Bight'98 Invertebrate Biomass Data

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
Southern California Coastal Water Reseach Project (SCCWRP)
Publication_Date: 20030203
Title: Bight'98 Invertebrate Biomass Data
Edition: Version 1
Publication_Information:
Publication_Place: Costa Mesa, CA
Publisher: SCCWRP
Online_Linkage:
View a Map of this Data [html]
Download this Data as an Excel Friendly File [csv]
Download this Data with Associated Data Files [zip]
Description:
Abstract:
The Southern California Bight, an open embayment in the coast between Point Conception and Cape Colnett (south of Ensenada), Baja California, is an important and unique ecological resource. The SCB is a transitional area that is influenced by currents from cold, temperate ocean waters from the north and warm, tropical waters from the south. In addition, the SCB has a complex topography, with offshore islands, submarine canyons, ridges and basins, that provides a variety of habitats. The mixing of currents and the diverse habitats in the SCB allow for the coexistence of a broad spectrum of species, including more than 500 species of fish and 1,500 species of invertebrates. The SCB is a major migration route, with marine bird and mammal populations ranking among the most diverse in north temperate waters. The coastal zone of the SCB is a substantial economic resource. Los Angeles/Long Beach Harbor is the largest commercial port in the United States, and San Diego Harbor is home to one of the largest US Naval facilities in the country. More than 100 million people visit southern California beaches and coastal areas annually, bringing an estimated $9B into the economy. Recreational activities include diving, swimming, surfing, and boating, with about 40,000 pleasure boats docked in 13 coastal marinas within the region. Recreational fishing brings in more than $500M per year. The SCB is one of the most densely populated coastal regions in the country, which creates stress upon its marine environment. Nearly 20 million people inhabit coastal Southern California, a number which is expected to increase another 20% by 2010. Population growth generally results in conversion of open land into non-permeable surfaces. More than 75% of southern Californian bays and estuaries have already been dredged and filled for conversion into harbors and marinas. This "hardening of the coast" increases the rate of runoff and can impact water quality through addition of sediment, toxic chemicals, pathogens and nutrients to the ocean. Besides the impacts of land conversion, the SCB is already home to fifteen municipal wastewater treatment facilities, eight power generating stations, 10 industrial treatment facilities, and 18 oil platforms that discharge to the open coast. Each year, local, state, and federal organizations spend in excess of $10M to monitor the environmental quality of natural resources in the SCB. Most of this monitoring is associated with National Pollutant Discharge Elimination System (NPDES) permits and is intended to assess compliance of waste discharge with the California Ocean Plan and the Federal Clean Water Act, which set water quality standards for effluent and receiving waters. Some of this information has played a significant role in management decisions in the SCB. While these monitoring programs have provided important information, they were designed to evaluate impacts near individual discharges. Today, resource managers are being encouraged to develop management strategies for the entire SCB. To accomplish this task, they need regionally-based information to assess cumulative impacts of contaminant inputs and to evaluate relative risk among different types of stresses. It is difficult to use existing data to evaluate regional issues because the monitoring was designed to be site-specific and is limited to specific geographic areas. The monitoring provides substantial data for some areas, but there is little or no data for the areas in between. Beyond the spatial limitations, data from these programs are not easily merged to examine relative risk. The parameters measured often differ among programs. Even when the same parameters are measured, the methodologies used to collect the data often differ and interlaboratory quality assurance (QA) exercises to assess data comparability are rare.
Purpose:
The purpose of trawl sampling is to obtain data on the abundance, biomass, diversity, and disease prevalence of demersal fish and invertebrate assemblages. It is also used to collect fish and invertebrates for tissue contaminant analysis. This information is useful in characterizing possible anthropogenic effects on demersal fish and invertebrate populations. Mearns and Allen (1978) provides a comprehensive description of how small otter trawls should be designed and used for conducting biological surveys in coastal waters.
Supplemental_Information:
Missing numerical values have been coded as -99 Missing text values have been coded as NR Missing date values have been coded as 01/Jan/1998 Missing time values have been coded as 23:00
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19980709
Ending_Date: 19981015
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: -120.49462
East_Bounding_Coordinate: -116.6375
North_Bounding_Coordinate: 34.459
South_Bounding_Coordinate: 31.7511
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Invertebrates
Theme_Keyword: Biomass
Access_Constraints: None
Use_Constraints: Dataset credit required
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jim Allen
Contact_Address:
Address_Type: mailing 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: jima@sccwrp.org
Hours_of_Service: 8:00 a.m. to 4:00 p.m. Monday Through Friday
Contact_Instructions: E-mail preferred
Data_Set_Credit: SCCWRP
Native_Data_Set_Environment: Microsoft Access Version 97
Cross_Reference:
Citation_Information:
Originator:
Southern California Coastal Water Research Project (SCCWRP)
Publication_Date: 20021221
Title: Bight'98 Survey
Edition: Version 1
Publication_Information:
Publication_Place: Costa Mesa, California
Publisher: SCCWRP
Online_Linkage: http://www.sccwrp.org/data/1998_bight_survey.html

