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:MAR-RO-Marker-Horizon.03
Dataset Title:Marsh surface marker horizon measurements at each Surface Elevation Table (SET) site.
Investigator 1: 
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 2: 
First Name:Charles
Last Name:Hopkinson
Address line 1:Georgia Sea Grant College Program
Address line 2:University of Georgia
Address line 3:229 Marine Sciences
City:Athens
State:GA
Zip Code:30602
Country:USA
Associate Investigators:Corey Lawrence, Joshua Goldstein, Vinton Valentine, Charles Hopkinson, Hap Garritt, William Lee, Aaron Strong, Rebecca Prosser, Colin Millar, Catherine Caruso, Samuel Kelsey
Keywords:PIE LTER, disturbance, surface elevation table, SET, sedimentation, accretion, marker horizons, erosion, marsh elevation
Abstract:Marker Horizon depths at each Surface Elevation Table site. Marker horizons are commonly used in conjunction with the SET. Marker horizons measure vertical accretion which predominantly incorporates Surface Processes.
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/MAR/data/MAR-RO-Marker-Horizon.csv
Data File Name MAR-RO-Marker-Horizon
Beginning Date 12/7/2000
End Date 4/14/2011
Number of Data Records 144
Other Files to Reference MAR-RO-SET.xls
Availability Status Type 1
Quality Control Information
Maintenance Description
Log of Changes: Version 01, initial Excel EML file
Version 02, Updated data through Fall 2009 12/1/2009
Version 03: January 19, 2012, updated data and metadata through Spring 2011. Used MarcrosExportEML_HTML (working)pie_excel2007.xlsm 1/18/12 4:51 PM for QA/QC to EML 2.1.004).
 
RESEARCH LOCATION: Site 1 Site 2 Site 3 Site 4 Site 5 Site 6 Site 7 Site 8 Site 9 Site 10 Site 11 Site 12  
Geographic Description Holy Island SET 1 Holy Island SET 2 Holy Island SET 3 Laws Point SET 1 Laws Point SET 2 Laws Point SET 3 Levine’s SET 1 Levine’s SET 2 Levine’s SET 3 Morris Island SET 1 Morris Island SET 2 Morris Island SET 3  
Location Bounding Box                          
West Bounding Coordinate                          
East Bounding Coordinate                          
North Bounding Coordinate                          
South Bounding Coordinate                          
OR if single point location                          
Latitude 42.73118814 42.7305772 42.73009768 42.73157969 42.7312578 42.73069447 42.72733649 42.7279038722222 42.7282771916667 42.72912254 42.72923966 42.72942128  
Longitude -70.82625404 -70.82672061 -70.82693638 -70.84149472 -70.84219796 -70.84275403 -70.85228593 -70.8525714083333 -70.8526065444444 -70.83472098 -70.83544812 -70.836324  
Elevation 1.36 1.45 1.69 1.39 1.4 1.7 1.68     1.18 1.07 1.13  
                           
                           
 
TAXONOMIC COVERAGE:
Taxonomic Protocols
Organisms studied
 
Methods:Marker Horizons are a thin layer of Feldspar. Marker Horizons depths are measured each spring and fall. Each SET site has one Marker Horizon; three replicate cores are taken from each horizon during samplings. The depth of sediment accreted above the feldspar marker is measured on 4 side of the rectangular core using calipers. Measurements are made to the top of the feldspar layer. Cores are replaced after the measurements have been made.
The values recorded in the data file represent sediment above marker horizon at the time of measurement. It is important to note that different cores are taken during each measurement, thus core A on date “X” can not be to compared to core A on date “Y”. For comparisons over time, measurements should be averaged over all “cores” and “replicates” for each individual SET.
Cores or “Plugs” are taken from each horizon using a kitchen knife. This method is not ideal for several of our more wet sites. There is a high probability of erroneous measurement in sites that are very wet. We are working on a better method for sampling. For more information on SET and Marker Horizons see: http://www.pwrc.usgs.gov/set

RESEARCH LOCATION: Latitude and Longitude reported as decimal degrees in the NAD 83 Datum. Elevation is reported as NAVD 88, orthometric height (meters), and is currently an unprocessed measurement of the SET insert pipe. For more information please contact Aaron Strong (astrong@mbl.edu). Locations for Levine’s SET 2-3 are not available at this time.
Site SET # Marker Horizon LAT LONG Elevation Marsh Type Dominant Vegetation
Installation Date
Holy Island 1 04/30/03 42.73118814 -70.82625404 1.36 Low Spartina alterniflora (short)
Holy Island 2 04/30/03 42.7305772 -70.82672061 1.45 Transition Spartina alterniflora (short)
Holy Island 3 04/30/03 42.73009768 -70.82693638 1.69 High Spartina patens
Laws Point 1 12/7/2000 42.73157969 -70.84149472 1.39 Low Spartina alterniflora (short)
Laws Point 2 12/7/2000 42.7312578 -70.84219796 1.40 Transition Spartina alterniflora (short)
Laws Point 3 12/7/2000 42.73069447 -70.84275403 1.70 High Spartina patens
Levine’s 1 12/7/2000 42.72733649 -70.85228593 1.68 Low Spartina patens
Levine’s 2 12/7/2000 High Spartina alterniflora (short)
Levine’s 3 12/7/2000 High Spartina patens
Morris Island 1 05/01/03 42.72912254 -70.83472098 1.18 Low Spartina alterniflora (tall)
Morris Island 2 05/01/03 42.72923966 -70.83544812 1.07 Low Spartina alterniflora (tall)
Morris Island 3 05/01/03 42.72942128 -70.836324 1.13 Low Spartina alterniflora (tall)

Data Table

Variable Name Variable Description Units Measurement Scale Code Information Number Type DateTime Format Missing Value Code Missing Value Code Explanation
Date Installed Date marker horizon was installed   datetime     dd-mmm-yyyy   blank cell
Site Location of transect   nominal         blank cell
SET # SET # in transect (1-3)   nominal         blank cell
Core Replicate core number of each Marker Horizon (1-3)   nominal         blank cell
Rep Replicate measurement number of each core (1-4)   nominal         blank cell
Depth Fall 2002 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Spring 2003 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Fall 2003 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Spring 2004 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Fall 2004 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Spring 2005 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Fall 2005 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Spring 2006 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Fall 2006 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Spring 2007 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Fall 2007 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Spring 2008 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Fall 2008 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Spring 2009 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Fall 2009 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Spring 2010 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Fall 2010 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Depth Spring 2011 Measurement of feldspar depth from surface of core millimeter ratio   real     blank cell
Comments Information pertaining to individual data points   nominal         blank cell