Jobos Bay NERR Nutrient Metadata January 2004 to December 2004 Latest Update: May 16, 2004Entry ID: CDMO_jobnut01-12.04m
Abstract: Nutrient monitoring is conducted at 26 National Estuarine Research Reserves (NERR) from four locations within or adjacent to the reserve on a monthly basis of the following parameters: orthophosphate, ammonium, nitrite, nitrate, and chlorophyll a. Note: Reserves may collect additional parameters which are available by searching the Yearly Files directory.
Purpose: Research objectives Inorganic nutrients, particularly nitrogen and phosphorus are naturally found in mangrove and estuarine habitats. They can be significantly increased by human activities reaching the system through non-point source run-off or direct discharge. Eutrophication is defined as gradual accumulation of nutrients and organic biomass accompanied with an increase in photosynthesis and a ... decrease in the average deep of the water column caused by the accumulation of sediment. The objective of this study is to provide baseline information on inorganic nutrients and chlorophyll levels in the Jobos Bay estuary. It will also assess nutrients and chlorophyll levels in areas within the reserve that may be receiving impact from human activities from surroundings areas or may act as a habitat gradient in the Bay. In order to compare these with physical water quality parameters, monitoring sites were established at the four YSI?s datasonde stations. Station number nine (9), the impacted site, collects water quality data in a site associated with runoff from littoral and basin mangrove areas. This sampling station is located in the most inland lagoon, closest to the Thermoelectric Power Plant. It is subjected to runoff, which may include potential oil spill contamination from this industrial facility. Information compiled from historical environmental documents, indicate that station nine (9) was used as a disposal site for residues of the previously operating sugar mill operation, and therefore might have high organic input into the sediments. Station number ten (10), located in a mangrove lagoon area towards the southwestern section of Mar Negro is considered the reference or non-impacted site. Station 19 is located in Jobos Bay surrounded by sea grass beds composed of Thallasia testudinum. This station is close to the Power Plant transit channel, which allows barges to bring oil and gas into the Power Plant pier. This area is exposed to barge standings, sediment re-suspension and oil spills. Station 20 is located adjacent to Cayos Caribe reef. Water streams coming from the platform may bring to this station an indication of water conditions behind the coral reef wall. This water are part of the main marine current coming from the eastern side of Jobos Bay that runs along the coast, getting in contact with sensitive areas like coal plant, Phillips Core, Chemsource and other industries.
Associated researchers and projects A water quality monitoring using YSI 6600 data loggers started in December, 1995 to determine pH, salinity, turbidity, temperature, specific conductance, depth, dissolved oxygen saturation and concentration. The study "Assessment of nitrate contamination in the Salinas area, Puerto Rico" started at 2001 by the US Geological survey had the objetive of define potential sources of nitrogen and estimate the loads from the major sources , which have led to an increase in nitrate concentrations in the South Coastal Plain Aquifer. They found that nitrate concentration increased, compared to the results obtained in March 2002 in the mayority of the wells sampled. In nitrogen stable isotope analysis they found values of §15N that fall between 3 and 10 per mil, indicative of mixed inorganic and organic sources or soil organic source. We are still waiting for the final report. A new study started during 2004 ?Inventory of source of pollution of groundwater at las Mareas Community, Salinas Puero Rico". The main objetive of this study it's to identify sources of groundwater pollution and environmental health implications using georefereced data on th preatic level, geohydrology, water quality and location of known drinking water wells. This community it's located at the vicinity of Jobos Bay NERR specifically in the coast line and have a direct impact on our water resouces.
