SBLL_GoldenTile

Metadata:


Identification_Information:
Citation:
Citation_Information:
Title:
SBLL_GoldenTile
Geospatial_Data_Presentation_Form: vector digital data
Description:
Abstract:
Marine Spatial Data: This dataset came from the Marine Resources Monitoring, Assessment and Prediction (MARMAP) program which has conducted fisheries-independent research for the last 35+ years off the southeastern United States. This dataset was based on a five year time frame (2006-2010). The data were summarized into 1 x 1 minute latitude/longitude grids which provide the number of collections, percent occurrence, mean catch per unit effort (CPUE), and the coefficient of variance for the CPUE. General MARMAP overview: Annual MARMAP cruises to assess relative abundance of reef fishes in the sponge-coral and shelf edge (live bottom) habitats of the South Atlantic Bight (SAB) have been conducted since 1978. MARMAP currently samples natural live bottom habitat from Cape Lookout, NC to the Ft. Pierce area, FL. The current main MARMAP objectives are to: 1.) sample reef fishes in the snapper-grouper complex at using a variety of gears in live bottom, rocky outcrop, high relief, and mud bottom habitats, 2.) collect detailed data for time series description of species for annual composition and relative abundance, 3.) obtain population characteristics on fish species of interest through life history information analysis, including age and growth, sex ratio, size and age of sexual maturation and transition, spawning season, fecundity, and diet. Priorities are dictated by the SEDAR schedule and other management considerations, 4.) collect hydrographic data (e.g. depth, temperature, salinity, etc.) for comparison to fish abundance and composition indices, and 5.) collect DNA samples from selected fish species for stock identification. For thirty years, the Marine Resources Research Institute (MRRI) at the South Carolina Department of Natural Resources (SCDNR), through the Marine Resources Monitoring, Assessment and Prediction (MARMAP) program, has conducted fisheries-independent research on groundfish, reef fish, ichthyoplankton, and coastal pelagic fishes within the region between Cape Lookout, North Carolina, and Ft Pierce, Florida. The overall mission of the program has been to determine distribution, relative abundance, and critical habitat of economically and ecologically important fishes of the South Atlantic Bight (SAB), and to relate these features to environmental factors and exploitation activities. Research toward fulfilling these goals has included trawl surveys (from 6-350 m depth); ichthyoplankton surveys; location and mapping of reef habitat; sampling of reefs throughout the SAB; life history and population studies of priority species; tagging studies of commercially important species and special studies directed at specific management problems in the region. Survey work has also provided a monitoring program that has allowed the standardized sampling of fish populations over time and development of an historical base for future comparisons of long-term trends. MARMAP has developed a long-term database for reef fish that has proven valuable in interpreting fisheries landings data and developing regulations for protecting reef fish resources. Restrictions on minimum sizes of most commercially important species make it difficult to monitor life history parameters and abundance data from samples collected from the fishery landings. MARMAP has been the only existing long-term program off the Atlantic coast of the southeastern United States that monitors reef fish composition, length frequency, abundance, and life history based on fishery-independent data. These data provide critical input for the assessments of stock status conducted by NOAA Fisheries, and greatly assist stock assessment scientists and the Council in the management of snapper/grouper complex of the South Atlantic Bight. The abundance and biomass of fish species collected during the day from 2006 to 2010 off the coast of the southeastern United States (Cape Fear, NC to Cape Canaveral, FL) were collected using short bottom long lines. The short bottom long line consists of 25.6 m of 6.4 mm diameter treated solid braid Dacron (polyester) ground line dipped in green copper naphthenate. Twenty gangions with non-offset circle hooks (almost exclusively #5 Eagle claw size) at intervals of approximately 1.2 m. Upon deployment we tethered the ground line to the surface using an 8 mm (5/16 inch) polypropylene line attached to a polyball buoy. The buoy was attached to a hi-flyer buoy using a 10 m trailer line. The line was deployed by stretching the ground line along the vessel's gunwale with 10-11 kg weights attached at each end of the line. The gangions consisted of an AK snap, 0.5 m of 90 kg monofilament and a tuna circle hook, and were baited (double hooked) with a whole squid (Illex sp. or Loligo sp.). Soak time was approximately 90 minutes, after which the gear was retrieved utilizing a hydraulic pot hauler. The short bottom long lines were generally deployed in sets of six, with each long line attached to its own surface polyball and highflyer buoy and not connected to any other long line.
