sediment

Free and exchangeable ammonium in sediments of the Parker River estuary

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.

Core Areas: 

Data set ID: 

250

Keywords: 

Short name: 

BEN-PR-Sed-NH4-Sal

Data sources: 

BEN-PR-Sed-NH4-Sal_csv
BEN-PR-Sed-NH4-Sal_xls

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

Maintenance: 

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

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