DATA FILE: LTE-MD-EOYBIOMASS.xls
DOCUMENTATION FILE: LTE-MD-EOYBIOMASS.doc
YEAR: 2000-2001
PI: Robert Buchsbaum
OTHERS:
BRIEF DESCRIPTION OF DATA FILE: End of growing season percent cover and biomass data for hayed v reference sites.
KEYWORDS: haying, salt marsh, vegetation, biomass
SITE TYPE: Long-term experiment
RESEARCH LOCATION: Salt marsh that is hayed by Dan McHugh in Rowley and
reference areas in the vicinity of Stackyard and Patmos Roads. Four studies sites (two hayed and two
references) are contained with approximate boundaries as ff: Lat.
42.740N-42.747N; Long. 70.836W-70.847W. The two hayed sites are McH1 (hayed every year, north of
EXPERIMENTAL DESIGN AND METHODS: Samples for biomass measurements were collected along transects in two hayed and two reference sites. These are the same transects used in LTE-MD-VEGTRANS.xls and LTE-MD-VEGQUADS. Transects lengths varied from ca. 35-150 meters depending on the shape of the marsh. Quadrats (either 0.01 or 0.0625 m2) were placed down at 5 m (shorter transects) or 10 m (100+ m transects) intervals along the transect. Estimates of percent cover by species were recorded, then all plants within the quadrat were clipped at the surface of the sediment. Plants were then sorted into living and dead aboveground biomass. Living plants were sorted by species. Plant material was then dried at 60oC until constant weight (approximately 48 hrs) and then weighed on an electronic balance.
NOTES AND COMMENTS: Names of
observers: RB (Robert Buchsbaum), WD (Wendy
Dalia), ADR (April Ridlon), PB (Peter Britz), CN (Carl Noblett).
The
biomass data in this file is expressed in g per m2. The raw data entered onto original spreadsheet
contained the biomass in grams per quadrat, which was either 0.01 or 0.0625 m2
depending on the anticipated density of plants at each site.
The % cover data in this file are based on a rather small quadrat and were collected as a quality control procedure for the biomass samples. Use LTE-MD-VEGQUADS for vegetation analysis.
VARIABLE DESCRIPTION:
Site = area where data and plants were collected
Treatment = shows if site is a hayed area or a reference area
TRANSECT = Transect line along which
plants were observed and collected. Code
names are indicated under “RESEARCH LOCATION” above.
Interval = distance in meters along transect that quadrat was placed
down
Date = date plants harvested (DD-MMM-YY)
YEAR = Year of
collections
Observers = names
of people who collected data and samples (refer to
"Notes" field for abbreviations)
Quadrat size = size of sampling quadrat in m2 (either 0.01 or 0.0625)
sabiomassM2 =
biomass (in grams per m2) of Spartina alterniflora
sapcover = percent
cover of Spartina alterniflora in the biomass quadrats
saheight = height
(in cm) of tallest Spartina alterniflora in the quadrat
spbiomassM2 = biomass
(in grams per m2) of Spartina patens
sppcover = percent
cover of Spartina patens
SPHEIGHT = canopy height of Spartina patens
dsbiomassM2 = biomass
(in grams per m2) of Distichlis spicata
dspcover = percent
cover of Distichlis spicata
DSHEIGHT = canopy height of Distichlis spicata
jgbiomassM2 = biomass
(in grams per m2) of Juncus gerardii
jgpcover = percent
cover of Juncus gerardii
JGHEIGHT= canopy height of Juncus gerardi
sebiomassM2 = biomass
(in grams per m2) of Salicornia
europaea
sepcover = percent
cover of Salicornia europaea
SEHEIGHT= canopy height of Salicornia europaea
apbiomassM2 = biomass
(in grams per m2) of Atriplex patula
appcover = percent
cover of Atriplex patula
APHEIGHT= canopy height of Atriplex patula
ifbiomassM2 = biomass
(in grams per m2) of Iva frutescens
ifpcover = percent
cover of Iva frutescens
ssbiomasSM2 = biomass
(in grams per m2) of Solidago sempervirens
sspcover = percent
cover of Solidago sempervirens
slbiomassM2 = biomass
(in grams per m2) of Suaeda linearis
slpcover = percent
cover of Suaeda linearis
gMbiomass = biomass
(in grams per m2) of Glaux maritima
gMpcover = percent
cover of Glaux maritima
aRiomassM2 = biomass
(in grams per m2) of Agropyron repens
aRcover = percent
cover of Agropyron repens
deadbiomassM2 = biomass
(in grams per m2) of standing dead plant material
Comments = Additional notes
CALCULATIONS:
FOR MORE INFORMATION, CONTACT: Robert Buchsbaum
OTHER DATA FILES TO REFERENCE: LTE-MD-VEGTRANS.xls; LTE-MD-VEGQUADS.xls, LTE-MD-VEGSTN.xls, LTE-MF-GREENWOOD CLUBBHEAD EOY BIOMASS.xls
REFERENCE CITATIONS:
DATA AVAILABILITY STATUS: Type 2
ARCHIVE INFORMATION:
Date of entry:
Data entered by:
Comments: