LTER network Toolik Field Station MBLhome page

Weather at Toolik

Toolik Weather Graphs

Arctic LTER Weather Stations

Toolik Webcam

Animated Gif of yesterday's Webcam

Arctic LTER Inhouse login

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:2001fog4chlr
Dataset Title:Total Chlorophyll a for Lake FOG 4 during the summer of 2001 , Arctic LTER 2001.
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, Shelley Schmidt
Keywords:
Abstract: Total Chlorophyll a for Lake FOG 4 during the summer of 2001
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 2001fog4chlr
Beginning Date 5/1/2001
End Date 9/1/2001
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: November 2001 DATA FILE ENTERED BY: Neil Bettez DATA FILE VALIDATION: NAME: Neil Bettez DATE: November 2001
RESEARCH LOCATION:
Geographic Description Toolik Lake
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 filtered
in the field though a Millipore 47 mm filter cassette (SX0004700)containing a
Whatman GF/C glass fiber. This filter was then returned to the lab where it was
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		g/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.