Purpose:
This GIS dataset was created for the purpose of describing the distribution and relative abundance of the numerically dominant and economically important deep-water finfish species in southeastern coastal waters so that these biological resources can be considered for any planned energy development or other coastal use activities.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20060101
Ending_Date: 20100101
Currentness_Reference:
Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -80.298314
East_Bounding_Coordinate: -76.099035
North_Bounding_Coordinate: 34.312433
South_Bounding_Coordinate: 27.776447
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Lopholatilus chamaeleonticeps
Theme_Keyword: Fishery-independent
Theme_Keyword: Snapper-grouper complex
Theme_Keyword: Golden tilefish
Theme_Keyword: Fisheries
Theme_Keyword: SCDNR
Theme_Keyword: Short Bottom Long Line
Theme_Keyword: MARMAP
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: South Atlantic Bight
Place_Keyword: South Carolina
Access_Constraints: None
Use_Constraints:
1.) The use of the summary data provided in this database for any analysis or report must acknowledge the MARMAP program as the original data source. For information purposes, email the full citation of any publication made (printed or electronic) that cites this data source or any constituent part. Acknowledge the use of specific records from contributing MARMAP databases and recognize the limitations of data. 2.) Neither the State of South Carolina, the Department of Natural Resources, nor any of its employees, is responsible for any improper or incorrect use of the information described and/or contained herein, and assume no responsibility for the use of the information. The South Carolina Department of Natural Resources should be acknowledged as the data source in products derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: MARMAP, SCDNR
Contact_Person: Dr. Marcel Reichert
Contact_Position: Associate Scientist; Coastal Finfish Section Manager
Contact_Address:
Address_Type: mailing
Address:
217 Fort Johnson Rd.
City: Charleston
State_or_Province: SC
Postal_Code: 29412
Country: US
Contact_Voice_Telephone: 843-953-6778
Contact_Facsimile_Telephone: 843-953-9820
Contact_Electronic_Mail_Address: reichertm@dnr.sc.gov
Native_Data_Set_Environment:
Version 6.2 (Build 9200) ; Esri ArcGIS 10.1.0.3035
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Data_Quality_Information:
Lineage:
Process_Step:
Process_Description:
Field Data Collection: The short bottom long line consists of 25.6 m of 6.4 mm diameter treated solid braid Dacron (polyester) ground line dipped in green copper naphthenate. Twenty gangions with non-offset circle hooks (almost exclusively #5 Eagle claw size) at intervals of approximately 1.2 m. Upon deployment we tethered the ground line to the surface using an 8 mm (5/16 inch) polypropylene line attached to a polyball buoy. The buoy was attached to a hi-flyer buoy using a 10 m trailer line. The short bottom long line was deployed by stretching the ground line along the vessel's gunwale with 10-11 kg weights attached at each end of the line. The gangions consisted of an AK snap, 0.5 m of 90 kg monofilament and a tuna circle hook, and were baited (double hooked) with a whole squid (Illex sp. or Loligo sp.). Soak time was approximately 90 minutes, after which the gear was retrieved utilizing a hydraulic pot hauler. The short bottom long lines were generally deployed in sets of six, with each long line attached to its own surface polyball and hi-flyer buoy and not connected to any other long line. Up to six long lines, separated by a minimum distance of 200 m, are fished at the same time. All individuals in each line are sorted and identified to species level. All individuals of each species are weighed together, while length is individually measured for all fish. All Individuals of selected species are kept for life history work-up. All other fish are returned to the ocean. For any given species, a catch per unit effort (CPUE) is calculated for any 1 x 1 minute grid cell that was sampled by the MARMAP program within the 5 year time frame (2006-2010). All catches used in the calculations were from sets that were soaked between 45 and 150 minutes. CPUE was calculated as the number of a selected species caught per 20 hooks per hour of soak time. The number of set, the percent occurrence (the number of positive traps divided by the number of available sets), and coefficient of variance for CPUE was calculated for each 1 x 1 minute grid cell.
