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), Florida, USA, December 2000 - ongoing Dataset ID: LT_ND_deMutsert_001 Research type: Long-term Dataset Creator Name: Dr. John Kominoski Organization: Florida Coastal Everglades LTER Address: Florida International University 11200 SW 8th Street, OE 148 Miami, FL 33199 Phone: 305-348-7117 Email: jkominos@fiu.edu URL: https://kominoskilab.com/ Name: Dr. Edward Castañeda-Moya Organization: Florida Coastal Everglades LTER Address: Florida International University 11200 SW 8th Street, OE 148 Miami, FL 33199 USA Phone: 305-348-7479 Email: edwardcm@gmail.com URL: https://wetland.fiu.edu/ Name: Dr. Victor Rivera-Monroy Organization: Florida Coastal Everglades LTER Address: Department of Oceanography and Coastal Sciences Louisiana State University Baton Rouge, LA 70803 USA Phone: 225-578-2773 Email: vhrivera@lsu.edu URL: https://www.gulfbase.org Name: Dr. Robert Twilley Organization: Florida Coastal Everglades LTER Address: Department of Oceanography and Coastal Sciences Louisiana State University Baton Rouge, LA 70803 USA Phone: (225) 578-8806 Email: rtwilley@lsu.edu URL: https://www.lsu.edu/cce/academics/graduate/docs/index.php Name: Caitlin Reisa Organization: Florida Coastal Everglades LTER Email: creisa@fiu.edu Metadata Provider Organization: Florida Coastal Everglades LTER Address: Florida International University 11200 SW 8th Street 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, SRS6, and SRS7, and TS/Ph6b, TS/Ph7b and TS/Ph8, porewater concentrations of sulfide, PO4, NH4, NO2 and NO3 have been analyzed. See also related porewater-physical-characteristics data package knb-lter-fce.1169 (https://portal.edirepository.org/nis/mapbrowse?scope=knb-lter-fce&identifier=1169). 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: SRS4 West bounding coordinate: -80.964 East bounding coordinate: -80.964 North bounding coordinate: 25.41 South bounding coordinate: 25.41 Geographic description: SRS5 West bounding coordinate: -81.032 East bounding coordinate: -81.032 North bounding coordinate: 25.377 South bounding coordinate: 25.377 Geographic description: SRS6 West bounding coordinate: -81.078 East bounding coordinate: -81.078 North bounding coordinate: 25.365 South bounding coordinate: 25.365 Geographic description: SRS7 West bounding coordinate: -81.114 East bounding coordinate: -81.114 North bounding coordinate: 25.353 South bounding coordinate: 25.353 Geographic description: TS/Ph6b West bounding coordinate: -80.651 East bounding coordinate: -80.651 North bounding coordinate: 25.216 South bounding coordinate: 25.216 Geographic description: TS/Ph7b West bounding coordinate: -80.642 East bounding coordinate: -80.642 North bounding coordinate: 25.197 South bounding coordinate: 25.197 Geographic description: 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, SRS7,TS/Ph6b,TS/Ph7b, TS/Ph8 Temporal Coverage Start Date: 2000-12-15 End Date: 2023-10-09 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: SITENAME Attribute Label: sitename Attribute Definition: Name of LTER site Storage Type: text Measurement Scale: text 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: text 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: text 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: text 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: millimolePerLiter 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: micromolePerLiter 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: micromolePerLiter 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: micromolePerLiter 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: micromolePerLiter 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: micromolePerLiter 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 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 Oakton® pH 150 Waterproof Portable 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. Submission notes: Sampling on site TS/Ph8 has been cancelled since January 2007. Sampling on sites TS/Ph6 & 7 was resumed on May 2010. Instrumentation Oakton® pH 150 Waterproof Portable meter, 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/1171/14/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 Porewater_NH4 Porewater_NO2 Porewater_PO4 Porewater_NO2+NO3 Porewater_Sulfide FCE FCE LTER Florida Coastal Everglades LTER ecological research Everglades National Park long-term monitoring Shark River Slough Taylor Slough sulfide mangroves porewater inorganic nutrients Maintenance knb-lter-fce.1171.14: Updated data and metadata (including addition of QUDT unit annotations) Dataset Contact Name: Dr. John Kominoski Organization: Florida Coastal Everglades LTER Address: Florida International University 11200 SW 8th Street, OE 148 Miami, FL 33199 Email: jkominos@fiu.edu Name: Dr. Edward Castañeda-Moya Organization: Florida Coastal Everglades LTER Address: Florida International University 11200 SW 8th Street, OE 148 Miami, FL 33199 USA Phone: (305) 348-7479 Email: Edward.Castaneda@miamidade.gov Position: Information Manager Organization: Florida Coastal Everglades LTER Address: Florida International University 11200 SW 8th Street OE 148 Miami, FL 33199 USA Email: fcelter@fiu.edu URL: http://fcelter.fiu.edu Project permits EVER-2001-SCI-0071 EVER-2002-SCI-0070 EVER-2003-SCI-0067 EVER-2004-SCI-0070 EVER-2005-SCI-0081 EVER-2007-SCI-0065 EVER-2009-SCI-0070 EVER-2011-SCI-0071 EVER-2013-SCI-0058 EVER-2015-SCI-0062 EVER-2017-SCI-0054 EVER-2019-SCI-0055 EVER-2022-SCI-0029 EVER-2023-SCI-0011 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.