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:EST-PR-NUT.07
Dataset Title:Water-column nutrient and particulate transects along the Parker River Estuary.
Investigator 1: 
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:Hap Garritt, Ishi Buffam, Justin LeBlanc, Nat Weston, Greg Peterson, Josh Goldstein, Corey Lawrence, William Lee, Aaron Strong, Christina Maki, Rebecca Prosser, Colin Millar, Catherine Caruso, Samuel Kelsey
Keywords:PIE LTER, Plum Island Ecosystems, Massachusetts, Parker River, primary production, organic matter, inorganic nutrients, disturbance, water column, ammonium, nitrate, phosphate, carbon, temperature, secchi, nitrogen, phosphorus, suspended solids, particulate, isotope, light extinction, chlorophyll, phaeopigment, conductivity, salinity
Abstract:Water chemistry including nutrient concentrations for various forms of N, P, C, as well as suspended sediments and light extinction coefficients, was determined from bi-annual nutrient transects along the Plum Island Sound estuary from the Parker River Dam to the mouth of the sound. Grab samples were taken at 11 sites along a 24 km transect from the dam to the mouth of the estuary. These samples have generally been collected in Spring and Fall and are done in conjunction with metabolism transects measuring dissolved oxygen levels. The Spring and Fall transects correspond to the high-flow, pre-growth season in April and the low-flow, post-growth season in September.
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/EST/data/EST-PR-NUT.csv
Data File Name EST-PR-NUT
Beginning Date 6/16/1994
End Date 8/31/2010
Number of Data Records 508
Other Files to Reference
Availability Status Type 1
Quality Control Information
Maintenance Description on going data collection
Log of Changes: 01) updated to EML level 4-5
02) updated data through spring 2007. 9/24/2007
03) added flag data parameters
04) added additional data for 4/15/08
05) added additional flag data parameters
06) updated data through spring 2008, 4/15/08
Version 07: January 24, 2012, updated data and metadata through 2010. Used MarcrosExportEML_HTML (working)pie_excel2007.xlsm 1/18/12 4:51 PM for QA/QC to EML 2.1.0
 
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 Site 16 Site 17 Site 18 Site 19 Site 20 Site 21  
Geographic Description WAT-PR-Parker Dam EST-PR-0 EST-PR-4 EST-PR-6 EST-PR-8 EST-PR-12 EST-PR-15 Middle Rd EST-PR-16 EST-PR-17 Rt1 EST-PR-18 EST-PR-20 Mill EST-PR-21 RR EST-PR-22 EST-PR-23 Rt1A EST-PR-24 EST-PR-25 EST-SO-Nelson EST-SO-Buoy EST-SO-IBYC EST-SO-Spindle EST-SO-Offshore  
Location Bounding Box                                            
West Bounding Coordinate                                            
East Bounding Coordinate                                            
North Bounding Coordinate                                            
South Bounding Coordinate                                            
OR if single point location                                            
Latitude 42.67770213 42.75085508 42.75174265 42.74829383 42.75219747 42.75697423 42.75890398 42.75708039 42.75965806 42.76247293 42.75472052 42.75552712 42.76258164 42.76241138 42.76177168 42.75701283 42.74716149 42.7274965 42.70978014 42.697826 42.70544185  
Longitude -70.83784394 -70.92796269 -70.91691665 -70.91495895 -70.91020899 -70.90897971 -70.90094097 -70.89690988 -70.89170367 -70.88417006 -70.87582063 -70.86666078 -70.85821174 -70.84765737 -70.83675555 -70.82331615 -70.82008701 -70.80569481 -70.79483658 -70.78356249 -70.74185558  
Elevation                                            
                                             
                                             
 
TAXONOMIC COVERAGE:
Taxonomic Protocols
Organisms studied
 
Methods:EXPERIMENTAL DESIGN AND METHODS: For all dates during 1994, samplings were made within 2 hours of high tide, except for samples that have a station designation of "low", which were collected within 2 hours of low tide. For all other dates, samples were collected Salinity was measured using a refractometer or calculated from conductivity. Conductivity was measured using a Hydrolab H2O probe with a Scout 2 Water Quality Data System. Temperature was measured using the Hydrolab H2O probe or a field thermometer. Conductivity and temperature have also been measured using a YSI Sonde probe since 2004. A secchi disk was used to obtain the secchi depth, which was considered to be the shallowest depth at which black and white sections of the disk were indistinguishable. During 1994, approximately 10 liters of water were collected in an HDPE carboy. 1 liter polycarbonate bottles were used for later water collections. In the lab, the water was filtered through a GFF filter within 3 hours of collection, and preserved immediately for later analysis of dissolved materials, and filters preserved for later analysis of particulate materials. For details on analytical procedures, see Analytical Methods.

