73288 Data Set Published / External 73287 High-Seas Driftnet Fisheries of Japan, Korea and Taiwan in the North Pacific Ocean Project 2024-08-12 In the U.S., driftnet observer data were managed and archived by the Alaska Fisheries Science Center and disseminated to NMFS driftnet program scientists in the AKFSC and the Southwest Fisheries Science Center. Using the combined edited data from all 1990-1991 observer deployments on the squid and large-mesh vessels, Marian Yong of the SWFSC Honolulu Laboratory produced a text file of operation-level, species-specific summary statistics. For each observed operation, separate records of details were created for each species taken during the operation within each observed combination of retrieval type and net depth. In most operations there was just a single category - ordinary retrieval of gear set at the sea surface. All records included a set of header fields including information on vessel ID, flag state, observer nationality, date and location of gear deployment, environmental characteristics, and more. For fish and squid species, each record included additional fields of summary statistics pertaining to the totality of sections monitored: number of sections, mean mesh size, number of standardized (50-m) tans deployed, number of animals decked, number of dropouts, and number of animals of unknown status (this was always empty for squid and fish, as explained below). Other fields contained the same set of aggregate statistics for sections which were monitored for dropouts. In the case of mammals, birds and turtles, some of the fields just described for fish and squid were overloaded with different data pertinent to protected species. The field for decked animals represented the number of animals that were decked and discarded dead, the field for dropouts contained the number of decked animals released alive, and the field for unknown status referred to the number of animals released in unknown condition. In addition to the species-specific records detailing primary monitoring information, data for each operation included a single "Null Species - Operation Marker" record. This was designated by species code 999 and included all the operation-level header data and operation-level summary statistics for average mesh size, total number of sections monitored, and total standardized tans deployed. These statistics were detailed for all the sections monitored and for the subset of sections where dropouts were assessed. The Augmented Data The original text files of observation-level data were prepared in 1992 (dn90obs, dn91obs, and a combined file DNALLOBS). They have been circulated and used in a few subsequent analyses and published papers. However, they have remained largely unavailable and undocumented. The purpose of this project was to create and describe an enhanced version of the original file of combined operation-level data that is easier to use for data analysis and visualization. The enhanced version includes several new fields. To augment the 'species code' field in the original file, new hierarchical taxonomic fields were added to provide species common name, scientific name, group and category. In addition, a new 'date' field was added based on the original fields of operation day, month and year. Finally, new decimal fields of operation 'latitude' and 'longitude' were added. The new data set is provided in an accompanying Excel file: Driftnet Observer Data_12Aug24.xls Theme Foreign Driftnet Theme High Seas Theme PIFSC Theme PIFSC Historical Theme RP Theme Research Pelagic Pacific Islands Fisheries Science Center Honolulu HI USA Data Set CSV Files None Planned Table (digital) Jerry A. Wetherall 73304 DRIFTNET_OBSERVER_DATA_12AUG24 Published / External Completed Augmented Driftnet Observer Data created by Jerry Wetherall. Data Table Yes Augmented Driftnet Observer Data created by Jerry Wetherall. 1 Record Integer 5 No No Active Record serial number (unique record identifier). Integer 2 Flag String 1 No No Active Vessel flag, i.e., host nation (J=Japan, K=Korea, T=Taiwan). String 3 Nationality String 1 No No Active Observer nationality (A=U.S., C=Canada, K=Korea, J=Japan, T=Taiwan). String 4 Fishery String 1 No No Active Type of fishery (S=squid driftnet, L=large-mesh driftnet). String 5 License String 3 No No Active Vessel license number (issued by flag nation). String 6 Operation String 2 No No Active Operation number. Sequential operation ID, assigned daily, unique within fishing trip. String 7 Direction Integer 3 No No Active Set direction (degrees). Units for values are degrees. Integer degrees 8 Latitude_Deg Integer 2 No No Active Latitude at beginning of set (degree component). Units for values are degrees. Integer degrees 9 Latitude_Min Integer 2 No No Active Latitude at beginning of set (minute component). Units for values are minutes. Integer minutes 10 Longitude_Deg Integer 3 No No Active Longitude at beginning of set (degree component). Units for values are degrees. Integer degrees 11 Longitude_Min Integer 2 No No Active Longitude at beginning of set (minute component). Units for values are minutes. Integer minutes 12 Hemisphere String 1 No No Active Hemisphere at beginning of set (E=eastern, W=western). String 13 Latitude Float 5 No No 2 Active Decimal latitude at beginning of set (degrees north of equator). Units for values are degrees. Measures are reported with a precision of 4. Float degrees 14 Longitude Float 7 No No 2 Active Decimal longitude at beginning of set (degrees west of prime meridian). Units for values are degrees. Measures are reported with a precision of 5. Float degrees 15 Day Integer 2 No No Active Day at beginning of retrieval [1-31]. Integer 16 Month Integer 2 No No Active Month at beginning of retrieval [1-12]. Integer 17 Year Integer 4 No No Active Month at beginning of retrieval [1990-1991]. Integer 18 Date_Begin_Retrieval Date 10 No No Active Date at beginning of retrieval [d/m/yyyy]. Date 19 Wind Float 5 No No 1 Active Average of wind direction measured at beginning of set and end of retrieval (degrees). Units for values are degrees. Measures are reported with a precision of 4. Float degrees 20 Beaufort Float 3 No No 1 