EffortStu: Calculates Fishing Effort for Sturgeon Trammel Nets.

In jasondubois/sportfish: Methods and Function for CDFW Sportfish Unit Data

Description

EffortStu will calculate fishing effort for each net set given fishing times and (trammel) net length. Fishing effort is the denominator when calculating CPUE (or catch per unit effort).

Usage

EffortStu(data, sStart, sEnd, rStart, rEnd, netLength)

Arguments

data	Dataframe containing (at least) net set & net retrieval time and net length (typically in fathoms).
sStart	date-time object. Time first bit of webbing entered water.
sEnd	date-time object. Time last bit of webbing entered water.
rStart	date-time object. Time first bit of webbing pulled from water.
rEnd	date-time object. Time last bit of webbing pulled from water.
netLength	Numeric value given length of net fishing (e.g., 100 fathoms).

Value

list with the following elements:

• Effort (fishing effort)

• TimeFished (in hours; total fishing hours)

• SoakTime (in hours)

• TimeUnit (characater)

• NetLength (the variable in data containing net length)

Examples

# coming soon.

jasondubois/sportfish documentation built on July 3, 2020, 1:01 p.m.