Elkhorn Slough (ELK) NERR Water Quality Metadata January - December 2000 Last updated: July 26, 2001Entry ID: CDMO_elkwq01-12.00m
Abstract: 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.
Purpose: Research objectives Measurements are taken every 30 minutes over a three to four week period at three sites in Elkhorn Slough. One site South Marsh (SM) is in a relatively unimpacted side channel of the slough and the second, Azevedo Pond (AP), is in a pond that receives fertilizer and pesticide runoff from an adjoining strawberry field. The third site, North Marsh (NM), was added in April 1999 ... and is located in an area where there is both agricultural and non-agricultural runoff. The purpose of this research is to identify the base parameters for Elkhorn Slough by using South Marsh as the control site and the other two sites are impacted sites and monitored for possible future problems.
Associated researchers and projects The following are brief descriptions of research projects in Elkhorn Slough as of June 1999. Elkhorn Slough National Estuarine Research Reserve and the Elkhorn Slough Foundation have had an ongoing program to monitor estuarine water quality in the central Monterey Bay region since 1988. Currently, 24 stations are monitored monthly for temperature, salinity, dissolved oxygen, pH, turbidity, nitrate, ammonium, and dissolved inorganic phosphate concentrations. Two of these stations on the Reserve are about 400 m from the SM site. Data collection began at these two stations in September 1989. A monthly monitoring station is also located at Azevedo Pond within 10 m of the YSI deployment. Monthly data from the Azevedo Pond are available from March 1992. The University of California Santa Cruz Agroecology Program has an ongoing project to examine the effects of agricultural production on an adjacent wetland. Matthew Werner, Marc Los Huertos, Felecia Rein, Sean Swezey, Mark Silberstein, Andrew De Vogelaere, Ron Tjeerdema have been the principal investigators. The following is a list of student/research projects conducted in 1999: Bane (Stout), Shannon; determine rates of erosion and whether they are related to invasive isopod densities; graduate student, SJSU. Chapin, Thomas; Jannasch, Hans; develop in-situ continuous nutrient monitoring system; Postdoc & PI, MBARI. Connors, Sarah; dynamics of shorebird habitat use as related to tidal flux; graduate student, MLML. Flores, Karen & Miller, Susan; monitor distribution and abundance of native and invasive crabs; undergraduates, CSUMB. Gilbane, Lisa; assess Ulva vs. Enteromorpha as invertebrate substrates; graduate student, MLML. Kao, Jon; diet, daily ration, and gastric evacuation in leopard sharks; graduate student, MLML. Kerr, Lisa; seasonal patterns of reproductive endocrinology of leopard sharks; graduate student, MLML. Kvitky, Alona; Karas, Brian; distinguish gender differences in round ray diet and dentition; undergraduates, UCSC. Lyon, Bruce; census caspian tern colony; professor, UCSC. Newberry, Todd; monitor tidal, season, annual patterns in shorebird abundance; emeritus professor, UCSC. Potts, Don; Siciliano, Daria; Jupiter, Stacy; remote-sensing of vegetation and habitats with hyperspectral aerial imagery; professor & graduate students, UCSC. Reis, Dawn Kathleen; demography of red-legged frog populations ; researcher. Van Sommeran, Sean; Jakl, William; monitor species diversity, abundance, and sex of elasmobranchs; pelagic shark research foundation. Zimmerman, Richard; Palacios, Sherry, Zostera distribution and abundance and relation to CO2; researcher and graduate student, MLML. Other remarks/notes Any time a reference is made to turbidity data being negative and/or zero, it was recorded as a negative in the raw data file and a zero in the edited data file due to the formatting of Excel. The technician edited none of these data points by hand nor did he/she delete any of them.
SPATIAL DATA ORGANIZATION INFORMATION:
Indirect Spatial Reference: Site location and character Elkhorn Slough is located on the West Coast of the United States in Central California. It connects with the Pacific Ocean in central Monterey Bay near Moss Landing, California. There are three sampling sites. SM (South Marsh) (36( 49' 04.72" N, 121 44' 21.95" W) is in a side channel of the slough and is relatively unimpacted by anthropogenic influences. The YSI is located on the side of a bank in one of the secondary slough channels. AP (Azevedo Pond) (36( 50' 44.41" N, 121( 45' 13.50" W) is in a pond, which receives fertilizer and pesticide runoff from a strawberry field in year-round production. The YSI is located about 10m from a culvert connecting the pond to the slough. NM (North Marsh) (36( 50' 04.68"N, 121( 44' 18.19"W) is located in between South Marsh and Azevedo Pond. This site is impacted by both agricultural and urban runoff. Azevedo Pond ranged in temperature between 3.5 C and 35 C in the summer and averaged 16 C. Salinity ranged from 1 ppt during rain events to 60 ppt during summer evaporation and averaged 47 ppt. DO% ranged from 0% to 302% and averaged 84%. The tidal range is approximately 1 m, and the depth is approximately 1.5m. PH ranged from 6.9 to 9.8 with an average of 7.9. Turbidity ranged from 0 to 676 NTU with an average of 13. The bottom habitat is fine sediments covered in ulva and other benthic algae. Freshwater input is heavy during the winter and is from the neighboring agricultural field. South Marsh ranged in temperature between 9.8 C and 23.7 C in the summer and averaged 15.8 C. Salinity ranged from 1 ppt during rain events to 35 ppt during summer evaporation and averaged 30 ppt. DO% ranged from 2% to 184% and averaged 86%. The tidal range is approximately 3 m and the depth is 3.5 m. PH ranged from 7.2 to 8.6 with an average of 7.9. Turbidity ranged from 0 to 134 NTU with an average of 12 NTU. The bottom habitat is slightly larger grain sediments because of the higher current area. Freshwater inputs are from surrounding upland area and only occur during the winter. North Marsh ranged in temperature between 8.5 C and 29.4 C in the summer and averaged 17.6 C. Salinity ranged from 12 ppt during rain events to 45 ppt during summer evaporation and averaged 33 ppt. DO% ranged from 0% to 363% and averaged 81%. The tidal range is approximately 1 m and depth is approximately 1.5m. PH ranged from 6.2 to 9.4 with an average of 8.0. Turbidity ranged from 0 to 161 NTU with an average of 11 NTU. The bottom habitat is fine sediments covered in ulva and other benthic algae. Two small creeks run into this marsh and only run in the winter.
Data Set Citation
Dataset Originator/Creator: Kerstin Wasson, John C. Haskins
Dataset Title: Elkhorn Slough (ELK) NERR Water Quality Metadata January - December 2000 Last updated: July 26, 2001
Dataset Release Date: 2006-02-09
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: 2000-01-01Stop Date: 2000-12-31
TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER PROCESSES/MEASUREMENTS > WATER DEPTH
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > CONDUCTIVITY
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > DISSOLVED GASES > DISSOLVED OXYGEN
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > PH
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > TURBIDITY
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > WATER TEMPERATURE
OCEANS > SALINITY/DENSITY > SALINITY
BIOSPHERE > ECOSYSTEMS > TERRESTRIAL ECOSYSTEMS > WETLANDS > ESTUARINE WETLANDS
BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > WETLANDS > ESTUARINE WETLANDS
Quality See http://cdmo.baruch.sc.edu/data/qaqc.cfm
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
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.
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
1700 Elkhorn Road
Province or State: CA
Postal Code: 95076
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2006-02-09
Last DIF Revision Date: 2017-08-23