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:WAT-YSI-Swamp-2010.01
Dataset Title:Year 2010, 15 minute measurements of stage, water temperature in a small headwater stream draining draining a mainly wetland catchment (49% wetlands/swamp + 36% forest), Bear Br., draining Cedar Swamp, Reading, MA.
Investigator 1: 
First Name:Wilfred
Last Name:Wollheim
Address line 1:Morse Hall
Address line 2:UNH
Address line 3:
City:Durham
State:NH
Zip Code:03824
Country:USA
Associate Investigators:Nat Morse, Amanda Hope
Keywords:PIE LTER, disturbance, Cedar Swamp, Bear Br, wetland, discharge, water temperature, water stage
Abstract:Continuous measurements, every 15 minutes, were made of stage and water temperature in a small headwater stream draining a mainly wetland catchment (49% wetland + 36% wetland). Discharge is determined from stage using discharge vs stage regressions.
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/WAT/data/WAT-YSI-Swamp-2010.csv
Data File Name WAT-YSI-Swamp-2010
Beginning Date 1/1/2010
End Date 12/31/2010
Number of Data Records 35003
Other Files to Reference All in the YSI series.
Availability Status Type 1
Quality Control Information
Maintenance Description Periodic with improvement of rating curve, particularly as more high discharge events are incorporated.
Log of Changes: Version 01, 27Jun2012, data and metadata updated. Used MarcrosExportEML_HTML (working)pie_excel2007.xlsm 3/23/2012 12:08 PM for QA/QC to EML 2.1.0.
 
RESEARCH LOCATION: WAT-IP-Reading-YSI-CS Site 2
Geographic Description Watershed water collection site for Cedar Swamp (wetland landuse), Reading, MA  
Location Bounding Box    
West Bounding Coordinate    
East Bounding Coordinate    
North Bounding Coordinate    
South Bounding Coordinate    
OR if single point location    
Latitude 42.5495  
Longitude -71.0909  
Elevation    
     
     
 
TAXONOMIC COVERAGE:
Taxonomic Protocols
Organisms studied
 
Methods:
HOBO data loggers were used exclusively this year to monitor stage height and water temperature



HOBO: Depth and water temperature are recorded by the HOBO data logger. Depths are corrected for barometric pressure changes using readings in an additional HOBO datalogger deployed at Marshview Farm. The HOBO is deployed in a a PVC tube, which was attached to ree-bar driven into the stream bed. The PVC tube has holes drilled to allow adequate water circulation.


NOTES AND COMMENTS:

Beaver activity downstream of the datalogger severely restricted flow. The dam appears to have breached on October 21, 2010 between 13:30 and 13:45. Stream flow was negligible throughout most of the year, and no accurate rating curve was developed to estimated discharge for the period when the beaver dam was affecting flow. We do not expect to update discharge estimates for the period between the beginning of the year and when the dam blew out. After we develop an accurate rating curve from the time period after the dam washed out, we plan to update the discharge estimates.


Flags:

1-- Beaver dam in place altering flow. No future discharge updates are anticipated.
2 -- New rating curve is needed before discharge estimates can be calculated. Data will be updated at the earliest possible date.

Data Table

Variable Name Variable Description Units Measurement Scale Code Information Number Type DateTime Format Missing Value Code Missing Value Code Explanation
Date date (yyyy-mm-dd)   datetime     yyyy-mm-dd NA NA = not available
Time time (hh:mm) 24 hour   datetime     hh:mm NA NA = not available
Temp water temperature (oC) celsius interval   real   NA NA = not available
HOBO_Depth stage height standardized to HOBO depth (m) meter ratio   real   NA NA = not available
Depth_Device depth measurement device used to determine discharge   nominal YSI = YSI depth sonde | SIGMA = Sigma autosampler depth sonde | TEMP_HOBO = HOBO depth sonde deployed in temporary stilling well | HOBO = HOBO depth sonde deployed in permanent stilling well     NA NA = not available
Discharge discharge literPerSecond ratio   real   NA NA = not available
Flag Code referring to comment about the data (explanation in methods)   nominal 1 = Beaver dam in place altering flow. No future discharge updates are anticipated | 2 = New rating curve is needed before discharge estimates can be calculated. Data will be updated at the earliest possible date