Water chemistry data for various lakes near Toolik Research Station, Arctic LTER. Summer 1990 to 1999.

Abstract: 

Decadal file describing the water chemistry in various lakes near Toolik Research Station (68 38'N, 149 36'W) during summers from 1990 to 1999. Chemical analyses were conducted on samples from various depths in the sample lakes either once, or multiple times during the spring, summer and fall months (May to September). Chemical analyses for the samples include alkalinity, dissolved organic and inorganic carbon (DIC/DOC), inorganic and total dissolved nutrients (NH4, PO4, NO3, TDN, TDP), particulate carbon, nitrogen and phsphorous (PC, PN, PP), cations (Ca, Mg, K, Na and Si) and anions (SO4, Cl).

See methods for the yearly datsets which were combined into this data set.

Project Keywords: 

Data set ID: 

10164

EML revision ID: 

3
Published on EDI/LTER Data Portal

Citation Suggestion: 

Giblin, A., Kling, G. 1991. Water chemistry data for various lakes near Toolik Research Station, Arctic LTER. Summer 1990 to 1999. Environmental Data Initiative. http://dx.doi.org/10.6073/pasta/8db9af4d3fc6f66b200c26cc0256b7f8
People
Dates

Date Range: 

Tuesday, June 19, 1990 to Monday, August 16, 1999

Publication Date: 

Thursday, December 12, 1991

Methods: 

For water sampling protocols see the Arctic LTER Land-Water group protocol book accessible from the Land-Water mainpage on the Arctic LTER web page or at http://www-personal.umich.edu/~gwk and clicking on the protocol link at the bottom of the page. Specific methodologies are described in the protocol book listed above and a general description is provided below.
General analyses: In general water samples from soils, streams, and lakes are filtered in the field and kept cold and dark or preserved until analysis. Dissolved inorganic nutrients (NH4 and PO4) were analyzed by wet chemistry techniques at Toolik Field Station usually within 24 hours of sampling. Prior to 1999, the phenate method was used to analyze the ammonium content. In the years 1999-2001, a comparison study of the OPA method and the phenate method were performed. Starting in 2001, OPA was used to analyze ammonium content. Gas samples were analyzed at Toolik Field Station. DIC samples were acidified in the field and analyzed on a gas chromatograph at Toolik Field Station. DOC, TDN, TDP, particulate C, N, and P, and dissolved ions were brought back to the University of Michigan for analysis. DOC is analyzed on a Shimadzu TOC-5000. Particulate Carbon and Nitrogen on a Perkin Elmer CHN 2400, TDN is analyzed on a Shimadzu TOC-5000 or using a persulfate digestion. TDP and NO3 are analyzed on an OI Alpkem autoanalyzer, ions on a Dionex ion chromatograph, and cations on an inductively coupled plasma optical emission spectrometer (ICP-OESPerkin Elmer Optima 4300 or 8000). Alkalinity samples were run on a Radiometer autotitrator either at Toolik Field Station or at the University of Michigan.
For all analyses, sample values that were less than zero were assigned a value of zero. See specific protocols for limits of detection. Missing values (not sampled or analyzed) are represented by a period " . " in the dataset.
The following data sets were combined into this data set:

Data Set ID File name Tittle
10158 1990_ArcticLTER_Lakes_nuts.csv Nutrient and chemical data for various lakes near Toolik Research Station, Arctic LTER, Summer 1990.
10159 1991_ArcticLTER_Lakes_nuts.csv Nutrient and chemical data for various lakes near Toolik Research Station, Arctic LTER, Summer 1991.
10160 1992_ArcticLTER_Lakes_nuts.csv Nutrient and chemical data for various lakes near Toolik Research Station, Arctic LTER, Summer 1992.
10161 1993_ArcticLTER_Lakes_nuts.csv Nutrient and chemical data for various lakes near Toolik Research Station, Arctic LTER, Summer 1993.
10162 1994_ArcticLTER_Lakes_nuts.csv Nutrient and chemical data for various lakes near Toolik Research Station, Arctic LTER, Summer 1994.
10165 1995_ArcticLTER_Lakes_nuts.csv Nutrient and chemical data for various lakes near Toolik Research Station, Arctic LTER, Summer 1995.
10178 1996_ArcticLTER_Lakes_nuts.csv Nutrient and chemical data for various lakes near Toolik Research Station, Arctic LTER, Summer 1996.
10246 1997_ArcticLTER_Lakes_nuts.csv Nutrient and chemical data for various lakes near Toolik Research Station, Arctic LTER, Summer 1997.
10163 1998_ArcticLTER_Lakes_nuts.csv Nutrient and chemical data for various lakes near Toolik Research Station, Arctic LTER, Summer 1998.
10164 1999_ArcticLTER_Lakes_nuts.csv Nutrient and chemical data for various lakes near Toolik Research Station, Arctic LTER, Summer 1999.

Sites sampled.

Download a comma delimited (csv) or Excel file (includes metadata and data sheets).

Use of the data requires acceptance of the data use policy --> Arctic LTER Data Use Policy

To cite this data set see the citation example on the LTER Network Data Portal page for this data set.