1985 Reference Study Trawl Invertebrate Abundance

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

Southern California Coastal Water Research Project (SCCWRP)

Publication_Date: 20040415

Publication_Time: 20000415

Title: 1985 Reference Study Trawl Invertebrate Abundance

Edition: 1.0

Publication_Information:

Publication_Place: Costa Mesa, California

Publisher:

Southern California Coastal Water Research Project (SCCWRP)

Online_Linkage:

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Description:

Abstract:

Changes in the marine coastal environment caused by wastewater discharge are evaluated best by comparisons to normal or reference conditions and natural fluctuations. These differences may be factored into assessments of discharge related changes (e.g. Bernstein and Zalinski, 1983). Additionally, far field dispersion and accumulation of contaminants in the southern California coastal region should be measured periodically to appraise general environmental quality. SCCWRP provided control or reference data in 1977 when the 60-Meter Control Survey, with station from Pt. Conception to San Diego, was conducted by Word and Mearns (1979). Information from that survey has been widely used in evaluating effects of discharges into the region, (e.g., Tetra-Tech, 1980, Smith and Bernstein, 1985; Swartz et al., 1986).

Purpose:

The purpose of the Reference Site Survey is to update the 60-M Survey by resampling some of the 60 m sites and to provide reference values for additional parameters and depths not sampled in that earlier survey. This report lists and summarizes the data from the Reference Site Survey and evaluates changes in some of these parameters since the 60-M Survey in 1977.

Supplemental_Information:

Thirteen of the 60-M Survey sites were selected for this study. Sites were selected based on the designation of "control" sites by Word and Mearns (1-79) and on separate analysis of the infauna of the 60-M Survey data (Smith and Bernstein, 1985). In addition to the 60m sites, sites at 30 and 150 m were sampled creating cross-shelf transects in each area (Fig.1). A total of 38 sites were sampled; Station R6l-30 off La Jolla was abandoned since it was located in a kelp bed. Sampling was conducted Aug.-Oct., 1985 using 4 different ships (station location, sampling dates, and ships used are listed : Marine Surveyor, Seawatch, Westwind, and Monitor III.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19850801

Ending_Date: 19850831

Currentness_Reference: ground condition

Status:

Progress: COMPLETE

Maintenance_and_Update_Frequency: None Planned

Spatial_Domain:

Description_of_Geographic_Extent: Southern California Bight

Bounding_Coordinates:

West_Bounding_Coordinate: -120.175

East_Bounding_Coordinate: -117.1902

North_Bounding_Coordinate: 34.46187

South_Bounding_Coordinate: 32.54203

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: Southern California Bight

Access_Constraints: None

Use_Constraints: None

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Information Systems Manager

Contact_Address:

Address_Type: physical address

Address: 3535 Harbor Blvd., Suite 110

City: Costa Mesa

State_or_Province: California

Postal_Code: 92626

Country: USA

Contact_Voice_Telephone: 714.755.3200

Contact_Facsimile_Telephone: 714.438.1016

Contact_Electronic_Mail_Address: im_contact@sccwrp.org

Hours_of_Service: 8:00 a.m. to 4:00 p.m. Monday Through Friday

Contact_Instructions: email preferred

Data_Set_Credit: SCCWRP

Native_Data_Set_Environment: Microsoft Access Version 2000