Metadata: Identification_Information: Citation: Citation_Information: Originator: NOAA National Marine Fisheries Service, Southeast Fisheries Science Center, Galveston Laboratory Publication_Date: 20131113 Title: Fisheries-Independent Biological and Environmental Trawl Data from the Louisiana Department of Wildlife and Fisheries (1986-2007) as Part of the Comparative Assessment of Gulf Estuarine Systems (CAGES) Database Geospatial_Data_Presentation_Form: tabular digital data Publication_Information: Publication_Place: Galveston, TX Publisher: Southeast Fisheries Science Center, Galveston Laboratory Larger_Work_Citation: Citation_Information: Originator: Brown, H., T.J. Minello, G.A. Matthews, M. Fisher, E.J. Anderson, R. Riedel, and D.L. Leffler. Publication_Date: 2013 Title: Nekton from fishery-independent trawl samples in estuaries of the U.S. Gulf of Mexico: a Comparative Assessment of Gulf Estuarine Systems (CAGES) Other_Citation_Details: U.S. Dept. Commerce NOAA Tech. Memo. NMFS-SEFSC-647, 269 p. Online_Linkage: http://www.galvestonlab.sefsc.noaa.gov/stories/2013/ecology/index.html Description: Abstract: The CAGES program (Comparative Assessment of Gulf Estuarine Systems) is designed to examine the differences between estuarine ecosystems and investigate why some are more productive than others. The program focuses on estuarine areas important to commercial fisheries and includes data on commercial finfish and invertebrate species, as well as other species commonly captured in trawl sampling. This Louisiana dataset is a subset of the CAGES Relational Database which is a compilation of fishery-independent data contributed by natural resource agencies of the Gulf States (Texas, Louisiana, Mississippi, Alabama, and Florida). This data set includes data from trawls collected by the Marine Fisheries Division of the Louisiana Department of Wildlife and Fisheries (LDWF), as well as associated hydrographic data. Trawl data were used to calculate CPUE (catch per unit effort) at each station for the years 1986 through 2007. Purpose: The purpose of CAGES is to compile the fishery independent data from five Gulf States into a database to more easily compare the fisheries across the US Gulf of Mexico coast. This dataset includes data collected from Louisiana only. The CAGES database is intended for scientific research only. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19860102 Ending_Date: 20071227 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: Unknown Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -93.43083 East_Bounding_Coordinate: -88.84333 North_Bounding_Coordinate: 30.37 South_Bounding_Coordinate: 28.99333 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: comparative assessment of gulf estuarine systems Theme_Keyword: CAGES Theme_Keyword: Louisiana Department of Wildlife and Fisheries Theme_Keyword: Marine Fisheries Division Theme_Keyword: estuary Theme_Keyword: coastal bay Theme_Keyword: distribution Theme_Keyword: abundance Theme_Keyword: occurrence Theme_Keyword: fisheries Theme_Keyword: fishery independent data Theme_Keyword: CPUE Theme_Keyword: catch per unit effort Theme_Keyword: trawl Theme_Keyword: finfish Theme_Keyword: invertebrate Theme_Keyword: nekton Theme_Keyword: vertebrate Theme_Keyword: crustacean Theme_Keyword: salinity Theme_Keyword: temperature Theme_Keyword: turbidity Theme_Keyword: air temperature Theme_Keyword: water temperature Theme_Keyword: hydrological Theme_Keyword: hydrographic Theme_Keyword: saltwater species Theme_Keyword: brackish water species Theme_Keyword: freshwater species Place: Place_Keyword_Thesaurus: None Place_Keyword: Gulf of Mexico Place_Keyword: Gulf Coast Place_Keyword: Louisiana Place_Keyword: Barataria Bay Place_Keyword: Black Lake Place_Keyword: Breton Sound Place_Keyword: Chandeleur Sound Place_Keyword: Grand Lake Place_Keyword: Lake Borgne Place_Keyword: Lake Calcasieu Place_Keyword: Lake Pontchartrain Place_Keyword: Lost Lake - Four League Bay Place_Keyword: Terrebonne-Timbalier Bays Place_Keyword: Vermillion-Cote Blanche Bays Access_Constraints: None Use_Constraints: None Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Dr. Harmon Brown Contact_Organization: NOAA National Marine Fisheries Service, Southeast Fisheries Science Center, Galveston Laboratory Contact_Address: Address_Type: mailing and physical Address: Galveston Laboratory, 4700 Avenue U City: Galveston State_or_Province: TX Postal_Code: 77551 Country: USA Contact_Voice_Telephone: 409-766-3500 Hours_of_Service: Monday - Friday, 8am - 5pm, Central Standard Time Native_Data_Set_Environment: MS Access database; CAGES_LA.accdb; 128 MB. Data_Quality_Information: Logical_Consistency_Report: NOAA cannot guarantee the scope, accuracy or timeliness of this information. Completeness_Report: NOAA cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Lineage: Process_Step: Process_Description: The Louisiana Department of Wildlife and Fisheries (LDWF) Marine Fisheries Division conducts fishery-independent sampling to assess the state's natural resources, to aid in