1. EwE Economics Beth Fulton 2012
Start the story of qualitative analysis in the 12th century with a gentle man called Fibonacci. Then move to Malthus, Darwin, Lotka and Volterra then get into the nitty gritty of qualitative modelling
EwE Economics
Beth Fulton
2012

2. Simple bioeconomics
Costs and prices
Prices x
Costs x

3. Spatial bioeconomics
Costs and catch in space = Ecospace

4. Spatial bioeconomics Costs increased, but stocks high
Differential implications of management
Costs increased, but stocks high
Costs unchanged, but stocks depleted

5. Value Chains
Economic chains (potential amplification and knock on effects)

6. Value Chains
Basic chain idea:

7. Value Chains
In business theory has more aspects (not all covered in the EwE tool)

8. Tasmanian Southern Rock Lobster (SRL)
SRL Fishers
(3 types)
Fish receivers
Interim Transport
Primary wholesale
Secondary wholesale
Export Destination
Consumers
≈5%
Tasmanian retailers 2%
Tasmanian consumers
Tasmanian Restaurants 3%
Bass Strait ferry 5%
Melb.
fish market
Interstate retailers
Burnie airport
Lease quota fishers
30%
Australian mainland consumers
20-40 %*
Pro-cessors
(North & South)
70%
Quota owner operators
Sydney fish market
Interstate Restaurants
Chinese consumers
Hobart airport
Day fishers
Chinese Importer
50-70 %*
Interim storage
Vietnam
20%
Re-packaging
≈10%
Philippines
Tasmanian Southern Rock Lobster (SRL)
* Australian sales and export figures vary by year
By: Anna Farmery, Ingrid van Putten and Bridget Green (2012)

9. Torres Strait Tropical Rock Lobster (TRL)
TRL Fishery
(3 sectors)
TRL fisher types
Fish receivers (drop off points)
Interim storage
Airfreight to processors
Export Destination
Consumers
Return to outer island
Australian (mainland) consumers
17 t live
Casual fishers
35%
TIB (indigenous) fishers
Freezer & pond storage (on island) 5%
37%
Part –time fishers
American importer
American consumers
Full-time fishers
65%
Airfreight & Seafreight
45%
383 t tails
Return to Thursday Island
Freezer & pond storage (Thursday or Horn Island)
Cairns processors
Operating out of Thursday Island
45%
50%
TVH
(non-indigenous) fishers
37%
Operating out of Queensland
55%
Chinese Importer
Chinese consumers
Return mother-ship then Cairns
Processor pick-up Cairns wharf
320 t live
PNG fishers
25%
Return to PNG
Torres Strait Tropical Rock Lobster (TRL)
Adapted from Hutton and van Putten et al (2012)

10. Value Chains - Ecopath
Ecopath (& Ecosim) tool

11. Value Chains – Defaults
Default chain available (aggregate for the whole system)

12. Value Chains - Chains
Can define own chains (multiple chains)

13. Producers Parameterise producer economic values Products ($/t)
Tickets ($/effort)
Revenue ($/effort)
Wages ($/t or %)
Taxes and Subsidies ($/t)
Workers (#/t)
Owners (#/t)
Social dependency (#/worker)

14. Processors Parameterise processor economic values Products ($/t)
Wages ($/t or %)
Taxes and Subsidies ($/t)
Workers (#/t)
Owners (#/t)
Social dependency (#/worker)

15. Transport Parameterise transport economic values = distributors
Products ($/t)
Wages ($/t or %)
Taxes and Subsidies ($/t)
Workers (#/t)
Owners (#/t)
Social dependency (#/worker)

16. Markets Parameterise market economic values Products ($/t)
Wages ($/t or %)
Taxes and Subsidies ($/t)
Workers (#/t)
Owners (#/t)
Social dependency (#/worker)

17. Consumers
Easy bit….

18. Spreadsheets Or component entry All the same parameters
Component type at a time

19. Value Chains
Static outcome based on parameters & ecopath

20. Value Chains – Through time
Dynamic outcome based on parameters & ecosim
No ecospace yet
Revenue
Profits
Costs

21. Value Chains – Example

22. Value Chains – Example

23. Thank you
Explain why important - what has climate change shown as already? Fisheries is streets ahead in thinking about co-management, adaptive management and tools to support that.