samples: Data: Numbers of 4 ray species caught in 2137 Irish Sea...

In SimonDedman/gbm.auto: Automated Boosted Regression Tree Modelling and Mapping Suite

Data: Numbers of 4 ray species caught in 2137 Irish Sea trawls, 1994 to 2014

Description

2244 capture events of cuckoo, thornback, spotted and blonde rays in the Irish Sea from 1994 to 2014 by the ICES IBTS, including explanatory variables: Length Per Unit Effort in that area by the commercial fishery, fishing effort by same, depth, temperature, distance to shore, and current speed at the bottom.

Usage

data(samples)

Format

A data frame with 2244 rows and 14 variables:

Survey_StNo_HaulNo_Year

Index column of combined Survey number, station number, haul number, and year

Latitude

Decimal latitudes in the Irish Sea

Longitude

Decimal longitudes in the Irish Sea

Depth

Metres, decimal

Temperature

Degrees, decimal

Salinity

PPM

Current_Speed

Metres per second at the seabed

Distance_to_Shore

Metres, decimal

F_LPUE

Commercial fishery LPUE in Kg/Hr

Effort

Irish commercial beam trawler effort 2012

Cuckoo

Numbers of juvenile cuckoo rays caught, standardised to 1 hour

Thornback

Numbers of juvenile thornback rays caught, standardised to 1 hour

Blonde

Numbers of juvenile blonde rays caught, standardised to 1 hour

Spotted

Numbers of juvenile spotted rays caught, standardised to 1 hour

Author(s)

Simon Dedman, [e-mail]

Source

http://oar.marine.ie/handle/10793/958

SimonDedman/gbm.auto documentation built on Feb. 9, 2024, 5:12 p.m.