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: CH-ALLCREEKS-DECOMP-2003.xls

CH-ALLCREEKS-DECOMP-2003.txt

DOCUMENTATION FILE: CH-ALLCREEKS-DECOMP-2003.doc

YEAR: 2003

PI: Chuck Hopkinson

OTHERS: Linda Deegan, Mike Johnson, Christian Picard, Bonnie Keeler

BRIEF DESCRIPTION OF DATA FILE: Decomposition data for Spartina alterniflora and Spartina patens at all creeks

KEYWORDS: Decomposition, Spartina alterniflora, Spartina patens, litter bags

RESEARCH LOCATION:

Creek	Branch	Transect	Habitat
ALL	R, L	Variable	TSA, SP, TSA/SP

EXPERIMENTAL DESIGN AND METHODS: Litter bags with approximately 15-20 g of dried litter were deployed in the TSA, SP and TSA/SP transition zone in one transect of each creek branch on 1-Jul-03. 15 bags containing Spartina patens were placed in the SP zone, 10 bags containing Spartina alterniflora were placed in the TSA zone and 10 bags containing Spartina alterniflora were placed in the TSA/SP mixed zone. 3 SP bags, 2 TSA bags and 2 TSA/SP bags were recovered at 2 week, 1 month, 2 month, 3 month and 4 month intervals. Recovered litter was washed, oven dried and weighed to calculate % weight loss.

NOTES AND COMMENTS:

VARIABLE DESCRIPTION:

Name	Description	Unit	Precision
Creek
Branch
Transect
Habitat
Substrate	Type of litter in litter bag	NA	NA
Date of Deployment	Date litter bags were deployed in the field	dd-mmm-yyyy	1
Date of Recovery	Date litter bags were recovered from the field	dd-mmm-yyyy	1
Days Elapsed	Amount of days litter bag was in the field	Days	1
% Weight Loss	% weight loss due to decomposition	Percent	0.01
% Mass Remaining	% mass of litter remaining in litter bag at each time interval	Percent	0.01
Comments	Comments about specific data

CALCULATIONS: % Weight Loss = [(Initial Weight–Final Weight)/Initial Weight] * 100

% Mass Remaining = 100-% Weight Loss

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: 2-Mar-06

Data entered by: Christian Picard

Comments: