BlackDrum2001 {FSAdata}

Biological data for Black Drum from Virginia waters of the Atlantic Ocean, 2001.

Description

Biological data (lengths, weights, ages (from otoliths), and sex) for Black Drum (Pogonias cromis) from Virginia waters of the Atlantic Ocean, 2001.

Format

A data frame with 141 observations on the following 9 variables.

year

Year of capture (all 2001)

agid

Unique identification number

spname

Species name (all “Black Drum”)

month

Month of capture

day

Day of capture

weight

Weight (lbs) – most are missing

tl

Total length (mm)

sex

Sex (female, male, and unknown)

otoage

Age (yrs; from otoliths)

Topic(s)

• Growth

• von Bertalanffy

• Weight-Length

Note

Used in the Introductory Fisheries Analyses with R book.

Source

Obtained directly from the Virginia Marine Resources Commission via Hank Liao. CSV file

Examples

data(BlackDrum2001)
str(BlackDrum2001)
head(BlackDrum2001)
plot(tl~otoage,data=BlackDrum2001)