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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:	2000e1chlr
Dataset Title:	Total Chlorophyll a for Lake E1 during the summer of 2000 , Arctic LTER 2000.
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, Aura Thompson
Keywords:
Abstract:	Total Chlorophyll a for Lake E1 during the summer of 2000
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	2000e1chlr
Beginning Date	5/1/2000
End Date	9/1/2000
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, F45T5, 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 2000 DATA FILE ENTERED BY: Neil Bettez DATA FILE VALIDATION: NAME: Neil Bettez DATE: September 2000



RESEARCH LOCATION:
Geographic Description	Lake E1
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 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)