Spartina alterniflora

Porewater nutrient concentrations from control plots in a Spartina alterniflora-dominated salt marsh at Goat Island, North Inlet, Georgetown, SC.

Abstract: 

Porewater samples from a Spartina alterniflora-dominated salt marsh on Goat Island, North Inlet, Georgetown, SC were analyzed for ammonium, phosphate, sulfide and chloride concentrations.

Core Areas: 

Data set ID: 

133

Keywords: 

Short name: 

LTE-MP-NAC-porewatermeans

Purpose: 

 

Data sources: 

LTE-MP-NAC-porewatermeans_csv
LTE-MP-NAC-porewatermeans_xls

Methods: 

General:
This data set is part of an on-going  project in a Spartina alterniflora-dominated marsh at the Baruch Marine Field Laboratory in North Inlet, Georgetown, SC.

Sampling Description:
Triplicate porewater diffusion samplers are permanently installed in control plots on the marsh platform in a Spartina alterniflora-dominated salt marsh in North Inlet, SC.  Each sampler collects porewater from depths of 10, 25, 50, 75, and 100 cm.  Samples are retrieved monthly.  Porewater samples are either filtered (0.2 uM; for PO4 and NH4) or preserved unfiltered with ZnAc (for sulfides) either in the field or immediately upon return from the field.  Porewater collection  began in Jan 1994. 

Lab Methods:
Filtered porewater samples are analyzed for PO4, NH4, and chloride concentrations according to standard laboratory protocols (Strickland and Parson 1972) and for chloride concentrations by coulimetric tritration using a Haake-Buchler chloridometer.  Unfiltered, preserved porewater samples are analyzed for sulfide  colorimetrically (Cline 1969).

Numerical Processing:
Data are reported as geometric means of sample concentrations from 3 depths within the root zone (10, 25, and 50 cm), and the 95% confidence interval, for 3 replicate samplers (n=9 per time).  Statistics were computed using SAS (SAS System for Windows; release 8.02; SAS Institute, Inc; Cary, NC).

Elevation:
LTE-MP-NIN-GIHM, ~ 0.5 meters NAVD88

 

Maintenance: 

Collections occur approximately every month.
Database is updated seasonally.
Study and data collection are ongoing as of Jan 2018.
Version 01; new data and metadata
Version 02; new data and metadata
Version 03: February 2, 2012, updated data and metadata to Dec 2011. Used MarcrosExportEML_HTML (working)pie_excel2007.xlsm 2/1/12 5:00 PM for QA/QC to EML 2.1.0
Version 04: August 8, 2013, 2012 data and metadata updated to comply with importation to Drupal and LTER PASTA. Research location name and description updated.Used MarcrosExportEML_HTML (working)pie_excel2007.xlsm 3/14/13 12:02 PM for QA/QC to EML 2.1.0
Version 05: April 23, 2014, 2013 data and metadata updated to comply with importation to Drupal and LTER PASTA.Used MarcrosExportEML_HTML (working)pie_excel2007_Sep2013.xlsm 9/30/13 02:57 PM for QA/QC to EML 2.1.0
Version 06: February 18, 2015, data and metadata updates to comply with importation to Drupal and LTER PASTA. Used MarcrosExportEML_HTML (working)pie_excel2007_Jan2015.xlsm 1/15/15 4:26 PM for QA/QC to EML 2.1.0
Version 07: May 27, 2015, edited distribution URL, data and metadata updates to comply with importation to Drupal and LTER PASTA. Used MarcrosExportEML_HTML (working)pie_excel2007_Jan2015.xlsm 1/15/15 4:26 PM for QA/QC to EML 2.1.0
Version 08: February 24, 2016, data and metadata updates to comply with importation to Drupal and LTER PASTA. Used MarcrosExportEML_HTML (working)pie_excel2007_Jan2015.xlsm 1/15/15 4:26 PM for QA/QC to EML 2.1.0
Version 09: March 7, 2016, edited incorrect BD and "." values, data and metadata updates to comply with importation to Drupal and LTER PASTA. Used MarcrosExportEML_HTML (working)pie_excel2007_Jan2015.xlsm 1/15/15 4:26 PM for QA/QC to EML 2.1.0
Version 10: September 15, 2017, edited multiple missing value code issues, data and metadata updates to comply with importation to Drupal and LTER PASTA. Used MarcrosExportEML_HTML (working)pie_excel2007_Jun2017.xlsm 6/15/17 10:23 AM for QA/QC to EML 2.1.0
Version 11: June 21, 2018, data and metadata updated to comply with importation to Drupal and LTER PASTA. Used MarcrosExportEML_HTML (working)pie_excel2007_Jan2018.xlsm 1/30/2018 2:24 PM for QA/QC to EML 2.1.0

 

Additional information: 

 

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