SPATIAL DATA ORGANIZATION INFORMATION:
Indirect Spatial Reference: Site location and character The Jobos Bay National Estuarine Research Reserve (JBNERR) is located on the southern coastal plain of the island of Puerto Rico, a reserve within the West Indies geographical area. JBNERR 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 sea grass beds, with small beach deposits and upland areas fringe Cayos Caribe mangrove islands. Station 9 (09) is an impacted site and is located on the northeastern section of the Mar Negro component. This sampling station is associated with mangrove lagoon areas and receives runoff from mudflats, the Thermoelectric Power Plant, and adjacent areas. The tidal range varies from 12 to 14 inches in the vicinity of the monitoring station. The salinity at the vicinity of the monitoring station varies from 0.0 ppt to 41.1 ppt. The average depth at station 09 is 1 meter. A thick layer of thin sediments with a high content of organic material covers the bottom. Brown and green algae are also present at this site, but a better assessment is needed. The station pole is located at 17° 56' 36.8" N and 66° 14' 18.5" W. Station 10 (10) is located in a mangrove lagoon not impacted directly by any upland or marine activities. It provides a reference for comparison of data obtained in other stations, especially to the station in Mar Negro lagoon. The tidal range varies from 12 to 14 inches. The salinity at the vicinity of the monitoring station varies from 0.0 ppt to 41.7 ppt. The average depth at station 10 is 1 meter. The bottom is covered with a layer of fine sediments with organic material, followed by a layer of calcareous material mainly from shells and oysters. At this site we can find sea grass (Thalassia), calcareous algae (Halimeda sp.), green algae (Caulerpa sp.) and brown algae (Dictyota sp.) among others. The pole is located at 17° 56' 20.3" N and 66° 45' 26.7" W. Station 19 (19) is located in the Bay surrounded by sea grass beds (Thallasia testudinum). 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 is approximately 35 ppt. The pole is located at 17° 56' 28.15885" N and 66° 13' 45.28784" W. Station 20 (20) is located near Cayos Caribe islets. The sonde is in contact with three streams of water that comes from Cayos Caribe reef platform. 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 is approximately 35 ppt. The pole is located at 17° 55' 49.14258" N and 66° 12' 41.29771" W.
Data Set Citation
Dataset Originator/Creator: Iris Tirado, Luis A. Encarnac, Enid Malav, Carol Pollard
Dataset Title: Jobos Bay NERR Nutrient Metadata January 2004 to December 2004 Latest Update: May 16, 2004
Dataset Release Date: 2006-02-23
Data Presentation Form: Unknown
Other Citation Details: NAOnline Resource: http://cdmo.baruch.sc.edu/
This description is a member of a collection. The collection is described in
Start Date: 2004-01-01Stop Date: 2004-12-31
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > CHLOROPHYLL
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > PHOSPHOROUS COMPOUNDS
OCEANS > COASTAL PROCESSES > ESTUARIES
OCEANS > OCEAN CHEMISTRY > NITRATE
OCEANS > OCEAN CHEMISTRY > NITRITE
OCEANS > OCEAN CHEMISTRY > PHOSPHATE
BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > ESTUARY
OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL
Quality ATTRIBUTE ACCURACY REPORT: Method Detection Limits (MDL), the lowest concentration of a parameter that an analytical procedure can reliably detect, have been established by the VIMS Nutrient Analytical Laboratory. The MDL is determined as 3 times the standard deviation of a minimum of 7 replicates of a single low concentration sample. Table 1 presents the current MDL?s; these values are reviewed ... and revised periodically. Table 1. Method Detection Limits (MDL) for measured water quality parameters. Parameter Variable Method Detection Limit Dates in use Ammonium NH4F 0.0054 mg/L as N 2004 Nitrate + Nitrite NO23F 0.0010 mg/L as N 2004 Nitrite NO2F 0.0002 mg/L as N 2004 Orthophosphate PO4F 0.0015 mg/L as P 2004 Chlorophyll a CHLA 0.50 ug/L 2004 Pheophytin PHEA 0.50 ug/L 2004 Nutrient/Chla comment codes and definitions are provided in the following table. Missing data are denoted by a blank cell ? ? and commented coded with an ?M?. Laboratories in the NERRS System submit data that are censored at a lower detection rate limit, called the Method Detection Limit or MDL. MDL?s for specific parameters are listed in the Laboratory Methods and Detection Limits Section (Section I, Part 12) of this document. Concentrations that are less than this limit are denoted by a ?9999 and comment coded with a ?B? in the variable code comment column. For example, the measured concentration of NO23F was 0.0005 mg/L as N (MDL=0.0008), the reported value would be -9999 with a ?B? placed in the NO23F comment code column. Calculated parameters are comment coded with a ?C? and if any of the components used in the calculation are below the MDL, the calculated variable is denoted by ?9999 and also comment coded with a ?B?. If a calculated value is negative, the value is reported as a -9999 and comment coded ?N?. Nutrient/Chla Monitoring Program Flag Column Code: A = Value above upper limit of detection B = Value below method detection limit C = Calculated value D= Deleted data H = Sample held beyond specific holding time K = Check metadata for further information N = Negative Calculated value M = Data missing, sample never collected or calculated value could not be determined due to missing data P = Significant rainfall U= Lab analysis from unpreserved sample S = Data suspect, see metadata for further details h) Precision: i) Field Variability ? True field replicates are taken at each site during grab sampling. The one replicate is a successive grab. Sample XXXXXX-G1 is taken and the sampler emptied. The grab sampler is deployed once again to acquire XXXXXX-G2. ii) Laboratory Variability ? none iii) Inter-organizational splits ? samples were not split or analyzed by two different labs i) Accuracy: i) Sample Spikes ?information unavailable ii) Standard Reference Material Analysis ?information unavailable iii) Cross Calibration Exercises ? DNERR did not participate in cross calibration exercises. LOGICAL CONSISTENCY REPORT: NACOMPLETENESS REPORT: Data collection period Station nine (9) sampling of nutrients began on January 14, 2004 Station nine (10) sampling of nutrients began on January 15, 2004 Station nine (19) sampling of nutrients began on January 15, 2004 Station nine (20) sampling of nutrients began on January 15, 2004 Diel Sampling (All times in EST) Site Start Date Start Time End Date End Time 09 01/14/2004 1030 01/15/2004 0830 09 02/10/2004 0930 02/11/2004 0730 09 03/09/2004 0900 03/10/2004 0700 09 04/06/2004 0930 04/07/2004 0730 09 05/04/2004 1000 05/05/2004 0800 09 06/02/2004 0830 06/03/2004 0630 09 07/13/2004 0930 07/14/2004 0730 09 08/03/2004 0900 08/04/2004 0700 09 09/07/2004 0930 09/08/2004 0730 09 10/13/2004 0930 10/14/2004 0730 09 11/17/2004 0900 11/18/2004 0700 09 12/15/2004 1000 12/16/2004 0800 Grab Sampling (All times in EST) Site Start Date Rep 1 Time Start Date Rep 2 Time 09 01/15/2004 0859 01/15/2004 0859 09 02/11/2004 0815 02/11/2004 0815 09 03/10/2004 0907 03/10/2004 0907 09 04/07/2004 0834 04/07/2004 0834 09 05/05/2004 0830 05/05/2004 0830 09 06/03/2004 0848 06/03/2004 0848 09 07/14/2004 0920 07/14/2004 0920 09 08/04/2004 0920 08/04/2004 0920 09 09/08/2004 0920 09/08/2004 0920 09 10/14/2004 0920 10/14/2004 0920 09 11/18/2004 0920 11/18/2004 0920 09 12/16/2004 0920 12/16/2004 0920 Site Start Date Rep 1 Time Start Date Rep 2 Time 10 01/15/2004 0837 01/15/2004 0837 10 02/11/2004 0755 02/11/2004 0755 10 03/10/2004 0843 03/10/2004 0843 10 