Dataset title: Monitoring of nutrient and sulfide concentrations in porewaters of mangrove forests from the Shark River Slough and Taylor Slough, Everglades National Park (FCE LTER), South Florida, USA, ongoing since December 2000 Dataset ID: LT_ND_deMutsert_001 Research type: Long-term Dataset Creator Name: Dr. Edward Castaneda Position: LTER Project Collaborator Organization: Southeast Environmental Research Center Address: 11200 S.W. 8th Street OE 148 Miami, FL 33199 USA Phone: (305) 348-7479 (VH 332) Fax: 305-348-4096 Email: ecastane@fiu.edu URL: http://wetland.fiu.edu/ Name: Dr. Victor Rivera-Monroy Address: Department of Oceanography and Coastal Sciences Louisiana State University 3209 Energy, Coast, and Environment Building Baton Rouge, LA 70803 USA Phone: (225) 578-2773 Fax: (225) 578-6423 Email: vhrivera@lsu.edu URL: http://www.gulfbase.org/ Name: Dr. Robert Twilley Address: Department of Oceanography and Coastal Sciences Louisiana State University 3257 Energy, Coast, and Environment Building Baton Rouge, LA 70803 USA Phone: (225) 578-8806 Fax: (225) 578-6423 Email: rtwilley@lsu.edu URL: http://www.oceanography.lsu.edu/ Metadata Provider Organization: Florida Coastal Everglades LTER Program Address: Florida International University University Park OE 148 Miami, FL 33199 USA Phone: 305-348-6054 Email: fcelter@fiu.edu URL: http://fcelter.fiu.edu Dataset Abstract To monitor soil chemistry in the mangrove sites SRS4, SRS5 and SRS6, SRS7, and TS/Ph6b, TS/Ph7b and TS/Ph8, porewater concentrations of sulfide, PO4, NH4, NO2 and NO3 have been analyzed. Geographic Coverage Study Extent Description The Study Extent of this dataset includes 4 FCE Shark River Slough and 3 Taylor Slough research sites within Everglades National Park, South Florida. Bounding Coordinates Geographic description: FCE LTER Site SRS4 West bounding coordinate: -80.964 East bounding coordinate: -80.964 North bounding coordinate: 25.410 South bounding coordinate: 25.410 Geographic description: FCE LTER Site SRS5 West bounding coordinate: -81.032 East bounding coordinate: -81.032 North bounding coordinate: 25.377 South bounding coordinate: 25.377 Geographic description: FCE LTER Site SRS6 West bounding coordinate: -81.078 East bounding coordinate: -81.078 North bounding coordinate: 25.365 South bounding coordinate: 25.365 Geographic description: FCE LTER Site TS/Ph6b West bounding coordinate: -80.651 East bounding coordinate: -80.651 North bounding coordinate: 25.216 South bounding coordinate: 25.216 Geographic description: FCE LTER Site TS/Ph7b West bounding coordinate: -80.642 East bounding coordinate: -80.642 North bounding coordinate: 25.197 South bounding coordinate: 25.197 Geographic description: FCE LTER Site TS/Ph8 West bounding coordinate: -80.525 East bounding coordinate: -80.525 North bounding coordinate: 25.233 South bounding coordinate: 25.233 FCE LTER Sites: SRS4,SRS5,SRS6,TS/Ph6b,TS/Ph7b, TS/Ph8 All Sites Geographic Description:FCE LTER Site SRS4 Longitude:-80.964 Latitude:25.410 Geographic Description:FCE LTER Site SRS5 Longitude:-81.032 Latitude:25.377 Geographic Description:FCE LTER Site SRS6 Longitude:-81.078 Latitude:25.365 Geographic Description:FCE LTER Site TS/Ph6b Longitude:-80.651 Latitude:25.216 Geographic Description:FCE LTER Site TS/Ph7b Longitude:-80.642 Latitude:25.197 Geographic Description:FCE LTER Site TS/Ph8 Longitude:-80.525 Latitude:25.233 Geographic Description:FCE LTER Site SRS7 Longitude:-81.114 Latitude:25.353 Temporal Coverage Start Date: 2000-12-15 End Date: 2021-11-02 Data Table Entity Name: LT_ND_deMutsert_001.csv Entity Description: Monitoring of nutrient and sulfide concentrations in porewaters of mangrove forests from the Shark River Slough and Taylor Slough, Everglades National Park (FCE), South Florida Object Name: LT_ND_deMutsert_001.csv Data Format Number of Header Lines: 1 Attribute Orientation: column Field Delimiter: , Number of Records: Attributes Attribute Name: Site 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: Season Attribute Label: Season Attribute Definition: Wet for June-November and dry for December-May Storage Type: text Measurement Scale: Wet for June-November and dry for December-May Missing Value Code: Attribute Name: Plot Attribute Label: Plot ID number Attribute Definition: plot 1 or 2 within the site Storage Type: ordinal Measurement Scale: plot 1 or 2 within the site Missing Value Code: Attribute Name: Subplot Attribute Label: Subplot ID number Attribute Definition: subplot indicates which subdivision of the two plots Storage Type: ordinal Measurement Scale: subplot indicates which subdivision of the two plots Missing Value Code: Attribute Name: Depth Attribute Label: depth Attribute Definition: collection depth in the soil Storage Type: data Measurement Scale: Units: centimeter Precision: 1 Number Type: real Missing Value Code: -9999 (Value will never be recorded ) Attribute Name: Porewater_Sulfide Attribute Label: concentration Attribute Definition: sulfide concentration in porewaters Storage Type: data Measurement Scale: Units: millimolesPerLiter Precision: 0.001 Number Type: real Missing