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Item Identification

Title: MMSREEFish_Collections
Abstract:

Impacts of the Explosive Removal of Offshore Oil and Gas Structureson Fish Stocks in the Gulf of MexicoOffshore oil and gas platforms in the Gulf of Mexico (GOM) function as artificial reefs attracting a wide variety of marine life. Explosives are frequently used to remove these structures. These data describe the first comprehensive study to quantitatively assess impacts of the explosive removal of offshore oil and gas structures on fish. Between July 1993 and May 1999 surface and underwater sampling was conducted at nine explosive oil and gas platform removals in the GOM to estimate fish mortality. Water depth ranged from 14-36 m. After explosives were detonated, field personnel operating from inflatable boats used dip nets to collect all dead fish that floated to the surface while divers manually sampled dead fish that sank to the sea floor. The most severely impacted fish species at explosive structure removals in order of abundance were Atlantic spadefish (Chaetodipterus faber), blue runner (Caranx crysos), red snapper (Lutjanus campechanus), and sheepshead (Archosargus probatocephalus). These four species accounted for 86 of estimated mortality. Numbers of all other impacted species were far below those of the top four. Mortality estimates for red snapper were incorporated into stock assessment analyses. The impact of including explosive platform removal data was that abundance estimates were almost indistinguishable from the original assessment. The differences were well within the statistical estimation variances for the original assessment.

Purpose:

Quantify the impacts of explosives used in the removal of offshore petroleum production platforms on fishes residing near these artificial reefs. Provide information for FMPs and offshore technology groups.

Physical Location

Organization: National Centers for Environmental Information - Silver Spring, Maryland
City: Silver Spring
State/Province: MD
Location Description:

NCEI Archive

Entity Information

Entity Type: Spreadsheet
Description:

Original_Data_1: MMSREEFish_Collections includes data for fish collections made after explosives were detonated at the platforms.

Data Attributes

Attribute Summary

Rubric Score Primary Key? Name Type Description
100
AREA CHARACTER Gulf of Mexico lease area used by US Dept. of Interior/BOEM/BSEE.
100
BLOCK NUMERIC Gulf of Mexico offshore structure identification designation used by US Dept. of Interior/BOEM/BSEE.
100
ID CHARACTER Platform identification name.
100
YEAR NUMERIC Year of detonation and sample collection.
100
MONTH NUMERIC Month of detonation and sample collection.
100
DAY NUMERIC Day of detonation and sample collection.
100
TIME NUMERIC Time of explosives detonation using 24 hr clock in Central Time as recorded from a watch (regardless of daylight savings time or standard time).
100
DEPTH_METERS NUMERIC Water depth of platform in meters.
100
LATITUDE NUMERIC Latitude of platform in degrees.
100
LONGITUDE NUMERIC Longitude of platform in degrees.
100
SPECIES CHARACTER Common name of fish species collected. NA = not applicable (no fish collected in sample).
100
TOTAL_LENGTH_CM CHARACTER Total length of fish in cm. NA=not applicable.
100
TAG CHARACTER Was the fish tagged? YES or NO, NA=not applicable.
100
WEIGHT_KG CHARACTER Weight of fish in kg. NA=not applicable.
100
COUNT NUMERIC If COUNT=1 then this record represents one fish. If COUNT=0 then no fish were collected in this sample.
100
DISTANCE_METERS CHARACTER Distance in meters from the platform at which the sample was collected. If distance=0 then sample was collected in footprint area under the platform.
100
COMPASS_DIRECTION CHARACTER Direction from platform where sample was collected. N=north, NE=northeast, etc.
100
SAMPLING_GEAR CHARACTER Sampling gear in which fish were collected. See Dataset_Metadata tab for futher information. RAD=Refers to a circular survey of radius 3.35 m conducted on the sea floor by divers. TRAN=Refers to a diver survey of the sea floor conducted along a transect line attached to the perimeter of the platform at the sea floor. UPLN=Refers to samples collected by divers from the sea floor in the footprint under the platform. At a given platform (BLOCK) all dead fish collected under the platform were combined into a single sample. OWLN=Refers to a sampling net placed on the seafloor prior to detonation of explosives and retrieved from the surface after the detonation. SURF1=Refers to the collection dead fish floating on the sea surface after the first detonation of explosives at the platform. SURF2=Refers to the collection dead fish floating on the sea surface after the second detonation (if one occurred) of explosives at the platform. SURF3=Refers to the collection dead fish floating on the sea surface after the third detonation (if one occurred) of explosives at the platform.
100
OWLNNET CHARACTER Unique number associated with each individual OWLN sample. See Dataset_Metadata tab for futher information.
100
OWLN_AREA_SQM CHARACTER Area in square meters for the OWLNNET associated with this record. See Dataset_Metadata tab for futher information.
100
TRAN_WIDTH_METERS CHARACTER Estimated width in meters for the TRANS sample associated with this record. See Dataset_Metadata tab for futher information.
100
RAD_AREA_SQM CHARACTER Area in square meters for the RAD sample associated with this record. See Dataset_Metadata tab for futher information.
100
UPLN_COMBINED_AREA_SQM CHARACTER Cumulative total area in square meters for all the UPLN samples collected under the platform at this BLOCK. See Dataset_Metadata tab for futher information.

