Abstract:

The objectives of this project included using fish traps and demersal longlines to describe and examine differences in species assemblage and relative abundance of demersal fishes in the Gulf of Mexico. This dataset reports the samples collected and associated data from April 25 to May 10, 2017. For some species, biological data such as length and weights are reported. Additional data include the dates, set locations (latitudes, longitudes), depth, water temperature, gear deployed and bait used. These data were collected during the FLRACEP 2017 R/V Apalachee cruise.

Suggested Citation:

R. Dean Grubbs, Charles Cotton, James Gelsleichter. 2018. Longline Sample Data collected during R/V Apalachee cruise, West Florida Shelf to DeSoto Canyon, April 25 - May 10, 2017. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N77H1H3P

Purpose:

To evaluate the biological diversity and trophic interactions among organisms ranging from primary producers to apex predators and from the deep-sea benthos to the coast. These data contribute to a food web model used to determine risks to ecosystem structure and function and regional economies following from extreme anthropogenic events (e.g., discharged and background hydrocarbon) and adaptive management strategies.

Data Parameters and Units:

“FLRACEP_Cruise_April2017_TDR” folder contains 52 *.csv files (one per station, station information can be found in FLRACEP_Cruise_Summary_April2017_for_GRIIDC.xlsx). Each file contains pressure and temperature data readings at a 10s sampling rate at the location/depth of longline deployment. The headings for these files are recording number (Rec #), date of deployment (MM/DD/YY), time (hh:mm:ss), pressure (dBars), temperature (IntTemp [deg. C]). The filename includes the station (e.g., RA-17-001) and set name (e.g., WFSE1). RA stands for Restore Act. All the times in the dataset are EST. The file “FLRACEP_Sample_data_April2017_for_GRIIDC.xlsx” contains two tabs Event_Metadata and Sample_data. “Event_metadata” describes the metadata collected at each site, which includes: ID_DataSheet, Vessel, Event_Data (DD-Mon-YY), Set (Station), Deep-C Station (or Set), Latitude_Start (decimal degrees N), Latitude_Finish (decimal degrees N), Longitude_Start (decimal degrees W), Longitude_Finish (decimal degrees W), DO meter (Dissolved Oxygen meter presence [TRUE] or absence [false]), DO value (ug/l), DO value (%), TDR (Temperature depth recorder), Temp (deg. C), Depth_min (m), Depth_max (m), Actual Depth (m), Time_in (HHMM), Time_set (HHMM), Time_haul (HHMM), Time_out (HHMM), Gear_Effort (longline), Gear_Effort (trap), Longline/Trap/Both, Bait, Wind speed (knots), SeaState (feet), Set Comments, Original datasheet “Sample_data” describes the catch during each set, includes descriptions and measurements for each specimen sampled, which includes: ID_sample, ID_Data_sheet, ID_Data_sample (Station), ID_Species, Sex (male/female), Body Weight (kg), Liver weight (g), Core Temp (deg. C), Standard length (SL [cm]), Disc width (DW [cm]), Fork Length (FL [cm]), Total length (TL [cm]), Mat (Y/N) (Mature? Yes or no), Maturity State (MAT/JUV/NEO/Pup/YOY) (MAT: Mature, JUV: Juvenile, NEO: Neonate, YOY: Young of the year), Tag #, Hook/Trap Size, Condition (If released), Stable Isotope sample collected (SI; # of samples), Genetics samples (GN; # of samples), White muscle sample (WM; # of samples), Blood (BD; # of vials), Bile (BI; Y if collected), Stomach (ST (Y if kept, or E if empty), Rectal gland (RG; Y if collected), Age and Growth Structures (AG [S/R/O/V/unrecorded]; S = spines, R = fin rays, O = otoliths, V = vertebrae, unrecorded = we didn’t collect anything), Gill (Y if collected), Heart (Y if collected), Liver (FSU) (# of samples; how many liver samples were collected for Florida State research, L=1, LL=2 LLL=3), Other (Any other tissues collected, HD: Head, RG: Rectal gland), SP (Y/N) (SP: Specimen– used when we collected a whole specimen but it wasn’t a voucher), Vouchered specimen (VOU; Y if collected), Clasper outer edge length (CO; mm), Clasper inner edge length (CI; mm), Testes length (mm), Testes width (mm), Oviducal gland width (OG; mm), Maximum ova diameter (MOD; mm), Uterine width (UW; mm), reproduction stage, pores (#), Ova/oocyte notes, Vas deferens (VD notes), Other repro notes, Specimen comments The file “FLRACEP_Cruise_Summary_April2017_for_GRIIDC.xlsx” provides a summary of abiotic data from each station during the cruise, the total number of each species caught during the entire cruise, and the original cruise plan and actual cruise plan. The headings for the Report Metadata tab are: Set, Station, Plan Depth (m), Plan Latitude (dec. deg.), Plan Longitude (dec. deg.), Gear (LL=long line), RA specimen numbers , Samples (#), Latitude (dec. deg. N; actual), Longitude (dec. deg. W; actual), Date (DD-Mon-YY; actual), Time in (hh:mm), Time Haul (hh:mm), TDR-Soak_Time (TDR: Temperature depth recorder, hh:mm), TDR time out (hh:mm), D/N (If the set and haul occurred during D:Day or N:Night), Depth TDR, Temp TDR. At the bottom of this spreadsheet there are total which represent the total number of elasmobranch species sampled, teleost species, hagfish species, and invertebrate species sampled, as well as the total number of fish that were sampled. The headings for SpeciesSummReport are: Family, Species, Code, # caught The headings for CruisePlan Report are: Position, Station, Latitude (dec. deg.), Longitude (dec. deg.), Cumulative Distance (NM), Leg Distance (NM), Est. Cruise Time (Hrs), Date (DD-Mon), Actual Arrival (hhmm), Actual Departure (hhmm), Activity (Transit, set, haul)

Individual Files: