Dataset title: Sawgrass above ground biomass from the Shark River Slough, Everglades National Park (FCE LTER), South Florida, USA, November 2000 - ongoing Dataset ID: LT_PP_Grahl_001 Research type: Long-term Dataset Creator Name: Dr. Evelyn Gaiser Address: 11200 S.W. 8th Street Miami, Florida 33199 USA Phone: 305-348-6145 Fax: 305-348-4096 Email: gaisere@fiu.edu URL: http://algae.fiu.edu/ Name: Dr. Daniel Childers Address: Arizona State University PO Box 875402 Tempe, AZ 85287 USA Phone: 480-965-2320 Fax: 480-965-8087 Email: dan.childers@asu.edu Metadata Provider Organization: Florida Coastal Everglades LTER Program Address: Florida International University MMC OE 148 Miami, FL 33199 USA Phone: 305-348-6054 Email: fcelter@fiu.edu URL: http://fcelter.fiu.edu Dataset Abstract 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. Geographic Coverage Study Extent Description The Study Extent of this dataset includes the FCE Shark River Slough research sites within Everglades National Park, South Florida Bounding Coordinates Geographic description: FCE LTER Site SRS1b West bounding coordinate: -80.726 East bounding coordinate: -80.726 North bounding coordinate: 25.758 South bounding coordinate: 25.758 Geographic description: FCE LTER Site SRS2 West bounding coordinate: -80.785 East bounding coordinate: -80.785 North bounding coordinate: 25.550 South bounding coordinate: 25.550 Geographic description: FCE LTER Site SRS3 West bounding coordinate: -80.853 East bounding coordinate: -80.853 North bounding coordinate: 25.468 South bounding coordinate: 25.468 Geographic description: FCE LTER Site SRS1c West bounding coordinate: -80.574 East bounding coordinate: -80.574 North bounding coordinate: 25.755 South bounding coordinate: 25.755 Geographic description: FCE LTER Site SRS1d West bounding coordinate: -80.654 East bounding coordinate: -80.654 North bounding coordinate: 25.746 South bounding coordinate: 25.746 FCE LTER Sites: SRS1b, SRS1c, SRS1d, SRS2, SRS3 All Sites Geographic Description:FCE LTER Site SRS1b Longitude:-80.726 Latitude:25.758 Geographic Description:FCE LTER Site SRS2 Longitude:-80.785 Latitude:25.550 Geographic Description:FCE LTER Site SRS3 Longitude:-80.853 Latitude:25.468 Geographic Description:FCE LTER Site SRS1c Longitude:-80.574 Latitude:25.755 Geographic Description:FCE LTER Site SRS1d Longitude:-80.654 Latitude:25.746 Temporal Coverage Start Date: 2000-11-01 End Date: 2022-01-01 Data Table Entity Name: LT_PP_Grahl_001.csv Entity Description: Sawgrass above ground biomass from the Shark River Slough, Everglades National Park, South Florida Object Name: LT_PP_Grahl_001.csv Data Format Number of Header Lines: 1 Attribute Orientation: column Field Delimiter: , Number of Records: Attributes 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 ) Methods Sampling Description The number of sawgrass plants is counted for each 1 m^2 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 of the live leaves 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. Method Step Description The number of sawgrass plants is counted for each 1 m^2 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 of the live leaves 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. Instrumentation calipers meter sticks PC Quality Control Data is checked by the following Excel formula for possible data entry mistakes: [=IF(OR({TCH}<30,{CBD}>1.5),"Problem","")]. Once Biomass and Culm densities are calculated the PI and Techinician review the values for possible peaks and valleys (usually those that are greater than 2-3 times the previous and post values for a given site). Distribution Online distribution: https://pasta.lternet.edu/package/data/eml/knb-lter-fce/1084/10/4e12ae64ffd4678828f754c641430dfd Intellectual Rights This information is released under the Creative Commons license - Attribution - CC BY (https://creativecommons.org/licenses/by/4.0/). The consumer of these data ("Data User" herein) is required to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you. Dataset Keywords long term monitoring aboveground biomass plant biomass primary production biomass marshes FCE FCE LTER Florida Coastal Everglades LTER ecological research long-term monitoring Everglades National Park Shark River Slough plants biomass nutrients primary production productivity processes leaves water culm density above ground biomass Cladium jamaicense FCE LTER Data Submission Date: 2022-04-06 Maintenance This is a long-term primary production dataset and subsequent data will be appended. This dataset replaces all previous versions of LT_PP_Grahl_001 original and (v1-v8). The FCE program is discontinuing its practice of versioning data as of March 2013. Dataset Contact Name: Rafael Travieso Position: Technical Staff Organization: Southeast Environmental Research Center Address: Florida International University MMC OE 148 Miami, FL 33199 USA Phone: 305-348-7286 Fax: 305-348-4096 Email: travieso@fiu.edu URL: http://algae.fiu.edu/ Position: Information Manager Organization: Florida Coastal Everglades LTER Program Address: Florida International University MMC OE 148 Miami, FL 33199 USA Phone: 305-348-6054 Fax: 305-348-4096 Email: fcelter@fiu.edu URL: http://fcelter.fiu.edu Project permits EVER-2019-SCI-0055 Dataset Submission Date 2022-04-06 Data Submission Notes Biomass till Jan-04 = (0.6902+0.00317*TCH+0.30735*CDB+0.00058451*SLLB+0.00504*Fl Ht)^3.3333333, Biomass from Feb-04 on = (0.6902+0.00612*TCH+0.54446*CDB+0.00233*Fl Ht)^3.3333333. Dataset Anomalies At the below sites and dates, one third of the total plants in a plot were not measured: SRS1b: 01-Jan-01, 01-Mar-01, 01-May-02, 01-Nov-02, 01-Jul-03, 01-Nov-03, 01-Jan-04, 01-Jan-05; SRS1d: 01-Mar-07, 01-Nov-07, 01-Nov-08, 01-Jul-12, 01-Jan-17, 01-May-20; SRS2: 01-Jan-01, 01-May-01, 01-Jul-01, 01-Sep-01, 01-Jan-02, 01-Mar-02, 01-May-02, 01-Jan-03, 01-Jan-04, 01-May-07, 01-Jan-12, 01-Sep-13, 01-Jan-14, 01-Jan-17, 01-Mar-17, 01-Sep-17, 01-Nov-17, 01-Jun-18, 01-Sep-18, 01-Nov-17, 01-Jan-18, 01-Jan-19, 01-Mar-19, 01-Sep-19, 01-Nov-19, 01-Jan-20, 01-Mar-20, 01-May-20, 01-Jul-20, 01-Sep-20, 01-Nov-20, 01-Jan-21, 01-Mar-21, 01-May-21, 01-Jul-21, 01-Sep-21, 01-Nov-2021, 01-Jan-22; SRS3: 01-Nov-00, 01-Mar-01, 01-May-01, 01-Jul-01, 01-Sep-01, 01-Mar-02, 01-Mar-07, 01-Jul-08, 01-Sep-09, 01-Nov-09, 01-Jan-10, 01-Sep-13, 01-Nov-13, 01-Jan-14, 01-Mar-14, 01-May-14, 01-Jul-14, 01-Sep-14, 01-Nov-14, 01-Jan-15, 01-Mar-15, 01-May-15, 01-Jul-15, 01-Sep-15, 01-Nov-15, 01-Jan-16, 01-Mar-16, 01-May-16, 01-Jul-16, 01-Sep-16, 01-Nov-16, 01-Jan-17, 01-Mar-17, 01-May-17, 01-Jun-17, 01-Sep-17, 01-Nov-17, 01-Jan-18, 01-Mar-18, 01-May-18, 01-Jun-18, , 01-Sep-18, 01-Nov-17, 01-Jan-19, 01-Mar-19, 01-May-19, 01-Jul-19, 01-Sep-19, 01-Nov-19, 01-Jan-20, 01-Mar-20, 01-May-20, 01-Jul-20, 01-Sep-20, 01-Nov-20, 01-Jan-21, 01-Mar-21, 01-May-21, 01-Jul-21, 01-Sep-21, 01-Nov-2021, 01-Jan-22. Data is not available for Jul 2002 at site SRS1b at plot 1, so for Sawgrass_AG_Biomass (g/m2), Sawgrass_AG_Biomass_STD, Sawgrass_Culm_Density, and Sawgrass_Culm_Density_ STD only measurements from 2 plots were used (SRS1b-2 & SRS1b-3) during the Jul 2002 sampling event. On 22-Aug-11 a wildfire burned the vegetation at SRS1d plots, measurements of new plants started on 27-Sep-11; from September 2011 until January 2015 three non-burned plots were stablished and measured at the site, the non-burned data (Sawgrass_AG_Biomass, Sawgrass_AG_Biomass_STD, Sawgrass_Culm_densidy & Sawgrass_Culm_Density_STD) is reported as SRS1d non-burned sites. On September 2017 Hurricane Irma damaged the all the plots at SRS2 and SRS3, measurements of new plants started on November 2017. Information Management Notes This is a long-term primary production dataset and subsequent data will be appended. This dataset replaces all previous versions of LT_PP_Grahl_001 original and (v1-v8). The FCE program is discontinuing its practice of versioning data as of March 2013.