Attribute Details

AREA

CC ID: 348074
Seq. Order: 1
Data Storage Type: CHARACTER
Max Length: 18
Required: No
Primary Key: No
Status: Active
Description:

Gulf of Mexico lease area used by US Dept. of Interior/BOEM/BSEE.

BLOCK

CC ID: 348075
Seq. Order: 2
Data Storage Type: NUMERIC
Max Length: 3
Required: No
Primary Key: No
Status: Active
Description:

Gulf of Mexico offshore structure identification designation used by US Dept. of Interior/BOEM/BSEE.

ID

CC ID: 348076
Seq. Order: 3
Data Storage Type: CHARACTER
Max Length: 4
Required: No
Primary Key: No
Status: Active
Description:

Platform identification name.

YEAR

CC ID: 348077
Seq. Order: 4
Data Storage Type: NUMERIC
Max Length: 4
Required: No
Primary Key: No
Status: Active
Description:

Year of detonation and sample collection.

MONTH

CC ID: 348078
Seq. Order: 5
Data Storage Type: NUMERIC
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Month of detonation and sample collection.

DAY

CC ID: 348079
Seq. Order: 6
Data Storage Type: NUMERIC
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Day of detonation and sample collection.

TIME

CC ID: 348080
Seq. Order: 7
Data Storage Type: NUMERIC
Max Length: 4
Required: No
Primary Key: No
Status: Active
Description:

Time of explosives detonation using 24 hr clock in Central Time as recorded from a watch (regardless of daylight savings time or standard time).

DEPTH_METERS

CC ID: 348081
Seq. Order: 8
Data Storage Type: NUMERIC
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Water depth of platform in meters.

LATITUDE

CC ID: 348082
Seq. Order: 9
Data Storage Type: NUMERIC
Max Length: 5
Required: No
Primary Key: No
Status: Active
Description:

Latitude of platform in degrees.

LONGITUDE

CC ID: 348083
Seq. Order: 10
Data Storage Type: NUMERIC
Max Length: 6
Required: No
Primary Key: No
Status: Active
Description:

Longitude of platform in degrees.

SPECIES

CC ID: 348084
Seq. Order: 11
Data Storage Type: CHARACTER
Max Length: 21
Required: No
Primary Key: No
Status: Active
Description:

Common name of fish species collected. NA = not applicable (no fish collected in sample).

TOTAL_LENGTH_CM

CC ID: 348085
Seq. Order: 12
Data Storage Type: CHARACTER
Max Length: 5
Required: No
Primary Key: No
Status: Active
Description:

Total length of fish in cm. NA=not applicable.

TAG

CC ID: 348086
Seq. Order: 13
Data Storage Type: CHARACTER
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Was the fish tagged? YES or NO, NA=not applicable.

WEIGHT_KG

CC ID: 348087
Seq. Order: 14
Data Storage Type: CHARACTER
Max Length: 5
Required: No
Primary Key: No
Status: Active
Description:

Weight of fish in kg. NA=not applicable.

COUNT

CC ID: 348088
Seq. Order: 15
Data Storage Type: NUMERIC
Max Length: 1
Required: No
Primary Key: No
Status: Active
Description:

If COUNT=1 then this record represents one fish. If COUNT=0 then no fish were collected in this sample.

DISTANCE_METERS

CC ID: 348089
Seq. Order: 16
Data Storage Type: CHARACTER
Max Length: 7
Required: No
Primary Key: No
Status: Active
Description:

Distance in meters from the platform at which the sample was collected. If distance=0 then sample was collected in footprint area under the platform.

COMPASS_DIRECTION

CC ID: 348090
Seq. Order: 17
Data Storage Type: CHARACTER
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Direction from platform where sample was collected. N=north, NE=northeast, etc.

SAMPLING_GEAR

CC ID: 348091
Seq. Order: 18
Data Storage Type: CHARACTER
Max Length: 5
Required: No
Primary Key: No
Status: Active
Description:

Sampling gear in which fish were collected. See Dataset_Metadata tab for futher information.

RAD=Refers to a circular survey of radius 3.35 m conducted on the sea floor by divers.

TRAN=Refers to a diver survey of the sea floor conducted along a transect line attached to the perimeter of the platform at the sea floor.

UPLN=Refers to samples collected by divers from the sea floor in the footprint under the platform. At a given platform (BLOCK) all dead fish collected under the platform were combined into a single sample.

OWLN=Refers to a sampling net placed on the seafloor prior to detonation of explosives and retrieved from the surface after the detonation.

SURF1=Refers to the collection dead fish floating on the sea surface after the first detonation of explosives at the platform.

SURF2=Refers to the collection dead fish floating on the sea surface after the second detonation (if one occurred) of explosives at the platform.

SURF3=Refers to the collection dead fish floating on the sea surface after the third detonation (if one occurred) of explosives at the platform.

OWLNNET

CC ID: 348092
Seq. Order: 19
Data Storage Type: CHARACTER
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Unique number associated with each individual OWLN sample. See Dataset_Metadata tab for futher information.

OWLN_AREA_SQM

CC ID: 348093
Seq. Order: 20
Data Storage Type: CHARACTER
Max Length: 4
Required: No
Primary Key: No
Status: Active
Description:

Area in square meters for the OWLNNET associated with this record. See Dataset_Metadata tab for futher information.

TRAN_WIDTH_METERS

CC ID: 348094
Seq. Order: 21
Data Storage Type: CHARACTER
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Estimated width in meters for the TRANS sample associated with this record. See Dataset_Metadata tab for futher information.

RAD_AREA_SQM

CC ID: 348095
Seq. Order: 22
Data Storage Type: CHARACTER
Max Length: 5
Required: No
Primary Key: No
Status: Active
Description:

Area in square meters for the RAD sample associated with this record. See Dataset_Metadata tab for futher information.

UPLN_COMBINED_AREA_SQM

CC ID: 348096
Seq. Order: 23
Data Storage Type: CHARACTER
Max Length: 6
Required: No
Primary Key: No
Status: Active
Description:

Cumulative total area in square meters for all the UPLN samples collected under the platform at this BLOCK. See Dataset_Metadata tab for futher information.

Support Roles

Data Steward

CC ID: 766125
Date Effective From: 1993
Date Effective To:
Contact (Person): Gitschlag, Gregg
Address: 4700 Avenue U
Galveston, TX 77551
Email Address: Gregg.Gitschlag@noaa.gov
Phone: 409-766-3517
Contact Instructions:

Contact by email preferred.

Distributor

CC ID: 766126
Date Effective From: 2006
Date Effective To:
Contact (Organization): National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD)
Address: NOAA/NESDIS E/OC SSMC3, 4th Floor, 1351 East-West Highway
Silver Spring, MD 20910-3282
Phone: (301) 713-3277

Metadata Contact

CC ID: 766127
Date Effective From: 1993
Date Effective To:
Contact (Person): Gitschlag, Gregg
Address: 4700 Avenue U
Galveston, TX 77551
Email Address: Gregg.Gitschlag@noaa.gov
Phone: 409-766-3517
Contact Instructions:

Contact by email preferred.

Point of Contact

CC ID: 766128
Date Effective From: 2006
Date Effective To:
Contact (Person): Baumer, Tim J
Address: 4700 Avenue U
Galveston, TX 77551
Email Address: tim.baumer@noaa.gov
Phone: 409-766-3784

Distribution Information

Distribution 1

CC ID: 766129
Start Date: 2016
End Date: Present
Download URL: https://www.ncei.noaa.gov/archive/accession/0156750/1.1/data/0-data/InPort_ID_8927/InPort_ID_8927/CSV/MMSREEFish_Collections/MMSREEFish_Collections.csv
Distributor: National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD) (2006 - Present)
File Name: MMSREEFish_Collections.csv
File Type: tabular digital data (Microsoft Excel, CSV, or other tabular format)

Catalog Details

Catalog Item ID: 34602
GUID: gov.noaa.nmfs.inport:34602
Metadata Record Created By: David Huddleston
Metadata Record Created: 2016-09-01 13:42+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2021-05-07
Owner Org: SEFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2021-05-07
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2022-05-07