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: MARMAP, SCDNR
Contact_Person: Dr. Marcel Reichert
Contact_Position: Associate Scientist; Coastal Finfish Section Manager
Contact_Address:
Address_Type: physical
Address:
217 Fort Johnson Rd.
City: Charleston
State_or_Province: SC
Postal_Code: 29412
Country: US
Contact_Voice_Telephone: 843-953-6778
Contact_Facsimile_Telephone: 843-953-9820
Contact_Electronic_Mail_Address: reichertm@dnr.sc.gov
Process_Step:
Process_Description:
GIS processing: 1.) One point layer per species was created where each point was the mid-point of a 1 x 1 minute grid cell where there was MARMAP sampling between 2006-2010 (within the SC offshore study area of 32 to 34 degrees N). 2.) A 1 x 1 min. grid of the whole offshore study area was created. 3.) A spatial selection was performed to select those 1 x 1 min. grid cells that contained MARMAP mid-points. A new layer was created with just the selected grid cells. 4.) The mid-points from the species layer were spatially joined to the 1 x 1 min. grid layer to create a final grid layer per species.
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: SCDNR, MRRI
Contact_Person: Jessica Boynton
Contact_Position: GIS Manager I
Contact_Address:
Address_Type: physical
Address:
217 Fort Johnson Rd.
City: Charleston
State_or_Province: SC
Postal_Code: 29412
Contact_Voice_Telephone: 843-953-9163
Contact_Facsimile_Telephone: 843-953-9820
Contact_Electronic_Mail_Address: boyntonj@dnr.sc.gov
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 59
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Transverse Mercator
Transverse_Mercator:
Transverse Mercator
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -81.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.0001
Ordinate_Resolution: 0.0001
Planar_Distance_Units:
Geodetic_Model:
Horizontal_Datum_Name: D North American 1983
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: SBLL_GoldenTile
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition:
Internal feature number.
Attribute_Definition_Source:
Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition:
Feature geometry.
Attribute_Definition_Source:
Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Coordinates defining the features.
Attribute:
Attribute_Label: N_Coll
Attribute_Definition:
The total number of long lines within a 1 x 1 minute grid cell.
Attribute:
Attribute_Label: Pct_Occ
Attribute_Definition:
The percent occurrence of a species on long lines within a 1 x 1 minute grid cell was determined by calculating the number of long lines with a positive occurrence divided by the total number of long lines and converted to a percentage by multiplying by 100.
Attribute:
Attribute_Label: MeanCPUE
Attribute_Definition:
Mean catch per unit effort within a 1 x 1 minute grid cell was determined by calculating the number of fish of a specific species caught per long line hour, divided by the total number of long lines deployed.
Attribute:
Attribute_Label: CV_CPUE
Attribute_Definition:
Coefficient of variance for the mean catch per unit effort (MeanCPUE) was determined by dividing the standard deviation of the mean catch per unit effort by the total catch per unit effort.
Attribute:
Attribute_Label: Mid_Lat
Attribute_Definition:
This is the latitude for the center point for each 1 x 1 min. grid cell.
Attribute:
Attribute_Label: Mid_Lon
Attribute_Definition:
This is the longitude for the center point for each 1 x 1 min. grid cell.
Attribute:
Attribute_Label: BLOCK
Attribute_Definition:
The BLOCK number is the lat and long (lat degree lat min long degree long min) for the lower right corner of each 1 x 1 min. grid cell.
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition:
Length of feature in internal units.
Attribute_Definition_Source:
Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: Shape_Area
Attribute_Definition:
Area of feature in internal units squared.
Attribute_Definition_Source:
Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Positive real numbers that are automatically generated.
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: South Carolina Department of Natural Resources
Contact_Position: Spatial Data Manager
Contact_Address:
Address_Type: mailing
Address:
Rembert C. Dennis Building P.O. Box 167
City: Columbia
State_or_Province: SC
Postal_Code: 29202
Country: US
Contact_Voice_Telephone: 803-734-9100
Contact_Facsimile_Telephone: 803-734-7001
Contact_Electronic_Mail_Address: gisman@dnr.sc.gov
Distribution_Liability:
See access and use constraints information.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: File Geodatabase Feature Class
Digital_Transfer_Option:
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Metadata_Reference_Information:
Metadata_Date: 20130218
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: SCDNR
Contact_Person: Jessica Boynton
Contact_Position: GIS Manager I
Contact_Address:
Address_Type: physical
Address:
217 Fort Johnson Rd.
City: Charleston
State_or_Province: SC
Postal_Code: 29412
Country: US
Contact_Voice_Telephone: 843-953-9163
Contact_Facsimile_Telephone: 843-953-9820
Contact_Electronic_Mail_Address: boyntonj@dnr.sc.gov
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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