Who says horror stories can’t have happy endings? After nearly two years, the Texaco East Pond has been restocked and is open to fishing again. The popular local fishing hole was closed after an angler reported an unusual catch on June 23, 2015. This fishy find was in fact a black bullhead – a species of catfish – and the ecological impacts it had on the pond were devastating.
How many fish can be sustainably harvested from an Alberta lake? To answer that question, you need a basic understanding of biological economics. Let’s start by asking some straightforward questions:
- How many fish are in a lake?
- How many fish do you want to be there?
- What is the annual interest rate (the surplus population growth rate)?
- How necessary or important is reinvestment of fish back to the population?