Weather at Toolik

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:	95bohypo
Dataset Title:	Hyporheic nutrient data for samples were collected from pools and riffle in the Kuparuk river reference zone 1995 at or below the 0.0km marker, Arctic LTER 1995.
Investigator 1:
First Name:	William
Last Name:	Bowden
Address line 1:
Address line 2:
Address line 3:
City:
State:
Zip Code:
Country:
Associate Investigators:	Kenneth Edwardson
Keywords:	hyporheic, nutrients, nitrate, Phosphate, ammonia, dissolved oxygen, temperature, conductivity, Kuparuk, reference, fertilized, Oksrukuyik, Imnavait
Abstract:	Hyporheic nutrient data for samples were collected from pools and riffle in the Kuparuk river reference zone 1995 at or below the 0.0km marker. Samples were collected from the 2.7km riffle in the Kuparuk river fertilized zone 1995. Samples were collected from point bars(fertilized zone) and a riffle(reference zone) in Oksrukuyik creek 1995. Samples were collected from riffles in Imnavait creek 1995.
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	95bohypo
Beginning Date	5/1/1995
End Date	9/1/1995
Number of Data Records
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes:	Log of changes: For Archival Use: DATA RECEIVED: June 1997 DATA FILE ENTERED BY: Karie Slavik DATA FILE VALIDATION: NAME: DATA:



RESEARCH LOCATION:
Geographic Description	Imnavait creek, Kuparuk reference and fertilized reaches, Oksrukuyik creek reference and fertilized reaches
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:	In the Kuparuk river and Oksrukuyik creek hyporheic samples were collected through hyporheic samplers installed to either a pool riffle pool sequence(Kuparuk fert. and ref, Oksrukuyik ref.) or a point bar(Oksrukuyik fert.). In Imnavait creek samples were drawn through stainless steel canulas. Well Construction/Installation: Hyporheic samplers consisted of a 1/8 inch O.D. stainless steel (S.S.) tube housed in a 3/4 inch CPVC pipe. At the lower end of the CPVC a rubber stopper was inserted with the S.S tube protruding ten centimeters. A coupler was then used to attach a length of well screen to protect the S.S. tube. Tygon tubing was slid onto the top end of the S.S tubing and a three-way Pharmaseal stopcock was inserted into the tubing. Samplers were inserted into the stream bed by forcing a pry bar into the stream bed to a depth of the maximum depth allowed, typically 30-60 centimeters. The sampler was then worked down into the hole and the pry bar removed, allowing the hole to backfill around the sampler. The length of the sampler, still above the substrate, was measured and subtracted from the total length to find the depth of the sampler in the substrate. Samplers were allowed to settle before any testing occurred. Sample collection: In Imnavait creek hyporheic samples were drawn out of the sediment with a 50 centimeter long, 1/8 inch O.D. stainless steel canula, machined to attach to a standard 60 mL syringe(Luer-lock). In all other streams samples were collected via a 60 mL syringe directly from the hyporheic sampler after drawing 30 mL out to purge the interior of the sampler. Samples were filtered through a 25 mm diameter 0.45 um cellulose acetate syringe filter in the field. Sample analysis: Specific conductivity was measured in the field on a VWR model 2052 conductivity meter. All chemical sample analysis was done within 24 hours of collection and stored cold during the interim period. Ammonia-nitrogen concentrations were determined by the phenate method. Nitrate-nitrogen was determined by cadmium reduction. Phosphate-phosphorous was determined by the ascorbic acid method. Dissolved oxygen was determined with a Solomat dissolved oxygen meter. Temperature was measured with a Omega 871 digital thermometer. Notes: For the Kuparuk River samples the series variables are: R=Right, L=Left, P=Pool, B=Bank. For Oksrukuyik Creek samples the series variables are: OCR=Oksrukuyik Creek Riffle, OCPB1= Oksrukuyik Creek Point Bar #1, Oksrukuyik Creek Point Bar #2. For the Imnavait Creek samples the series variables are: IC1=Imnaviat Creek series 1, and IC2= Imnavait Creek series 2. All distances are relative to the established river markings. (11) VARIABLE DESCRIPTIONS: Precision Coded? Missing Variable Variable Description Units (Y/N) Values Site River y n D/D River distance m n n Depth Depth of Sampler cm n y LatX Dist. from Bank(pool only) cm y y D-H Distance from Riffle Head m n y Date Date dd-mmm-yy n n Series Left, Right, Pool, or Bank y n Location Sampler Number y y NH4 Ammonia umoles/L n y NO3 Nitrate umoles/L n y PO4 Phosphate umoles/L n y SPC Conductivity umhos n y DO Dissolved Oxygen mg/L n y Temp Temperature Celsius n y Comments Comments Reference Citations: American Public Health Association. 1989. Standard methods for the examination of water and wastewater. 17th ed. American Public Health Association, American Water Works Association, and Water Pollution Control Federation, Washington, DC. Sampling Description. None

Data Table

Site		River							y	n
D/D		River distance				m		n	n
Depth	Depth of Sampler			cm		n	y
LatX		Dist. from Bank(pool only)	cm		y	y
D-H		Distance from Riffle Head	m		n	y	
Date		Date						dd-mmm-yy	n	n
Series	Left, Right, Pool, or Bank			y	n
Location	Sampler Number						y	y
NH4		Ammonia					umoles/L	n	y
NO3		Nitrate 					umoles/L	n	y
PO4 		Phosphate 				umoles/L	n	y
SPC		Conductivity				umhos	n	y
DO		Dissolved Oxygen			mg/L		n	y
Temp		Temperature				Celsius	n	y
Comments	Comments