What do you do?
I use computer fisheries models
to see how ecosystems and fish interact. I look at when and how fish
populations have changed in the past and use these clues to try and
predict the future. You could call it “back to the future.”
What is a fisheries
model?
Fisheries models use math to
describe the biology of fish. You could relate it to tracking your bank
account with debits (mortality), credits (recruitment) and interest
(growth) but of course life is much more complex and chaotic than a
bank account.
Are there different
kinds of models?
Single species models and ecosystem
models are both used. Some single species models can be run on a simple
spreadsheet program like Excel. Other single species models are very
complex and have lots of advanced math involved that is pretty darned
exotic. Ecosystem models are very complex and some need a super computer
to run them because they have so many calculations.
How can fisheries models
help fisheries become sustainable?
Models can be used to avoid
catastrophes. Models can also be used to look at different trade-offs
and scenarios. If we fish one species, what happens to its’ other
predators, its’ prey and its’ competitors? Models help show
how trade offs might happen so we can interact with oceans in a way
most people are happy with.
What can youth do to
make a difference to the future of fisheries?
Get out on and in the water
on a boat, a surfboard or in SCUBA gear and experience the world fish
live in. Join a group so you can learn more about the aquatic environment
(volunteer as a shore-keeper, take a marine course, get a job on a fish
boat). Find out how other people interact with fish and the ocean. I
have found it to be most rewarding to talk to someone with a different
point of view because they might show you how to see the world in a
new way. Not surprisingly, many people are much more willing to listen
to you if you listen to them. When people are listening to you then
you ARE making a big difference.