TIDE Project Database

http://ecosystems.mbl.edu/tide

 

 

Acceptance and utilization of TIDE project data requires that:

·        The Project Principal Investigator, Linda Deegan, be sent a notice stating reasons for acquiring any data and a description of the publication intentions.

·        The Project PI and 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:

Linda Deegan
Ecosystems Center
Marine Biological Laboratory
Woods Hole, MA 02543

 

 

TIDE PROJECT DATABASE

DATA FILE:                                        BP-WE-met nut-2003.xls

                                                             BP-WE-met nut-2003.txt

DOCUMENTATION FILE:                 BP-WE-met nut-2003.doc

YEAR:  2003

PI:  Bruce Peterson

OTHERS: Linda Deegan, Mike Johnson, Bonnie Keeler

BRIEF DESCRIPTION OF DATA FILE: Metabolism (24 hour) water collection using an ISCO autosampler deployed at the confluence of West Creek during fall equinox period of equal daylight and darkness.  Samples filtered in lab and analyzed for salinity, chla and dissolved nutrients. 

 

KEYWORDS: nitrate, phosphate, ammonium, salinity, TDN, TDP, chlorophyll, metabolism

RESEARCH LOCATION:

Creek

Branch

Transect

Habitat

WE

C

n/a

Channel

 

EXPERIMENTAL DESIGN AND METHODS:  ISCO autosampler deployed at the confluence of West Creek.  Water samples collected every hour for 24 hours to include two full tidal cycles.  Collection period designed to correspond with time of year during which there are equal hours of daylight and darkness.  Data collection began at low tide (around dusk) and continued to monitor water quality and collect hourly water samples for nutrient analysis for the next 24 hours.  YSI deployment for West Creek from 9/26/03 to 9/28/03 was unsuccesful due to a software error in sonde AB.  Nutrient samples were collected but no YSI data is available.  To make up for the lost data an additional deployment was planned for 10/03/03 to 10/07/03 using sonde AB.  Data from this second deployment is available in file CH-WE-met YSI-2003.xls. 

Water samples transported back to the lab for salinity reading using refractometer and filtration for nutrient subsampling.  Filter collected for dissolved chl a.  Nutrient samples frozen until time of analysis. 

All analysis conducted at the MBL according to standard lab procedures (see methods). 

NOTES AND COMMENTS:

VARIABLE DESCRIPTION:

Name

Description

Unit

Precision

Creek

 

 

 

Branch

 

 

 

Habitat

 

 

 

Date

Date samples collected

dd-mmm-yyyy

 

Time

Time samples collected

Hh:mm

 

Salinity

Salinity reading using refractometer

ppt

 

NO3

NO3- + NO2- (nitrate+nitrite) concentration

umol/L

 

NH4

NH4+ (ammonium) concentration

umol/L

 

PO4

PO4--- (soluble reactive phosphate) concentration

umol/L

 

Chla

dissolved chlorophyll a concentration

ug/L

 

TDN

total dissolved nitrogen

umol/L

 

TDP

total dissolved phosphorus

umol/L

 

Comments

 

 

 

 

 

 

 

 

CALCULATIONS:

FOR MORE INFORMATION, CONTACT:

Mike Johnson

7 MBL St.

Woods Hole, MA 02543

OTHER DATA FILES TO REFERENCE: CH-WE-met YSI-2003

REFERENCE CITATIONS:

ARCHIVE INFORMATION:

Date of entry: 17 June 2004

Data entered by: Bonnie Keeler

Comments: