From 385ec059583da493b324182eebad4c29a8af9269 Mon Sep 17 00:00:00 2001 From: kellijohnson-NOAA Date: Tue, 8 Mar 2022 08:56:19 -0800 Subject: [PATCH] top20(MSY): add rationale part of #17 where decisions need to be made about subscripts --- inst/extdata/top20.txt | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/inst/extdata/top20.txt b/inst/extdata/top20.txt index 57d6253..7175dad 100644 --- a/inst/extdata/top20.txt +++ b/inst/extdata/top20.txt @@ -40,13 +40,12 @@ Rationale: Many models use the term index for a survey and CPUE for fishery-depe Alternatives: catch rate, index of abundance, standardized fishery catch time series Range of possible values: 0--Inf Units: -Rationale: -Alternatives: MSYproxy -Range of possible values: -Units: biomass/metric tons or numbers -Instantaneous mortality rate (Z): Z is probably the most universally used notation for a given parameter across all disciplines for models that include mortality, how did we agree on this and when? -Examples: -Rationale: +Maximum Sustainable Yield (MSY): A maximum level of yield that can be continuously taken from an exploited stock without long-term depletion under average environmental conditions. It can be defined given biological parameters (e.g., natural mortality and stock productivity) or using proxies (e.g., the maximum yield at 40% of unfished biomass). Units depend on units of catches. +Examples: +Rationale: Many management frameworks are based on calculations of MSY despite difficulty in its estimation. Metrics such as fishing rate at MSY should be abbreviated using all upper case letters but this is not common practice as of yet. For example, sometimes you will see F_msy or some derivative thereof. +Alternatives: msy, MSYproxy +Range of possible values: 0--Inf +Units: mt, numbers Alternatives: Range of possible values: lower bound of 0 Units: mortality per year (yr-1)