SSplots (version 0.1.2)

SSplots_EPI: Stock-Catch-Status Plot or Catch by Stock Status Graph (Jayasankar et al. (2021))

Description

This function provides stock status plots to see the typical transition from developing through fully exploited to over exploited for each resources as per the criteria used by Jayasankar et al (2021) to interpret the status of fishery resource.

Usage

SSplots_EPI(data,lower.lt,upper.lt, tsplots, MA)

Arguments

data

dataset

lower.lt

lower limit

upper.lt

upper limit

tsplots

time series plot

MA

moving average

Details

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

Developing: Year of landings < year of max landings AND landings < 20 percent of max landings

Fully Exploited: Year of landings is between 20-80 percent of max landings

Over Exploited: Year of landings > year of maximum landings AND landings < 20 percent of
maximum landings OR landings > 80 percent of maximum landings

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.

5) Jayasankar J, and Eldho Varghese, Shubhadeep Ghosh, Muktha M, Prathibha Rohit, Abdussamad E M, Dineshbabu A P, Laxmilatha P, Ramachandran C, Shinoj P, Kavitha J, Vivekanandan E and Sreepriya V (2021) Environmental Performance Index (EPI) of Indian Marine Fisheries: A Perspective. ICAR-Central Marine Fisheries Research Institute, Kochi. ISBN 978-9382263-56-2.

Examples

if (FALSE) {
library (SSplots)
data("SampleData")
SSplots_EPI(data=SampleData,lower.lt=20,upper.lt=80, tsplots=FALSE, MA=FALSE)
}