Weather at Toolik

Arctic LTER Database

Acceptance and utilization of LTER data requires that:

(1) The Principal Investigator be sent a notice stating reasons for acquiring any data and a description of the publication intentions.
(2) The Principal Investigator of the data set be sent a copy of the report or manuscript prior to submission and be adequately cited in any resultant publications.
(3) A copy of any resultant publications should be sent to:

Principal Investigator
Ecosystems Center
Marine Biological Laboratory
7 MBL St.
Woods Hole, MA 02543

Older Metadata: Attribute table not in XML (EML) file

Dataset URLs:	METADATA: HTML, Rich Text, XML(EML compliant) DATA: Comma Delimited, Excel file with Metadata and data
Dataset ID:	99peknut
Dataset Title:	Nutrients from the Kuparuk River during the summer of 1999, Arctic LTER 1999.
Investigator 1:
First Name:	Bruce
Last Name:	Peterson
Address line 1:
Address line 2:
Address line 3:
City:
State:
Zip Code:
Country:
Associate Investigators:	Karie Slavik
Keywords:	phosphorus, nitrate, ammonium, PO4, NO3, NH4, nutrients, Kuparuk, River
Abstract:	Nutrients from the Kuparuk River during the summer of 1999.
Contact:	Arctic LTER Information Manager The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole, MA 02543 Phone (508) 289 7496 Email: arc_im@mbl.edu Online URL: http://ecosystems.mbl.edu/ARC/
DATA FILE INFORMATION:
Data File Name	99peknut
Beginning Date	5/1/1999
End Date	9/1/1999
Number of Data Records
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes:	Log of changes: For Archival Use: DATE RECEIVED: October, 1999 DATA FILE ENTERED BY: Karie Slavik DATA FILE VALIDATION: NAME: Karie Slavik DATE: October, 1999



RESEARCH LOCATION:
Geographic Description	Kuparuk River, North Slope of Alaska
Location Bounding Box
West Bounding Coordinate
East Bounding Coordinate
North Bounding Coordinate
South Bounding Coordinate
OR if single point location
Latitude
Longitude



TAXONOMIC COVERAGE:
Organisms studied

Methods:	Water samples collected at designated sites along the Kuparuk river were analyzed at Toolik for soluble reactive phosphate, ammonium, using manual chemistry methods listed in the LTER database protocols. Ammonium was also analyzed using a fluorometric method (Holmes et al. 1999). Nitrate/nitrite were run on a Lachat in Woods Hole. Notes: There are two ammonium values reported in this data file: one produced using the phenol hypochlorite (detection limit 0.1µM) and another using the Holmes et al. method (detection limit unknown at this time). Detection limits for SRP and Nitrate were 0.05µM and 0.08µM, respectively. Reference Citations: R.G. Wetzel & G.E. Likens. 1979. Limnological Methods. Saunders. Philadelphia. APHA. 1985. Standard Methods. Boyd. Albany. R.M. Holmes, A. Aminot, r. Kerouel, B.A. Hooker, and B.J. Peterson. 1999. A simple and precise method for measuring ammonium in marine and freshwater ecosystems. Can. J. Fish. Aquat. Sci. 56: 1-8. Sampling Description. None

Data Table

Variable    Variable descrip.            Precis./Units
SITE        site of measurement
SYSTEM      site of measurement (named)
DATE        Date                           DD-MMM-YY
D/D         Station on river        km from 1983 dripper
PO4         phospate                       uM/L
NO3         nitrate                        uM/L
NH4         ammonia                        uM/L
(12) CALCULATIONS
Variable        Formula