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:LTE-MP-NIN-porewater.08
Dataset Title:Nutrient concentrations from porewater samples at Spartina alterniflora-dominated salt marsh plots in North Inlet, Georgetown, SC.
Investigator 1: 
First Name:Jim
Last Name:Morris
Address line 1:Dept of Biological Sciences
Address line 2:
Address line 3:University of SC
City:Columbia
State:SC
Zip Code:29208
Country:USA
Investigator 2: 
First Name:Karen
Last Name:Sundberg
Address line 1:Baruch Marine Field Laboratory
Address line 3:PO Box 1630
City:Georgetown
State:SC
Zip Code:29442
Country:USA
Associate Investigators:Warren Hankinson
Keywords:LTER, PIE, Plum Island Ecosystems, South Carolina, North Inlet, nutrients, estuary, salt marsh, Spartina alterniflora, porewater, ammonium, phosphate, sulfide, chloride, iron, Southeast United States
Abstract:Nutrient concentrations from permanent porewater samplers in a Spartina alterniflora-dominated salt marsh in North Inlet, Georgetown, SC. There are six sites. Two sites are low marsh; four are high marsh. One site in the high marsh is fertilized with nitrogen and phosphorus. One site in the high marsh is located in a dieback. Sampling at the dieback site occurred from 2006-2010.
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/LTE/data/LTE-MP-NIN-porewater.csv
Data File Name LTE-MP-NIN-porewater
Beginning Date 12/1/1993
End Date 12/31/2012
Number of Data Records 16837
Other Files to Reference LTE-MP-porewater
Availability Status type 1
Quality Control Information
Maintenance Description Collections occur every month. Database is updated once annually, usually in the winter. Study and data collection are ongoing as of Jan 2013.
Log of Changes: Version 01:July 11, 2006 Level 3+ EML using Jim Laundre's Excel program
Version 02: January 10, 2007 data and metadata update
Version 03: March 13, 2008 Data and metadata update
Version 04: February 20, 2009 Data and metadata update
Version 05: January 13, 2010 Data and metadata update
Version 06: October 26, 2011 Data and metadata update
Version 07: January 12, 2012, 2011 data and metadata update, using MarcrosExportEML_HTML (working)pie_excel2007.xlsm 1/12/12 11:51AM for QA/QC to EML 2.1.0
Version 08: March 14, 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
 
RESEARCH LOCATION: LTE-MP-NIN-GIHM LTE-MP-NIN-GILM LTE-MP-NIN-OLHM LTE-MP-NIN-OLLM LTE-MP-NIN-DBHM  
Geographic Description Goat Island, North Inlet, Georgetown, SC; high marsh Spartina alterniflora plot level fertilization experiment (GIHM). The Goat Island sites are accessible from Clambank Rd. about 1/2mile south of Clambank Landing. A board walk connects the high marsh siteand the low marsh site. The North Inlet Estuary is located onthe southeastern coast of the United States, approximately 10 kilometers east of Georgetown, South Carolina. The North Inlet Estuary lies east of the uplands of Hobcaw Barony (also known as the Belle W. Baruch Property). To the north of the Estuary is the Debordieu Colony Property. North Inlet Estuary is a bar-built Class C type estuary (Pritchard, 1955) and is arelatively small tidal estuary (area = 2630 hectares). It is composed of numerous winding tidal creeks dominated bySpartina alterniflora and is considered a pristine tidal estuary due to minimal anthropogenic impacts. The watershed drains a 24.8 square kilometer area of mostly pine forest and a moderately developed residential watershed to the north. Goat Island, North Inlet, Georgetown, SC; low marsh Spartina alterniflora plot level fertilization experiment (GILM). The Goat Island sites are accessible from Clambank Rd. about 1/2mile south of Clambank Landing. A board walk connects the high marsh siteand the low marsh site. Oyster Landing, North Inlet, Georgetown, SC, accessible from the Baruch Marine Field Laboratory. This high marsh Spartina alterniflora plot level fertilization experiment (OLHM) is located on the north side of the causeway which leads to the landing. Oyster Landing, North Inlet, Georgetown, SC, accessible from the Baruch Marine Field Laboratory. This low marsh Spartina alterniflora plot level fertilization experiment (OLLM) is located just south of the pier. Sixty Bass Creek, North Inlet, Georgetown, SC, marsh die back site (DBHM) is accessible by boat from Clambank Landing.  
Location Bounding Box            
West Bounding Coordinate            
East Bounding Coordinate            
North Bounding Coordinate            
South Bounding Coordinate            
OR if single point location            
Latitude 33.331659 33.331603 33.351389 33.348102 33.322222  
Longitude -79.198208 -79.197942 -79.191944 -79.189171 -79.189722  
Elevation            
             
             
 
TAXONOMIC COVERAGE:
Taxonomic Protocols
Organisms studied Spartina alterniflora
 
Methods:Sampling Description:
Triplicate porewater diffusion samplers are permanently installed on the marsh platform in fertilized (26.7 mol N/m2/y and 12.3
mol P/m2/y) or control plots 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 (0.45 uM) or preserved with ZnAc (for sulfides) immediately upon return from the field.

Lab Methods:
Filtered porewater samples are analyzed for PO4, NH4, chloride and Fe (+2) concentrations according to standard laboratory protocols (Strickland and Parson 1972; Gibbs 1979). Unfiltered, preserved porewater samples are analyzed for sulfide (Cline 1969).

Data Table

Variable Name Variable Description Units Measurement Scale Code Information Number Type DateTime Format Missing Value Code Missing Value Code Explanation
SITE name of sampling station   nominal GI=Goat Island | OL=Oyster Landing | DB=Sixty Bass Dieback        
LOCATION location of sampling station   nominal HM=High Marsh | LM=Low Marsh        
YEAR year   datetime     yyyy    
MONTH month   datetime     mm    
TRT treatment   nominal NP=Fertilized | C=Control        
REP replicate   nominal          
DEPTH depth centimeter ratio   real      
PO4 phosphate concentration (uM-P) micromolePerLiter ratio   real   . | BD .=not measured | BD=below detection
NH4 ammonium concentration (uM-N) micromolePerLiter ratio   real   . | BD .=not measured | BD=below detection
S2 sulfide concentration (uM-S) micromolePerLiter ratio   real   . | BD .=not measured | BD=below detection
Cl chloride concentration (gCl/l) gramPerLiter ratio   real   . | BD .=not measured | BD=below detection
Fe2 iron (+2) concentration (uM-Fe+2) micromolePerLiter ratio   real   . | BD .=not measured | BD=below detection