lwdata: Length Weight Data This is a data set of extracted specimen...

In rooperc4/GroundfishCondition: Calculates condition indices for groundfish based on length-weight residuals

Description

Length Weight Data This is a data set of extracted specimen data from RACEBASE The example data set included in this package is called lwdata and is specimen data (length and weight specimens) for all species where this data was collected on RACE bottom trawl surveys. The data was initially extracted from RACEBASE tables (including HAUL, SPECIMEN, SPECIES and STRATA tables).

Usage

lwdata

Format

A data frame with 4475 rows and 12 variables:

REGION

Trawl survey region; GOA, BS, AI

CRUISE

Cruise identifier

VESSEL

Fishing vessel identifier

HAUL

Haul number

START_TIME

Date and time of haul

INPFC_AREA

INPFC area identifier

STRATUM

Strata where haul was conducted

STATIONID

Unique station idenfier

BOTTOM_DEPTH

Mean depth of tow

START_LATITUDE

Latitude of haul start

START_LONGITUDE

Longitude of haul start

SPECIMENID

Specimen number

SPECIES_CODE

Species identifier

SPECIES_NAME

Latin name of species

COMMON_NAME

Common name of species

SEX

Sex of specimen; male = 1, female = 2, unknown = 3

LENGTH

Specimen length in mm

WEIGHT

Specimen weigth in g

CATCH

Catch-per-unit-effort in kg/ha

...

Source

RACEBASE

rooperc4/GroundfishCondition documentation built on May 4, 2019, 1:22 p.m.