May 26, 2017 — In his famous 1968 essay “The Tragedy of the Commons,” biologist Garrett Hardin singled out ocean fishing as a prime example of self-interested individuals short-sightedly depleting shared resources: “Professing to believe in the inexhaustible resources of the oceans,’ they bring species after species of fish and whales closer to extinction.”
The whales have actually been doing a lot better lately. Fish in general, not so much.
Then there’s the Maine lobster. As University of Maine anthropologist James M. Acheson put it in his 2003 book “Capturing the Commons: Devising Institutions to Manage the Maine Lobster Industry”:
“Since the late 1980s, catches have been at record-high levels despite decades of intense exploitation. We have never produced so many lobsters. Even more interesting to managers is the fact that catch levels remained relatively stable from 1947 to the late 1980s. While scientists do not agree on the reason for these high catches, there is a growing consensus that they are due, in some measure, to the long history of effective regulations that the lobster industry has played a key role in developing.”
Two of the most prominent and straightforward regulations are that lobsters must be thrown back in the water not only if they are too small but also if they are too big (because mature lobsters produce the most offspring), and that egg-bearing females must not only be thrown back but also marked (by notches cut in their tails) as off-limits for life. Acheson calls this “parametric management” — the rules “control ‘how’ fishing is done,” not how many lobsters are caught — and concludes that “Although this approach is not supported by fisheries scientists in general, it appears to work well in the lobster fishery.”