04/07/2004 0819 04/07/2004 0819 10 05/05/2004 0810 05/05/2004 0810 10 06/03/2004 0810 06/03/2004 0810 10 07/14/2004 0919 07/14/2004 0919 10 08/04/2004 0849 08/04/2004 0849 10 09/08/2004 0849 09/08/2004 0849 10 10/14/2004 0849 10/14/2004 0849 10 11/18/2004 0849 11/18/2004 0849 10 12/16/2004 0849 12/16/2004 0849 Site Start Date Rep 1 Time Start Date Rep 2 Time 19 01/15/2004 0828 01/15/2004 0828 19 02/11/2004 0735 02/11/2004 0735 19 03/10/2004 0819 03/10/2004 0819 19 04/07/2004 0909 04/07/2004 0909 19 05/05/2004 0900 05/05/2004 0900 19 06/03/2004 0827 06/03/2004 0827 19 07/14/2004 0827 07/14/2004 0827 19 08/04/2004 0827 08/04/2004 0827 19 09/08/2004 0827 09/08/2004 0827 19 10/14/2004 0827 10/14/2004 0827 19 11/18/2004 0827 11/18/2004 0827 19 12/16/2004 0827 12/16/2004 0827 Site Start Date Rep 1 Time Start Date Rep 2 Time 20 01/15/2004 0920 01/15/2004 0920 20 02/11/2004 0905 02/11/2004 0905 20 03/10/2004 0940 03/10/2004 0940 20 04/07/2004 0900 04/07/2004 0900 20 05/05/2004 0910 05/05/2004 0910 20 06/03/2004 0910 06/03/2004 0910 20 07/14/2004 0946 07/14/2004 0946 20 08/04/2004 0953 08/04/2004 0953 20 09/08/2004 0953 09/08/2004 0953 20 10/14/2004 0953 10/14/2004 0953 20 11/18/2004 0953 11/18/2004 0953 20 12/16/2004 0953 12/16/2004 0953 LINEAGE/PROCESS STEP: PROCESS DESCRIPTION: Additional Description: After the results of nutrients sampling arrives from VIMS laboratory to Jobos Bay NERR the data was verified before being sent to the CDMO to be archived into the permanent database. The person responsible of this task is the Research Coordinator of the reserve Iris L. Tirado. PROCESS DATE: 20060223
Access Constraints 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
NOAA/ERD retains the right to analyze, synthesize and publish summaries of the NERRS ... System-wide Monitoring Program data. The PI retains the right to be fully credited for having collected and processed the data. Following academic courtesy standards, the PI and NERR site where the data were collected will be contacted and fully acknowledged in any subsequent publications in which any part of the data are used. Manuscripts resulting from this NOAA/OCRM supported research that are produced for publication in open literature, including refereed scientific journals, will acknowledge that the research was conducted under an award from the Estuarine Reserves Division, Office of Ocean and Coastal Resource Management, National Ocean Service, National Oceanic and Atmospheric Administration. The data set enclosed within this package/transmission is only as good as the quality assurance and quality control procedures outlined by the enclosed metadata reporting statement. The user bears all responsibility for its subsequent use/misuse in any further analyses or comparisons. The Federal government does not assume liability to the Recipient or third persons, nor will the Federal government reimburse or indemnify the Recipient for its liability due to any losses resulting in any way from the use of this data. NERR water quality data and metadata can be obtained from the Research Coordinator at the individual NERR site (please see Section 1. Principal investigators and contact persons), from the Data Manager at the Centralized Data Management Office (please see personnel directory under the general information link on the CDMO home page) and online at the CDMO home page http://cdmo.baruch.sc.edu/. Data are available in text tab-delimited format, Microsoft Excel spreadsheet format and comma-delimited format.
Use Constraints 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
Data Set Progress
Distribution Format: Ascii File, Formatted For Text Attributes, Declared Format (ASCII)NA
Fees: Data is available at no charge.
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Creation and Review Dates
DIF Creation Date: 2006-02-24
Last DIF Revision Date: 2016-11-18