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-ALL-RTN NUT-2004.xls

BP-ALL-RTN NUT-2004.txt

DOCUMENTATION FILE: BP-ALL-RTN NUT-2004.doc

YEAR: 2004

PI: Bruce Peterson

OTHERS: Linda Deegan, Mike Johnson, Christian Picard

BRIEF DESCRIPTION OF DATA FILE: Routinely collected water samples at all creeks, analyzed for temp, salinity and nutrient concentrations

KEYWORDS: nitrate, phosphate, ammonium, salinity, temperature, chlorophyll

RESEARCH LOCATION:

Creek	Branch	Transect	Habitat
NE, CL, WE, SW, Rowley River	R, L and Confluence	Only sampled at confluence and 50m up the R and L branches	Channel

EXPERIMENTAL DESIGN AND METHODS: Sites visited bimonthly at mid ebbing tide (approx. 2.5 hours after peak high tide). Samples collected from creek channel at three locations at each study creek (confluence and 50m up the right and left branches). Temperature readings collected at confluence. 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	Sampling creek
Branch	Sampling branch of creek
Habitat	Creek channel
Date	Date samples collected	dd-mmm-yyyy
Time	Time samples collected	Hh:mm
Temp	Temp reading at confluence	°C
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:

REFERENCE CITATIONS:

ARCHIVE INFORMATION:

Date of entry: 1 May 2005

Data entered by: Christian Picard

Comments: