Can the successful return of a population after decades of hunting be a bad thing? It seems the answer depends on your perspective…or your job.
In Alaska, for example, sea otters were successfully reintroduced in 1960 after being nearly wiped out. Now, populations are booming and conservationists are thrilled. Many fishers, however, are not; they say the otters are unnecessary competition for shellfish.
Cape Cod is experiencing a similar problem: seal populations, once dwindling, have exploded, sparking debate between fishers, conservationists and beachgoers.
In 1991, researchers counted six seal pups on a particular island. On that same island in 2007, they counted 2,096. Exact overall population numbers aren’t known, but the National Marine Fisheries Service estimates that there are around 15,756 seals. That’s nearly three times what there was in 1999.
At the Outer Cape Seal Symposium last week, scientists, fishermen, captains of seal-watching boats and decision-makers gathered to discuss the issue. They focused on what we do and do not know and what, if anything, can or should be done about it. One of the biggest problems is that there isn’t enough data and the research is underfunded.
In the beginning, it was mostly fishers who complained about increasing seal populations as they competed for the same fish. Now they’re gaining allies as many others have started to worry about the associated increase in great white shark sightings. Sharks have found that this is the new hotspot for dinner, so as seal populations continue to increase, so will shark sightings.
But are those reasons enough to start a seal cull? That is likely to be debated for some time to come, particularly because many researchers say a cull won’t do any good without proper research.
In addition, seals have been federally protected under the Marine Mammal Protection Act since 1972. If the decision is made to thin the population, it will involve changing a federal law which won’t be an easy process. The process would be made more difficult by those who oppose it, like local tour-boat captains who are greatly benefiting from the increase in both seal and shark populations.
We’ll keep you posted as research continues and decisions are made.
To learn more, read some of these articles:
- Increase in Seal Population Results in Creation of New Consortium
- Human, Seal Conflict in New England
- Too many seals?
- Debate grows over what to do about seal resurgence
- Forecast for Cape seals: Lots of gray
Copyright © 2013 by Marine Science Today, a publication of Marine Science Today LLC.