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:BEN-PR-Flux.06
Dataset Title:Rates of benthic metabolism and nutrient cycling in the Parker and Rowley Rivers of the Plum Island Sound estuary.
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:Chuck
Last Name:Hopkinson
Address line 1:
Address line 2:University of Georgia
Address line 3:229 Marine Sciences
City:Athens
State:GA
Zip Code:30602
Country:USA
Associate Investigators:Jane Tucker, Sam Kelsey, Hap Garritt, Nat Weston, Josh Goldstein, Greg Peterson, Dave Vasiliou, Ishi Buffam, John Logan, Corey Lawrence, Emily Gaines, William Lee, Christina Maki, Aaron Strong, Rebecca Prosser, Colin Millar
Keywords:LTER, PIE, Plum Island Ecosystems, Massachusetts, Parker River, Rowley River, inorganic nutrients, disturbance, sediment, benthos, metabolism, respiration, nutrient cycling, sediment-water exchange, flux, ammonium, nitrate, phosphate, methane, nitrous oxide, dissolved inorganic carbon, oxygen
Abstract:Rates of benthic metabolism and nutrient cycling in the Parker and Rowley Rivers of the Plum Island Sound estuary. Measurements include those conducted at two sites in the Parker River in Spring (high river discharge) and Fall (low discharge) for long-term monitoring, also at other sites throughout the estuary over a variety of seasons and salinities.
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/BEN/data/BEN-PR-Flux.csv
Data File Name BEN-PR-Flux
Beginning Date 6/15/1993
End Date 8/28/2012
Number of Data Records 107
Other Files to Reference
Availability Status Type 1
Quality Control Information
Maintenance Description
Log of Changes: Version 01 contained data through 29 Sept 2003.
Version 02 updates the dataset through 12 Sept 2006.
Version 03 updated/edited latitude and longtitude locations
Version 04 21Jan2010 updated metadata and data
Version 05: October 24, 2012, updated research site metadata. Used MarcrosExportEML_HTML (working)pie_excel2007.xlsm 3/23/12 12:08 PM for QA/QC to EML 2.1.0.
Version 06: 12Sep2013, data update with metadata and data updated to comply with importation to Drupal and LTER PASTA. Used MarcrosExportEML_HTML (working)pie_excel2007_Sep2013.xlsm 9/10/13 12:02 PM for QA/QC to EML 2.1.0
 
RESEARCH LOCATION: BEN-PR-P22 BEN-PR-P22(intertidal) BEN-PR-P24.2 BEN-PR-P24.0 BEN-PR-P14 BEN-PR-P11 BEN-RO-R5.5 BEN-PR-P23.5 BEN-PR-P23.5(Intertidal) BEN-EG-E13 BEN-EG-E13.5 BEN-EG-E14  
Geographic Description Benthic flux station, Parker River upper estuarine portion near Triton High School, Newbury, MA Benthic flux station, Parker River upper estuarine portion near Triton High School, Newbury, MA, intertidal Benthic flux station, Parker River pond above Parker River Central Street Dam, Newbury, MA Benthic porewater and solid phase sediment station, Parker River upper reach below Central Street Dam, Newbury, MA Benthic flux station, Parker River downstream of Mill River confluence, Newbury, MA Benthic porewater and solid phase sediment, Parker River lower reach, Town Landing, Newbury, MA Benthic flux station, Hog Island Point off mouth of Rowley River, Rowley, MA Benthic flux station, Parker River, 0.5 km below upper reach, Newbury, MA Benthic flux station, Parker River, 0.5 km below upper reach, Newbury, MA, intertidal Benthic flux station, Egypt River off Rowley River, 13 km from Plum Island Sound mouth reference Benthic flux station, Egypt River off Rowley River, 13.5 km from Plum Island Sound mouth reference Benthic flux station, Egypt River off Rowley River, 14 km from Plum Island Sound mouth reference  
Location Bounding Box                          
West Bounding Coordinate                          
East Bounding Coordinate                          
North Bounding Coordinate                          
South Bounding Coordinate                          
OR if single point location                          
Latitude 42.749889 42.749889 42.749722 42.75085 42.754838 42.761298 42.727187 42.751378 42.751378 42.707363 42.704942 42.702635  
Longitude -70.917329 -70.917329 -70.929096 -70.92756 -70.872904 -70.838606 -70.813637 -70.924641 -70.924641 -70.862546 -70.864021 -70.866069  
Elevation                          
                           
                           
 
TAXONOMIC COVERAGE:
Taxonomic Protocols
Organisms studied
 
Methods:Benthic respiration and nutrient fluxes are measured in sediment cores incubated in the dark and at in situ temperatures in the laboratory. Incubation duration iss determined by the time required for oxygen concentrations to fall by 2 to 5 mg O2 L-1 but remain above 50% of saturation (generally 6 to 48 hrs). Dissolved inorganic nitrogen and phosphorus are measured at at least 4 time points concurrent with O2 measurements. At the beginning and end of the incubation period, samplesare taken for total CO2 (TCO2 or DIC) analyses. Dissolved organic carbon (DOC), total dissolved nitrogen (TDN), N2O, and methane (CH4) were also measured during some fluxes. See ANALYTICAL METHODS.
Benthic respiration (based on O2, CO2 or CH4) and nutrient flux across the sediment-water interfaceare calculated as the slope of the constituent concentration versus time. By convention, positive values indicate efflux (constituent released from the benthos) and negative values indicate influx (constituent taken up by the benthos). Respiration values were corrected for changes in the water overlying the cores by subtracting constituent consumption measured in BOD bottles.
Values are means of 2 to 4 cores, and standard errors (S.E.) represent the error of the mean.



