Bight'98 Infaunal Abundance Data

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
Southern California Coastal Water Reseach Project (SCCWRP)
Publication_Date: 20021221
Title: Bight'98 Infaunal Abundance 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:
Benthic macrofauna are often used as indicators of the condition of marine and estuarine environments. They are well suited for use as indicators because they respond to many different types of environmental stress since they include a diverse mixture of organisms with a wide range of physiological tolerances. Their responses also integrate environmental conditions over time because they have limited mobility and cannot avoid adverse conditions. Most benthic macrofaunal monitoring in the Southern California Bight (SCB) is conducted to evaluate the effect of discharges from individual sources, such as municipal wastewater outfalls, thermal and industrial outfalls, disposal of dredged material and drilling mud, and storm water runoff. The University of Southern California conducted regional studies between 1956 and 1959 but didn't use these data for environmental assessment. The Southern California Coastal Water Research Project (SCCWRP) also conducted regional surveys in 1977, 1985 and 1990 but their objective was describing reference conditions rather than assessing the condition of the benthic environment. The spatial limitations of existing programs and the differences in methodology among them are impediments to regional assessments of benthic condition throughout the SCB; they also impede comparisons of local patterns and local trends to regional patterns and trends. Regional assessments provide an opportunity to evaluate cumulative effects, particularly effects of episodic and non-point sources that cannot be assessed using local data alone. Regional assessments also provide information that enables managers to make decisions with a broader perspective by comparing the relative importance of different types of pollutant sources and chemicals for the SCB as a whole. Recognizing the value of regional assessment, twelve agencies joined in a cooperative sampling effort to assess the ecological health of southern California's mainland shelf in the summer of 1994. The study, known as the Southern California Bight Pilot Project (SCBPP), yielded several benefits. It enabled scientists and managers to map the extent and assess relative degrees of perturbation at different locations. It also led to standardization of sampling methods when regional monitoring methods were adopted for facility-specific monitoring. Standardization extended beyond data collection to include data management as regional monitoring data were shared among participants. The SCBPP also provided an opportunity for regulators and dischargers to work together to develop assessment tools for the interpretation of benthic data on regional and local scales. Based on the success of the 1994 survey, a second cooperative regional survey known as Bight'98 was conducted by 62 organizations in 1998. Bight'98 expanded the spatial scope of the SCBPP in three ways; sampling extended inshore to assess the condition of bays, harbors, and ports, and coastal sampling extended southward to include Mexican waters as far south as Ensenada and westward to include Channel Islands.
Purpose:
The objectives were to estimate the extent and magnitude of altered benthic macrofaunal communities in the SCB and compare biointegrity and biotic responses among selected geographic regions.
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: 19980713
Ending_Date: 19980928
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: Infauna
Theme_Keyword: Echinoderm
Theme_Keyword: Nematode
Theme_Keyword: Mollusc
Theme_Keyword: Arthropod
Theme_Keyword: Annelid
Theme_Keyword: benthos
Theme_Keyword: benthic sampling
Theme_Keyword: benthic invertebrates
Theme_Keyword: benthic macrofauna
Theme_Keyword: Southern California Bight
Theme_Keyword: southern California
Access_Constraints: None
Use_Constraints: Dataset credit required
Point_of_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
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:
the following stations were not collected: StationID SampleType AgencyCode Comments 2203 Grab LA THREE ATTEMPTS TO RELOCATE TO SOFT BOTTOM WITHIN 10% OF STA DEPTH (13m) FAILED. 2192 Grab HY Nominal depth 48 m 2313 Grab HY Unsampleable, station abandoned 2564 Grab MX >200 m 2571 Grab MX 2600 Grab MX 4 trials 2612 Grab MX >200 m 2605 Grab MX Rocky bottom 2581 Grab MX Rocky bottom 2626 Grab MX 2635 Grab MX Rocky bottom 2646 Grab MX 4 attempts 2573 Grab MX Sand, washed 2165 Grab OC 2166 Grab OC 2139 Grab OC 2140 Grab OC 2327 Grab OC 2084 Grab WI 2069 Grab WI 2080 Grab WI 2234 GRAB SD abandoned <3 m. 2236 GRAB SD abandoned <3 m. 2237 GRAB SD abandoned <3 m. Wind dir inadvertently not recorded. 2246 GRAB SD Station abandoned. <3 m. 2248 GRAB SD Station abandoned. <3 m. 2250 GRAB SD Station abandoned. <3 m. 2261 GRAB SD Station abandoned - obstructions. 2316 GRAB SD Station abandoned. Kelp bed. 2334 GRAB SD 2336 GRAB SD 2337 GRAB SD Station abandoned. <6 m depth at station. 2416 GRAB SD Station abandoned <5 cm penetration 2437 GRAB SD Station abandoned - obstructions. 2409 Grab ME 2640 Grab MX no chem/yes benthos 2566 Grab MX 2562 Grab MX 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
Lineage:
Methodology:
Methodology_Type: Design
Methodology_Description:
Benthic samples were collected at 415 sites in the Southern California Bight between Point Conception and Ensenada, Mexico. The sites were selected using three complementary designs: 323 sites in United States waters from 5-100m deep were allocated using a random tessellation stratified (RTS) design; 14 strata were defined based on habitat and potential sources, 20 sites in United States waters were selected to collocate samples with previous or existing programs, and 72 sites in Mexican waters from 10-200m deep were also allocated using an RTS design; three strata were defined based on latitude. Sites allocated at random using the RTS designs were used to estimate the condition of the Southern California Bight or its components. RTS designs are similar to stratified random designs but samples are distributed more evenly across strata by sub-dividing them into hexagons and collecting a sample at a random location in each hexagon. Imposition of the hexagonal pattern minimizes clustering of the random samples. Non-random sites were sampled primarily for historical comparisons. Most of these sites were sampled for SCCWRP reference surveys during the 1970's and 1980's. Sampling was repeated to measure temporal change.
Methodology_Type: Field
Methodology_Description:
In July and August of 1998, sediment samples for benthic macrofauna analysis were collected with a 0.1 m2 Van Veen grab and sieved through a 1 mm mesh screen. Only samples with penetration depth of at least 5 cm and no evidence of disturbance (e.g., washout) or slumping were processed. Material retained on the screen was placed in a relaxant solution of 1 kg MgSO4 or 30 ml propylene phenoxytol per 20 L of seawater for at least 30 minutes and preserved in 10% sodium borate buffered formalin. Sediment samples were also collected for sediment chemistry and sediment toxicity analysis; the results of these analyses are provided and discussed elsewhere.
Methodology_Type: Lab
Methodology_Description:
Samples collected for macrofaunal analysis were distributed to five laboratories for sorting, biomass determination, identification and enumeration. Samples were rinsed and transferred from formalin to 70% ethanol 3-14 days after sample collection. Organisms in the samples were sorted into six taxonomic categories (annelids, arthropods, molluscs, ophiuroids, other echinoderms and other phyla) and the wet weight of each group was measured to provide an estimate of biomass. One of two methods was used to remove excess preservative prior to weighing the sample; the organisms were either drained on a fine sieve and air dried for five minutes on absorbent paper, or poured onto a fenestrated plate in a funnel and gentle vacuum applied until no liquid was visible in the stem of the funnel. Balances capable of reading to 0.01-gram were used to weigh the samples and weights were reported to the nearest 0.1-gram. Specimens were then identified to the lowest practicable taxon, most often species, and enumerated.
