An abundance of fish, for example, is not always a sign of health in a fishery: the profusion of one species may simply be a temporary consequence of the depletion of its predators.

• 例如，鱼类数量过多，在渔业上并不总是状况良好的表现：一个物种的丰富，可能仅仅是其猎食者衰减的暂时结果。