Hudson River (HUD) NERR Nutrient Metadata January - December 2004 Latest Update: September 12, 2005
Entry ID:
CDMO_hudnut01-12.04m
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Summary
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 Monthly Grab Sampling The objective of this study is to monitor nutrient concentrations at the Tivoli Bays component of the Hudson River National Estuarine Research Reserve. Grab samples are taken from two freshwater tidal wetlands, Tivoli North Bay and Tivoli South Bay, and their primary upland tributaries, Stony Creek and Saw Kill Creek respectively. YSI datasondes are ... deployed at all grab sampling sites and meteorological data are collected continuously, thus relationships can be established between nutrient levels, the aquatic environment, and meteorological conditions. The tributaries are sampled above the area of tidal influence, allowing for determination of nutrient inputs to the Tivoli Bays via stream flow. This is important because it has previously been determined that urban and residential land use practices are markedly influencing the water chemistry of the tributaries, especially Saw Kill Creek. Since residential coverage continues to increase, we hope that the intensive monitoring of the surface waters in this watershed will identify trends caused by this rapid development. Tivoli North and South Bays are sampled on an ebb tide, which accounts for nutrient inputs to the wetlands via stream flow and tidal exchange, and includes the influence of intertidal areas on nutrient levels. In addition, ebb tide sampling allows for determination of nutrient inputs to the Hudson River Estuary via the Tivoli Bays. Diel Sampling Monthly diel sampling is conducted at Tivoli South Bay. Diel sampling highlights the relative importance of tidal forcing on nutrient levels within Tivoli South Bay through the inclusion of two complete tidal cycles. Sampling on a flood tide allows for isolation of nutrient inputs via tidal exchange. As with grab sampling, diel sampling on an ebb tide accounts for nutrient inputs via tidal exchange and stream flow and includes the influence of intertidal areas on nutrient levels. The combination of grab and diel sampling data will provide a better understanding of the relative importance of each water source in terms of nutrient delivery to Tivoli South Bay. In addition, these data will help us develop a better understanding of the effects of the intertidal area on nutrient dynamics.
SUPPLEMENTAL INFORMATION:
Associated researchers and projects The HUDNERR water quality monitoring program examines the physical and chemical constituents of tributary and tidal waters entering and leaving HUDNERR marshes. Field measurements include dissolved oxygen, alkalinity, pH, temperature, salinity, and conductivity. Laboratory measurements include concentrations of suspended solids, nitrate, phosphate, sulfate, and chloride. Meteorological data are collected continuously at the Tivoli Bays component site, including air temperature, barometric pressure, precipitation, wind speed and direction, relative humidity and photosynthetically active radiation. These data will help us to better understand the relationships between the atmospheric and aquatic environments at this component site. Associated researchers working at Tivoli Bays include scientists from the Institute of Ecosystem Studies, Millbrook, NY; Yale School of Forestry and Environmental Studies, New Haven, CT; and Rensselaer Polytechnic Institute, Troy, NY. Other Remarks
CURRENTNESS REFERENCE:
Observed
SPATIAL DATA ORGANIZATION INFORMATION:
Indirect Spatial Reference: Site location and character The Hudson River National Estuarine Research Reserve (HUDNERR) is a multi-component site totaling approximately 5,000 acres. Each component of the reserve is referenced by River Mile (RM) of the Hudson River in New York State proceeding north from the southern tip of Manhattan (RM 0). The reserve includes the following four component sites: Piermont Marsh, Rockland County (RM 24)(41o02'30"N 73o54'15"W), Iona Island, Rockland County (RM 45)(41o18'15"N 73o58'45"W), Tivoli Bays, Dutchess County (RM 98)(42o02'15"N 73o55'10"W), and Stockport Flats, Columbia County (RM 124)(42o02'30"N 73o46'00"W). The four component sites include open water, tidal wetland, and adjacent upland buffer habitats and are representative of the diverse plant and animal communities that occupy the salinity gradient within the Hudson River Estuary. Development within the watersheds of the four component