NOTES AND COMMENTS: Samples for NH4 analysis were filtered and preserved in the field, immediately upon collection, for all transects from 3/94 to 8/94. For the July 11, 2000 transect, water samples for nutrient analysis were collected at specific salinities, rather than at the designated stations. For the September 11, 2001 transect, water samples for nutrient analysis were collected at specific salinities corresponding to the water masses in which the metabolism measurements were made during the dusk transect on September 10, 2001. Sampling at specific salinities has been done consistently since the April 2006 transect. Contact Chuck Hopkinson (chopkins@uga.edu) for more details on sampling.

Starting in 2008, we recorded the actual location at which the nutrients were sampled (because they are sampled in salinity space, this location will vary depending on the salinity gradient and depending on the tide at which the samples were taken for each transect. Sites are measured using GPS and state coordinates no longer included in database.

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 sampling (dd-mmm-yyyy)   datetime     dd-mmm-yyyy   blank cell
TIME time of sampling (hh:mm - 24hr)   datetime     hh:mm   blank cell
Flag_TIME data quality flag for TIME   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
STATION ID identity of station sampled   nominal         blank cell
STATION NAME KM name of station sampled in kilometer space   nominal         blank cell
Flag_STATION NAME KM data quality flag for STATION NAME KM   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
STATE X x coordinates (meters) in MA state plane NAD 83 meter interval   real     blank cell
Flag_STATE X data quality flag for STATE X   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
STATE Y y coordinates (meters) in MA state plane NAD 83 meter interval   real     blank cell
Flag_STATE Y data quality flag for STATE Y   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
LAT Latitude in NAD 83 geographic coordinates (decimal degrees) degree interval   real     blank cell
Flag_LAT data quality flag for LAT   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
LON Longitude in NAD 83 geographic coordinates (decimal degrees) degree interval   real     blank cell
Flag_LON data quality flag for LON   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
DIST distance upstream from mouth of estuary (km), where appropriate kilometer interval   real     blank cell
Flag_DIST data quality flag for DIST   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
TIDE tide stage, "high" within 2 hrs of high tide, "low" within 2 hrs of low tide   nominal         blank cell
Flag_TIDE data quality flag for TIDE   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
SAL salinity (ppt) partPerThousand interval   real     blank cell
Flag_SAL data quality flag for SAL   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
COND specific conductivity (mS/cm) millisiemenPerCentimeter ratio   real     blank cell
Flag_COND data quality flag for COND   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
TEMP temperature (oC) celsius interval   real     blank cell
Flag_TEMP data quality flag for TEMP   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
SECCHI secchi depth (cm) centimeter ratio   real     blank cell
Flag_SECCHI data quality flag for SECCHI   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
NH4 NH4+ (ammonium) concentration (umol N/L) micromolePerLiter ratio   real     blank cell
Flag_NH4 data quality flag for NH4   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
NO3 NO3- + NO2- (nitrate+nitrite) concentration (umol N/L) micromolePerLiter ratio   real     blank cell
Flag_NO3 data quality flag for NO3   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
PO4 PO4--- (soluble reactive phosphate) concentration (umol P/L) micromolePerLiter ratio   real     blank cell
Flag_PO4 data quality flag for PO4   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
TDN total dissolved nitrogen conc. (umol N/L) micromolePerLiter ratio   real     blank cell
Flag_TDN data quality flag for TDN   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
DON dissolved organic nitrogen conc. (umol N/L) micromolePerLiter ratio   real     blank cell
Flag_DON data quality flag for DON   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
TDP total dissolved phosphorus (umol P/L) micromolePerLiter ratio   real     blank cell
Flag_TDP data quality flag for TDP   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
DOP dissolved organic phosphorus (umol P/L) micromolePerLiter ratio   real     blank cell
