Acceptance and utilization of PIE-LTER data requires that:
· The Principal Investigator be sent a notice stating reasons for acquiring any data and a description of the publication intentions.
· 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.
· A copy of any resultant publications should be sent to:
(Principal Investigator)
Ecosystems Center;
Marine Biological Laboratory
Woods Hole, MA 02543
PLUM ISLAND ECOSYSTEM LTER DATABASE
DATA FILE: EST-PR-NUT.xls ; EST-PR-NUT.txt
DOCUMENTATION FILE: EST-PR-NUT.doc
YEAR: 1994-2003
PI: Charles Hopkinson
OTHERS: Hap Garritt, Ishi Buffam, Justin LeBlanc, Nat Weston, Greg Peterson, Josh Goldstein, Corey Lawrence
BRIEF DESCRIPTION OF DATA FILE: Water-column nutrient and particulate transects along the Parker River Estuary.
KEYWORDS: water, column, ammonium, nitrate, phosphate, dissolved, organic, carbon, nutrients, temperature, secchi, total, nitrogen, phosphorus, suspended, solid, particulate, isotope, light, extinction, chlorophyll, phaeopigment, conductivity, salinity
SITE TYPE: Estuary
RESEARCH LOCATION:
STATION LAT LON
WAT-PR-Parker Dam 42.67770213 70.83784394
EST-PR-0 42.75085508 70.92796269
EST-PR-4 42.75174265 70.91691665
EST-PR-6 42.74829383 70.91495895
EST-PR-8 42.75219747 70.91020899
EST-PR-12 42.75697423 70.90897971
EST-PR-15 Middle Rd 42.75890398 70.90094097
EST-PR-16 42.75708039 70.89690988
EST-PR-17 Rt1 42.75965806 70.89170367
EST-PR-18 42.76247293 70.88417006
EST-PR-20 Mill 42.75472052 70.87582063
EST-PR-21 RR 42.75552712 70.86666078
EST-PR-22 42.76258164 70.85821174
EST-PR-23 Rt1A 42.76241138 70.84765737
EST-PR-24 42.76177168 70.83675555
EST-PR-25 42.75701283 70.82331615
EST-SO-Nelson 42.74716149 70.82008701
EST-SO-Buoy 42.7274965 70.80569481
EST-SO-IBYC 42.70978014 70.79483658
EST-SO-Spindle 42.697826 70.78356249
EST-SO-Offshore 42.70544185 70.74185558
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. 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.
VARIABLE DESCRIPTION:
DATE = date of sampling (dd-mmm-yyyy)
TIME
= time of sampling (hh:mm - 24hr)
STATION = name of station sampled
STATE X = x coordinates (meters) in MA state plane NAD 83
STATE Y = y coordinates (meters) in MA state plane NAD 83
LAT = Latitude in NAD 83 geographic coordinates (decimal degrees)
LON
= Longitude in NAD 83 geographic coordinates (decimal degrees)
DIST = distance downstream from the Parker Dam (km), where appropriate
TIDE
= tide stage, "high" within 2 hrs of high tide, "low"
within 2 hrs of low tide
SAL = salinity (ppt)
COND = conductivity (mS/cm)
TEMP = temperature (oC)
SECCHI = secchi depth (cm)
NH4 = NH4+ (ammonium) concentration (umol/L)
NO3 = NO3- + NO2- (nitrate+nitrite) concentration (umol/L)
PO4 = PO4--- (soluble reactive phosphate) concentration (umol/L)
TDN = total dissolved nitrogen conc. (umol/L)
DON = dissolved organic nitrogen conc. (umol/L)
TDP = total dissolved phosphorus (umol/L)
DOP = dissolved organic phosphorus (umol/L)
PP =
particulate phosphorous (µmol/L)
DOC = dissolved organic carbon conc. (umol/L)
DO13C = delta 13-C Carbon of dissolved organic carbon (per mil)
SS = suspended sediment concentration (mg/L)
POC
= particulate organic carbon conc. (umol/L)
PON = particulate organic nitrogen conc. (umol/L)
PO13C = delta 13-Carbon of particulate organic matter (per mil)
PO15N = delta 15-Nitrogen of particulate organic matter (per mil)
DIC = dissolved inorganic carbon (umol/L)
DI13C
= delta 13-C Carbon of dissolved inorganic carbon (per mil)
CHLA = chlorophyll a concentration (ug/L)
PHAEO = phaeopigment concentration (ug/L)
LTEXT = light extinction coefficient (1/m)
15NH4 = del (per mil) of 15N ammonium
15NO3 = del (per mil) of 15N nitrate
15TDN = del (per mil) of 15N total dissolved nitrogen
15DON = del (per mil) of 15N dissolved organic nitrogen
CALCULATIONS:
FOR MORE INFORMATION, CONTACT:
Ecosystems Center, MBL
Woods Hole, MA 02543
OTHER DATA FILES TO REFERENCE:
REFERENCE CITATIONS:
DATA AVAILABILITY STATUS:
Type 2
ARCHIVE INFORMATION:
Date of original entry: July 17, 2000
Data entered by: Nat Weston
Updated: January 21, 2004
Updated by: Hap Garritt
Comments: