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Groundwater and surface water phosphorus concentrations, Everglades National Park (FCE), South Florida for June, July, August and November 2003


At a Glance


Authors: Rene Price
Time period: 2003-06-20 to 2003-11-25
Package id: knb-lter-fce.1142.2
Dataset id: PHY_Price_001

How to cite:
Price, R.. 2006. Groundwater and surface water phosphorus concentrations, Everglades National Park (FCE), South Florida for June, July, August and November 2003. Environmental Data Initiative. https://doi.org/10.6073/pasta/2b42a17496155b8a7ce2191ae90e193b. Dataset accessed 2020-02-28.

Geographic Coverage


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Detailed Metadata


  • Dataset Creator(s)
    • Name: Dr Rene Price 
    • Position: Principal Investigator
    • Organization: Florida Coastal Everglades LTER Program
    • Address: 11200 SW 8th St. SERC OE-148
      Miami, FL 33199 USA
    • Phone: 305-348-3119
    • Fax: 305-348-3877
    • Email: pricer@fiu.edu
    • URL: www.fiu.edu/~pricer

  • Dataset Abstract
    Seawater intrusion into a coastal aquifer mixes with the discharging fresh water to form a zone of mixed composition. This mixing zone is considered to be geochemical important in a carbonate aquifer as an area of enhanced carbonate mineral dissolution and,or precipitation. Ion exchange reactions are also common within the mixing zone as the dominant cation in seawater, sodium, replaces other ions adsorbed to the aquifer matrix. Phosphorus has a strong affinity for adsorption to calcium carbonate minerals. Both the dissolution of calcium carbonate minerals as well as ion exchange reactions have the potential to release phosphorus from the aquifer matrix to the groundwater. Discharge of this phosphorus-laden groundwater, as induced by the fresh/saline water interface, may then be an additional source of phosphorus to the overlying coastal environments. Both surface water and groundwater were collected across the seawater intrusion zone of the coastal Everglades in south Florida during the summer of 2003. Hydrogen sulfide was released from the groundwater wells during sampling, indicating the groundwater was most likely anoxic. In order to reduce the potential exposure of the groundwater to oxygen during sampling, groundwater samples were collected in the following manner. Groundwater wells were first purged of at least three well volumes prior to sampling. Water samples were then collected using a submersible pump with a 16-gauge needle fitted at the end of the discharge hose. The needle was pushed through a rubber stopper covering an acid-washed vacutainer that was first flushed with nitrogen gas to remove and oxygen, then evacuated with a vacuum pump to establish a negative pressure within the vacutainer. Water samples were stored on ice and transported to the laboratory. Samples were processed for total phosphorus using colorimetery following dry-oxidation/acid hydroloysis methods within 1 to 5 days following sample collection. Salinity of the groundwater and surface water was determined at the time of sampling using an Orion S-C-T meter. Total phosphorus concentrations in 11 groundwater wells ranged from 0.5 to 2.3 uM (16 to 73.6 ug/L-P). Concentrations of total phosphorus in the overlying surface water were consistently lower and ranged from 0.16 to 0.45 uM (5.1 to 14.4 ug/L-P). There was a strong positive correlation between total phosphorus concentrations in the groundwater with salinity (R2=0.6). The results of this investigation indicate enhanced phosphorus concentrations within mixing zone groundwaters underlying the southern Everglades. These concentrations exceed the expected values predicted by conservative mixing of local fresh groundwater and intruding seawater, which both have TP less than 1 uM.
  • 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
    Data were collected in the Shark River Slough, within Everglades National Park, South Florida
    N: 25.761, S: 25.201, E: -80.648, W: -81.164

    Florida Coastal Everglades LTER Study Area: South Florida, Everglades National Park, and Florida Bay
    N: 25.761, S: 24.913, E: -80.490, W: -81.078

    All Sites
    Geographic Description
    Bounding Coordinates
    CANEPATCH GW
    N: 25.42, S: 25.42, E: -80.94, W: -80.94
    CANEPATCH SW
    N: 25.42, S: 25.42, E: -80.94, W: -80.94
    CH1 GW
    N: 25.73, S: 25.73, E: -81.16, W: -81.16
    CH1 SW
    N: 25.73, S: 25.73, E: -81.16, W: -81.16
    E-130 DEEP
    N: 25.33, S: 25.33, E: -80.65, W: -80.65
    E-130 SHALLOW
    N: 25.33, S: 25.33, E: -80.65, W: -80.65
    E-130 SW
    N: 25.33, S: 25.33, E: -80.65, W: -80.65
    E-146 DEEP
    N: 25.25, S: 25.25, E: -80.67, W: -80.67
    E-146 SHALLOW
    N: 25.25, S: 25.25, E: -80.67, W: -80.67
    E-146 SW
    N: 25.25, S: 25.25, E: -80.67, W: -80.67
    E-146-27 GW
    N: 25.25, S: 25.25, E: -80.67, W: -80.67
    G-3302A
    N: 25.76, S: 25.76, E: -80.70, W: -80.70
    LO1 GW
    N: 25.61, S: 25.61, E: -81.03, W: -81.03
    LO1 SW
    N: 25.61, S: 25.61, E: -81.03, W: -81.03
    RB-1 GW
    N: 25.46, S: 25.46, E: -80.88, W: -80.88
    RB-1 SW
    N: 25.46, S: 25.46, E: -80.88, W: -80.88
    SH-1 GW
    N: 25.49, S: 25.49, E: -80.86, W: -80.86
    SH-1 SW
    N: 25.49, S: 25.49, E: -80.86, W: -80.86
    TARPON BAY GW
    N: 25.39, S: 25.39, E: -81.01, W: -81.01
    TARPON BAY SW
    N: 25.39, S: 25.39, E: -81.01, W: -81.01
    UPPER TAYLOR RIVER
    N: 25.21, S: 25.21, E: -80.65, W: -80.65
    UTR DEEP GW
    N: 25.21, S: 25.21, E: -80.65, W: -80.65
    UTR SHALLOW GW
    N: 25.21, S: 25.21, E: -80.65, W: -80.65
  • Attributes
    • Data Table:   Groundwater and surface water phosphorus concentrations, Everglades National Park (FCE), 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:
      Water_Type
      Attribute Label:
      type
      Attribute Definition:
      Water Type
      Storage Type:
      text
      Measurement Scale:
      Water Type
      Missing Value Code:
       

      Attribute Name:
      Sampling_Depth
      Attribute Label:
      depth
      Attribute Definition:
      Sampling Depth
      Storage Type:
      data
      Measurement Scale:
      Units: meter
      Precision: 0.1
      Number Type: real
      Missing Value Code:
      -9999.0 (Value will never be recorded )

      Attribute Name:
      Temperature
      Attribute Label:
      temperature
      Attribute Definition:
      Water Temperature
      Storage Type:
      data
      Measurement Scale:
      Units: celsius
      Precision: 0.1
      Number Type: real
      Missing Value Code:
      -9999.0 (Value will never be recorded )

      Attribute Name:
      pH
      Attribute Label:
      pH
      Attribute Definition:
      Water pH
      Storage Type:
      data
      Measurement Scale:
      Units: dimensionless
      Precision: 0.01
      Number Type: real
      Missing Value Code:
      -9999.00 (Value will never be recorded )

      Attribute Name:
      Salinity
      Attribute Label:
      salinity
      Attribute Definition:
      Water Salinity
      Storage Type:
      data
      Measurement Scale:
      Units: PSU
      Precision: 0.1
      Number Type: real
      Missing Value Code:
      -9999.0 (Value will never be recorded )

      Attribute Name:
      TP
      Attribute Label:
      total phosphorus
      Attribute Definition:
      total phosphorus
      Storage Type:
      data
      Measurement Scale:
      Units: microMolesPerLiter
      Precision: 0.01
      Number Type: real
      Missing Value Code:
      -9999.00 (Value will never be recorded )


  • Methods
    Sampling Description
    Prior to sampling, all wells were purged of at least three well volumes. Surface water was collected either adjacent to the groundwater wells or from the canals. To reduce the exposure of anoxic groundwater to oxygen during sampling, groundwater samples were collected directly into acid-washed, evacuated blood collection tubes that were first flushed with nitrogen gas. Samples were processed for TP using colorimetery following dry-oxidation/acid hydrolysis methods (Solorzano & Sharp, 1980) within 1 to 5 days of sample collection. The pH, specific conductance and/or salinity, and temperature were recorded at the time of sample collection using an Orion pH, and S/C/T meter, respectively.

    Method Step

    Description
    Prior to sampling, all wells were purged of at least three well volumes. Surface water was collected either adjacent to the groundwater wells or from the canals. To reduce the exposure of anoxic groundwater to oxygen during sampling, groundwater samples were collected directly into acid-washed, evacuated blood collection tubes that were first flushed with nitrogen gas. Samples were processed for TP using colorimetery following dry-oxidation/acid hydrolysis methods (Solorzano & Sharp, 1980) within 1 to 5 days of sample collection. The pH, specific conductance and/or salinity, and temperature were recorded at the time of sample collection using an Orion pH, and S/C/T meter, respectively.

    Citation
    Solarzano, L. , J. H. Sharp. 1905-06-02. Determination of total dissolved phosphorus and particulate phosphorus in natural waters.. Limnology and Oceanography, 25: 754-758.

    Instrumentation
    Shimadzu UV/Vis Scanning SpectrophotometerOrion model S/C/T meter

    Quality Control
    Data QA/QC involves running a standard curve and checking for linearity, then running the samples in duplicate.
  • Distribution and Intellectual Rights
    Online distribution
    http://fcelter.fiu.edu/perl/public_data_download.pl?datasetid=PHY_Price_001.txt
    Data Submission Date:  2006-01-02

    Intellectual Rights
    These data are classified as 'Type I' whereby original FCE LTER experimental data collected by individual FCE researchers are available for scientific purposes 2 years after collection. Maximum lock period = 2 years. All publications based on this dataset must cite the data Contributor, the Florida Coastal Everglades Long-Term Ecological Research (LTER) Program and that this material is based upon work supported by the National Science Foundation through the Florida Coastal Everglades Long-Term Ecological Research program under Cooperative Agreements #DBI-0620409, and #DEB-9910514. Additionally, two copies of the manuscript must be submitted to the Florida Coastal Everglades LTER Program Office, LTER Program Manager, Florida International University, Southeast Environmental Research Center, OE 148, University Park, Miami, Florida 33199. For a complete description of the FCE LTER Data Distribution and Data User Agreement, please go to FCE Data Management Policy at http://fcelter.fiu.edu/data/DataMgmt.pdf and LTER Network Data Access Policy at http://fcelter.fiu.edu/data/core/data_user_agreement/distribution_policy.html.

  • Keywords
    FCE, Florida Coastal Everglades LTER, ecological research, long-term monitoring, water, groundwater, phosphorus, salinity, pH, total phosphorus, processes, temperature, specific conductivity, surface water, hydrology, Shark River Slough
  • Dataset Contact
    • Position: Information Manager
    • Organization: LTER Network Office
    • Address: UNM Biology Department, MSC03-2020
      1 University of New Mexico
      Albuquerque, NM 87131-0001 USA
    • Phone: 505 277-2535
    • Fax: 505 277-2541
    • Email: tech-support@lternet.edu
    • URL: http://www.lternet.edu

    • Name: Rene Price 
    • Position: 11200 SW 8th St. SERC OE-148
    • Organization: Florida International University
    • Address: Miami
      FL, 33199 USA 305-348-3119
    • Phone: 305-348-3877
    • Fax: pricer@fiu.edu
    • Email: PI
    • URL: www.fiu.edu/~pricer

    • 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

  • Data Table and Format
    Data Table:  Groundwater and surface water phosphorus concentrations, Everglades National Park (FCE), South Florida

    Entity Name:
    PHY_Price_001
    Entity Description:
    Groundwater and surface water phosphorus concentrations, Everglades National Park (FCE), South Florida
    Object Name:
    PHY_Price_001
    Number of Header Lines:
    1
    Attribute Orientation:
    column
    Field Delimiter:
    ,
    Number of Records:
    23