+ - 0:00:00
Notes for current slide
Notes for next slide

Developing a common dataset
for multispecies model keyruns
using a reproducible workflow in R

WGSAM
11 October 2021

Sean M. Lucey, Andrew Beet, and Sarah K. Gaichas
Ecosystem Dynamics and Assessment
Northeast Fisheries Science Center

1 / 11

Georges Bank Multispecies Keyrun Project

  • New England Fisheries Management Council (NEFMC) is considering a shift to place-base, ecosystem-based fisheries management (EBFM)
  • Example Fisheries Ecosystem Plan (eFEP) will focus on the Georges Bank Ecological Production Unit (EPU)
  • NEFMC's EBFM Plan Development Team proposed a management procedure using ceilings and floors
  • An implementation of this procedure using the Hydra model was reviewed by the Center of Independent Experts in 2018

2 / 11

Georges Bank Multispecies Keyrun Project

  • Several concerns remained
    • What happens with all the species in the region under proposed management regime?
    • How well do multispecies models perform for assessment?
    • How does this compare to what we are currently doing?

3 / 11

Georges Bank MSKEYRUN project designed to address the first two concerns

Develop potential operating models for a management strategy evaluation (MSE) that could be used to address the third

Multispecies/Ecosystem modeling in the Northeast US

Modelling
4 / 11

Motivation for a common data set

  • Objectives will require the development (refinement) of several multispecies/ecosystem models
  • LOTS of data to sift through/ decisions to be made
  • Time spent organizing data is magnified when dealing with multiple species
  • Need to generalize solutions to common data issues
  • Did NOT want multiple versions of starting parameters

sift

5 / 11

Creating a reproducible workflow

  • Lots of decision points
    • Spatial domain
    • Temporal domain
    • Focal species
  • Easy to forget why or even what decisions were made
  • Create a repository to document decisions
  • Tracked progress with a kanban board software

oktobercat

6 / 11

Data, data, everywhere ...

Fisheries Independent

  • Survey Biomass
  • Length Composition
  • Age Composition
  • Diet/Consumption

Fisheries Dependent

  • Landings
  • Discards
  • Length Composition
  • Age Composition
Bigelow
7 / 11

Fisheries independent data resides on the survey database schema (SVDBS) while fisheries dependent data is split between the commercial fisheries and observer databases

Creating R Packages to pull/manipulate data

  • Turned older R scripts into packages
  • Focused on making more accessible with consistent data outputs
  • Survey data - Survdat
  • Commercial landings and discards - Comlandr
  • Commercial length data - MSCatch
Survdat
8 / 11

Creating a data repository

  • Some experience with Ecodata for our State of the Ecosystem Reports
  • Converted documentation repository into data repository
  • Data and documentation in one place (MSKeyrun)
9 / 11





MSKeyrun data repository walkthrough

10 / 11

Questions?

Thank you!

11 / 11

Georges Bank Multispecies Keyrun Project

  • New England Fisheries Management Council (NEFMC) is considering a shift to place-base, ecosystem-based fisheries management (EBFM)
  • Example Fisheries Ecosystem Plan (eFEP) will focus on the Georges Bank Ecological Production Unit (EPU)
  • NEFMC's EBFM Plan Development Team proposed a management procedure using ceilings and floors
  • An implementation of this procedure using the Hydra model was reviewed by the Center of Independent Experts in 2018

2 / 11
Paused

Help

Keyboard shortcuts

↑, ←, Pg Up, k Go to previous slide
↓, →, Pg Dn, Space, j Go to next slide
Home Go to first slide
End Go to last slide
Number + Return Go to specific slide
b / m / f Toggle blackout / mirrored / fullscreen mode
c Clone slideshow
p Toggle presenter mode
t Restart the presentation timer
?, h Toggle this help
Esc Back to slideshow