Value Code: -9999.000 (Value will never be recorded ) Attribute Name: Porewater_NH4 Attribute Label: concentration Attribute Definition: ammonia concentration in porewater Storage Type: data Measurement Scale: Units: microMolesPerLiter Precision: 0.001 Number Type: real Missing Value Code: -9999.000 (Value will never be recorded ) Attribute Name: Porewater_NO2 Attribute Label: concentration Attribute Definition: Nitrite concentration in porewaters Storage Type: data Measurement Scale: Units: microMolesPerLiter Precision: 0.001 Number Type: real Missing Value Code: -9999.000 (Value will never be recorded ) Attribute Name: Porewater_PO4 Attribute Label: concentration Attribute Definition: orthophosphate concentration in porewaters Storage Type: data Measurement Scale: Units: microMolesPerLiter Precision: 0.001 Number Type: real Missing Value Code: -9999.000 (Value will never be recorded ) Attribute Name: Porewater_NO3 Attribute Label: concentration Attribute Definition: Nitrate concentration in porewaters Storage Type: data Measurement Scale: Units: microMolesPerLiter Precision: 0.001 Number Type: real Missing Value Code: -9999.000 (Value will never be recorded ) Attribute Name: Porewater_NO2plusNO3 Attribute Label: concentration Attribute Definition: nitrite plus nitrate concentration in porewaters Storage Type: data Measurement Scale: Units: microMolesPerLiter Precision: 0.001 Number Type: real Missing Value Code: -9999.000 (Value will never be recorded ) Methods Sampling Description Two plots were designated in each mangrove site, which where subdivided into four subplots. In the middle of each subplot porewater samples for nutrient and sulfide analyses were collected repeatedly over 14 years next to physical data. The null hypothesis is that there is no difference between the six mangrove sites that were monitored. Two (20*20 m) plots per site in the mangrove forest are divided in four 10*10 m subplots, samples are taken in the middle of each subplot. Porewaters are sampled and physical data are measured 2-3 times a year in the middle of each subplot. Method Step Description Porewater samples were taken with a porewater sipper in the middle of each subplot. Sulfide samples were preserved in the field with a buffer solution and analyzed in the lab using a standard curve and a voltage meter connected to an Orion sulfide probe. Concentrations of orthophosphate, ammonium, nitrite and nitrate were determined using either a spectrophotometer, a Lachat auto analyzer or an OI analytical auto analyzer. Apha standard methods (1992) were used to derive the nutrient concentrations. Instrumentation YSI voltage meter and sulfide probe spectrophotometer OI analytical auto-analyzer Lachat auto-analyzer Quality Control Dataset QA/QC performed during analysis of samples; samples with 5% between lab replicates were redone; data is graphed to check for outliers and checked by second scientist Distribution Online distribution: https://pasta.lternet.edu/package/data/eml/knb-lter-fce/1171/11/d99ac76b47918ea4050e7931ca574246 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 inorganic nutrients mangroves porewater FCE LTER FCE LTER Florida Coastal Everglades LTER ecological research long-term monitoring Shark River Slough Everglades National Park Taylor Slough Porewater_Sulfide Porewater_NH4 Porewater_NO2 Porewater_PO4 Porewater_NO2+NO3 sulfide Data Submission Date: 2022-01-31 Maintenance This is a long-term nutrient dataset and subsequent data wil be appended.This data file combines files LT_ND_deMutsert_001 (original, v1, v2 & v3). The new PASTA file is LT_ND_deMutsert_001. The FCE program is discontinuing its practice of versioning data as of March 2013. Dataset Contact Name: Edward Castaneda Position: LTER Project Collaborator Organization: Southeast Environmental Research Center Address: Florida International University University Park OE 148 Miami, FL 33199 USA Phone: (305) 348-7479 (VH 332) Fax: 305-348-4096 Email: ecastane@fiu.edu URL: http://wetland.fiu.edu/ Position: Information Manager Organization: Florida Coastal Everglades LTER Program Address: Florida International University University Park 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-2013-SCI-0058 Dataset Submission Date 2022-01-31 Data Submission Notes A standard curve (Linear relationship) was used to convert absorbance readings to nutrient concentrations: y = ax+b.For sulfides, a standard curve (logarithmic; y = (a ln(x)+b) was used to convert voltage meter readings to sulfide concentrations; this result was divided by 32.064 to convert from mg/l to mM. The detection limit for sulfides is 0.003 mM. Values below detection limit are considered zero. Dataset Anomalies Sampling on site TS/Ph8 has been cancelled since January 2007. Sampling on sites TS/Ph6 & 7 was resumed on May 2010. Information Management Notes This is a long-term nutrient dataset and subsequent data wil be appended.This data file combines files LT_ND_deMutsert_001 (original, v1, v2 & v3). The new PASTA file is LT_ND_deMutsert_001. The FCE program is discontinuing its practice of versioning data as of March 2013.