Active Average of wind force measured at beginning of set and end of retrieval (Beaufort scale). Measures are reported with a precision of 2. Float 21 Swell Float 4 No No 1 Active Average swell height measured at beginning of set and end of retrieval (m). Units for values are meters. Measures are reported with a precision of 3. Float meters 22 SST Float 4 No No 1 Active Average sea surface temperature measured at beginning and end of set and beginning and end of retrieval (degrees C). Units for values are degrees Celsius. Measures are reported with a precision of 3. Float degrees Celsius 23 Type String 1 No No Active Type of retrieval monitoring. In most operations, selected net sections were monitored as the full complement of gear was retrieved during a single haul event on the day setting was completed. In roughly 3% of operations, exceptionally high squid catches or other adverse conditions prevented hauling of all the gear on the day it was set; in these cases some sections were left to soak longer, even while new operations were started. In these extended retrieval or "Tomi Ami" operations, hauling was spread over 1-3 days. Types of retrieval monitoring are coded as follows: 0=monitoring of gear in an ordinary single retrieval event during the day of setting A=monitoring of the portion of gear hauled during the first day of a Tome Ami operation B=monitoring of the portion of gear hauled during the second day of a Tome Ami operation C=monitoring of the portion of gear hauled during the third day of a Tome Ami operation P=monitoring of gear of unknown origin; observer unable to determine whether sections being retrieved are from ordinary or Tomi Ami operation. During some operations, the observer was unable to monitor gear retrieval due to his illness: I=observer ill; no retrieval data recorded. String 24 Depth String 7 No No Active Setting depth of monitored gear. In most operations, all net sections were deployed with the top of net at the sea surface. Occasionally, an operation also included some experimental sections with the top of the net at a depth of 1 m or 2m below the surface. [Surface, 1m, 2m]. String 25 Species_code String 3 No No Active Numeric species code [see accompanying species table]. String 26 Common_name String 36 No No Active Common English name of species. String 27 Scientific_name String 29 No No Active Scientific name of the species. String 28 Taxonomic_Group String 12 No No Active Taxonomic group name (a set of species). String 29 Taxonomic_Category String 13 No No Active Taxonomic category name (a set of groups). String 30 Sections_All Integer 1 No No Active Total number of sections monitored. Integer 31 Sections_Dropout Integer 2 No No Active Number of sections monitored for dropouts. Integer 32 Mesh_All Float 5 No No 1 Active Average mesh size of net panels in all sections monitored (mm). Units for values are millimters. Measures are reported with a precision of 4. Float millimters 33 Mesh_Dropout Float 5 No No 1 Active Average mesh size of net panels in sections monitored for dropouts (mm). Units for values are millimters. Measures are reported with a precision of 4. Float millimters 34 Tans_All Float 6 No No 1 Active Total number of standardized [50m] tans in all sections monitored. Measures are reported with a precision of 5. Float 35 Tans_Dropout Float 5 No No 1 Active Total number of standardized[50m] tans in sections monitored for dropouts. Measures are reported with a precision of 4. Float 36 Decked_Dead_All Integer 5 No No Active Total number of animals decked [squid or fish] or released dead [mammals, birds, turtles] from all monitored sections. Integer 37 Dropped_Alive_All Integer 4 No No Active Total number of animals dropping out during net retrieval [squid or fish] or released alive [mammals, birds, turtles] from all monitored sections. Integer 38 Unknown_All Integer 3 No No Active Total number of animals of unknown status released [mammals, birds, turtles] from all monitored sections. Integer 39 Decked_Dead_Dropout Integer 5 No No Active Total number of animals decked [squid or fish] or released dead [mammals, birds, turtles] from sections monitored for dropouts. Integer 40 Dropped_Alive_Dropout Integer 4 No No Active Total number of animals dropping out during net retrieval [squid or fish] or released alive [mammals, birds, turtles] from sections monitored for dropouts. Integer 41 Unknown_Dropout Integer 2 No No Active Total number of animals of unknown status released [mammals, birds, turtles] from sections monitored for dropouts. Integer Data Steward 2024-08 2024-09 Person Miyamoto, Brent M brent.miyamoto@noaa.gov 1845 Wasp Blvd. Honolulu HI 96818 USA 808-725-5340 8:15 a.m. - 5:15 p.m. HST Via email Distributor 2024 Organization Pacific Islands Fisheries Science Center PIFSC pifsc.info@noaa.gov https://ror.org/02apffz65 1845 Wasp Blvd. Honolulu HI 96818 USA 808-725-5360 https://www.pifsc.noaa.gov Pacific Island Fisheries Science Center homepage Online Resource 8:00 a.m. - 4:30 p.m. Metadata Contact 2024-08 2024-09 Person Miyamoto, Brent M brent.miyamoto@noaa.gov 1845 Wasp Blvd. Honolulu HI 96818 USA 808-725-5340 8:15 a.m. - 5:15 p.m. HST Via email Point of Contact 2024 Person Tokita, Christopher Y christopher.tokita@noaa.gov 1845 Wasp Blvd. Honolulu HI 96818 USA (808)725-5342 8:00 a.m. - 4:30 p.m. HST M-F Via email North Pacific Ocean Range 1990 1991 Standard CC0-1.0 https://creativecommons.org/publicdomain/zero/1.0/ These data were produced by NOAA and are not subject to copyright protection in the United States. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0-1.0). Sensitive Send written request to PIFSC and requires approval by the PIFSC data owner. Requires signing a PIFSC non-disclosure statement for fisheries confidential data. None None Oracle Yes Unknown Yes Yes One year To Be Determined Unknown PIFSC ITS performs scheduled back-ups. 73304 Entity gov.noaa.nmfs.inport:73288 Brent Miyamoto 2024-08-14T01:15:08 SysAdmin InPortAdmin 2025-12-03T01:00:28 2024-08-28 Pacific Islands Fisheries Science Center PIFSC 1845 Wasp Blvd. Honolulu HI 96818 USA 808-725-5300 https://www.pifsc.noaa.gov 8:00 a.m. - 4:30 p.m. 1001 Public No No 2024-08-28 1 Year 2025-08-28