Gulf of Maine Cooperative Bottom Longline Survey Database

27731

Cooperative Bottom Longline Survey Database

Data Set

Published / External

23136

Northeast Cooperative Research Program (NCRP)

Project

Completed This database is for a bottom longline (fixed gear) survey executed in the western and central Gulf of Maine targeting complex rocky habitats. The survey is operated from collaborating commercial fishing vessels, and deploys 1 nm sets of traditional 'tub trawl' bottom longline groundfish gear (1000 hooks). Longline gear is deployed at randomly selected stations within selected NEFSC bottom trawl survey (BTS) strata in the western and central Gulf of Maine during the spring and autumn, overlapping temporally with the NEFSC seasonal BTS in that region. Specific ‘hard’ and ‘smooth’ bottom sub-strata were chosen within the BTS strata based on predictive habitat maps that have identified complex habitat at a spatial resolution of @1.3km2 (Manderson et al. 2011). The total number of longline stations are allocated by the overall area of each stratum, as done in the NEFSC BTS, and stations randomly distributed in the ‘hard’ and ‘smooth’ sub-stratum within each stratum. Each set is made for 2 hours, with gear deployed 1 hour prior to the estimated time for slack tide at that location. The ambient current is monitored with an instrument with an accelerometer (also equipped with a compass and thermometer), which is attached to the mainline on each end of the longline (by the last hook). Temperature-depth probes are deployed on the anchor at each end of the longline. Catch weights, fish lengths, and other biological data are collected for all species following standard survey protocols. Biological sampling (for age and reproductive data) is collected for a subset of species and sizes relative to the BTS’s request protocols to fill in data on uncommon species, and less common sizes (i.e. larger individuals) of key groundfish. The objective of this survey is to provide important information for several species that are not well sampled in BTS or those that are not caught in substantive numbers (targeted) by commercial or recreational fisheries to inform management, Endangered Species Act (ESA) listing decisions, and conservation plan measures. These include cusk, which is a candidate species under the ESA and a data poor stock, as well as Atlantic Wolffish, Atlantic Halibut, and Thorny Skate, which are all NOAA Species of Concern. This survey is designed to increase sampling opportunities for all of these species. Catch and biological data from this survey provides useful supplemental data and indices for other groundfish including white hake, barndoor skate, red hake, spiny dogfish, haddock, Atlantic cod, and smooth skate. A bottom longline (fixed gear) survey executed in the western and central Gulf of Maine focused on areas of complex rocky habitat that are not readily sampled by mobile trawl gear. This survey addresses concerns about the limited data of specific species in hard bottom habitats for important groundfish stocks collected on other surveys. It particularly enhances data collection for several data poor and depleted stocks that are specifically associated with rocky habitat.

Theme

bottom longline

Theme

cooperative research

Theme

data poor species

Theme

fishery independent

Theme

fixed gear

Theme

groundfish

Theme

survey

Temporal

biannual

Temporal

fall

Temporal

spring

Spatial

Cashes Ledge

Spatial

Fippennies Ledge

Spatial

Gulf of Maine

Spatial

Jeffreys Ledge

Spatial

Platts Bank

Spatial

Stellwagen Bank

Spatial

hard bottom

Spatial

ledges

Spatial

rocky habitat

Stratum

0126

Stratum

0127

Stratum

0128

Stratum

0129

Stratum

0136

Stratum

0137

Stratum

bottom trawl survey strata

Stratum

offshore strata

NEFSC Woods Hole Lab Woods Hole

USA

Data Set

Oracle Database

Continually

Table (digital)

Lat37 950w FMB (wireless fish board) and an Allegro AMX-3 field PC (see also technical environment). GPS and transducer data are recorded from the commercial vessels' systems and differ between vessels. Those data are recorded on Dell latitude e5430 Laptops. Merel 1100 series 150kg and 6kg max capacity scales. Star Oddi temperature-depth sensors deployed in aluminum housings on each anchor. Seahorse tilt current meter in a positively buoyant pvc housing clipped to the longline gear. Contracted commercial fishing vessels

Tub-trawl (fixed gangion) bottom longline 1 nm in length with 1/4 inch braided mainline. Their are 1,000 VMC 12/0 hooks on 15 inch gangions (#550 green line) spaced at 6 ft intervals, which are braided onto the mainline. One gear set is composed of 4 totes/tubs of gear (250 hooks each). The gear is anchored at both ends and has a polyball and highflier at the surface attached to the anchors at each end by a length of buoy line appropriate to the depth and sea state.

