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:LTE-TIDE-NassariusDenBio.01
Dataset Title:Nassarius obsoletus (Ilyanassa obsoleta) density measurements for Rowley River tidal creeks associated with long term fertilization experiments, Rowley and Ipswich, MA.
Investigator 1: 
First Name:David
Last Name:Johnson
Address line 1:The Ecosystems Center
Address line 2:Marine Biological Laboratory
Address line 3:7 MBL St.
City:Woods Hole
State:MA
Zip Code:02543
Country:USA
Investigator 2: 
First Name:Linda
Last Name:Deegan
Address line 1:The Ecosystems Center
Address line 2:Marine Biological Laboratory
Address line 3:7 MBL St.
City:Woods Hole
State:MA
Zip Code:02543
Country:USA
Associate Investigators:
Keywords:PIE LTER; TIDE; population dynamics, inorganic nutrients, disturbance, salt marsh, snails, creek
Abstract:Nassarius obsoletus (Ilyanassa obsoleta) length and biomass measurements for Rowley River tidal creeks associated with long term fertilization experiments, Rowley and Ipswich, MA. The TIDE project aims to simulate eutrophication on a large scale by the addition of NO3- aiming to reach 70ÁM concentrations from May to September every year during the growing season. This fertilization of the marsh has been going on at Sweeney Creek since the 2004 growing season through 2014 and at Clubhead Creek in 2005 and from 2009 till 2014.
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://pie-lter.ecosystems.mbl.edu
DATA FILE INFORMATION:
Data File URL http://ecosystems.mbl.edu/PIE/data/LTE/data/LTE-TIDE-NassariusDenBio.csv
Data File Name LTE-TIDE-NassariusDenBio
Beginning Date 8/1/2009
End Date 9/30/2014
Number of Data Records 400
Other Files to Reference
Availability Status Type 1
Quality Control Information
Maintenance Description
Log of Changes: Version 01: January 22, 2015, data and metadata updates to comply with importation to Drupal and LTER PASTA. Used MarcrosExportEML_HTML (working)pie_excel2007.xlsm 1/15/15 4:26 PM for QA/QC to EML 2.1.0
 
RESEARCH LOCATION: MAR-LTE-RO-TC-MF-SW MAR-LTE-RO-TC-MF-WE MAR-LTE-RO-TC-MF-CL MAR-LTE-RO-TC-MF-NE  
Geographic Description "Sweeney Creek", off Rowley River, Ipswich, MA West Creek, off Rowley River, Rowley, MA. Clubhead Creek off Rowley River, Rowley, MA. Nelson Island Creek, off Rowley River, Rowley,  
Location Bounding Box          
West Bounding Coordinate -70.851 -70.852 -70.842 -70.836  
East Bounding Coordinate -70.845 -70.846 -70.836 -70.831  
North Bounding Coordinate 42.724 42.741 42.742 42.744  
South Bounding Coordinate 42.719 42.736 42.738 42.74  
OR if single point location          
Latitude          
Longitude          
Elevation          
           
           
 
TAXONOMIC COVERAGE:
Taxonomic Protocols
Organisms studied Nassarius obsoletus; Ilyanassa obsoleta
 
Methods:Methods

All samples taken in late 2009-10, 2012-2014 In the field, 10 quadrats were haphazardly tossed in the creek bottoms at low tide along 250 meters.

Creeks-
Reference creeks are West and Nelson
Nutrient Enriched creeks are Sweeney and Clubhead. Sweeney has been fertilized every summer from 2004-2014 Clubhead had been fertilized in 2005 and then from 2009-2014.

All creeks have two branches determined by direction at confluence while facing upstream (Left or Right).

Data Table

Variable Name Variable Description Units Measurement Scale Code Information Number Type DateTime Format Missing Value Code Missing Value Code Explanation
Year Year sampled   datetime     YYYY NA NA = not available
Month Month sampled   nominal       NA NA = not available
Years_Enriched Number of years of nutrient enrichment   nominal       NA NA = not available
Nutrient Nutrient level of the creek   nominal Enriched = Nutrient enriched | Reference = Reference     NA NA = not available
Creek Creek sampled   nominal Sweeney = Nutrient Enriched | Nelson = Nutrient Enriched | West = Reference | Clubhead = Reference     NA NA = not available
Branch Branch Sampled   nominal L=Left | R=Right     NA NA = not available
Habitat Habittat sampled   nominal MF = Mudflat     NA NA = not available
Quadrat Quadrat sampled   nominal       NA NA = not available
Meter Meter mark   nominal       NA NA = not available
Density Density of snails numberPerMeterSquared ratio   real   NA NA = not available
Biomass Biomass of snails gramPerMeterSquared ratio   real   NA NA = not available