Metadata

• Name: Dr. Tiffany Troxler 
• Position: Project Collaborator
• Organization: Southeast Environmental Research Center
• Address: Florida International University
  University Park
  OE 148
  Miami, FL 33199 USA
• Phone: 305-348-1453
• Fax: 305-348-4096
• Email: troxlert@fiu.edu
• URL: http://wetland.fiu.edu/

• Name: Dr. Daniel Childers 
• Position: Associate Director for Research| Professor
• Organization: Global Institute of Sustainability| School of Sustainability
• Address: Arizona State University
  PO Box 875402
  Tempe, AZ 85287 USA
• Phone: 480-965-2320
• Fax: 480-965-8087
• Email: dan.childers@asu.edu

Sawgrass biomass is measured for TS/Ph-1, 2, 3, & 6 since 1999; TS/Ph-4 & 5 since 1997 to 2006; SRS-1b, 2, & 3 since 2000; SRS1c for 2005 to 2006, and SRS1d since 2006. Three 1 m2 plots are placed on each site. The sites are measured every two months. The number of sawgrass plants is counted for each 1 m2 plot and one third or a minimum of fifteen plants is measured. For each measured plant, measurements of the total number of live leaves, length of the live leaves, and culm diameter at the base are taken. From these measurements we calculate the average leaf length, and the sum of the length of the leaves. We created a model for biomass using a stepwise regression to see which of the variables measured and calculated are more correlated to explain plant biomass. Obtaining the mean biomass for the plants within the plot and multiplying it by the number of plants counted in the plot calculates biomass for each plot. The total biomass for each plot is summed with the other two plots in the same site, and they are averaged to obtain one biomass number per site. To validate our model, plant clippings are obtained in which four plants are clipped (small, medium, large, inflorescence) from each site. The same measurements are applied to the clipped plants as those applied to the measured plants in the plots. The plant clippings are oven dried at 70 degrees C and weighed.

All Sites

Start Date:   1997-10-01
End Date:   2006-12-01

• Data Table:   Sawgrass above ground biomass from the Taylor Slough, just outside Everglades National Park, South Florida
  Attribute Name:

  SITENAME

  Attribute Label:

  sitename

  Attribute Definition:

  Name of LTER site

  Storage Type:

  text

  Measurement Scale:

  Name of LTER site

  Missing Value Code:

   

  
  

  Attribute Name:

  Date

  Attribute Label:

  date

  Attribute Definition:

  Collection date

  Storage Type:

  datetime

  Measurement Scale:

  Missing Value Code:

   

  
  

  Attribute Name:

  Sawgrass_AG_Biomass

  Attribute Label:

  biomass

  Attribute Definition:

  Sawgrass above ground biomass

  Storage Type:

  data

  Measurement Scale:

  Units: gramsPerSquareMeter
  

  Precision: 0.0001
  Number Type: real

  Missing Value Code:

  -9999.0000 (Value will never be recorded )

  
  

  Attribute Name:

  Sawgrass_AG_Biomass_STD

  Attribute Label:

  standard deviation

  Attribute Definition:

  sawgrass above ground Biomass standard deviation

  Storage Type:

  data

  Measurement Scale:

  Units: gramsPerSquareMeter
  

  Precision: 0.0001
  Number Type: real

  Missing Value Code:

  -9999.0000 (Value will never be recorded )

  
  

  Attribute Name:

  Sawgrass_Culm_Density

  Attribute Label:

  culm density

  Attribute Definition:

  sawgrass culm density

  Storage Type:

  data

  Measurement Scale:

  Units: numberPerMeterSquared
  

  Precision: 0.01
  Number Type: real

  Missing Value Code:

  -9999.00 (Value will never be recorded )

  
  

  Attribute Name:

  Sawgrass_Culm_Density_STD

  Attribute Label:

  standard deviation

  Attribute Definition:

  sawgrass culm density standard deviation

  Storage Type:

  data

  Measurement Scale:

  Units: numberPerMeterSquared
  

  Precision: 0.01
  Number Type: real

  Missing Value Code:

  -9999.00 (Value will never be recorded )