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: BenthicInfaunalAbundance
Entity_Type_Definition: Table
Entity_Type_Definition_Source: Bight'98 Information Mangement Plan
Attribute:
Attribute_Label: Comments
Attribute_Definition: Any additional comments
Attribute_Definition_Source: Bight'98 Information Mangement Plan
Attribute_Domain_Values:
Unrepresentable_Domain: Additional Comments
Entity_Type:
Entity_Type_Label: BenthicInfaunalAbundance
Entity_Type_Definition: Table
Entity_Type_Definition_Source: Bight'98 Information Mangement Plan
Attribute:
Attribute_Label: LabCode
Attribute_Definition: A four letter code for the processing laboratory
Attribute_Definition_Source: Bight'98 Information Mangement Plan
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Agency Codes
Enumerated_Domain_Value_Definition: A list of agency codes
Enumerated_Domain_Value_Definition_Source: Bight'98 Information Mangement Plan
Attribute:
Attribute_Label: AB
Attribute_Definition: Aquatic Bioassay and Consulting (ABCL)*
Attribute_Definition_Source: Bight'98 Information Management Plan
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Agency Code
Enumerated_Domain_Value_Definition:
look up list 1 Agency Codes
Enumerated_Domain_Value_Definition_Source: Bight'98 Information Management Plan
Attribute:
Attribute_Label: DC
Attribute_Definition: San Diego Regional Water Quality Control Board (SDRWQCB)*
Attribute_Definition_Source: Bight'98 Information Management Plan
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Agency Code
Enumerated_Domain_Value_Definition:
look up list 1 Agency Codes
Enumerated_Domain_Value_Definition_Source: Bight'98 Information Management Plan
Attribute:
Attribute_Label: HY
Attribute_Definition: Division (CLAEMD)*
Attribute_Definition_Source: Bight'98 Information Management Plan
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Agency Code
Enumerated_Domain_Value_Definition:
look up list 1 Agency Codes
Enumerated_Domain_Value_Definition_Source: Bight'98 Information Management Plan
Attribute:
Attribute_Label: JL
Attribute_Definition: John Ljubankov
Attribute_Definition_Source: Bight'98 Information Management Plan
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Agency Code
Enumerated_Domain_Value_Definition:
look up list 1 Agency Codes
Enumerated_Domain_Value_Definition_Source: Bight'98 Information Management Plan
Attribute:
Attribute_Label: LA
Attribute_Definition: Los Angeles County Sanitation Districts (LACSD)*
Attribute_Definition_Source: Bight'98 Information Management Plan
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Agency Code
Enumerated_Domain_Value_Definition:
look up list 1 Agency Codes
Enumerated_Domain_Value_Definition_Source: Bight'98 Information Management Plan
Attribute:
Attribute_Label: ME
Attribute_Definition: MEC Analytical Systems Inc.
Attribute_Definition_Source: Bight'98 Information Management Plan
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Agency Code
Enumerated_Domain_Value_Definition:
look up list 1 Agency Codes
Enumerated_Domain_Value_Definition_Source: Bight'98 Information Management Plan
Attribute:
Attribute_Label: SD
Attribute_Definition: City of San Diego Metropolitan Waste Water
Attribute_Definition_Source: Bight'98 Information Management Plan
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Agency Code
Enumerated_Domain_Value_Definition:
look up list 1 Agency Codes
Enumerated_Domain_Value_Definition_Source: Bight'98 Information Management Plan
Attribute:
Attribute_Label: UA
Attribute_Definition: University Autonomous de Baja California*
Attribute_Definition_Source: Bight'98 Information Management Plan
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Agency Code
Enumerated_Domain_Value_Definition:
look up list 1 Agency Codes
Enumerated_Domain_Value_Definition_Source: Bight'98 Information Management Plan
Entity_Type:
Entity_Type_Label: BenthicInfaunalAbundance
Entity_Type_Definition: Table
Entity_Type_Definition_Source: Bight'98 Information Mangement Plan
Attribute:
Attribute_Label: Exclude
Attribute_Definition: A flag to exclude this specimen from the analysis
Attribute_Definition_Source: Bight'98 Information Mangement Plan
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: Yes
Range_Domain_Maximum: No
Entity_Type:
Entity_Type_Label: BenthicInfaunalAbundance
Entity_Type_Definition: Table
Entity_Type_Definition_Source: Bight'98 Information Mangement Plan
Attribute:
Attribute_Label: Abundance
Attribute_Definition:
The number of animals in the sample of a particular species
Attribute_Definition_Source: Bight'98 Information Mangement Plan
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 3718
Attribute_Domain_Values:
Unrepresentable_Domain: the numerical abundance
Entity_Type:
Entity_Type_Label: BenthicInfaunalAbundance
Entity_Type_Definition: Table
Entity_Type_Definition_Source: Bight'98 Information Mangement Plan
Attribute:
Attribute_Label: Species
Attribute_Definition: The genus and species
Attribute_Definition_Source: Bight'98 Information Mangement Plan
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: SCAMIT Species list
Codeset_Source:
Southern California Association of Marine Invertebrate Taxonomists
Entity_Type:
Entity_Type_Label: BenthicInfaunalAbundance
Entity_Type_Definition: Table
Entity_Type_Definition_Source: Bight'98 Information Mangement Plan
Attribute:
Attribute_Label: StationID
Attribute_Definition: A geographic station label
Attribute_Definition_Source: Bight'98 Information Mangement Plan
Attribute_Domain_Values:
Unrepresentable_Domain: The list of stations

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 Infauna Abundance 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 Mon Feb 3 09:45:21 2003