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Arctic LTER Database

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:2002s6chlr
Dataset Title:Total Chlorophyll a for Lake S6 during the summer of 2002 , Arctic LTER 2002.
Investigator 1: 
First Name:Anne
Last Name:Giblin
Address line 1:
Address line 2:
Address line 3:
Zip Code:
Associate Investigators:Neil Bettez, Amanda Floyd
Abstract: Total Chlorophyll a for Lake S6 during the summer of 2002
Contact: Arctic LTER Information Manager
The Ecosystems Center
Marine Biological Lab
7 MBL St
Woods Hole, MA 02543
Phone (508) 289 7496
Online URL:
Data File Name 2002s6chlr
Beginning Date 5/1/2002
End Date 9/1/2002
Number of Data Records
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes: Log of changes: 1. A Turner 111 fluorometer was used from 1975-1991. 2. A Turner 450 Fluorometer using a NB 440 filter was used starting in 1992- 1994. 3. A Turner 450 Fluorometer using a NB 430 filter was used starting in 1995 until 1998. 4. Starting in 1998 a Turner Designs 10-Au -005 -CE configured with a chlorophyll optical kit: photomultiplier tube 185 - 870; lamp daylight white, F25T5, 400-600 nm; excitation filter 340-500 nm round bandpass 5-60; emission filter >665 nm round sharpcut 2-64; reference filter 400-700 nm square 1 ND,was used to measure chlorophyll. For Archival Use: DATE RECEIVED: September 2002 DATA FILE ENTERED BY: Neil Bettez DATA FILE VALIDATION: Chris Crockett NAME: Neil Bettez DATE: September 2002
Geographic Description S6
Location Bounding Box
West Bounding Coordinate
East Bounding Coordinate
North Bounding Coordinate
South Bounding Coordinate
OR if single point location
Organisms studied

Water samples were collected at 0, 1, 3, 5, 8, 12, and 16-meter depths in the monitoring lakes and 0 meters in the survey lakes. The water was returned to the lab where it was filtered through a 47 mm Whatman GF/C glass fiber filter. The filters were then placed in 10 ml of buffered 90% acetone (1 mg/l MgCO-3), and extracted in the dark, at room temperature for 24 hours. The
amount of chlorophyll a was determined using a Turner Designs 10-Au -005 -CE
configured with a chlorophyll optical kit (10-037R). This kit is used for the
traditional in-vivo measurement of chlorophyll (Lorenzen) and in-vivo
/extractive acidification methods, including Strickland and parsons, standard
methods for water and waste water and EPA 445.

Notes: The Turner Designs 10-Au -005 -CE fluorometer was calibrated using two
chlorophyll a standards of known concentrations obtained from Turner Designs.
Each time samples were run the Turner Designs 10-AU fluorometer solid standard
was also run.

Reference Citations: R.G. Wetzel & G.E. Likens. 1979. Limnological Methods. Saunders.

Sampling Description.


Data Table

Variable		Variable descrip.		Precis. / Units	Coded	Missing
(Y/N)	Values
Site		site code					y	n
Lake		Site of measurement				n	n
DEPTH		Depth				meters		n	n
DATE		Date				DD-MMM-YY	n	n
Chlor a		Total Chlorophyll		ug/L		n	n
Notes		Notes				N/A		n	y
Variable					Formula
Total chlor a ug/L in sample = (ug ml acetone)*(ml Acetone/ml filtered)

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