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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:
City:
State:
Zip Code:
Country:
Associate Investigators:Neil Bettez, Amanda Floyd
Keywords:
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
Email: arc_im@mbl.edu
Online URL: http://ecosystems.mbl.edu/ARC/
DATA FILE INFORMATION:
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
RESEARCH LOCATION:
Geographic Description S6
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 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.
Philadelphia.

Sampling Description.

None

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
(12) CALCULATIONS
Variable					Formula
Total chlor a ug/L in sample = (ug ml acetone)*(ml Acetone/ml filtered)

Please contact arc_im@mbl.edu with questions, comments, or for technical assistance regarding this web site.