"Cod: Over 35,000 fishermen and plant workers from over 400 coastal communities became unemployed.[..] federal government intervened, [..] income assistance [..] retraining of workers [..] Newfoundland has since experienced a dramatic environmental, industrial, economic, and social restructuring, including considerable emigration,[18] but also increased economic diversification, an increased emphasis on education, and the emergence of a thriving invertebrates fishing industry"

and the present status 20 years later is "recovering" up to possibly 10% of earlier levels - nothing like the million years to recover of the previous link.

Change happened, people adjusted to it in many ways. That sounds resilient, not fragile.