driscoll C. T. (1994). The effects of whole-tree clear-cutting on soil processes at the Hubbard Brook Experimental Forest, New Hampshire, USA. Plant Soil 158: 239-262.
• Driscoll C. T., R. D. Fuller and D. M. Simone (1988). Longitudinal variations in trace metal concentrations in a northern hardwood forested ecosystem. J. Environ. Qual. 17(1): 101-107.
• Johnson C. E., Driscoll C. T., T. G. Siccama and G. E. Likens (2000). Element fluxes and landscape position in a northern hardwood forest watershed ecosystem. Ecosystems 3: 159-184.

ACCESS
      Public from January 1984 to December 1995. 5-year withholding policy in effect for these data.

DATA LOCATION
      Dept. of Civil & Environmental Engineering, Syracuse University, Syracuse, NY.

LAST UPDATED
      May, 2001

CONTACT PERSON
      Charles Driscoll
      Dept. of Civil & Environmental Engineering
      220 Hinds Hall
      Syracuse, NY 13244
      Telephone: (315) 443-2311
      E-mail: ctdrisco@mailbox.syr.edu

VARIABLES
      Columns: supplied with the following headers:
            date - sample date
            ws - watershed
            elev - elevation
            hor - horizon
            pH
            Na+ - sodium concentration in umol/L
            K+ - potassium concentration in umol/L
            Ca2+ - calcium concentration in umol/L
            Mg2+ - magnesium concentration in umol/L
            Alt - total aluminum concentration in umol/L
            Alm - total monomeric aluminum in umol/L
            Alo - organic monomeric aluminum in umol/L
            NH4+ - ammonium concentration in umol/L
            H4SiO4 - dissolved silica concentration in umol/L
            Cl- - chloride concentration in umol/L
            NO3- - nitrate concentration in umol/L
            SO42- - sulfate concentration in umol/L
            F- - total fluoride concentration in umol/L
            DIC - dissolved inorganic carbon in umol/L
            DOC - dissolved organic carbon in umol/L
            TN - total nitrogen in umol/L

CODES
      Missing data are coded with -3.0

DATA FILE NAME(S)
ASCII file name: w6lysim.txt