SSplots_pauly {SSplots}

Stock-Catch-Status Plot or Catch by Stock Status Graph (Pauly et al., 2008)

Description

This function provides plots to see the typical transition from undeveloped through fully exploited, to collapsed for each resources as per the criteria used by Pauly et al (2008) to interpret the status of fishery resource

Usage

SSplots_pauly(data,lower.lt,upper.lt, tsplots)

Arguments

data

dataset

lower.lt

lower limit

upper.lt

upper limit

tsplots

time series plot

Details

**Status of fishery** ⁠ ⁠ **Criterion Applied**

Undeveloped: ⁠ ⁠ Year< max landings AND landings < 10 percent of max value

Developing:⁠ ⁠ Year < max landings AND landings is between 10-50 percent of max value

Fully exploited:⁠ ⁠ Landings > 50 percent of max value

Overexploited:⁠ ⁠ Year > max landings AND landings is between 10-50 percent of max value

Collapsed:⁠ ⁠ Year > max landings AND landings< 10 percent of max value

Value

This function returns two plots one with "number of stocks by status" and the other one is "catch by stock status" apart from the time seriers plots.

Note

Note: tsplots=TRUE for generating the time series plots for each resources. In that case it is advisable to set a working directory and the number of time series plots generated will be equal to the number of resources.

References

1) Grainger RJR and Garcia S (1996) Chronicles of marine fisheries landings (1950-1994): trend analysis and fisheries potential. FAO Fisheries Technical Paper 359, 51 p.

2) Kristin Kleisner and Daniel Pauly (2015) Stock-Status Plots (SSPs), https://www.seaaroundus.org/stock-status-plots-method/ (accessed on 28.02.2023)

3) Pauly D, Alder J, Booth S, Cheung WWL, Christensen V, Close C, Sumaila UR, Swartz W, Tavakolie A, Watson R and Zeller D (2008) Fisheries in Large Marine Ecosystems: Descriptions and Diagnoses. pp. 23-40 In: Sherman K and Hempel G (eds.), The UNEP Large Marine Ecosystem Report: a Perspective on Changing Conditions in LMEs of the World’s Regional Seas. UNEP Regional Seas Reports and Studies No. 182, Nairobi.

4) Sherman K and Hempel G, editors (2008) The UNEP Large Marine Ecosystem report: a Perspective on Changing Conditions in LMEs of the World's Regional Seas. UNEP Regional Seas Reports and Studies No. 182, United Nations Environment Programme, Nairobi. 852 p.

Examples

library (SSplots)
data(SampleData)
SSplots_pauly(data=SampleData,lower.lt=10,upper.lt=50, tsplots=FALSE)