35948

LL_BIOSAMPLING

Published / External

Completed Biological data for individual organisms

Data Table

Yes

Biological data for individual organisms

CRUISE

NUMBER

10 0 Active Unique numerical code for each cruise. Specific to a vessel and season. Five digits, where first 2 digits indicate vessel, next 2 year, last digit season. For example 24142 = Tenacious II 2014 fall survey or 25151 = Mary Elizabeth 2015 spring survey. If last digit = 3 it is an experimental survey trip

NUMBER

STATION

NUMBER

5 0 Active Unique sequential order in which stations have been completed, unique to each cruise code. Failed gear deployments each receive a non-repeated consecutive number.

NUMBER

COMMON_NAME

VARCHAR2

Active A standard common name which represents a species caught. Refer to the SVDBS.SVSPECIES_LIST

VARCHAR2

SVSPP

NUMBER

5 0 Active A standard code which represents a species caught. Refer to the SVDBS.SVSPECIES_LIST

NUMBER

LENGTH

NUMBER

4 0 Active Measured length of species in millimeters (mm). Measure method differs by species.

NUMBER

WEIGHT

NUMBER

6 3 Active Weight of the current organism (kg)

NUMBER

SEX

NUMBER

Active Code indicating sex of fish or invertebrate species. See SVDBS.FSCS_SEX_CODES. Codes 0, 1, 2 and 4 are the only valid codes in fscs tables.

NUMBER

MATURITY

VARCHAR2

Active Stage of maturation of the organism being sampled. See SVDBS.FSCS_MATURITY_CODES. For skates see FSCS2.ORGANISM_ACTION_PARAMETERS.ORGANISM_ACTION_ID = 356 AND 357

VARCHAR2

FISH_ID

NUMBER

8 0 Active Unique numerical code assigned to age samples taken from a specimen

NUMBER

GONAD_WT

NUMBER

6 1 Active Weight of both gonads of the current organism (g)

NUMBER

LIVER_WT

NUMBER

6 1 Active Weight of the liver of the current organism (g)

NUMBER

GUTTED_WT

NUMBER

6 1 Active Weight of the current organism with organs removed (kg)

NUMBER

COMMENTS

VARCHAR2

255

Active Comments associated with the current organism

VARCHAR2

AGE

NUMBER

3 0 Active Age of specimen in years

NUMBER

EST_LENGTH

VARCHAR2

Active Binary indicator of whether the length of an organism was measured (N) or estimated by otolith back-calculation (Y)

AUDIT_FLAG

VARCHAR2

Active Binary flag that indicates a data issue was identified during the audit (if = Y), with details provided in the comments field. It may indicate a data field that is not recommended for use in analysis.

35949

LL_CATCH

Published / External

Completed Table contains the catch data for each station

Data Table

Yes

Table contains the catch data for each station

CRUISE

NUMBER

STATION

NUMBER

5 0 Active Unique sequential order in which stations have been completed, unique to each cruise code. Failed gear deployments each receive a non-repeated consecutive number.

NUMBER

COMMON_NAME

VARCHAR2

Active A standard common name which represents a species caught. Refer to the SVDBS.SVSPECIES_LIST

VARCHAR2

SVSPP

NUMBER

5 0 Active A standard code which represents a species caught. Refer to the SVDBS.SVSPECIES_LIST

NUMBER

SEX

NUMBER

2 0 Active Code indicating sex of fish or invertebrate species. See SVDBS.FSCS_SEX_CODES. Codes 0, 1, 2 and 4 are the only valid codes in fscs tables.

NUMBER

LENWT

NUMBER

9 3 Active Weight (kg) of individuals for which length was measured for that species.

NUMBER

LENNUM

NUMBER

6 0 Active Number of individuals for that species that lengths were measured.

NUMBER

CATCHWT

NUMBER

9 3 Active Mass of all catch (kg) for a species. This includes both the weight of catch for which lengths were taken and subsampled portions of the catch. Catch weight is also expanded for damaged catch. Damaged catch expansion varies by species and damage level. These protocols are still under development for some species. If length data was obtained for the damaged individuals weight is estimated from the organism lengths. If organism(s) was not intact and an otolith was obtained length and weight are estimated by otolith size back-calculation. Length back-calculation is done using a species-specific GAM model with data available in COOPLL.OTOLITH_LENGTH_PREDICTION_DATA using a measurement of the damaged individual's otolith length and width, one or both as available. If no otolith was obtained the weight are estimated using the mean weight within that strata for the species. If there are limited data available within strata for that species than a mean for the whole survey region is applied.

NUMBER

CATCHNUM

NUMBER

6 0 Active Expanded number of individuals of a species caught at a given station. Includes count of damaged individuals and expansion of the count for subsampled catch. Expansion of the subsampled catch is done using the length-frequency distribution from that station, or if data is insufficient than the distribution for the entire strata.

NUMBER

COMMENTS

VARCHAR2

255

Active Catch comments for the current species.

VARCHAR2

AUDIT_FLAG

VARCHAR2

35950

LL_LENGTH

Published / External

Completed Table contains the length data for each station

Data Table

Yes

Table contains the length data for each station

CRUISE

NUMBER

STATION

NUMBER

5 0 Active Unique sequential order in which stations have been completed, unique to each cruise code. Failed gear deployments each receive a non-repeated consecutive number.

NUMBER

SVSPP

NUMBER

5 0 Active A standard code which represents a species caught. Refer to the SVDBS.SVSPECIES_LIST

NUMBER

COMMON_NAME

VARCHAR2

Active A standard common name which represents a species caught. Refer to the SVDBS.SVSPECIES_LIST

VARCHAR2

SEX

NUMBER

2 0 Active Code indicating sex of fish or invertebrate species. See SVDBS.FSCS_SEX_CODES. Codes 0, 1, 2 and 4 are the only valid codes in fscs tables.

NUMBER

LENGTH

NUMBER

4 0 Active Measured length of an individual in centimeters (cm). Measure method differs by species

NUMBER

ENTRY_ORDER

NUMBER

4 0 Active Order in which fish were measured or entered into the field computer.

NUMBER

NOTES

VARCHAR2

255

Active Comments related to the measurement of the individual organism's length.

VARCHAR2

VESSEL

NUMBER

Active Two digit code for the vessel on which the organism was collected and measured. Matches with code in LL_STATION.CRUISE. Values are 24 = Tenacious II or 25 = Mary Elizabeth

NUMBER

EST_LENGTH

VARCHAR2

Active Binary indicator of whether the length of an organism was measured (N) or estimated by otolith back-calculation (Y)

VARCHAR2

AUDIT_FLAG

VARCHAR2

35951

LL_STA_EVAL_CODES

Published / External

Completed Descriptions and values for the longline survey station evaluation coding

Data Table

Yes

Descriptions and values for the longline survey station evaluation coding

STATION_CODING_CAT

VARCHAR2

Active Station coding categories

VARCHAR2

CATEGORY_DESCR

VARCHAR2

Active Description of the station coding categories

VARCHAR2

CODE_VALUES

NUMBER

1 Active Available values for each coding variable

NUMBER

DISPLAY_VALUES

VARCHAR2

Active Value that is displayed in the software GUI for recording the data while at sea

VARCHAR2

CODE_DESCR

VARCHAR2

Active Description for the different values for each station coding variable

VARCHAR2

35952

LL_STATION

Published / External

Completed Table contains the operational and location data for each station

Data Table

Yes

Table contains the operational and location data for each station

CRUISE

NUMBER

STATION

NUMBER

5 0 Active Unique sequential order in which stations have been completed, unique to each cruise code. Failed gear deployments each receive a non-repeated consecutive number.

