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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:	94isrnut
Dataset Title:	Depth profiles of NO-3, NH-4 ,PO-4, TDN, PP, PN and PC for the I series in 1994, Arctic LTER 1994.
Investigator 1:
First Name:	Mike
Last Name:	Miller
Address line 1:
Address line 2:
Address line 3:
City:
State:
Zip Code:
Country:
Associate Investigators:	Neil Bettez, Eric Goldfarb, tech Smith
Keywords:	phosphorus, ammonia, nitrite, nitrate, TDN, PP, PN, PC, nutrients.
Abstract:	Depth profiles of NO-3, NH-4 ,PO-4, TDN, PP, PN and PC for the I series in 1994.
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	94isrnut
Beginning Date	5/1/1994
End Date	9/1/1994
Number of Data Records
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes:	Log of changes: For Archival Use: DATE RECEIVED: April, 1995 DATA FILE ENTERED BY: Neil Bettez DATA FILE VALIDATION: NAME: Neil Bettez DATE: May, 1995



RESEARCH LOCATION:
Geographic Description	I series
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 was filtered in the field using 47mm .045 um millipore HAE filters. Phosphorus, ammonia and nitrate/nitrite samples were kept at 4 C in amber HDPE bottles until being run on an ALP chem auto analyzer . Due to an unsatisfactory high detection limit for NH-4 on the AA ammonia was determined manually from July 11 until Aug 22 using Standard methods. TDN samples were stored frozen in LDPE bottles and shipped to MBL. Total dissolved organic was digested with potassium persulfate and determined on an alp chem autoanalyzer using a packed cadmium column and RFA method number AS303-S171-09 . Particulate Phosphorus, nitrogen and carbon samples were collected on pre-combusted 25 mm GF/F filters and stored frozen until processing, Particulate phosphorus was determined using methods of Stainton et al., (1974). Particulate Nitrogen and Carbon were dried in a desicator and run on a Perkin elmer CHN analyzer. Reference Citations: R.G. Wetzel & G.E. Likens. 1979. Limnological Methods. Saunders. Philadelphia. A quantification of low-level ammonia in freshwaters. Standard Methods 1985, p 382. Stainton, M.P. M.J. Capel, F.A.J.1974. Armstrong The chemical Analysis of fresh water. Fish Res. Board Can. Misc.Spec. Pub. 25: 67. 1974. Sampling Description. None

Data Table

Variable	Variable descrip.	Precis./Units		Coded		Missing
(Y/N)		Values
Site		site code					y	n
STATION	SITE OF MEASUREMENT			n	n
CODE		ISERIES CODE					y	y
DATE		Date			DD-MMM-YY	n	n
NH4		ammonia			uM			n		y
PO4		SRP			uM			n
NO3		nitrate			uM			n
TDN		total dissolved N	uM			y
TDP		total dissolved P	uM			y
PP		Particulate phosphorus	u moles/L		n		y
PN		Particulate Nitrogen	ug/l			n		y
PC		Particulate Carbon	ug/l			n		y
(12) CALCULATIONS
Variable		Formula