Peskaas - Timor
GUIDE TO SCRIPTS
Go through and run the scripts in this order:
- Trips_script.R
- Species_script.R
- Boattype_script.R
- gear_script.R
- effort_script.R
- PDS_script.R
- landings_script.R
- foodsale_script.R
- catchvalue_script.R
- Models.R Extra: appendix_script.R
Contents of scripts:
TRIPS
In this script:
- setting directory
- downloading data
- add stratification
- cleaning trip effort data
SPECIES
In this script:
- adding functional groups
- cleaning species and landing data
- adding missing catch weight data
- joining trips and landings df
- making graphs for species and functional group composition (also in relation to gear type)
BOATS
In this script:
- boat composition (canoe/motorboat)
- boat composition over time (canoe/motorboat/shore-based)
- length of different boat types
- composition of motor types
- composition of material of boats
- number of fishers active on different boat types
- duration of trip of different boat types
GEAR
In this script:
- gear composition (strata)
- gear use over time (strata + municipalities)
EFFORT AND CPUE
In this script:
- trip effort over time (strata together and in grid)
- seasonality of trip effort
- trip duration and active fishers over time (separately)
- calculating CPUE (standardise effort to 1 fisher and 1 trip hour)
- CPUE over time
- seasonality CPUE
PDS TRACKERS
In this script:
- downloading data from pds trackers
- adding strata to pds df using boats df
- plotting operation time
- plotting number and percentage of boats being tracked over time
- estimating and plotting number of TOTAL trips taken per week
- plotting seasonality of number of trips taken per week
LANDINGS
In this script:
- calculating VAC (average number of trips per month per boat)
- calculating total monthly landings using slightly modified equation from peskaas paper.
- plotting total monthly landings per area (together and grids)
- plotting seasonality of total monthly landings
- calculating landings per capita per year
- calculating average monthly landings per year
FOOD OR SALE
In this script:
- plot of destination of the catch (kg) (food/sale/both) over time
- plot of catch used for own consumption over time
- plot of destination of catch for different size groups
- plot of destination of catch of different species and functional groups
MARKET VALUE OF CATCH
In this script:
- calculate market value per kg catch
- plot value per area over time
- plot value per gear over time
- calculate how many trips have catches which consist 95% or more of one functional group/species
- plot value per functional group over time
- plot value per species over time
MODELS TO TEST COVID19 EFFECT
In this script:
- model with dependent variable "number of trips taken per week per boat"
- model with dependent variable "total monthly landings"
- model with dependent variable "market value per kg catch"