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: Coordinates accurate to within 100 ft
Logical_Consistency_Report:
The tables may be related by the StationID field or the SampleID field where applicable
Completeness_Report:
StationID SampleType AgencyCode Comments 2395 Trawl LA Hung and tore net on low relief bottom of rock and rock rubble. Site Abandoned 2390 Trawl LA Foul bottom of low relief reef and debris. Tore net & damaged doors. Abandoned 2389 Trawl LA Too little room between 120" outfall and offshore reef 2121 Trawl ME No Trawl, canyon at upper end, slope gradient too steep to stay w/in depth param 2174 Trawl ME Boat in trawl route 2199 Trawl ME Station Failure due to rocky bottom/gill nets 2213 Trawl ME drift net overpath 2309 Trawl ME Station moved .12 to achieve depth range/Station Aborted 2366 Trawl ME Original station was located between Nuevo A and Nuevo Hilhouse. New location m 2409 Trawl ME Obstructions up and down coast from station 2454 Trawl ME No trawling, pipelines on either side of station, plus rock hazards north. 2107 Trawl AB Underwater pinnacle. 2269 Trawl AB 2270 Trawl AB Net hung up. 2271 Trawl AB Net hung up. 2272 Trawl AB 2445 Trawl AB Approx. 2 tons of jellyfish in trawl. Too heavy to safely bring aboard. 2308 Trawl AB Underwater pinnacle. 2086 Trawl WI 2083 Trawl WI Can not trawl, rocky bottom Farnsworth Banks 2080 Trawl WI No trawl, too rocky, pinnacles, farnsworth Banks. 2068 Trawl WI No trawl data sheet 2081 Trawl WI station over rock piles. pinnacles. Depth from 50-10 in 5 meters, 2220 TRAWL SD Obstructions-net fouled on abandoned fishing gear. 2225 TRAWL SD Station abandoned.In marina near slip 247. 2229 TRAWL SD Station abandoned.Chart showed cables crossing site. 2234 TRAWL SD Station abandoned.Lack of room to trawl between two anchorages. 2235 TRAWL SD Obstructions metered on station and offshore,too shallow. 2236 TRAWL SD Station abandoned.Too shallow. 2238 TRAWL SD Station abandoned.Track not long enough-improper distance. 2240 TRAWL SD Station abandoned.Shoals 2245 TRAWL SD Station moved.Channels cross trawl track.Depth 3.0 - 5.0 m. 2246 TRAWL SD On shoal near Sweetwater River.Too shallow. 2247 TRAWL SD Shallow with shoals. 2248 TRAWL SD Too shallow - can't approach station. 2250 TRAWL SD Station abandoned.Too shallow-can't approach station. 2259 TRAWL SD Station moved to new coordinates,trawl track had obstructions. 2261 TRAWL SD In south bay free anchorage/bone yard"." 2315 TRAWL SD Ran course-obstructions.Moved 100 M inshore 2316 TRAWL SD Kelp bed.Wind dir inadvertently not recorded. 2336 TRAWL SD Original station was reef. Moved offshore and inshore 100 m-reef. 2337 TRAWL SD First station location was too shallow. Moved 100 m offshore-reef. 2410 TRAWL SD Station abandoned.Net hung up on rock reef. 2438 TRAWL SD Station abandoned. In Chula Vista Marina-in marine slips. 2439 TRAWL SD Station abandoned. In Sunroad Marina. 2459 TRAWL SD Rocky ridge - 9 mi. bank reef and obstructions. 2460 TRAWL SD Rocky ridge - 9 mi. bank reef and obstructions. 2462 TRAWL SD Trawl hung on reef.Tissue fish were still collected from remains in net. 2463 TRAWL SD Station abandoned. Bomb in net. Net lost. 2554 Trawl ME No trawling, pipelines on either side of station, plus rock hazards north. Missing numerical values have been coded as -99 Missing text values have been coded as NR Missing date values have been coded as 01/Jan/1998 Missing time values have been coded as 23:00
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The station locations were determined using a hand held Magellan GPS and are accurate with in a radius of 100 ft
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: The depths expressed are accurate to 0.1 meters.
Lineage:
Methodology:
Methodology_Type: Field
Methodology_Identifier:
Methodology_Keyword_Thesaurus: None
Methodology_Keyword: Trawl
Methodology_Keyword: Otter Trawl
Methodology_Description:
Demersal fish and invertebrate species identification, enumeration, individual lengths (fish only), and biomass will be determined in the field following protocols presented in the Bight'98 Field Operations Manual (1998). The quality of fish and invertebrate identification, enumeration, biomass, and length measurements will be ensured through presurvey training, audits, and intercalibration, and in-survey and postsurvey audits. The chief scientist of each organization will be responsible for reviewing standard sampling procedures with his/her field crew and conducting training as needed. The field QA/QC auditor will assess understanding of trawl processing protocol by each new organization during a presurvey evaluation. During the survey, each chief scientist will check to make sure that the scales are calibrated at the start of each day, that the appropriate identification aids and processing equipment are on board, and that processing follows the protocol described in the Bight'98 Field Operations Manual. In addition, each chief scientist will recount, reweigh, and remeasure 2 fish species (with at least 10 individuals) each day during the survey to provide data for precision estimates relative to the target measurement quality objectives (MQOs). The field QA/QC auditor will conduct at least one in-survey visit during trawl sampling per vessel during