Flag_DOP data quality flag for DOP   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
PP particulate phosphorous (Ámol P/L) micromolePerLiter ratio   real     blank cell
Flag_PP data quality flag for PP   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
PP Std err particulate phosphorous standard error (Ámol P/L) micromolePerLiter ratio   real     blank cell
Flag_PP Std err data quality flag for PP Std err   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
DOC dissolved organic carbon conc. (umol C/L) micromolePerLiter ratio   real     blank cell
Flag_DOC data quality flag for DOC   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
DO13C delta 13C, isotope ratio 13C/12C of dissolved organic carbon partPerThousand ratio   real     blank cell
Flag_DO13C data quality flag for DO13C   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
SS suspended sediment (mg/L) milligramPerLiter ratio   real     blank cell
Flag_SS data quality flag for SS   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
SS Std error suspended sediment standard error (mg/L) milligramPerLiter ratio   real     blank cell
Flag_SS Std err data quality flag for SS Std err   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
POC particulate organic carbon conc. (umol C/L) micromolePerLiter ratio   real     blank cell
Flag_POC data quality flag for POC   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
POC Std err particulate organic carbon conc. Standard error (umolC/L) micromolePerLiter ratio   real     blank cell
Flag_POC Std err data quality flag for POC Std err   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
PON particulate organic nitrogen conc. (umolN/L) micromolePerLiter ratio   real     blank cell
Flag_PON data quality flag for PON   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
PON Std err particulate organic nitrogen conc. Standard error (umolN/L) micromolePerLiter ratio   real     blank cell
Flag_PON Std err data quality flag for PON Std err   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
PO13C delta 13C, isotope ratio 13C/12C of particulate organic carbon partPerThousand ratio   real     blank cell
Flag_PO13C data quality flag for PO13C   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
PO15N delta 15N, isotope ratio 15N/14N of particulate organic nitrogen partPerThousand ratio   real     blank cell
Flag_PO15N data quality flag for PO15N   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
DIC dissolved inorganic carbon (umol C/L) micromolePerLiter ratio   real     blank cell
Flag_DIC data quality flag for DIC   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
DI13C delta 13C, isotope ratio 13C/12C of dissolved inorganic carbon partPerThousand ratio   real     blank cell
Flag_DI13C data quality flag for DI13C   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
CHLA chlorophyll a concentration (ug/L) microgramPerLiter ratio   real     blank cell
Flag_CHLA data quality flag for CHLA   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
CHLA Std err chlorophyll a concentration Standard error (ug/L) microgramPerLiter ratio   real     blank cell
Flag_CHLA Std err data quality flag for CHLA Std err   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
PHAEO phaeopigment concentration (ug/L) microgramPerLiter ratio   real     blank cell
Flag_PHAEO data quality flag for PHAEO   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
PHAEO Std err phaeopigment concentration Standard error (ug/L) microgramPerLiter ratio   real     blank cell
Flag_PHAEO Std err data quality flag for PHAEO Std err   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
LTEXT light extinction coefficient (m-1) meter ratio   real     blank cell
Flag_LTEXT data quality flag for LTEXT   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
15NH4 delta 15N, isotope ratio 15N/14N of ammonium partPerThousand ratio   real     blank cell
Flag_15NH4 data quality flag for 15NH4   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
15NO3 delta 15N, isotope ratio 15N/14N of nitrate partPerThousand ratio   real     blank cell
Flag_15NO3 data quality flag for 15NO3   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
15TDN delta 15N, isotope ratio 15N/14N of total dissolved nitrogen partPerThousand ratio   real     blank cell
Flag_15TDN data quality flag for 15TDN   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
15DON delta 15N, isotope ratio 15N/14N of dissolved organic nitrogen partPerThousand ratio   real      
Flag_15DON data quality flag for 15DON   nominal NA=not available | NS=not sampled | E=estimated | TBA=to be analysed       blank cell
Comments comments about data   nominal         blank cell