setting opening and closing dates for fisheries, and to aid in setting catch limits for regulated species. Fishery-independent trawl sampling using the 4.9-m (16-ft) flat otter trawls was scheduled for each year as follows: Nov-Feb (bi-weekly) and Mar-Oct (weekly). Hydrographic data were collected before each trawl tow. Temperature and salinity were measured from surface and bottom waters, and turbidity measured from surface water. Water depth was recorded at the start of the tow. The trawl was towed for 10 minutes: timed from when the trawl first began to move forward to when it stopped forward movement. Towing speed was 4.8 kph (3 mph), and the tow path was either weaving, circular, or straight depending on depth and design of the water body (bayou or open bay), allowing the prop-wash to pass to the side or over the top of the trawl. LDWF provided data for the years 1986-2007. All organisms caught in the trawl were identified to the lowest taxon possible (usually genus and species), counted, and up to 50 of each species were measured in 5-mm intervals. Size measurements were taken as follows: shrimp - total length (TL) measured from the anterior tip of the rostrum to posterior tip of the telson; crabs - carapace width (CW) measured from tip to tip of posterior -lateral spines of the carapace; and fish - measured as total length (LDWF 2002). Process_Date: 2013 Process_Step: Process_Description: Catch data in trawls were converted to numbers caught per hectare (#/ha) using the tow times and calculated conversion factors. The conversion factor was calculated based on an assumed 80% spread of the width of the trawl webbing along the headrope (defined here as the headrope length) and the estimated distance towed in one minute calculated from reported tow times. The conversion factor is equal to the time needed (in minutes) for the trawl to cover one hectare. To calculate the CPUE the following formula was used: Conversion factor / Tow duration (min) X Number caught = #/ha. The conversion factor for Louisiana was calculated to be 32.04. Process_Date: 2013 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Data in the Louisiana CAGES database consists of seven (7) MS Access database tables each of which has an accompanying exported csv file. Tables/files and fields, in the order they occur in the csv files, are as follows: LA CPUE (Sample Code, YYYY, MM, DD, Water Body, Scientific Name, CPUE); Louisiana Lengths (Sample Code, Species Code, Length); Louisiana Species (Species Code, Scientific Name, Common Name); Louisiana Stations (Station Code, CSA, Station, Latitude, Longitude, Site Name, Water Body); Louisiana Trawls (Sample Code, Species Code, Total Number); Louisiana Samples (Sample Code, Station Code, YYYY, MM, DD, Time, Duration); Louisiana Hydrological (Sample Code, Surface Salinity, Bottom Salinity, Air Temperature, Surface Water Temperature, Bottom Water Temperature, Turbidity). In the Louisiana Stations table CSA stands for Coastal Study Area. Latitude and Longitude are provided in decimal degrees; depths are in meters (m); and Times is local time. Units of measure for other fields are as follows: CPUE (number caught per hectare (#/ha)), Length (mm), Time (HH:MM), Duration (Minutes), Salinity (ppt), Air Temperature (Degrees Celsius), Water Temperature (Degrees Celsius), Turbidity (NTU (Nephelometric Turbidity Unit)). Note: Temperature values have known issues, possibly due to entry and or conversion errors. Entity_and_Attribute_Detail_Citation: Brown, H., T.J. Minello, G.A. Matthews, M. Fisher, E.J. Anderson, R. Riedel, and D.L. Leffler. 2013. Nekton from fishery-independent trawl samples in estuaries of the U.S. Gulf of Mexico: a Comparative Assessment of Gulf Estuarine Systems (CAGES). U.S. Dept. Commerce NOAA Tech. Memo. NMFS-SEFSC-647, 269 p. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: US National Oceanographic Data Center Contact_Position: Customer Service Contact_Address: Address_Type: mailing and physical Address: 1315 East-West Hwy; SSMC3 4th Floor City: Silver Spring State_or_Province: MD Postal_Code: 20910-3282 Country: USA Contact_Voice_Telephone: 301-713-3277 x148 Contact_Facsimile_Telephone: 301-713-3302 Contact_Electronic_Mail_Address: NODC.Services@noaa.gov Resource_Description: NODC ACCESSION # _______ Distribution_Liability: NOAA and NODC make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NODC cannot assume liability for any damages caused by any errors or omissions in the data. Metadata_Reference_Information: Metadata_Date: 20131218 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: NOAA/NESDIS/NODC/NCDDC-National Coastal Data Development Center Contact_Address: Address_Type: mailing and physical Address: Bldg. 1021, Suite 1003 City: Stennis Space Center State_or_Province: MS Postal_Code: 39529 Contact_Voice_Telephone: 866-732-2382 Contact_Facsimile_Telephone: 228-688-2968 Contact_Electronic_Mail_Address: ncddcmetadata@noaa.gov Hours_of_Service: Monday - Friday, 8am - 5pm, Central Standard Time Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998