the field survey. The auditor will check to make sure that the scales are calibrated at the start of each day, that the appropriate identification aids and processing equipment are on board, and that processing follows the protocol described in the Bight'98 Field Operations Manual. He or she will also check to see that 2 fish species are recounted, reweighed, and remeasured during the visit. Completeness objectives for fish and invertebrate counts and weights, and fish lengths will be 90%. Precision objectives for counts, weights, and lengths will be 10%. The field crew must examine all demersal fish and invertebrates collected for evidence of external gross pathologies. Fish will be examined for the following anomalies: fin erosion, tumors, external parasites, color anomalies, skeletal deformities, and lesions. Invertebrates will be examined for burn spots and other anomalies. The quality of gross pathology determinations will be ensured principally through information provided prior to the survey, checks conducted in the field during the survey by the project-assigned taxonomists, and postsurvey voucher checks. Field crews will examine all fish and invertebrates and preserve any suspected of having a pathology. Organisms collected for pathological examination must be preserved according to the protocol described in the Bight'98 Field Operations Manual. Specimens will be returned to the laboratory with a sample identification label that notes the suspected pathology. Because of the potential difficulty in proper field identification of pathologies, all definitive examinations will be conducted by a qualified pathologist. This pathologist will examine the organisms and provide the project-assigned taxonomist with the results. A voucher collection of preserved specimens or photographs representing every type of pathological condition identified in the Bight'98 fish and invertebrates. Each of these examples should be verified by an external pathologist experienced with the species in question. Similarly, each organization should maintain its own reference collection of pathological fish and invertebrates. These reference collections will be used to very the diagnoses made in future years to ensure intra- and interlaboratory consistency. A reference collection will also be developed for future training purposes. To maintain a consistent level of field crew performance, the Bight'98 program has established an overall completeness and accuracy objectives of 95% (i.e., <5% unidentified pathologies or errors).
Methodology_Citation:
Citation_Information:
Originator:
Southern California Coastal Water Research Project (SCCWRP)
Publication_Date: 20000401
Title: Bight'98 Station Occupation Data
Edition: Version 1
Publication_Information:
Publication_Place: Costa Mesa, California
Publisher: SCCWRP
Online_Linkage: http://www.sccwrp.org/data/1998_bight_survey.html
Larger_Work_Citation:
Citation_Information:
Originator:
Southern California Coastal Water Research Project (SCCWRP)
Publication_Date: 20021221
Title: Bight'98 Survey
Edition: Version 1
Publication_Information:
Publication_Place: Costa Mesa, California
Publisher: SCCWRP
Online_Linkage: http://www.sccwrp.org/data/1998_bight_survey.html
Process_Step:
Process_Description:
Each field crew or laboratory that generated data entered it into their own data management system and subjected it to their internal QA/QC procedures. Recommended QA procedures included double entry of data and range checks. Data was then reformatted following the Standard Data Transfer Protocol (SDTP) and submitted to the Information Management Officer (IMO) in comma- delimited, ASCII format. Standardized data files were submitted to the IMO by diskette, e-mail, or FTP. The IMO then initiated a series of error checks to ensure the data: 1) were within specified ranges appropriate to each parameter measured, 2) contained all required fields, 3) had encoded valid values from constrained look-up lists where specified, and 4) were in the correct format (text in text fields, values in numeric fields, etc.). After all data were submitted, error checked, and corrected, the IMO certified that the file was consistent with the SDTP format requirements and complete. The IMO then notified the chairperson of the Technical Committee responsible for the data that it was ready for technical review. The IMO distributed the data to the chairperson as a comma-delimited ASCII file in the SDTP format. The Technical Committee Chair (TCC) and the Technical Committee reviewed the data with respect to scientific content. This review involved plotting of data and examining interrelationships among individual parameter responses and addressed more extensive data quality issues than can be accomplished by range checking alone. All corrections to the data were made by the IMO. Prior to making any changes, the IMO documented the changes and received (written or electronic) concurrence from the organization that originated the data. The IMO only make changes in the centralized data base; originating organizations were responsible for making corresponding changes in their own internal data storage systems. All changes to the data were documented in a computerized file available to all data users.
Process_Date: 20000403