sites ranges from predominantly urban/suburban to forested/agricultural. The highlighted component for this study is the Tivoli Bays in Annandale, NY. This component includes four monitored sites: Tivoli South Bay, Tivoli North Bay, Saw Kill Creek, and Stony Creek. All four monitored sites are freshwater (0.0 ppt salinity). Tivoli South Bay (latitude 42° 01' 37.336" N, longitude 73° 55' 33.445" W) is a tidal freshwater wetland with intertidal mudflats exposed at low tide. During the growing season (June – September), the subtidal area of Tivoli South Bay is dominated by the invasive floating macrophyte Trapa natans. Tivoli South Bay has a tidal range of 1.19 meters and a soft, silt/clay bottom type. The depth at the sampling location ranges from 0.5 to 2.5 meters. The non-tidal freshwater input to Tivoli South Bay includes that of a large upland tributary and a few small perennial streams. Tivoli North Bay (latitude 42° 02' 11.56464" N, longitude 73° 55' 31.16645" W) is a freshwater tidal marsh with emergent marsh vegetation dominated by the cattail Typha angustifolia. Tivoli North Bay has a tidal range of 1.19 meters, a soft, silt/clay bottom type, and a depth range from 0.5 to 3.0 meters at the sampling location. The non-tidal freshwater input to Tivoli North Bay includes that of a large upland tributary and a few small perennial streams. Saw Kill Creek (latitude 42° 01' 01.543" N, longitude 73° 54' 53.589" W) is the main tributary flowing into Tivoli South Bay. The Saw Kill Creek watershed is 26.6 square miles and land use within the watershed includes forested (51.1%), agricultural (25.8%), and urban (16.5%) areas. Characteristics of Saw Kill Creek at the sampling location include a rocky bottom type, a depth range of 0.5 to 2.0 meters, and discharge that can range from 2x10-5 to 1.2 m3/sec. Stony Creek (latitude 42° 02' 45.556" N, longitude 73° 54' 40.237" W) is the main tributary flowing into Tivoli North Bay. The Stony Creek watershed is approximately 23 square miles and is dominated by agricultural land use. Characteristics of Stony Creek at the sampling location include a solid rock bottom and a depth range of 0.5 to 1.5 meters. Stony Creek discharge is currently being determined. Both Stony Creek and Saw Kill Creek are non-tidal and freshwater input to the tributaries consists of smaller creeks in the watershed. The entire tidal Hudson River south of the Troy Dam is affected by polychlorinated biphenyls (PCBs), and Tivoli North and South Bays have low sedimentary concentrations of PCBs. Nutrient inputs to the Tivoli Bays via the non-tidal tributaries are the main concern in terms of pollutants. High concentrations of nitrate and phosphate have previously been documented in both Saw Kill Creek and Stony Creek. Saw Kill Creek appears to be strongly influenced by residential land use practices. This highlights the importance of continued monitoring and identification of non-point sources of pollution at these sites. 
Geographic Coverage
(Click for Interactive Map)
Spatial coordinates
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N: 42.36
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S: 41.01
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E: -73.76
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W: -73.99
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Data Set Citation
Dataset Originator/Creator:
William C. Nieder, Geofrey E. Eckerlin, Denise A. Schmidt Manager
Dataset Title:
Hudson River (HUD) NERR Nutrient Metadata January - December 2004 Latest Update: September 12, 2005
Dataset Release Date:
2006-02-23
Data Presentation Form:
Unknown
Other Citation Details:
NA
Online Resource:
http://cdmo.baruch.sc.edu/
Parent DIF
This data set description is a member of a collection. The
collection is described in
noaanosnerr_d_nerrparent
Temporal Coverage
Start Date:
2004-01-01
Stop Date:
2004-12-31
Quality
ATTRIBUTE ACCURACY REPORT: Limits of Detection A method detection limit (MDL), the lowest concentration of a parameter an analytical procedure can reliably detect, has been established by the IES Analytical Laboratory for each parameter. The MDL is determined as three times the standard deviation of a minimum of 10 replicates of a single low concentration sample. These values are reviewed and ... revised periodically. The current MDLs are listed below. Parameter Variable MDL Dates in Use Ammonium NH4F 0.02 mg/L as N 1991-2004 Nitrate NO3F 0.004 mg/L as N * 1991-2004 Orthophosphate PO4F 0.0006 mg/L as P 1991-2004 Chlorophyll a CHLA_N 0.02 ug/L 2004 Phaeophytin PHEA_N 0.02 ug/L 2004 Total Suspended TSS 0.1 mg/L 2004 Solids *NITRATE IS NOT ANALYZED DOWN TO THE DETECTION LIMIT; HUDNERR HAS BEEN USING 0.128 mg/L NO3 (ion) AS THE CONCENTRATION OF THE LOWEST NITRATE STANDARD FOR SAMPLE ANALYSIS SINCE 1991. THEREFORE, THE MINIMUM REPORTED CONCENTRATION (MRC) OF NITRATE AS NITROGEN IS 0.029 mg/L. Reporting of Missing Data and Data with Concentrations Lower than Method Detection Limits Comment codes and definitions are provided in the following table (Table 1). Explanations for samples that were never collected are reported below. Missing data from collected samples 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 II, 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. 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. Table 1. Variable comment codes table. Comment Code Definition A Value above upper limit of method detection B Value below method detection limit C Calculated value D Data deleted or calculated value could not be determined due to deleted data, see metadata for details H Sample held beyond specified holding time K Check metadata for further details M Data missing, sample never collected or calculated value could not be determined due to missing data N Negative calculated value P Significant precipitation (reserve defined, see metadata for further details) U Lab analysis from unpreserved sample S Data suspect, see metadata for further details Missing data events during the 2004 sampling period: a) Grab Sampling: January 2004: Monthly grab samples were not collected at TS and TN due to winter conditions preventing safe access. February 2004: Monthly grab samples were not collected TS and TN due to winter conditions preventing safe access. October 2004: Monthly grab sample NH4 data are missing at all four sites due to miscommunication with analytical laboratory. b) Diel Sampling: June 2004: Samples were collected but not processed due to severe illness of the technician September 2004: Due to a miscommunication with the laboratory, NO3, PO4, and TSS data are missing for the entire deployment 9/13/2004 19:30 - 9/14/2004 23:00. November 2004, The Isco relayed the error message “distributor jammed” for the first sample on 11/3/2004. The 11:30 sample was not collected. All other samples were collected with no further errors. QA/QC Programs a) Precision i) Field variability At each monitored site, monthly duplicate grab samples are true replicates, collected separately and sequentially, not simultaneously. During diel sampling at Tivoli South Bay, two samples are collected at each time, but one is acidified for ammonium analysis. Therefore, diel samples do not have replicates. ii) Laboratory variability At each monitored site, duplicate monthly grab samples are analyzed for NO3F, PO4F, and NH4F, providing two true replicates for each parameter. CHLA_N and PHEA_N are also analyzed as true replicates, one from each grab sample. Diel samples are analyzed for NO3F, PO4F, NH4F, CHLA_N and PHEA_N, but only one replicate is analyzed for each parameter. Analytical QA/QC procedures include periodic duplicate analysis of the same sample in order to verify precision of the analytical instrumentation. iii) Inter-organizational Splits None. b) Accuracy i) Sample Spikes Site % Recovery of Parameter NH4 NO3 PO4 TS 75 90 90 SK 75 90 90 TN 75 75 75 SC 70 90 90 ii) Standard Reference Material Analysis Performed in March 2004 for NH4, NO3, and PO4. iii) Cross Calibration Exercises Performed for chlorophyll a in October 2004. LOGICAL CONSISTENCY REPORT: NACOMPLETENESS REPORT: Data collection period Monthly grab samples have been collected at the four monitored sites of the Tivoli Bays since 06/17/1991. Diel sampling at Tivoli South Bay began in June 2002. The exact dates and times for the 2004 Nutrient Data collection period are listed below. Data collection is hampered during the winter months (December-March) because snow and ice often prohibit safe access to the sites. a) Grab Sampling Site Start Date Start Time End Date End Time SC 1/20/2004 13:33 1/20/2004 13:35 SC 3/1/2004 10:50 3/1/2004 10:52 SC 3/23/2004 10:25 3/23/2004 10:27 SC 4/29/2004 12:40 4/29/2004 12:42 SC 5/18/2004 7:50 5/18/2004 7:52 SC 6/21/2004 10:08 6/21/2004 10:10 SC 7/20/2004 8:22 7/20/2004 8:24 SC 8/11/2004 13:25 8/11/2004 13:27 SC 9/17/2004 9:19 9/17/2004 9:21 SC 10/27/2004 7:28 10/27/2004 7:30 SC 11/18/2004 15:15 11/18/2004 15:17 SC 12/15/2004 9:45 12/15/2004 9:47 SK 1/20/2004 14:01 1/20/2004 14:03 SK 3/1/2004 11:12 3/1/2004 11:14 SK 3/23/2004 10:50 3/23/2004 10:52 SK 4/29/2004 13:10 4/29/2004 13:12 SK 5/18/2004 8:10 5/18/2004 8:12 SK 6/21/2004 9:04 6/21/2004 9:06 SK 7/20/2004 7:52 7/20/2004 7:54 SK 8/11/2004 10:46 8/11/2004 10:48 SK 9/17/2004 8:07 9/17/2004 8:09 SK 10/27/2004 8:19 10/27/2004 8:21 SK 11/18/2004 15:45 11/18/2004 15:47 SK 12/15/2004 11:30 12/15/2004 11:32 TN January 2004 No sample TN February 2004 No sample TN 3/23/2004 9:40 3/23/2004 9:42 TN 4/29/2004 13:43 4/29/2004 13:45 TN 5/18/2004 7:12 5/18/2004 7:14 TN 6/21/2004 9:42 6/21/2004 9:44 TN 7/20/2004 9:02 7/20/2004 9:04 TN 8/11/2004 15:25 8/11/2004 15:27 TN 9/17/2004 8:47 9/17/2004 8:49 TN 10/27/2004 7:01 10/27/2004 7:03 TN 11/18/2004 11:40 11/18/2004 11:42 TN 12/15/2004 11:00 12/15/2004 11:02 TS January 2004 No sample TS February 2004 No sample TS 3/23/2004 10:00 3/23/2004 10:02 TS 4/29/2004 13:55 4/29/2004 13:57 TS 5/18/2004 7:25 5/18/2004 7:27 TS 6/21/2004 9:28 6/21/2004 9:30 TS 7/20/2004 8:47 7/20/2004 8:49 TS 8/11/2004 15:15 8/11/2004 15:17 TS 9/17/2004 8:33 9/17/2004 8:35 TS 10/27/2004 6:53 10/27/2004 6:55 TS 11/18/2004 11:20 11/18/2004 11:22 TS 12/15/2004 10:45 12/15/2004 10:47 b) Diel Sampling Site Start Date Start Time End Date End Time TS 5/5/2004 20:45** 5/7/2004 00:15** TS 6/8/2004 00:00* 6/9/2004 03:30* TS 7/6/2004 23:30 7/8/2004 03:00 TS 8/2/2004 09:30 8/3/2004 13:00 TS 9/13/2004 19:30 9/14/2004 23:00 TS 10/7/2004 03:00 10/8/2004 06:30 TS 11/3/2004 11:30 11/4/2004 15:00 TS 12/8/2004 17:15 12/9/2004 20:45 *See Section 14 for further information ** Attempts were made at diel sampling in April, however, overnight freezing temperatures precluded successful completion. The tubing on the ISCO sampler would clog with ice preventing many of the samples being taken. Therefore sampling did not begin until May 2004. LINEAGE/PROCESS STEP: PROCESS DESCRIPTION: Additional Description: Entry verification Following sample analysis (ammonium, nitrate, orthophosphate), data files are transferred directly from analytical instruments to desktop computers. Reports are generated as Excel spreadsheets and verified by the head of the IES analytical laboratory. The Excel spreadsheets are then sent to Hudson River Research Reserve staff. Data are examined for completeness, consistency and outliers. Suspect data are flagged, data are reviewed at IES, and if possible, samples are analyzed a second time. For chlorophyll a and phaeophytin data, raw fluorescence data are entered by hand into spreadsheets that have been set up to perform necessary calculations. Entered data are checked twice for errors and calculated values are examined for completeness, consistency and outliers. Suspect data are flagged. All laboratory data are then assigned an ID and imported into an Access database. Field data are entered directly into Access with a corresponding sample ID. The field and laboratory data for the four sites described here are then queried out of Access, imported into Excel, reformatted and pre-processed with the NutrientRound.xls macro. The NutrientRound.xls macro was developed by the CDMO in order to prevent incorrect reporting of directly measured values, incorrect rounding of values, and incorrect reporting of calculated values. The macro formats data to a specified number of decimal places and utilizes banker’s rounding rules for rounding numbers. The data are then imported into EQWin and archived in a permanent database. The research assistant is responsible for QA/QC of the data. 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
DISTRIBUTION LIABILITY:
Distribution According to the Ocean and Coastal Resource Management Data Dissemination Policy ... for the NERRS System-wide Monitoring Program, 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 the 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/quality control procedures outlined by the enclosed metadata reporting statement. The user bears all responsibility for 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 nutrient 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 and database 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
COMPLETE
Distribution
Distribution Format:
Ascii File, Formatted For Text Attributes, Declared Format (ASCII)NA
Fees:
Data is available at no charge.
Personnel
Role:
TECHNICAL CONTACT
Role:
DIF AUTHOR
Contact Address:
New York State Department of Environmental Conservation
City:
Annandale
Province or State:
NY
Postal Code:
12504
Country:
USA
Creation and Review Dates
DIF Creation Date:
2008-08-01
Last DIF Revision Date:
2008-10-10
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