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:STP-PR-Mesocosm.01
Dataset Title:Mesocosm experiment in which the effects of dissolved organic matter and nutrient additions on estuarine food webs were investigated.
Investigator 1: 
First Name:Chuck
Last Name:Hopkinson
Address line 1:Georgia Seagrant College Program
Address line 2:University of Georgia
Address line 3:229 Marine Sciences
City:Athens
State:GA
Zip Code:30602
Country:USA
Investigator 2: 
First Name:Joe
Last Name:Vallino
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 3: 
First Name:Linda
Last Name:Deegan
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 4: 
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
Associate Investigators:John Hobbie, Ishi Buffam, Robert Garritt, Jane Tucker, Meredith Hullar, Mark Benfield, and Ee Lin-Lim
Keywords:PIE, LTER, primary production, organic matter, nutrients, disturbance, population dynamics, mesocosm, trophic, food web, light, ammonium, nitrate, phosphate, organic, carbon, nitrogen, respiration, production, community, fish, isotope, bacteria, chlorophyll, microbe
Abstract:Mesocosm experiment in which the effects of dissolved organic matter and nutrient additions on estuarine food webs were investigated.
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/STP/data/STP-PR-Mesocosm.csv
Data File Name STP-PR-Mesocosm
Beginning Date 9/7/1994
End Date 9/29/1994
Number of Data Records 8181
Other Files to Reference
Availability Status Type 2
Quality Control Information
Maintenance Description Experiment finished
Log of Changes: Version 01: February 9, 2012, updated data and metadata. Used MarcrosExportEML_HTML (working)pie_excel2007.xlsm 2/9/12 1:33 PM for QA/QC to EML 2.1.0
 
RESEARCH LOCATION: MON-PIE-Site Site 2
Geographic Description PIE LTER research site including watersheds and estuary, Essex County, MA  
Location Bounding Box    
West Bounding Coordinate -71.22  
East Bounding Coordinate -70.75  
North Bounding Coordinate 42.83  
South Bounding Coordinate 42.5  
OR if single point location    
Latitude    
Longitude    
Elevation    
     
     
 
TAXONOMIC COVERAGE:
Taxonomic Protocols
Organisms studied
 
Methods:In the Woods Hole Harbor, MA, four large transparent bags (7m3) were submerged and filled with sea-water. Twelve larval Atlantic silversides (Menidia menidia) were added to each bag. Large fish and other predators were excluded from the mesocosms.
The treatments consisted of a control, an organic matter addition, a daily nutrient addition, and organic matter plus nutrient addition. Organic matter additions were 35 mM dissolved organic carbon (GF/F filtered), from leached leaf litter, and was added once at the outset of the experiment. 5 mM NO3-, 0.5 mM PO43-, and 7 uM SiO3 were added daily (at 17:00) in the nutrient addition bags. All mesocosms also received NaH13CO3 to raise d13C of DIC pool to 120 ‰.

Data Table

Variable Name Variable Description Units Measurement Scale Code Information Number Type DateTime Format Missing Value Code Missing Value Code Explanation
DAY Decimal day from the beginning of the experiment number interval   real     blank cell
TREATMENT treatment (CONTROL = control; DOM = dissolved organic matter addition; NUTS = nutrient addition; DOM+NUTS = dissolved organic matter and nutrient addition)   nominal CONTROL = control | DOM = dissolved organic matter addition | NUTS = nutrient addition | DOM+NUTS = dissolved organic matter and nutrient addition       blank cell
CATEGORY Category of data (WATER CHEMISTRY = NH4, NO3, PO4, Chlorophyll, DOC, POC, PON; PRODUCTION = bacterial production, primary production, size fractionated production; METABOLISM = gross production, respiration, net community production; LIGHT EXTINCTION = light extinction; FISH = fish weight and isotope data, ISOTOPE = isotope data for various dissolved species, particulate size fractions and fish; ZOOPLANKTON = zooplankton species counts; DIATOM = diatom species counts; µFLAGELLATES = µflagellate counts; CILIATES = ciliate species counts, DINOFLAGELLATES = dinoflagellate species counts; BACTERIA = bacterial counts; PAR = light data   nominal         blank cell
TYPE further description of data type   nominal         blank cell
SIZE MIN Size fractionation, minimum size of sample (µm) number ratio   real     blank cell
SIZE MAX Size fractionation, maximum size of sample (µm) number ratio   real     blank cell
ORG NUMBER number of organisms per Liter of sample numberPerLiter interval   real     blank cell
NH4 ammonium (µM, NH4-N) micromolePerLiter ratio   real     blank cell
NH4 SE standard error of ammonium analysis (µM, NH4-N) micromolePerLiter ratio   real     blank cell
PO4 soluble reactive phosphorus (µM, PO4-P) micromolePerLiter ratio   real     blank cell
NO3 nitrate + nitrite (µM, NO3andNO2-N) micromolePerLiter ratio   real     blank cell
DOC dissolved organic carbon (µM as C) micromolePerLiter ratio   real     blank cell
POC particulate organic carbon (µM as C) micromolePerLiter ratio   real     blank cell
PON particulate organic nitrogen (µM as N) micromolePerLiter ratio   real     blank cell
CHLA chlorophyll a (µg L-1) microgramPerLiter ratio   real     blank cell
Prim Prod primary production (µmol C L-1 d-1) micromolePerLiterPerDay ratio   real     blank cell
Gross Prim Prod gross primary production (µmol C mesocosm-1 d-1) dimensionless ratio   real     blank cell
RESP respiration (µmol C mesocosm-1 d-1) dimensionless ratio   real     blank cell
NCP net community production (µmol C mesocosm-1 d-1) dimensionless ratio   real     blank cell
BAC PROD bacterial production (µmol C d-1) micromolePerDay ratio   real     blank cell
LTEXT light extinction coefficient (m-1) meter ratio   real     blank cell
FISH WT fish weight (g fish-1) gram ratio   real     blank cell
15N d15N of sample (per mil) partPerThousand ratio   real     blank cell
13C d13C of sample (per mil) partPerThousand ratio   real     blank cell
PAR photosynethetically active radiation (µE m-2 s-1) microEinsteinPerMeterSquaredPerSecond ratio   real     blank cell