Spatial_Data_Organization_Information:

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: .00001
Longitude_Resolution: .00001
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodedic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Trawl Invertebrate Biomass
Entity_Type_Definition: Table
Entity_Type_Definition_Source: Bight'98 Information Management Plan
Attribute:
Attribute_Label: StationID
Attribute_Definition: a geographic location label
Attribute_Definition_Source: Bight'98 Information Management Plan
Attribute_Domain_Values:
Unrepresentable_Domain: the station list
Entity_Type:
Entity_Type_Label: Trawl Invertebrate Biomass
Entity_Type_Definition: Table
Entity_Type_Definition_Source: Bight'98 Information Management Plan
Attribute:
Attribute_Label: Species
Attribute_Definition: The species of invertebrate collected at the station
Attribute_Definition_Source: Bight'98 Information Management Plan
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SCAMIT Species list
Enumerated_Domain_Value_Definition: A taxonomic list
Enumerated_Domain_Value_Definition_Source: Bight'98 Information Mangement Plan
Entity_Type:
Entity_Type_Label: Trawl Invertebrate Biomass
Entity_Type_Definition: Table
Entity_Type_Definition_Source: Bight'98 Information Management Plan
Attribute:
Attribute_Label: BiomassQual
Attribute_Definition: qualifier for the biomass
Attribute_Definition_Source: Bight'98 Information Management Plan
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: look up list 13 Qualifiers
Enumerated_Domain_Value_Definition: a list of qualifier codes
Enumerated_Domain_Value_Definition_Source: Bight'98 Information Management Plan
Attribute:
Attribute_Label: NA
Attribute_Definition: Not analyzed
Attribute_Definition_Source: Bight'98 Information Management Plan
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qualifier Codes
Enumerated_Domain_Value_Definition:
look up list 13 Qualifier Codes
Enumerated_Domain_Value_Definition_Source: Bight'98 Information Management Plan
Attribute:
Attribute_Label: <
Attribute_Definition: less than
Attribute_Definition_Source: Bight'98 Information Management Plan
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qualifier Codes
Enumerated_Domain_Value_Definition:
look up list 13 Qualifier Codes
Enumerated_Domain_Value_Definition_Source: Bight'98 Information Management Plan
Entity_Type:
Entity_Type_Label: Trawl Fish Biomass
Entity_Type_Definition: Table
Entity_Type_Definition_Source: Bight'98 Information Management Plan
Attribute:
Attribute_Label: Biomass
Attribute_Definition: the weight in kilograms
Attribute_Definition_Source: Bight'98 Information Management Plan
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -99
Range_Domain_Maximum: 147.4
Entity_Type:
Entity_Type_Label: Trawl Invertebrate Biomass
Entity_Type_Definition: Table
Entity_Type_Definition_Source: Bight'98 Information Management Plan
Attribute:
Attribute_Label: Units
Attribute_Definition: kilograms
Attribute_Definition_Source: Bight'98 Information Management Plan
Attribute_Domain_Values:
Unrepresentable_Domain: Kilograms
Entity_Type:
Entity_Type_Label: Trawl Invertebrate Biomass
Entity_Type_Definition: Table
Entity_Type_Definition_Source: Bight'98 Information Management Plan
Attribute:
Attribute_Label: Comments
Attribute_Definition: additional comments
Attribute_Definition_Source: Bight'98 Information Management Plan
Attribute_Domain_Values:
Unrepresentable_Domain: Additional supporting comments

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Information Systems Manager
Contact_Organization: SCCWRP
Contact_Position: Information Manager
Contact_Address:
Address_Type: mailing 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: E-mail preferred
Resource_Description: Bight'98 Bioaccumulation Fish Data
Distribution_Liability:
Although these data have been processed successfully on a computer system at SCCWRP, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from a SCCWRP server, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. SCCWRP shall not be held liable for improper or incorrect use of the data described and/or contained herein.

Metadata_Reference_Information:
Metadata_Date: 20021221
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Information Systems Manager
Contact_Organization:
Southern California Coastal Water Research
Project(SCCWRP)
Contact_Position: Information Manager
Contact_Address:
Address_Type: mailing 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: E-mail preferred
Metadata_Standard_Name:
NBII Content Standard for National Biological Information Infrastructure Metadata
Metadata_Standard_Version: December 1995
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Security_Information:
Metadata_Security_Classification_System: None
Metadata_Security_Classification: Unclassified
Metadata_Security_Handling_Description: None

Generated by mp on Tue Feb 11 11:04:40 2003