Plum Island Ecosystems 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

Dataset URLs:METADATA: HTML, Rich Text, XML(EML compliant)
DATA: Comma Delimited, Excel file with Metadata and data
Dataset ID:BEN-PR-Sed-NH4-Sal.01
Dataset Title:Free and exchangeable ammonium in sediments of the Parker River estuary
Investigator 1: 
First Name:Nathaniel
Last Name:Weston
Address line 1:Dept. of Geography and the Environment
Address line 2:Villanova University
Address line 3:800 Lancaster Avenue
City:Villanova
State:PA
Zip Code:19085
Country:USA
Investigator 2: 
First Name:Anne
Last Name:Giblin
Address line 1:Ecosystems Center
Address line 2:MBL
Address line 3:7 MBLSt
City:Woods Hole
State:MA
Zip Code:02543
Country:USA
Investigator 3: 
First Name:Chuck
Last Name:Hopkinson
Address line 1:
Address line 2:University of Georgia
Address line 3:229 Marine Sciences
City:Athens
State:GA
Zip Code:30602
Country:USA
Associate Investigators:Jane Tucker, Josh Goldstein, Greg Peterson, Dave Vasiliou
Keywords:PIE LTER, Massachusetts, Parker River, inorganic nutrients, sediment, benthos, porewater, ammonium, porosity, bulk density, adsorption
Abstract:Comparison of NH4+ freely available in sediment porewater to NH4+ exchangeable from sediments, and the variabilty with porewater salinity as it changes with season and along a transect of the Parker River estuary.
Contact: Plum Island Ecosystems LTER Information Manager
The Ecosystems Center
Marine Biological Lab
7 MBL St
Woods Hole, MA 02543
Phone (508) 289 7485
Email: pie_im@mbl.edu
Online URL: http://ecosystems.mbl.edu/PIE/
DATA FILE INFORMATION:
Data File URL http://ecosystems.mbl.edu/PIE/data/BEN/data/BEN-PR-Sed-NH4-Sal.csv
Data File Name BEN-PR-Sed-NH4-Sal
Beginning Date 3/18/1999
End Date 5/2/2000
Number of Data Records 440
Other Files to Reference
Availability Status Type 1
Quality Control Information
Maintenance Description
Log of Changes: Version 01: 14Sep2013, metadata and data created to comply with importation to Drupal and LTER PASTA. Used MarcrosExportEML_HTML (working)pie_excel2007_Sep2013.xlsm 9/10/13 12:02 PM for QA/QC to EML 2.1.0
 
RESEARCH LOCATION: BEN-PR-P22 BEN-PR-P24 BEN-PR-P14 BEN-PR-P11 BEN-RO-R5.5  
Geographic Description Benthic flux station, Parker River upper estuarine portion near Triton High School, Newbury, MA Benthic porewater and solid phase sediment station, Parker River upper reach below Central Street Dam, Newbury, MA Benthic flux station, Parker River downstream of Mill River confluence, Newbury, MA Benthic porewater and solid phase sediment, Parker River lower reach, Town Landing, Newbury, MA Benthic flux station, Hog Island Point off mouth of Rowley River, Rowley, MA  
Location Bounding Box            
West Bounding Coordinate            
East Bounding Coordinate            
North Bounding Coordinate            
South Bounding Coordinate            
OR if single point location            
Latitude 42.749889 42.75085 42.754838 42.761298 42.727187  
Longitude -70.917329 -70.92756 -70.872904 -70.838606 -70.813637  
Elevation            
             
             
 
TAXONOMIC COVERAGE:
Taxonomic Protocols
Organisms studied
 
Methods:EXPERIMENTAL DESIGN AND METHODS:
Sediment cores were obtained in the field and transported to the laboratory for analysis within 24 hr. Four cores from each stations were sectioned by depth . Porewater was removed from two of the four cores by centrifugation and analyzed for free NH4+. Sediment sections from the other two cores were extracted with 2N KCL, then centrifuged and analyzed for exchangeable NH4+. Separate subsamples were used to determine porosity and bulk density.

(see Weston et al. 2010. The effects of varying salinity on ammonium exchange in estuarine sediments of the Parker River, Massachusetts. Estuaries and Coasts 33: 985-1003).


Site (Current Name) , Site (Previous Name)
BEN-PR-P22, BEN-PR-P2
BEN-PR-P24 , BEN-PR-P1
BEN-PR-P14 , BEN-PR-P5
BEN-PR-P11 , BEN-PR-TL
BEN-RO-R5.5 , BEN-SO-Row

Data Table

Variable Name Variable Description Units Measurement Scale Code Information Number Type DateTime Format Missing Value Code Missing Value Code Explanation
DATE date of sample collection   datetime     dd-mon-yyyy NA NA = sample not taken - not analyzed or lost
STATION-CURRENT current name of sampling station, following naming protocol   nominal       NA NA = sample not taken - not analyzed or lost
STATION-PREVIOUS name of sampling station prior to establishment of naming protocol   nominal       NA NA = sample not taken - not analyzed or lost
River Km kilometer distance, mid-channel, upstream from mouth of Plum Island Sound (RK= 0) kilometer interval   real   NA NA = sample not taken - not analyzed or lost
LAT Latitude in NAD 83 geographic coordinates (decimal degrees) degree interval   real   NA NA = sample not taken - not analyzed or lost
LON Longitude in NAD 83 geographic coordinates (decimal degrees) degree interval   real   NA NA = sample not taken - not analyzed or lost
INT TOP depth of top of sediment section (cm) centimeter interval   real   NA NA = sample not taken - not analyzed or lost
INT BOT depth of bottom of sediment section (cm) centimeter interval   real   NA NA = sample not taken - not analyzed or lost
DEPTH average depth of sediment increment of section sampled (cm) centimeter interval   real   NA NA = sample not taken - not analyzed or lost
SAL salinity (ppt) partPerThousand interval   real   NA NA = sample not taken - not analyzed or lost
NH4 porewater ammonium (ÁM-N) micromolePerLiter ratio   real   NA NA = sample not taken - not analyzed or lost
EXCH NH4 exchangeable ammonium (Ámole N cm-3 of sediment) micromolePerCentimeterCubed ratio   real   NA NA = sample not taken - not analyzed or lost
%C percent carbon of bulk sediment percent ratio   real   NA NA = sample not taken - not analyzed or lost
%N percent nitrogen of bulk sediment percent ratio   real   NA NA = sample not taken - not analyzed or lost
POR sediment porosity (g water cm-3) gramPerCentimeterCubed ratio   real   NA NA = sample not taken - not analyzed or lost
BD sediment bulk density (g dry sediment cm-3) gramPerCentimeterCubed ratio   real   NA NA = sample not taken - not analyzed or lost