Plum Island Ecosystems LTER Database

Acceptance and utilization of LTER data requires that:

(1) The Principal Investigator be sent a notice stating reasons for acquiring any data and a description of the publication intentions.
(2) 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.
(3) A copy of any resultant publications should be sent to:

Principal Investigator
Ecosystems Center
Marine Biological Laboratory
7 MBL St.
Woods Hole, MA 02543

Dataset URLs:METADATA: HTML, Rich Text, XML(EML compliant)
DATA: Comma Delimited, Excel file with Metadata and data
Dataset ID:LTE-MD-EARLYVEG.02
Dataset Title:Biomass and shoot densities at hayed and reference sites for samples collected in June and early July 2000
Investigator 1: 
First Name:Robert
Last Name:Buchsbaum
Address line 1:Massachusetts Audubon, North Shore
Address line 2:Endicott Regional Center
Address line 3:356 Grapevine Road
City:Wenham
State:MA
Zip Code:01984
Country:USA
Associate Investigators:Amy Chiuchiolo, Linda Deegan , Julie Horowitz, Maria Mensching, GDA students
Keywords:PIE LTER, primary production, organic matter, population dynamics, haying, salt marsh, vegetation
Abstract:Biomass and shoot densities at hayed and reference sites for samples collected in June and early July 2000
Contact: Plum Island Ecosystems LTER Information Manager
The Ecosystems Center
Marine Biological Lab
7 MBL St
Woods Hole, MA 02543
Phone (508) 289 7485
Email: pie_im@mbl.edu
Online URL: http://ecosystems.mbl.edu/PIE/
DATA FILE INFORMATION:
Data File URL http://ecosystems.mbl.edu/PIE/data/LTE/data/LTE-MD-EARLYVEG.dat
Data File Name LTE-MD-EARLYVEG
Beginning Date 6/5/2000
End Date 7/6/2000
Number of Data Records 58
Other Files to Reference LTE-MD-VEGSTN.xls
Availability Status Type 1
Quality Control Information
Maintenance Description
Log of Changes: Version 01, initial Excel to EML metadata
Version 02 keyword update
 
RESEARCH LOCATION: Site 1 Site 2
Geographic Description Salt marsh that is hayed by Dan McHugh in Rowley, MA and reference areas in the vicinity of Stackyard and Patmos Roads. Four study sites (two hayed and two references). The two hayed sites are McH1 (hayed every year, north of Patmos Rd) and EPH (East of Perry's land and between Sawyer Creek and Patmos Rd, hayed every two years, last hayed in 1999). The two reference sites are PUH (Perry Unhayed, between Sawyer Creek and Patmos Rd) and Club Creek (S of Stackyard Rd and bounded on its E side by the PRNWR).  
Location Bounding Box    
West Bounding Coordinate -70.847  
East Bounding Coordinate -70.836  
North Bounding Coordinate 42.74  
South Bounding Coordinate 42.747  
OR if single point location    
Latitude    
Longitude    
Elevation    
     
     
 
TAXONOMIC COVERAGE:
Taxonomic Protocols
Organisms studied Spartina alterniflora; Spartina patens; Distichlis spicata; Juncus gerardi
 
Methods:Shoot densities and biomass of individual species within four vegetation zones (Spartina alterniflora, S. patens, Distichlis spicata, Juncus gerardi) were compared at four marsh sites (2 hayed and 2 reference). Sampling was carried out by placing three 0.1 m2 quadrats within identified vegetation zones at each marsh site. Plants were clipped at the surface of the substrate and then divided into live and dead material. The live plants were further separated into individual species. The number of shoots per species per quadrat was determined by counting individual shoots. After counting, plant material was dried at 60oC to constant weight (about 48 hrs) and the plants weighed on an electronic balance.

NOTES AND COMMENTS: Vegetation zones were determined visually and were therefore somewhat subjective. Abbreviations for “Collectr” RB (Robert Buchsbaum), AC (Amy Chiuchiolo), LD (Linda Deegan), JH (Julie Horowitz), MM (Maria Mensching), GDA (Governor Dummer students)

Data Table

Variable Name Variable Description Units Measurement Scale Code Information Number Type DateTime Format Missing Value Code Missing Value Code Explanation
DATE date when plants were collected   datetime     dd-mmm-yyyy    
Datesort date when plants were sorted by species   datetime     dd-mmm-yyyy    
Location area where plants were collected   nominal          
Treatm shows if site is a hayed area or a reference area   nominal          
Plantzon plant zone where collection took place (S. alterniflora, S. patens, etc.)   nominal          
Rep replicate number (three quadrats were collected for most samples)   nominal          
Shootden density of shoots of dominant species of that plant zone numberPerOneTenthMeterSquared ratio   real      
Collectr names of people who collected the samples   nominal RB =Robert Buchsbaum | AC =Amy Chiuchiolo | LD =Linda Deegan | JH =Julie Horowitz | MM =Maria Mensching | GDA =Governor Dummer students        
Sadens Density of shoots of Spartina alterniflora in number per 0.1 m2 numberPerOneTenthMeterSquared ratio   real      
Spdens Density of shoots of Spartina patens in number per 0.1 m2 numberPerOneTenthMeterSquared ratio   real      
Dsdens Density of shoots of Distichlis spicata in number per 0.1 m2 numberPerOneTenthMeterSquared ratio   real      
Jgdens Density of shoots of Juncus gerardii in number per 0.1 m2 numberPerOneTenthMeterSquared ratio   real      
SALdens Density of shoots of Salicornia europaea in number per 0.1 m2 numberPerOneTenthMeterSquared ratio   real      
Biomdom Biomass (in grams per 0.1 m2) of dominant species of that zone gramsPerOneTenthSquareMeter ratio   real      
Biomdead Biomass (in grams per 0.1 m2) of standing dead gramsPerOneTenthSquareMeter ratio   real      
Sabiom Biomass (in grams per 0.1 m2) of Spartina alterniflora gramsPerOneTenthSquareMeter ratio   real      
Spbiom Biomass (in grams per 0.1 m2) of Spartina patens gramsPerOneTenthSquareMeter ratio   real      
Dsbiom Biomass (in grams per 0.1 m2) of Distichlis spicata gramsPerOneTenthSquareMeter ratio   real      
Jgbiom Biomass (in grams per 0.1 m2) of Juncus gerardii gramsPerOneTenthSquareMeter ratio   real      
Comments additional notes pertaining to the observations   nominal