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-Transects.02
Dataset Title:Marsh vegetation and sediment characteristics at three sites along five transects in the Rowley River Estuary Marsh during 1998
Investigator 1: 
First Name:Charles
Last Name:Hopkinson
Address line 1:Ecosystems Center
Address line 2:MBL
Address line 3:7 MBL St
City:Woods Hole
State:MA
Zip Code:02543
Country:USA
Associate Investigators:Catherine Schmitt, Nat Weston
Keywords:PIE LTER, primary production, organic matter, inorganic nutrients, marsh, vegetation, biomass, density, organic, ammonium, vegetation, bulk, porosity, sediment
Abstract:Marsh vegetation and sediment characteristics at three sites along five transects
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-TRANSECTS.dat
Data File Name MAR-RO-TRANSECTS
Beginning Date 1/1/1998
End Date 12/31/1998
Number of Data Records 15
Other Files to Reference MAR-RO-Sedimentation.xls
Availability Status Type 1
Quality Control Information
Maintenance Description
Log of Changes: Version 01, initial Excel metadata template
Version 02, 21Jan2010 keyword update
 
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 Site 13 Site 14 Site 15  
Geographic Description MAR-RO-1.1 MAR-RO-1.2 MAR-RO-1.3 MAR-RO-2.1 MAR-RO-2.2 MAR-RO-2.3 MAR-RO-3.1 MAR-RO-3.2 MAR-RO-3.3 MAR-RO-4.1 MAR-RO-4.2 MAR-RO-4.3 MAR-RO-5.1 MAR-RO-5.2 MAR-RO-5.3  
Location Bounding Box                                
West Bounding Coordinate                                
East Bounding Coordinate                                
North Bounding Coordinate                                
South Bounding Coordinate                                
OR if single point location                                
Latitude 42.73124641 42.73044391 42.73010427 42.72927524 42.72937808 42.72944309 42.7315672 42.73114989 42.73073701 42.72164579 42.72102267 42.72012316 42.72735083 42.72786435 42.72826021  
Longitude -70.82633015 -70.82674205 -70.82689935 -70.83476712 -70.83554343 -70.83600791 -70.84149728 -70.84213437 -70.84278369 -70.84739211 -70.84752722 -70.84773538 -70.85227181 -70.85242278 -70.8525282  
Elevation                                
                                 
                                 
 
TAXONOMIC COVERAGE:
Taxonomic Protocols
Organisms studied
 
Methods:Relative elevation of the sites were determined by near-simultaneous water depth measurement at slack high tide. Vegetation biomass and density were measured at each station by clipping all vegetation within duplicate quadrats (0.25 m2 for alterniflora, 0.1 m2 for patens), and counting and weighing the stems. Maximum vegetation height was measured in the field. Marsh sediment cores were obtained for sediment characteristics. Sediment NH4 was determined by a KCl extraction (see ANALYTICAL METHODS). Sediment bulk density was determined by dry weight of a known volume of sediment. Sediment organic matter was measured by weight loss on combustion of sediment to 500 ░C.

Data Table

Variable Name Variable Description Units Measurement Scale Code Information Number Type DateTime Format Missing Value Code Missing Value Code Explanation
STATION sampling station (transect.site)   nominal         blank cell
STATE X x coordinates (meters) in MA state plane NAD 83 meter interval   real     blank cell
STATE Y y coordinates (meters) in MA state plane NAD 83 meter interval   real     blank cell
LAT Latitude in NAD 83 geographic coordinates (decimal degrees) degree interval   real     blank cell
LON Longitude in NAD 83 geographic coordinates (decimal degrees) degree interval   real     blank cell
DIST distance from tidal creek along transect (m) meter interval   real     blank cell
ELEV relative elevation of marsh surface (cm) centimeter ratio   real     blank cell
VEG dominant vegetation type   nominal alterniflora = Spartina alterniflora | short alterniflora = Spartina alterniflora short-form | patens = Spartina patens       blank cell
DEN vegetation density (m-2) squareMeter ratio   real     blank cell
DEN SE standard error of the density measurements squareMeter ratio   real     blank cell
BIO vegetation biomass (g m-2) gramsPerSquareMeter ratio   real     blank cell
BIO SE standard error of the biomass measurements gramsPerSquareMeter ratio   real     blank cell
HT maximum height of vegetation (cm) centimeter ratio   real     blank cell
HT SE standard error of height measurements centimeter ratio   real     blank cell
NH4 sediment porewater + exchangeable ammonium to 50 cm (Ámols N cm-3) microMolesPerCubicCentimeter ratio   real     blank cell
POR sediment porosity to 50 cm (g cm-3) gramsPerCubicCentimeter ratio   real     blank cell
BD sediment bulk density (g dry weight cm-3) gramsPerCubicCentimeter ratio   real     blank cell
% OM percent organic content of the sediment to 50 cm percent ratio   real     blank cell