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-2005.xls

BP-WE-MET NUT-2005.txt

DOCUMENTATION FILE: BP-WE-MET NUT-2005.doc

YEAR: 2005

PI: Bruce Peterson

OTHERS: Linda Deegan, Mike Johnson, Christian Picard

BRIEF DESCRIPTION OF DATA FILE: Metabolism (24 hour) water collection using ISCO autosamplers deployed at T1 of both branches at West Creek during fall equinox period of equal daylight and darkness in conjunction with YSI sonde and ADCP deployment. 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	R, L	T1	Channel

EXPERIMENTAL DESIGN AND METHODS: ISCO autosampler deployed at T1 of both branches 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 dawn) and continued to monitor water quality and collect hourly water samples for nutrient analysis for the next 24 hours. ADCP (acoustic dopler current profiler) was deployed alongside the YSI probe to monitor current velocity and depth. Water samples transported back to the lab for salinity reading using refractometer and filtration for nutrient subsampling. Filter collected for dissolved chl a, TSS and PPO4. 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
TSS	Total suspended solids	ug/L
PPO4	Particulate phosphate	ug/L
TDN	total dissolved nitrogen	umol/L
TDP	total dissolved phosphorus	umol/L
DOC	Dissolved organic carbon	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-2005

REFERENCE CITATIONS:

ARCHIVE INFORMATION:

Date of entry: 10 February 2006

Data entered by: Christian Picard

Comments: