Water quality monitoring is conducted at 26 National Estuarine Research Reserves (NERR) at four locations within or adjacent to the reserve. The following parameters are collected at least every 30 minutes: water temperature, specific conductivity, salinity, percent saturation, dissolved oxygen concentration, water depth, pH and turbidity. All water quality data loggers will be deployed from a known depth from the bottom at each site.
Research objectives The four dataloggers are deployed at Mar Negro area, major component of Jobos Bay Estuarine Research Reserve, and are suspended from a pole at one foot from the bottom of the selected site. Measurements are taken at thirty (30) minute intervals for approximately two-week periods. The sites are identified as representative of areas within the reserve and comparable to the sites ... that may be receiving impact from human activities in the surroundings areas. Station number six (6), is located in the proximity of Punta Colchones, close to the thermal discharge pipeline, which can be affected by high temperatures and sediment resuspension. Station number nine (9), the impacted site, collects water quality data in a site associated with runoff from littoral and basin mangroves areas. This sampling station is closer to the Electric Power Thermoelectric Plant, which makes it subject to runoff and potential spills contamination from this industrial facility. Information compiled from historical environmental documents indicate that station nine (9) was used as a disposal site for the residues of the previously operating sugar mill operation, which might have been a high organic input to the sediments. Station number ten (10), located in the mangrove lagoon area is the reference or unimpacted site. Station number eleven (11) is another possible impacted site. Housing development that is not provided with sewage treatment facilities are the potential source of contaminants for this Station. Septic tanks and possible direct disposal constitute the potential contamination sources. Runoffs from agricultural land and other contaminant transport through a drainage channel are possible hazards at station nine (9) and eleven (11).
SUPPLEMENTAL INFORMATION: Associated researchers and projects A water quality and plankton monitoring scheme was initiated in 1995, to monitor 12 stations in the Jobos Bay system. This effort, conducted by the Department of Natural and Environmental Resources Laboratory began in March 1995, using a Hydrolab Data sonde 3 with a Surveyor 3 readout system, monitoring the water column on a bimonthly time basis for abiotic parameter similar to the YSI. Monthly samples for nutrients, plankton and chlorophyll were conducted from March to October (Water Quality Monitoring-Spatial and temporal variations of main abiotic and plankton components in JOBNERR, 1996). Samplings were resumed in January 1996 and will be conducted until March 1997). Other remarks/notes
CURRENTNESS REFERENCE: Observed
SPATIAL DATA ORGANIZATION INFORMATION: Indirect Spatial Reference: Site location and character The Jobos Bay National Estuarine Research Reserve (JOBNERR) is located on the southern coastal plain of the island of Puerto Rico, a reserve within the West Indies geographical area. JOBNERR is composed of two major areas: (1) Mar Negro, located on the western margin of the Bay, and (2) Cayos Caribe, a chain of 15 tear-shaped islets located to the southeast. The Mar Negro area comprises the bulk of the Reserve, and consists of mangrove forests and a complex system of lagoons and channels interspersed with salt and mud flats. Coral reefs and seagrass beds, with small beach deposits and upland areas fringe Cayos Caribe mangrove islands. Station 6 is located in the bay close to the peninsular drape area in Mar Negro knows as Punta Colchones. The datalogger is deployed at about five meters from the emergence of the fallout pipe cooling water from the Thermoelectric Power Plant. This station is subject to high temperatures and sediment resuspension. The tidal range varies from 12 in. to 14 in. in the vicinity of the monitoring station. No fresh water input in the vicinity of the station is probable. The salinity at the vicinity of the monitoring station varies from 34.0 ppt to 35.7 ppt. The station pole is located at 17Â° 56’ 6.5"N and 66Â° 13’ 43.6"W. Station 9 is an impacted site and is located at the northeastern part of the Mar Negro unit. The sampling station is associated with the mangrove lagoon area and received the Thermoelectric Power Plant runoff through mudflats and areas adjacent. The tidal range varies from 12 in. to 14 in. in the vicinity of the monitoring station. No fresh water input in the vicinity of the station is probable. The salinity at the vicinity of the monitoring station varies from 0.0 ppt to 41.1 ppt. The station pole is located at 17Â° 56' 36.8" N and 66Â° 14' 18.5" W. Station 10 is located in a mangrove lagoon not impacted from upland or marine activities. It provided a reference for comparison of the data obtained in other stations, especially to the stations in Mar Negro lagoon environment. The tidal range varies from 12 in. to 14 in. in the vicinity of the monitoring station. No fresh water input in the vicinity of the station is probable. The salinity at the vicinity of the monitoring station varies from 0.0 ppt to 41.7 ppt. The pole is located at 17Â° 56' 20.3" N and 66Â° 45' 26.7" W. Station 11 datalogger is tied to a small pier stand in the westernmost lagoon in the Mar Negro unit. Although a chain from a small pier suspends this datalogger, and it has been deployed at the same depth of the other dataloggers. Non point sources of contaminants from residences and boating activities in the vicinity are probable. The lagoon is characterized by dark bottom, tidal range from 12 in. to 14 in., allegedly related to long term deposition of organic wastes from the sugar mill operation when the mill was operating. No fresh water input in the vicinity of the station is probable. The salinity at the vicinity of the monitoring station varies from 0.0 ppt to 36.7 ppt. The datalogger is suspended by a chain and localized at 17Â° 56' 41.8" N and 66Â° 15' 46.0" W. All monitoring is considered long term.
ATTRIBUTE ACCURACY REPORT: Anomalous/Suspect Data none Post deployment information LOGICAL CONSISTENCY REPORT: NACOMPLETENESS REPORT: Data collection period Station nine (9) sampling with the YSI began on December 20, 1995. Station ten (10) sampling with the YSI began on February 1, 1996. Station eleven (11) sampling with the YSI began on March 15, 1996. Station six (6) sampling with the YSI began ... on December 06, 1996. Deleted Data Missing Data Sonde not deployed until 12/20/95 12:30 LINEAGE/PROCESS STEP: PROCESS DESCRIPTION: Additional Description: Entry verification The Centralized Data Management Office re-processed all SWMP water data collected from 1995-2002 to include an identifying station code (three letter reserve code, two letter sampling site code and data type code), a four digit year date stamp (mm/dd/yyyy) and a corrected time column (hh:mm). With the new format, the use of periods to denote deleted or missing data has been abandoned. Hence, all periods contained in the SWMP water data collected prior 2003 were removed and left blank. : After retrieving and carefully cleaning the dataloggers, they are examined to detect any structural damage to the body or to the probes. The DO membrane is checked for ruptures and then replaced if needed. The turbidity probe is examined to assure that no obstruction affects the wiper and that the sensor is clean. Manipulation and observation are registered in the field log for each deployment respectively. The YSI is connected to a Pentium II 400 MHz IBM compatible computer and the data are reviewed using the YSI computer program PC6000 that accompanies the YSI 6000 datalogger. The file is uploaded in two formats, one in YSI PC6000 format and the other in Comma and "" Delimited format then the file is renamed to have a ".txt" extension. The YSI Ecowatch for Windows program is used to plot the data and delete the pre- and post deployment data that are not in range of the other readings. The program is used to perform basic statistical analysis (i,e., min., max., mean, std. dev.). This information is printed out with a list of data and filed for each station. The information obtained from this printout is used during file review to detect any gross outliers such as data taken when the datalogger was removed from the water or those caused by instrument failure. The data are imported into a Microsoft Excel file that contains the current month's cumulative recordings. When a complete month of data has been recorded the file is ready for review. The data review includes several steps. The first step is to format the data so that the parameter columns are in the correct order. Secondly, a modified Excel 97 version of the CDMO Excel 5.0 macro is used to check and determine if there are any dates and times that were not recorded due to maintenance, battery failure, or other cause. Missing dates and times are inserted into the file and a period is inserted into the cells where data would normally be. The reason for the missing data is recorded onto the Missing data Log. The data are then formatted so that the parameter columns are in the correct size and the data have the correct number of decimal place holders as specified by the NERR CDMO. Next, the data are filtered using the CDMO Excel 97 macro to find readings outside the instrument measurement range and the "normal" range for the site in question. Data outside the instrument range is/are removed from the file and a period is inserted to the cell(s). An explanation for the missing dates and time are recorded onto the Missing data Log. Data that were outside the "normal" range of water quality for a particular site is investigated for validity based on field observation, QC check, PC6000 printouts, and instrument diagnostics. If the datum is/are rejected from the file a period is inserted to the cell(s) and an explanation for the missing date and time is recorded onto the Missing data Log. The information recorded on the Missing data Log is transferred to the metadata form. The metadata form is then submitted with the data to the CDMO. Data is stores in zip disks. Dr. Pedro Robles, Research Coordinator is responsible for the data management. PROCESS DATE: 20060213
Data collected in conjunction with the National Estuarine Research Reserve System's (NERRS) System-wide Monitoring Program (SWMP) is considered public information. Please see site for further information: http://cdmo.baruch.sc.edu/aboutdata.htm
The principal investigator (PI) listed in the enclosed metadata retains the right to be fully credited for having collected and processed the data. Please see the site for further information: http://cdmo.baruch.sc.edu/aboutdata.htm