NOTES AND COMMENTS:
As indicated above, the benthic flux dataset is a derived dataset. That is, the values presented may be several calculation steps away from the raw data. Potential users are advised to contact one of the principle investigators for details.

1. At Stations BEN-PR-P22 and BEN-PR-P14, some flux incubationswere run to look at the differences between fluxes during high versus low tides. These parallel fluxes began in October, 1999 for Station BEN_PR_P22 and in April 2001 for BEN_PR_P14 and were discontinued after September, 2004. Sediment cores were incubated with overlying water collected to represent high tide and low tide conditions at each site. In the data, the parallel fluxes are distinguished by the salinity value listed.
2. To look at the duration of a salinity effect on fluxes, cores from Station BEN_PR_P22 in May, 2000, were incubated twice, with the second incubation starting 5 days after the first. During the second incubation, only O2, TCO2, and NH4 fluxes were measured.
3. Data for 2010-2012 have not received final QA/QC review and are subject to being updated.
4. NA in data cell indicates data are not available.
5. TBA in data cell refers to "to be analyzed".



Site (Current Name) , Site (Previous Name)
BEN-PR-P22, BEN-PR-P2
BEN-PR-P22 (Intertidal), BEN-PR-P2 (Intertidal)
BEN-PR-P24.2, BEN-PR-P0
BEN-PR-P24 , BEN-PR-P1
BEN-PR-P14 , BEN-PR-P5
BEN-PR-P11 , BEN-PR-TL
BEN-RO-R5.5 , BEN-SO-Row
BEN-PR-P23.5 , BEN-PR-E0
BEN-PR-P23.5 (Intertidal), BEN-PR-E0 (Intertidal)
BEN-EG-E13, BEN-RO-R13
BEN-EG-E13.5, BEN-RO-R13.5
BEN-EG-E14, BEN-RO-R14

Data Table

Variable Name Variable Description Units Measurement Scale Code Information Number Type DateTime Format Missing Value Code Missing Value Code Explanation
DATE date of sample collection   datetime     dd-mon-yyyy NA NA = not available
STATION-CURRENT current name of sampling station, following naming protocol   nominal       NA NA = not available
STATION-PREVIOUS name of sampling station prior to establishment of naming protocol   nominal       NA NA = not available
River Km kilometer distance, mid-channel, upstream from mouth of Plum Island Sound (RK= 0) kilometer interval   real   NA NA = not available
STATE X x coordinates (meters) in MA state plane NAD 83 meter interval   real   NA NA = not available
STATE Y y coordinates (meters) in MA state plane NAD 83 meter interval   real   NA NA = not available
LAT Latitude in NAD 83 geographic coordinates (decimal degrees) degree interval   real   NA NA = not available
LON Longitude in NAD 83 geographic coordinates (decimal degrees) degree interval   real   NA NA = not available
SAL salinity (ppt) partPerThousand interval   real   NA NA = not available
TEMP-F temperature field (Celsius) celsius interval   real   NA NA = not available
TEMP-I temperature incubation (Celsius) celsius interval   real   NA NA = not available
O2-FLUX-E oxygen flux (mmole O2 m-2 d-1) as measured by oxygen electrode millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
O2-FLUX-E-SE Standard error of the mean of O2 flux measurements by electrode millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
O2-FLUX-W oxygen flux (mmole O2 m-2 d-1) as measured by Winkler titration millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
O2-FLUX-W-SE Standard error of the mean of O2 flux measurements by titration millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
DIC-FLUX dissolved inorganic carbon, or total CO2 flux (mmole C m-2 d-1) millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
DIC-FLUX-SE Standard error of the mean of DIC flux measurements millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
NH4-FLUX ammonium flux (mmole N m-2 d-1) millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
NH4-FLUX-SE Standard error of the mean of NH4 flux measurements millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
NO3-FLUX nitrate + nitrite flux (mmole N m-2 d-1) millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
NO3-FLUX-SE Standard error of the mean of NO3 + NO2 flux measurements millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
DIN-FLUX dissolved inorganic nitrogen (NH4+ + NO3- + NO2-) flux (mmole N m-2 d-1) millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
DIN-FLUX-SE Standard error of the mean of DIN flux measurements millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
PO4-FLUX dissolved phosphate flux (mmole P m-2 d-1) millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
PO4-FLUX-SE Standard error of the mean of PO4 flux measurements millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
DOC-FLUX dissolved organic carbon flux (mmole C m-2 d-1) millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
DOC-FLUX-SE Standard error of the mean of DOC flux measurements millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
DON-FLUX dissolved organic nitrogen (TDN - DIN) flux (mmole N m-2 d-1) millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
CH4-FLUX methane flux (mmole C m-2 d-1) millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
N2O-FLUX nitrous oxide flux (mmole N m-2 d-1) millimolePerMeterSquaredPerDay ratio   real   NA NA = not available
COMMENTS information pertaining to individual data points   nominal       NA NA = not available