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:
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 Title:||Annual productivity in control plots at a Spartina patens-dominated salt marsh at Law's Point, Rowley River, Plum Island Ecosystem, MA.|
|Investigator 1:|| |
|Address line 1:||Dept of Biological Sciences|
|Address line 2:|
|Address line 3:||University of SC|
|Investigator 2:|| |
|Address line 1:||Baruch Marine Field Laboratory|
|Address line 3:||PO Box 1630|
|Associate Investigators:||Rob Daoust|
|Keywords:||LTER, PIE, Plum Island Ecosystems, Massachusetts, Rowley River, primary production, estuary, salt marsh, Spartina patens, primary productivity, Northeast United States|
|Abstract:||Annual productivity is determined from aboveground biomass data collected destructively from control plots during the growing season at a Spartina patens-dominated salt marsh on the Rowley River within the Plum Island Ecosystem (PIE) LTER site, MA.|
|Contact:||Plum Island Ecosystems LTER Information Manager
The Ecosystems Center
Marine Biological Lab
7 MBL St
Woods Hole, MA 02543
Phone (508) 289 7485
Online URL: http://ecosystems.mbl.edu/PIE/
|DATA FILE INFORMATION:|
|Data File URL||http://ecosystems.mbl.edu/PIE/data/MAR/data/LTE-MP-LPC-productivitymeans.csv|
|Data File Name||LTE-MP-LPC-productivitymeans|
|Number of Data Records||13|
|Other Files to Reference||LTE-MP-LAC-productivitymeans; LTE-MP-NAC-productivitymeans|
|Availability Status||type 1|
|Quality Control Information|
|Maintenance Description||Collections occur approximately every month from May through October. Database is updated once annually, usually in the winter. Study and data collection are ongoing as of Jan 2013.|
|Log of Changes:||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|
|RESEARCH LOCATION:||LTE-MP-LPP||Site 2|
|Geographic Description||Law's Point on Rowley River, Rowley, MA, site of PIE LTER Spartina patens plot level fertilization experiment|
|Location Bounding Box|
|West Bounding Coordinate|
|East Bounding Coordinate|
|North Bounding Coordinate|
|South Bounding Coordinate|
|OR if single point location|
|Organisms studied||Spartina patens|
This data set is part of an on-going LTER project at the Plum Island Ecosystem (PIE) site. The sampling location is in a Spartina patens-dominated marsh at Law's Point between the Rowley River and West Creek in Rowley MA.
The biomass-estimation method is destructive. Three control plots were permanently established in the marsh. For sampling, a 10x10 cm quadrat is placed randomly in each plot, and all plants are clipped within 1 cm of the sediment surface and placed into a labelled plastic bag for transport to the lab. Live and dead plants are separated, and live plants are separated by species. Plants are placed into labelled paper bags, dried at 60C and weighed. Sampling occurs approximately monthly from May to Oct.
Permanent census plots were established in August 2000. The first complete year of data collection available for annual productiviy is 2001. In May 2006 the plots were moved due to potential contamination from fertilized plots.
All data are entered into an Excel spreadsheet. Annual productivity is determined using a variation of the Smalley method and SAS (SAS System for Windows; release 8.02; SAS Institute, Inc; Cary, NC), and is based on standing live+dead biomass at peak live biomass. Data are reported as the mean annual productivity and standard error of the 3 plots (n=3).
|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|
|annual productivity||mean annual productivity, dry weight||gramPerMeterSquaredPerYear||ratio||real||.||.=not measured|
|stderr||standard error of the mean||gramPerMeterSquaredPerYear||ratio||real||.||.=not measured|