NUMBER

STATION_ID

VARCHAR2

Active A predefined identifier generated during the random station assignment indicating the area where a piece of fishing gear is to be deployed. (Strata coding modified from the SVDBS definition, see SVDBS.UNION_FSCS_SVSTA.STRATUM) Code consists of 3 parts: Stratum number (2bytes) and bottom stratum type (1 bytes). Stratum number refers to strata from the SVDBS offshore stratum group with the numbers defined by depth zone. The third byte refers to the longline survey bottom strata type; 1 = smooth bottom; 0 = rough bottom. The fifth byte (following a dash as the fourth byte) is the number assigned based on the random sequential order drawn within each stratum and bottom type. For example: 270-5 would be the fifth random rough-bottom station drawn in strata 27; 361-1 would be the first random smooth-bottom station drawn in strata 36.

VARCHAR2

TRIP_ID

NUMBER

20 0 Active Unique trip identifier generated in FLDRS software. Generated to identify each fishing trip from port. Fishing operation data collected using the FLDRS software and initially loaded into FVTR tables, before being migrated to this schema. See FVTR.CRPP_VERS_TRIP

NUMBER

EFFORT_NUM

NUMBER

5 0 Active Unique identifier for each fishing effort (gear deployment) within a trip, see FVTR.CRPP_VERS_TRIP

NUMBER

STRATUM

NUMBER

5 0 Active A predefined area where the longline gear was deployed. Stratum is a two digit number referring to the stratum number from the SVDBS stratum definition, see SVDBS.UNION_FSCS_SVSTA.STRATUM. All longline strata are taken from the SVDBS offshore stratum group. May be null or differ from ASSIGNED_STRATUM, if more than 50% of the gear was deployed over the boundary into an adjoining stratum.

NUMBER

ASSIGNED_STRATUM

NUMBER

5 0 Active The predefined area where the longline gear was assigned to be deployed. Stratum is a two digit number referring to the stratum number from the SVDBS stratum definition, see SVDBS.UNION_FSCS_SVSTA.STRATUM. All longline strata are taken from the SVDBS offshore stratum group. ASSIGNED STRATUM will match the first two bytes of the STATION_ID code

NUMBER

BOTTOM_TYPE

VARCHAR2

Active A bottom type substratification specific to the longline survey. Rough bottom strata were defined as areas above the 70th percentile for Terrain Rugged Index values (Hare at al. 2012) within each stratum. Regions below the 70th percentile cut point were assigned to the smooth-bottom sub-stratum.

VARCHAR2

AREA

NUMBER

5 0 Active Standard area code used for commercial data (New England Statistical Area Code) for the position of the beginning of the tow.

NUMBER

BEGIN_SET_TIME

DATE

Active Datetime (UTC) when the gear is first placed in the water at the start of the fishing effort

DATE

END_SET_TIME

DATE

Active Datetime (UTC) when setting of the gear has stopped and the gear begins to fish

DATE

BEGIN_HAUL_TIME

DATE

Active Datetime (UTC) when fishing stops and hauling the gear starts

DATE

END_HAUL_TIME

DATE

Active Datetime (UTC) when the gear has been completely hauled and is back aboard the vessel

DATE

SOAK_DURATION_DH

NUMBER

7 4 Active Soak or haul duration of the fishing effort (h.hh), from END_SET_TIME until BEGIN_HAUL_TIME

NUMBER

DECDEG_BEGLAT_SET

NUMBER

8 5 Active Latitude where the gear is first placed in the water at the start of the fishing effort (ddmm.mmmm)

NUMBER

DECDEG_BEGLON_SET

NUMBER

8 5 Active Longitude where the gear is first placed in the water at the start of the fishing effort (dddmm.mmmm)

NUMBER

DECDEG_ENDLAT_SET

NUMBER

8 5 Active Latitude where the setting of the gear has stopped and the gear begins to fish (ddmm.mmmm)

NUMBER

DECDEG_ENDLON_SET

NUMBER

8 5 Active Longitude where the setting of the gear has stopped and the gear begins to fish (dddmm.mmmm)

NUMBER

DECDEG_BEGLAT_HAUL

NUMBER

8 5 Active Latitude where fishing stops and hauling the gear starts (ddmm.mmmm)

NUMBER

DECDEG_BEGLON_HAUL

NUMBER

8 5 Active Longitude where fishing stops and hauling the gear starts (dddmm.mmmm)

NUMBER

DECDEG_ENDLAT_HAUL

NUMBER

8 5 Active Latitude where the gear has been completely hauled and is back aboard the vessel (ddmm.mmmm)

NUMBER

DECDEG_ENDLON_HAUL

NUMBER

8 5 Active Longitude where the gear has been completely hauled and is back aboard the vessel (dddmm.mmmm)

NUMBER

STATION_TYPE

NUMBER

1 Active Survey station type. See LL_STA_EVAL_CODES for values. Value = 1 is the recommended threshold for valid standard survey sets

NUMBER

STATION_ASSIGNMENT

NUMBER

1 Active Source for the station assignment. See LL_STA_EVAL_CODES for values. Any value is considered acceptable for valid standard survey sets

NUMBER

GEAR_EVALUATION

NUMBER

1 Active Evaluation of the condition of the longline gear made at the end of gear hauling. Most commonly tangled sections of mainline, buoy line, and hooks. Tangles could have occurred during gear setting, hauling, or while on bottom. Captured fish could have contributed to the tangle. Tangles observed at haul back do not inherently indicate a reduced fishing capacity. See LL_STA_EVAL_CODES for values. A value < 4 is the recommended threshold for valid standard survey sets

NUMBER

GEAR_DAMAGE

NUMBER

1 Active Mainline parted during hauling, once or multiple times. In most cases this will not impact fishing capacity, unless there is a loss of some gear, but may increase haul time. See LL_STA_EVAL_CODES for values. A value < 5 is the recommended threshold for valid standard survey sets

NUMBER

GEAR_INTERACTION

NUMBER

1 Active Any interactions of the survey gear with other fishing gear or other human objects. See LL_STA_EVAL_CODES for values. A value < 4 is the recommended threshold for valid standard survey sets

NUMBER

INTERACTION_TYPE

NUMBER

1 Active Category for the gear or object with which the survey interacted. See LL_STA_EVAL_CODES for values.

NUMBER

ENVIRONMENTAL_CONDITONS

NUMBER

1 Active Any conditions or situations related to environmental conditions or biota that might have impacted the survey gear and its capacity to fish consistently. See LL_STA_EVAL_CODES for values. A value < 4 is the recommended threshold for valid standard survey sets

NUMBER

DATA_ACQUISITION

NUMBER

1 Active Equipment, computer, or other data collection problems that might have contributed to the amount or quality of the data collected. See LL_STA_EVAL_CODES for values. A value < 4 is the recommended threshold for valid standard survey sets

NUMBER

SET_NOTES

VARCHAR2

300

Active Comments field for notes related to the deployment of the gear

VARCHAR2

HAUL_NOTES

VARCHAR2

300

Active Comments field for notes related to the hauling of the gear

VARCHAR2

CATCH_NOTES

VARCHAR2

300

Active Comments field for notes related to the catch

VARCHAR2

BOTTOM_VIDEO

NUMBER

1 Active Binary indicator of whether a drop camera video was taken at the station: 1 = usable video footage obtained, 0 = no usable video footage obtained

NUMBER

WINDDIR

VARCHAR2

Active Direction of wind during deployment of gear (degrees).

VARCHAR2

WINDSP

NUMBER

3 0 Active Speed of wind in knots.

NUMBER

WAVEHGT

NUMBER

3 0 Active Height of waves (m).

NUMBER

SWELLHGT

NUMBER

3 0 Active Swell height (m).

NUMBER

VESSEL_NAME

VARCHAR2

Active Name of vessel.

VARCHAR2

CURRENT_INSTR_ID1

VARCHAR2

Active Identification code for the current instrument attached to the first end of the longline gear deployed

CURRENT_INSTR_ID2

VARCHAR2

Active Identification code for the current instrument attached to the first end of the longline gear deployed

35953

OTOLITH_LENGTH_PREDICTION_DATA

Published / External

Completed Otolith size (length or width) data taken from age samples of fish collected on the NEFSC bottom trawl or shrimp surveys or from the Cooperative bottom longline survey, fish data taken from the corresponding survey database. Otoliths were measured using digital calipers for their maximal length or width.

Data Table

Yes

Otolith size (length or width) data taken from age samples of fish collected on the NEFSC bottom trawl or shrimp surveys or from the Cooperative bottom longline survey, fish data taken from the corresponding survey database. Otoliths were measured using digital calipers for their maximal length or width.

CRUISE

NUMBER

38 Active Unique numerical code for each cruise. See SVDBS.UNION_FSCS_SVSTA.CRUISE6 OR COOPLL.LL_STATION.CRUISE

NUMBER

STATION

NUMBER

38 Active Unique sequential order in which stations have been completed, unique to each cruise code. Failed gear deployments each receive a non-repeated consecutive number.

NUMBER

SVSPP

NUMBER

38 Active A standard code which represents a species caught. Refer to the SVDBS.SVSPECIES_LIST

NUMBER

INDID

NUMBER

38 Active A unique identifier for each fish sampled.

NUMBER

FLOAT

126 Active Maximum straight-line length of an individual otolith in mm

FLOAT

126 Active Maximum straight-line width of an individual otolith in mm

FLOAT

LENGTH

FLOAT

126 Active Measured length of species in centimeters (cm). Measure method differs by species.

FLOAT

SEX

NUMBER

38 Active Code indicating sex of fish or invertebrate species. See SVDBS.FSCS_SEX_CODES if using fscs data. Codes 0, 1, 2 and 4 are the only valid codes in fscs tables.

NUMBER

51288

LL_DAMAGED_FISH_OTOLITHS

Published / External

Completed Otolith size data collected from the otoliths recovered from fish damaged while on the longline. The otolith size is used to estimate the original size of the fish through back-calcuation via regressions determined using the data in OTOLITH_LENGTH_PREDICTION_DATA.

Data Table

Otolith size data collected from the otoliths recovered from fish damaged while on the longline. The otolith size is used to estimate the original size of the fish through back-calcuation via regressions determined using the data in OTOLITH_LENGTH_PREDICTION_DATA.

CRUISE

NUMBER

STATION

NUMBER

5 0 Active Unique sequential order in which stations have been completed, unique to each cruise code. Failed gear deployments each receive a non-repeated consecutive number.

SVSPP

NUMBER

5 0 Active A standard code which represents a species caught. Refer to the SVDBS.SVSPECIES_LIST.

FISH_ID

NUMBER

3 0 Active An identifier for the individual otolith measured from a damaged fish, unique within each cruise

NUMBER

6 4 Active Otolith length in mm

NUMBER

6 4 Active Otolith width in mm

Data Steward

2014-04

Person

McElroy, W. David

dave.mcelroy@noaa.gov

166 Water Street

Woods Hole

02543-1026

USA

508-495-2249

508-495-2258

Distributor

2014

Organization

Northeast Fisheries Science Center

NEFSC

https://ror.org/02nc0ck44

166 Water Street

Woods Hole

02543-1026

USA

(508)495-2000

https://www.fisheries.noaa.gov/about/northeast-fisheries-science-center

NEFSC Home Page

Online Resource

8:00 a.m. to 4:30 p.m. Monday - Friday

Metadata Contact

2015-10

Person

McElroy, W. David

dave.mcelroy@noaa.gov

166 Water Street

Woods Hole

02543-1026

USA

508-495-2249

508-495-2258

Originator

2014-04

2016-08

Person

Martin, Michael

michael.martin@noaa.gov

166 Water Street

Woods Hole

02453

508-495-2106

508-495-2258

Point of Contact

2016

Person

Gervelis, Brian J

brian.gervelis@noaa.gov

28 Tarzwell Drive

Narragansett

02882

401-782-3337

401-782-3292

-70.5602

-67.60223

43.27977

42.09656

Central and western Gulf of Maine in U.S. territorial waters. Bottom trawl survey offshore strata: 0126, 0127, 0128, 0129, 0136, 0137

Continuing

2014-04

Biannual survey (spring & fall) conducted in 2014-2015. Survey is conducted in April/May and Oct/November in conjuction with the BTS leg 4. In spring 2014 a vessel breakdown resulted in survey completetion in the first few days of June.

Unclassified

NEFSC Data Access Procedure: 1. Formal request in writing usually to the data owner/contact or Center Director; 2. Requester is contacted by data owner to review and verify the request content and details for data delivery options. 3. If data is confidential then owner will determine if the data may be released to the requester; 4. If data can be released, the data is downloaded and packaged for delivery electronically; or the requester may be directed to where the data is available online.

NEFSC Data Access Constraint: If data is stored on an internal NEFSC network, the requester may not have direct access to query the data unless they are also authorized for network access.

https://console.cloud.google.com/storage/browser/nmfs_odp_nefsc/PARR/FMRD/NCRP/27731

7 data files: 27731_ll_biosampling.csv 27731_ll_catch.csv 27731_ll_damaged_fish_otoliths.csv 27731_ll_length.csv 27731_ll_sta_eval_codes.csv 27731_ll_station.csv 27731_ll_otolith_length_prediction_data.csv Data extracted on 1/25/2018

Vessel locations, fishing operational data, and aggregate fish weight data are recorded using the FLDRS v3.1 software. Aggregate fish weights are initially recorded on data sheets, and subsequently summed in excel and entered into FLDRS software. Fish length data are captured from wireless measuring boards on handheld Allegro field PC's with windows mobile using CEWedge software. The length data are recorded with DataTrawler v1.0 software written in visual basic, which outputs the data in a Microsoft access database file (.accdb). Biological data are recorded by hand and entered on shore into excel before loading into the Oracle database. Star Oddi temperature-depth sensors are downloaded using the Sea Star software v7.02 and exported in a .dat file.

Vessel locations are taken from the vessel's GPS and recorded at ±0.0001°. Fish weights are taken using Merel motion compensated scales, and recorded ±0.1 kg for aggregate catch weights and ±0.01 kg for individual fish weights. Aggregate fish weights are for undifferentiated sexes for all species, except spiny dogfish weights are sex specific. Fish lengths are collected using Latitude 42 boards with Haglof wireless sensors, and they are recorded at ±1 cm precision. Temperature and depth data at the anchors are recorded with Star Oddi sensors with a precision of ±0.01m and ±0.01°C. Current flow is recroded at a ±0.01 m/s, direction ±0.01° true north, and temperature ±0.001°C. Fish are identified to the species level. Sex and maturity are characterized using the standard survey macroscopic schemes. Fish ages are reported to the nearest year with the same protocols and precison as in the bottom trawl survey database.

Data collection and auditing are ongoing. The status of auditing should be checked before the use of any data.

Hand entered data is confirmed while on the vessel and secondarily in post cruise processing. Limited data auditing procedures are available while at sea. Standardized data auditing to identify erroneous entries or extreme values are conducted during post cruise processing and import of data. Morphometric data are checked against standard species specific regressions. Some unique data types still have auditing procedures under development (e.g. current data).

Yes

Unknown

Yes

A few weeks to 6-9 months dependent on the data type and end users need. For some of the unusual data types the tables are still being designed, therefore these data remain incompletely available.

To Be Determined

Unknown

Archival of source data preserving unaltered collected data, Scheduled backups, Remote storage backups, Password protection

The survey data began to be collected in the field in April 2014. A dedicated database began to be designed for storing the data starting in fall 2014.

35948

Entity

LL_BIOSAMPLING

35949

Entity

LL_CATCH

51288

Entity

LL_DAMAGED_FISH_OTOLITHS

35950

Entity

LL_LENGTH

35952

Entity

LL_STATION

35951

Entity

LL_STA_EVAL_CODES

35953

Entity

OTOLITH_LENGTH_PREDICTION_DATA

gov.noaa.nmfs.inport:27731

Patricia Jones

2015-10-06T16:32:41

SysAdmin InPortAdmin

2026-03-04T19:17:17

2016-12-13

Northeast Fisheries Science Center

NEFSC

166 Water Street

Woods Hole

02543-1026

USA

(508)495-2000

https://www.nefsc.noaa.gov

8:00 a.m. to 4:30 p.m. Monday - Friday

1001

Public

2016-12-13

1 Year

2017-12-13