Acceptance and utilization of PIE-LTER data requires that:
· The Principal Investigator be sent a notice stating reasons for acquiring any data and a description of the publication intentions.
· 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:
(Principal Investigator)
Ecosystems Center;
Marine Biological Laboratory
Woods Hole, MA 02543
PLUM ISLAND ECOSYSTEM LTER DATABASE
DATA FILE: Data file is available as both an Excel spreadsheet (version 2000) and a text (tab-delimited) file.
LTE-MP-SETraw.xls, LTE-MP-SETraw.txt
DOCUMENTATION FILE: LTE-MP-SETraw.doc
YEAR: 1999-2004
PI: James T. Morris
OTHERS: Robert J. Daoust, Karen Sundberg
BRIEF DESCRIPTION OF DATA FILE: Raw data from sediment-elevation table pin measurements at the three plot-level marsh fertilization experimental research sites in the low marsh (Spartina alterniflora dominated) and high marsh (Spartina patens dominated) at Law’s Point and on the upper Parker River (Typha sp. dominated marsh).
KEYWORDS: sediment elevation table, SET, Spartina, alterniflora, patens, macrophyte, LTE-MP-LPP, LTE-MP-LPA, LTE-MP-ORT
SITE TYPE: marsh, long-term experiments
RESEARCH LOCATION:
LTE-MP-LPA = Law’s Point low marsh (Spartina alterniflora dominated) plot-level marsh fertilization experimental site
LTE-MP-LPP = Law’s Point high marsh (Spartina patens dominated) plot-level marsh fertilization experimental site
LTE-MP-ORT = Upper Parker River Typha sp. dominated marsh plot-level marsh fertilization experimental site
|
STATION |
LAT |
LON |
|
LTE-MP-LPA |
42.73174171 |
70.84247191 |
|
LTE-MP-LPP |
42.75673837 |
70.91771675 |
|
LTE-MP-ORT |
42.73095384 |
70.84291486 |
EXPERIMENTAL DESIGN AND METHODS: (Note – These methods describe the entire research project at the long-term plot-level marsh fertilization experimental sites.)
There are three ongoing plot level fertilization sites. The
first is in the low marsh at Law’s Point along the Rowley River, a monospecific
community dominated by Spartina alterniflora. The second is in the high
marsh at Law’s Point, a nearly monospecific stand of Spartina patens
intermixed with small quantities of S. alterniflora. The third site is
in a Typha sp. dominated brackish water marsh on an
upstream tributary of the Parker River along Orchard Rd. in Newbury, MA. These experiments are replicates of each
other with each site receiving annual additions of 30 M of nitrogen (as NH4NH3)
and 15 M of phosphorus (as P2O5). This is evenly delivered in 6 monthly
increments throughout the growing season from May through October. There are 4 treatments per experiment: control
(no fertilizer added); nitrogen only (NH4NH3 added only),
phosphorus only (P2O5 added only); and,
nitrogen+phosphorus (both NH4NH3 and P2O5
added).
Above-ground
macrophyte biomass is monitored monthly at each experimental site. This is
accomplished non-destructively at the low marsh and brackish marsh sites using
methods described in Morris and Haskin (1990) for the low marsh, and methods
similar to Daoust and Childers (1998) for the brackish marsh. Biomass is monitored destructively using
traditional harvest methods in the high marsh experiment.
Porewater is
sampled monthly from May through November and bi-monthly from December though
April using diffusion samplers. Samples
are retrieved from triplicate poles at depths of 10, 25, 50, 75, and 100
cm. Soluble reactive phosphorus, NH4,
S2, and chloride concentrations are measured in each sample
according to standard laboratory protocols (SRP and NH4 – Strickland
and Parson (1972); S2 – Otte and Morris (1994)).
Changes in sediment elevation are monitored monthly (low and high marsh site) and bimonthly (brackish marsh site) throughout the growing season using a Sediment-Erosion Table.
NOTES AND COMMENTS:
“.”=missing value
VARIABLE DESCRIPTION:
The following abbreviations are used in the table below:
N = Nitrogen
P = Phosphorous
|
DATA FILE NAME |
VARIABLE |
VARIABLE DESCRIPTION |
UNITS |
|
|
Site |
Site Abbreviation (refer to “Research Location” above) |
|
|
Plot |
Experimental plot number |
general number |
|
|
Trt |
C – control, unfertilized NP – N+P fertilized |
general letter code |
|
|
Position |
L – left position C – center position R – right position |
general letter code |
|
|
Pin |
SET Pin Number (1-9) |
general number |
|
|
Pin height |
Actual measurement of relative elevation |
cm |
|
|
Elev change |
Total change in elevation |
cm |
CALCULATIONS:
Elev change is calculated by subtracting the elevation at time 0 from the present month’s elevation.
FOR MORE INFORMATION, CONTACT:
Robert J. Daoust
Department of Biological Sciences
University of South Carolina
Columbia, SC 29208
Phone #: (803) 777-9051
Karen Sundberg
Baruch Marine Field Laboratory
University of South Carolina
Georgetown, SC 29440
Phone #: (843) 546-3623
OTHER DATA FILES TO REFERENCE:
LTE-MP-SETmeans.xls, LTE-MP-SETmeans.txt, LTE-MP-SETmeans.doc
REFERENCE CITATIONS:
Daoust, Robert J. and Daniel L. Childers. 1998. Quantifying aboveground biomass and estimating net aboveground primary production for wetland macrophytes using a non-destructive phenometric technique. Aquatic Botany 62:115-133.
Morris, James T. and Betty Haskin. 1990. A 5-yr record of aerial primary production and stand characteristics of Spartina alterniflora. Ecology 71:2209-2217.
Otte, M. L. and J. T. Morris (1994). Dimethylsulphoniopropionate (DMSP) in Spartina alterniflora Loisel. Aquatic Botany 48:239-259.
Strickland, T. D. and T. R. Parsons. 1972. A Practical Handbook of Seawater Analysis. Fisheries Research Board of Canada, Ottawa, Ontario, Canada.
DATA AVAILABILITY STATUS:
Type 3
ARCHIVE INFORMATION:
Date of entry: July 24, 2001
Data entered by: Robert J. Daoust, Karen Sundberg
Comments: