Chesapeake Bay National Estuarine Research Reserve in Virginia (CBV) NERR Nutrient Metadata (January-December, 2002) Date last revised: October 1, 2004
Entry ID:
CDMO_cbvnut01-12.02m
|
[
Get Data
]
[
Update this Record
]
|
Updating this record requires registration.
|
Summary
Abstract:
Research objectives Monthly Grab Monthly grab samples were collected to quantify the spatial and temporal variability of selected nutrients and plant pigments in the water column along a salinity gradient within the York River estuary system. Diel Sampling Program On a monthly basis, samples were collected at Taskinas Creek, a small tributary of the ... York River,
every two and one-half hours throughout a complete tidal cycle in order to quantify the
short-term temporal variability of selected nutrients and plant pigments in the water
column.
SUPPLEMENTAL INFORMATION:
Associated researchers and projects Additional water quality
monitoring programs within the York River system include: a) USEPA Chesapeake Bay Mainstem and
Tributary Monitoring Program. Since 1984, biweekly to monthly water quality sampling at a series
of sites located along the mid-river channel has been conducted as part of the Chesapeake Bay
Program www.chesapeakebay.net). Station ID's: York River proper (WE4.2, LE4.3, LE4.2,
LE4.1, RET4.3), the Pamunkey River (RET4.1, TF4.2) and Mattaponi River (RET4.2 and TF4.4). b)
VIMS Shoal Survey. Since 1984, biweekly to monthly water quality sampling at a series of sites
located along the shoal areas of the lower York River estuary has been conducted by the
Biological Sciences Department at the Virginia Institute of Marine Science. Station
ID's include: Guinea Marsh, Goodwin Island, VIMS, Yorktown, Mumfort Islands, Catlett
Islands and Clay Bank. c. Alliance for the Chesapeake Bay Volunteer Monitoring Program. Physical
and chemical (limited nutrients) data are collected by a volunteer network along the York River
system (www.Acb-online.org). Station ID's include: Thorofare Creek, Wormley Creek,
Blackwell Landing, Pamunkey Trail, Timberneck Creek, Yorktown Naval Weapons Station, Gloucester
Point, West Point and Croaker Landing. Note: Some stations may be inactive. d. VIMS Juvenile
Abundance Monitoring Survey. As part of their Juvenile Abundance Monitoring Surveys, water
quality and hydrographic data has been collected since 1968 along a series of sites in the York
River estuary (includes the Mattaponi and Pamunkey River systems) by the Fisheries Science
Department www.fisheries.vims.edu/research.html at the Virginia Institute of Marine Science.
Surveys include the VIMS Trawl Survey, the Striped Bass Seine Survey and the Juvenile Shad/River
Herring Pushnet Survey. e. Virginia Department of Health. The Virginia Department of Health,
Division of Shellfish Sanitation's www.vdh.state.va.us/shellfish) Seawater Sampling
Program collects microbial and general water quality and hydrographic data along a series of
sites in the York River estuary (includes lower portions of the Mattaponi and Pamunkey River
systems). Other Remarks Precipitation data for the sampling date and three days prior to the
monthly grab and diel sampling programs. Data are presented for three meteorological stations,
locations are the Virginia Institute of Marine Science at Gloucester Point (VIMS), the Sweet
Hall Marsh reserve and the Taskinas Creek reserve. Data units are in mm. Type of Sampling
Previous Dates VIMS Sweet Hall Taskinas Monthly Grab 1/13/2002 5 3 5 Monthly Grab 1/14/2002 0 0
0 Monthly Grab 1/15/2002 0 0 0 Monthly Grab 1/16/2002 0 0 0 Diel 1/26/2002 0 0 0 Diel 1/27/2002
0 0 0 Diel 1/28/2002 0 0 0 Diel 1/29/2002 0 0 0 Monthly Grab 2/9/2002 0 0 0 Monthly Grab
2/10/2002 2 2 0 Monthly Grab/Diel 2/11/2002 0 0 0 Monthly Grab/Diel 2/12/2002 0 0 0 Diel
2/13/2002 0 0 0 Diel 2/14/2002 0 0 0 Diel 3/21/2002 0 0 0 Monthly Grab/Diel 3/22/2002 0 0 0
Monthly Grab/Diel 3/23/2002 0 0 0 Monthly Grab/Diel 3/24/2002 0 0 0 Monthly Grab 3/25/2002 0 0 0
Diel 4/14/2002 0 0 0 Monthly Grab/Diel 4/15/2002 4 5 8 Monthly Grab/Diel 4/16/2002 0 0 0 Monthly
Grab/Diel 4/17/2002 0 0 0 Monthly Grab/Diel 4/18/2002 5 7 3 Monthly Grab 5/18/2002 8 13 10
Monthly Grab/Diel 5/19/2002 0 0 0 Monthly Grab/Diel 5/20/2002 0 0 0 Monthly Grab/Diel 5/21/2002
0 0 0 Diel 5/22/2002 0 0 0 Monthly Grab 6/16/2002 0 1 0 Monthly Grab/Diel 6/17/2002 0 1 3
Monthly Grab/Diel 6/18/2002 0 0 0 Monthly Grab/Diel 6/19/2002 0 0 0 Diel 6/20/2002 0 0 0 Diel
7/14/2002 9 6 37 Monthly Grab/Diel 7/15/2002 0 0 13 Monthly Grab/Diel 7/16/2002 0 0 0 Monthly
Grab/Diel 7/17/2002 0 0 0 Monthly Grab/Diel 7/18/2002 0 0 0 Diel 8/16/2002 0 4 2 Monthly
Grab/Diel 8/17/2002 13 16 4 Monthly Grab/Diel 8/18/2002 0 0 0 Monthly Grab/Diel 8/19/2002 0 0 0
Monthly Grab/Diel 8/20/2002 0 0 0 Monthly Grab 9/16/2002 10 12 11 Monthly Grab/Diel 9/17/2002 0
0 0 Monthly Grab/Diel 9/18/2002 0 0 0 Monthly Grab/Diel 9/19/2002 0 0 0 Diel 9/20/2002 0 0 0
Diel 10/11/2002 29 22 34 Monthly Grab/Diel 10/12/2002 2 1 1 Monthly Grab/Diel 10/13/2002 0 0 0
Monthly Grab/Diel 10/14/2002 0 0 0 Monthly Grab/Diel 10/15/2002 4 6 4 Diel 11/11/2002 0 0 0
Monthly Grab/Diel 11/12/2002 17 0 9 Monthly Grab/Diel 11/13/2002 9 0 3 Monthly Grab/Diel
11/14/2002 0 0 8 Monthly Grab/Diel 11/15/2002 0 0 0 Monthly Grab 12/13/2002 8 14 18 Monthly
Grab/Diel 12/14/2002 0 14 0 Monthly Grab/Diel 12/15/2002 0 0 0 Monthly Grab/Diel 12/16/2002 0 0
0 Diel 12/17/2002 0 0 0
CURRENTNESS REFERENCE:
Observed
SPATIAL DATA ORGANIZATION INFORMATION:
Indirect Spatial Reference: Site location and character a) Goodwin Islands (37( 13
07.63N, 76( 2343.85W) The Goodwin Islands component of the
CBNERRVA is located on the southern side of the mouth of the York River. The Goodwin Islands are
a 315 ha (777 acre) archipelago of salt-marsh islands surrounded by inter-tidal flats, extensive
submerged aquatic vegetation (SAV) beds (121 ha; 300 acres). Water circulation patterns around
the island are influenced by York River discharge and wind patterns of the Chesapeake Bay. Tides
at the Goodwin Islands are semi-diurnal and display an average range of 0.7 m (range: 0.4 - 1.1
m). Water quality conditions described here are from data recorded between October 1997 and
December 1998. During this period mean water temperature at the Goodwin Islands sampling station
ranged from 7 °C in winter to 27 °C in summer. Minimum and maximum water temperatures recorded
were 2.3 °C (January) and 31.6 °C (July). Mean monthly salinity ranged from 9.9 ppt (January)
to 27.5 ppt (November). Mean salinity was greatest (23-25 ppt) during the summer and fall and
lowest (13-15 ppt) during the winter and spring. Mean dissolved oxygen readings were typically
near saturation during this time period except between July-August. Dissolved oxygen readings
ranged from 23.6% (October) to 195.7% saturation (May); hypoxia is rarely observed. b) York
River Bridge (37( 1441.60N, 76( 3018.80W). The
Coleman Bridge station is located in the mid-channel approximately 9 km from the mouth of the
York River estuary between Gloucester Point and Yorktown, Virginia. The sampling station is
located within the polyhaline region with a mean depth of 21 meters and a tidal range of 0.75
meters. c) Catlett Islands (37° 18' N; 76° 33' W) The Catlett Islands are located
approximately 20 km from the mouth and on the north side of the York River in Gloucester County,
Virginia. Timberneck Creek flows into the York River on the eastern side of the Catlett Islands
and Cedarbush Creek enters the river on the western side. Poplar Creek bisects the two large
areas of the Catlett Islands. Catlett Islands encompass 280 ha (690 acres) and displays a
ridge-and-swale geomorphology. The islands consist of multiple parallel ridges of forested
wetland hammocks, forested upland hammocks, emergent wetlands and tidal creeks surrounded by
shallow subtidal areas that once supported beds of submerged aquatic vegetation. Water quality
ranges listed here are based on weekly volunteer citizen water quality monitoring that has been
ongoing since the incorporation of the site in 1990. Surface water temperatures range from 5.4
°C to 27.4 °C. Salinity is indicative of mesohaline conditions, ranging from 14-18 ppt in the
fall to 8.2-12 ppt in the spring. Dissolved oxygen concentration ranges from 4.2 to 14.0 mg/L.
Tidal range is on the order of 0.75 meters. d) Claybank (37( 2051.58N,
76( 3637.52W). The Claybank station is a shallow (2m) littoral
area approximately 300-400 meters wide and located within the mesohaline portion of the York
River estuary, approximately 26 km upriver from the mouth of the estuary. The shoreline consists
of a narrow fringe of salt marsh with some areas armored with bulkhead or stone. Tidal range is
on the order of 0.85 meters. This station is located along the north shoreline of the estuary in
an area that was vegetated with submersed aquatic vegetation prior to 1972 but has remained
unvegetated since that time. The sediment consists of muddy sands. The sampling station is
influenced by a secondary turbidity maximum that moves back and forth in a region of about 20-40
km from the mouth of the York River estuary. The site is exposed to strong winds from the
northwest and re-suspension of sediment during storm events can be high. In 1998 observed
surface water temperatures ranged from 6 °C to 28 °C and salinities from 5 ppt to 20 ppt. e)
Taskinas Creek (37( 2453.86N, 76( 4251.82W).
Taskinas Creek Reserve encompasses 397 ha (980 acres) and is located in York River State Park
near the town of Croaker, in James City County, Virginia. The small sub-estuary of the York
River is located on the southern side of the river, approximately 22 km upriver from VIMS and 37
km from the mouth of the York River. The Taskinas Creek watershed is representative of an inner
coastal plain rural watershed within the southern Chesapeake Bay system. The watershed is
dominated by forested and agricultural land uses with an increasing residential land use
component. The non-tidal portion of Taskinas Creek contains feeder streams that drain
oak-hickory forests, maple-gum-ash swamps and freshwater marshes. Freshwater mixed wetlands are
found in the upstream reaches of Taskinas Creek. Taskinas Creek is roughly 2 meters deep and 20
meters wide towards the lower end of the creek. Mean tide range is 0.85 m. Sub-tidal substrates
are dominated by fine sediments. Mean water temperature from 1997 to 1998 was 5-7 °C during the
winter and 26-28 °C in the summer. The minimum and maximum water temperature recorded between
1996-1998 was - 0.7 °C in January of 1996 and 35.1 °C in July 1998. Mean salinity in Taskinas
Creek was on the order of 14-16 ppt in the summer and 3-5 ppt in the winter for 1997-1998.
Minimum and maximum salinity recorded in 1996 - 1998 was 0.1 ppt in March 1996 and 20.3 ppt in
November 1998. Mean dissolved oxygen values in 1996 and 1997 were lowest in the summer and
greatest in the winter. Mean dissolved oxygen values below 50% saturation were only observed
during parts of July 1996 and June 1997. Hypoxia was rarely observed and when present and lasted
less than 2% of the time. Mean dissolved oxygen readings 100% saturation
(supersaturation) is frequently observed. Wildlife populations are known to influence
microbiological water quality in Taskinas Creek. f) Sweet Hall Marsh (37( 34
16.94N, 76( 5302.78W) Sweet Hall Marsh is the most
extensive, downriver tidal freshwater marsh located in the Pamunkey River, one of two major
tributaries of the York River. The marsh is located approximately 77 km upriver from the mouth
of the York River estuary. This reserve area is 353 ha (871 acres) in area and includes 331 ha
(818 acres) of emergent fresh-water marsh, 14 ha (35 acres) of permanently flooded broad-leaved
forested wetlands and approximately 4 ha (9 acres) of scrub-shrub. The marsh community is
classified as freshwater mixed. Mean tidal range at Sweet Hall Marsh is on the order of 0.9 m.
Salinities are usually less than 1 ppt but can increase dramatically during periods of low
rainfall and river flow. 
Geographic Coverage
(Click for Interactive Map)
Spatial coordinates
| |
N: 37.58
|
|
S: 37.21
|
|
E: -76.37
|
|
W: -76.91
|
Data Set Citation
Dataset Originator/Creator:
Kenneth A. Moore, Carol Pollard, Joy Austin, William G. Reay
Dataset Title:
Chesapeake Bay National Estuarine Research Reserve in Virginia (CBV) NERR
Nutrient Metadata (January-December, 2002) Date last revised: October 1, 2004
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:
2002-01-01
Stop Date:
2002-12-31
Quality
ATTRIBUTE ACCURACY REPORT: Limits of Detection Parameter Variable Method Detection Limit
Dates in use Ammonium NH4F 0.0015 mg/L as N 2002 Nitrate + Nitrite NO23F 0.0008 mg/L as N 2002
Nitrite NO2F 0.0002 mg/L as N 2002 Total Dissolved Nitrogen TDN 0.0340 mg/L as N 2002
Orthophosphate PO4F 0.0006 mg/L as P 2002 Total Dissolved ... Phosphorus TDP 0.0020 mg/L as P 2002
Chlorophyll a CHLA_N 0.5 ug/L 2002 Pheophytin PHEA 0.5 ug/L 2002 Reporting of Missing Data and
Data with Concentrations Lower than Method Detection Limits Nutrient and plant pigment 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 II, Part 12) of this document.
Concentrations below a specified MDL are denoted by a 9999 and comment coded with a
Bin 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 Bplaced in the NO23F comment code column. Calculated parameters are
comment coded with a Cand 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. Nutrient and Plant Pigment 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 P Significant precipitation (Reserve defined, see metadata for further details)
U Lab analysis from unpreserved sample S Data suspect, see metadata for further details QA/QC
Programs a) Precision i) Field Variability. CBNERRVA collects two successive grab samples for
the monthly grab sample program. ii) Laboratory Variability. The VIMS Analytical Service Center
for Nutrients analyzes a laboratory duplicate once for every ten samples. iii)
Inter-organizational splits. None b) Accuracy i) Sample Spikes. The VIMS Analytical Service
Center for Nutrients analyzes a matrix spike once for every ten samples. ii) Standard Reference
Material Analysis. None iii) Cross Calibration Exercises. None LOGICAL CONSISTENCY REPORT:
NACOMPLETENESS REPORT: Data collection period a) Monthly Grab Sample Program (Monitoring Program
1) Station Code Start Date Start Time cbvginut 1/16/2002 16:40 cbvginut 2/12/2002 15:45 cbvginut
3/25/2002 12:41 cbvginut 4/18/2002 6:35 cbvginut 5/21/2002 10:53 cbvginut 6/19/2002 10:05
cbvginut 7/18/2002 10:29 cbvginut 8/20/2002 13:55 cbvginut 9/19/2002 13:00 cbvginut 10/15/2002
10:25 cbvginut 11/15/2002 10:55 cbvginut 12/16/2002 11:55 Station Code Start Date Start Time
cbvybnut 1/16/2002 17:00 cbvybnut 2/12/2002 16:45 cbvybnut 3/25/2002 13:07 cbvybnut 4/18/2002
7:07 cbvybnut 5/21/2002 11:25 cbvybnut 6/19/2002 10:40 cbvybnut 7/18/2002 10:55 cbvybnut
8/20/2002 14:30 cbvybnut 9/19/2002 13:45 cbvybnut 10/15/2002 11:10 cbvybnut 11/15/2002 11:37
cbvybnut 12/16/2002 12:31 Station Code Start Date Start Time cbvcinut 1/16/2002 17:10 cbvcinut
2/12/2002 17:00 cbvcinut 3/25/2002 13:18 cbvcinut 4/18/2002 7:20 cbvcinut 5/21/2002 11:25
cbvcinut 6/19/2002 10:52 cbvcinut 7/18/2002 11:06 cbvcinut 8/20/2002 14:41 cbvcinut 9/19/2002
14:10 cbvcinut 10/15/2002 11:30 cbvcinut 11/15/2002 12:10 cbvcinut 12/16/2002 12:45 Station Code
Start Date Start Time cbvcbnut 1/16/2002 17:20 cbvcbnut 2/12/2002 17:25 cbvcbnut 3/25/2002 13:43
cbvcbnut 4/18/2002 7:45 cbvcbnut 5/21/2002 11:57 cbvcbnut 6/19/2002 11:16 cbvcbnut 7/18/2002
11:26 cbvcbnut 8/20/2002 15:10 cbvcbnut 9/19/2002 14:35 cbvcbnut 10/15/2002 11:20 cbvcbnut
11/15/2002 12:35 cbvcbnut 12/16/2002 13:15 Station Code Start Date Start Time cbvtcnut 1/16/2002
18:10 cbvtcnut 2/12/2002 17:16 cbvtcnut 3/25/2002 14:15 cbvtcnut 4/18/2002 8:20 cbvtcnut
5/21/2002 12:15 cbvtcnut 6/19/2002 11:57 cbvtcnut 7/18/2002 10:50 cbvtcnut 8/20/2002 15:00
cbvtcnut 9/19/2002 15:30 cbvtcnut 10/15/2002 12:45 cbvtcnut 11/15/2002 14:00 cbvtcnut 12/16/2002
14:44 Station Code Start Date Start Time cbvshnut 1/16/2002 20:01 cbvshnut 2/12/2002 18:45
cbvshnut 3/25/2002 16:20 cbvshnut 4/18/2002 10:00 cbvshnut 5/21/2002 14:20 cbvshnut 6/19/2002
13:35 cbvshnut 7/18/2002 13:30 cbvshnut 8/20/2002 17:00 cbvshnut 9/19/2002 16:38 cbvshnut
10/15/2002 14:45 cbvshnut 11/15/2002 16:00 cbvshnut 12/16/2002 16:50 b) Diel Sample Program
(Monitoring Program 2) Station Code Start Date Start Time End Date End Time cbvtcnut 1/28/2002
14:00 1/29/2002 15:00 cbvtcnut 2/14/2002 6:00 2/15/2002 7:00 cbvtcnut 3/24/2002 13:00 3/25/2002
14:00 cbvtcnut 4/17/2002 6:00 4/18/2002 6:30 cbvtcnut 5/21/2002 13:00 5/22/2002 14:00 cbvtcnut
6/19/2002 12:00 6/20/2002 13:00 cbvtcnut 7/17/2002 10:15 7/18/2002 10:30 cbvtcnut 8/19/2002
14:00 8/20/2002 15:00 cbvtcnut 9/19/2002 15:30 9/20/2002 16:30 cbvtcnut 10/14/2002 11:15
10/15/2002 13:15 cbvtcnut 11/14/2002 13:00 11/15/2002 14:00 cbvtcnut 12/16/2002 14:40 12/17/2002
15:40 Note: Time is coded based on a 2400 hour clock and is referenced to Eastern Standard Time
(EST). LINEAGE/PROCESS STEP: PROCESS DESCRIPTION: Additional Description: Entry verification
Monthly nutrient and plant pigment data files, in Excel format, were sent to CBNERRVA by the
VIMS Analytical Service Center for Nutrients. Files consist of sampling station ID, date and
time and parameter values expressed in unit concentrations. Joy Austin, Laboratory Supervisor,
verified all parameter values in the Excel file through cross comparison with laboratory data
sheets. Missing data are verified through inspection of field logs, inserted into the data files
and denoted by a by CBNERRVA staff. Values below the method detection
limit (MDL) were denoted by -9999 and marked with a Bas were any affected
calculated values. In order to identify any obvious discrepancies in field sample replicates,
replicates were plotted against each other and visually inspected. 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
LIABILITY: Distribution 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
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
Phone:
804-684-7119
Email:
wreay at vims.edu
Contact Address:
Virginia Institute of Marine Science, College of William and Mary
P.O. Box 1346
City:
Gloucester Point
Province or State:
Virginia
Postal Code:
23062
Country:
USA
Creation and Review Dates
DIF Creation Date:
2006-02-23
Last DIF Revision Date:
2009-06-02
|
[
Update this Record
]
|
Updating this record requires registration.
|
|
