Data Set Citation:
When using this data, please cite the data package:
NCEAS 12192: Fleishman: Ecosystem analysis of pelagic organism declines in the Upper San Francisco Estuary , National Center for Ecological Analysis and Synthesis , and Gehrts K. 2008.
POD! Environmental Monitoring Program (IEP) benthic macroinvertebrate data
nceas.897.21 (https://knb.ecoinformatics.org:443/knb/metacat/nceas.897.21/nceas)
General Information:
Title:POD! Environmental Monitoring Program (IEP) benthic macroinvertebrate data
Identifier:nceas.897
Abstract:
These files have count data for benthic macroinvertebrates collected in each sample for the three longest running stations of IEP's Ecological Monitoring Program. Convert to density (org/m2): multiply by 19 (size of ponar is .053m2 and mesh size is .595mm).
Publication Date:2008-04-01
Data Table, Image, and Other Data Details:
Metadata download: Ecological Metadata Language (EML) File
Data Table:D4-L 1975 to present.csv ( View Metadata | Download File download)
Data Table:D28A-L 1977 to present.csv ( View Metadata | Download File download)
Data Table:D7-C 1977 to present.csv ( View Metadata | Download File download)

Involved Parties

Data Set Creators:
Organization:NCEAS 12192: Fleishman: Ecosystem analysis of pelagic organism declines in the Upper San Francisco Estuary
Organization:National Center for Ecological Analysis and Synthesis
Individual: Karen Gehrts
Organization:California Department of Water Resources (DWR)
Email Address:
kagehrts@water.ca.gov
Data Set Contacts:
Individual: Karen Gehrts
Organization:California Department of Water Resources (DWR)
Email Address:
kagehrts@water.ca.gov
Associated Parties:
Individual: Karen Gehrts
Metadata Providers:
Individual: Marissa Bauer

Data Set Characteristics

Geographic Region:
Geographic Description:Sacramento-San Joaquin Delta and Suisun Bay, California, USA
Bounding Coordinates:
West:  -121.7997  degrees
East:  -121.7997  degrees
North:  38.0331  degrees
South:  38.0331  degrees
Time Period:
Begin:
1975
End:
2007

Sampling, Processing and Quality Control Methods

Step by Step Procedures
Step 1:  
Description:

All samples are collected using a hydraulic winch and Ponar dredge. The Ponar dredge samples a bottom area of about 0.053 m2 to a depth that varies with the type of sediment and the ability of the dredge to penetrate it. Under the current program four replicate sample grabs are collected at each sampling site. The contents of the dredge are brought to the surface and placed in a large plastic bucket. Water is then added to the sample to create a slurry. The contents of each grab sample bucket are washed over Standard No. 30 stainless steel mesh screen (0.595 mm openings). Each sample is carefully washed with a fine spray to remove as much of the substrate as possible. All material remaining on the screen after washing is preserved in a solution of approximately 20%26#37; buffered formalin containing Rose Bengal dye for laboratory analysis. The benthic macroinvertebrate sampling methodology used in this program is described in Standard Methods for the Examination of Water And Wastewater, 20th ed. 1998 American Public Health Association, Washington D.C. (See pages 10-60 through 10-74.)

Data Set Usage Rights

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Access Control:
Auth System:knb
Order:denyFirst
Metadata download: Ecological Metadata Language (EML) File