Rowley River

Annual primary productivity in control plots at a Spartina patens-dominated salt marsh at Law's Point, Rowley River, Plum Island Ecosystem LTER, MA.

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.

Core Areas: 

Data set ID: 

131

Keywords: 

Short name: 

LTE-MP-LPC-productivitymeans

Purpose: 

 

Data sources: 

LTE-MP-LPC-productivitymeans_csv
LTE-MP-LPC-productivitymeans_xls

Methods: 

General:
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. 

Sampling Description:
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  October.

Permanent census plots were established in August 2000.  The first complete year of data available for annual productiviy is 2001.  In May 2006 the plots were moved due to potential contamination from nearby fertilized plots.

Data processing:
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 for the year of interest.  Data are reported as the mean annual productivity and standard error of the 3 plots (n=3).

Elevation: LTE-MP-LPP, ~ 1.4 meters NAVD88

Maintenance: 

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 Dec 2019.
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 22, 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: 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 08: September 15, 2017, 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 09: June 14, 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
Version 10: February 27, 2019, data and metadata updates to comply with importation to DEIMS7 and LTER Data Portal. Used MarcrosExportEML_HTML (working)pie_excel2007_Jan2018.xlsm 6/21/18 3:53 PM for QA/QC to EML 2.1.0
Version 11: October 5, 2020, data and metadata updates to comply with importation to DEIMS7 and LTER Data Portal. Used MarcrosExportEML_HTML (working)pie_excel2007_Sep2020.xlsm 9/17/20 1:11 PM for QA/QC to EML 2.1.0.

 

Additional information: 

 

Pages

Subscribe to RSS - Rowley River