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:
Marine Biological Laboratory
7 MBL St.
Woods Hole, MA 02543
|Dataset URLs:||METADATA: HTML, Rich Text, XML(EML compliant)|
DATA: Comma Delimited, Excel file with Metadata and data
|Dataset Title:||Depth profiles of NO-3, NH-4 ,PO-4, TDN, PP, PN and PC for Lake S2 in 1995, Arctic LTER 1995.|
|Investigator 1:|| |
|Address line 1:|
|Address line 2:|
|Address line 3:|
|Associate Investigators:||Neil Bettez, Gretchen Gettel, Mark Dornblaser, 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 Lake S2 in 1995.|
|Contact:||Arctic LTER Information Manager
The Ecosystems Center
Marine Biological Lab
7 MBL St
Woods Hole, MA 02543
Phone (508) 289 7496
Online URL: http://ecosystems.mbl.edu/ARC/
|DATA FILE INFORMATION:|
|Data File Name||95s2nuts|
|Number of Data Records|
|Other Files to Reference|
|Quality Control Information|
|Log of Changes:||Log of changes: For Archival Use: DATE RECEIVED: September, 1995 DATA FILE ENTERED BY: Neil Bettez DATA FILE VALIDATION: NAME: Neil Bettez DATE: September, 1995|
|Geographic Description||Lake S2|
|Location Bounding Box|
|West Bounding Coordinate|
|East Bounding Coordinate|
|North Bounding Coordinate|
|South Bounding Coordinate|
|OR if single point location|
Water samples were collected at depths 0,1,3,5,8,12,16 meters with a Van Dorn. 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 .
TDN samples were fixed with 1 ul/ml 6N HCL and shipped to MBL. Total dissolved organic N
was digested with potassium persulfate and determined on an alp chem autoanalyzer using a packed
cadmium column and RFA method number AS303-S171-09 .
TDP samples were fixed with 1 ul/ml 6N HCL and shipped to MBL. Total dissolved organic P
was digested with potassium persulfate and determined on an alp chem autoanalyzer using RFA methods
Particulate Phosphorus, nitrogen and carbon samples were collected on precombusted 25 mm
GF/F filters. Fiters were dried overnight at 55 C prior to shipment and stored in ziplock freezer bags.
Particulate phosphorus was determined using methods of Stainton et al., (1974).
Particulate Nitrogen and carbon were 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.
Variable Variable descrip. Precis./Units Coded Missing (Y/N) Values SITE site of measurement site code y Lake Lake sampled n Depth depth sampled meters n DATE Date DD-MMM-YY n NH4 ammonia uM n y PO4 SRP uM n NO3 nitrate uM n TDN total dissolved N uM n TDP total dissolved P uM n 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