why might an overfished stock never recover to its original population level?

What has happened to decline the population of Katy Prairie chicken?

Can a Native Predator Species Adapt Rapidly to anIntroduced Prey Species?

Basal species in a food web feed on other species. True False

Which is a keystone species a frog or grasshopper?

Why are species of birds that nest in grasslands declining in north America? What could be done to slow or stop this decline?

What is the relationship between a fraction of islands occupied by a species and carrying capacity?

Competition is often an important driver of early succession, while facilitative interactions tend to play a more dominate role later in succession.   True  False

How did the introduction of mammals in New Zealand changed predation in the forest ecosystem?

New Zealand snapper populations were found to be under the influence of genetic drift, suggesting overfishing was still an issue for them, despite the New Zealand fisheries estimating their total population size to be over 3 million. Which of the following is the best explanation for this observation?     A) Pelagic fish, like the New Zealand snapper, often only have a few reproductive individuals, therefore their effective population size is actually much smaller than the total population size.     B) Pelagic fish, like the New Zealand snapper, often have an equal sex ratio which affects the number of breeding individuals.     C) Pelagic fish, like the New Zealand snapper, often have disassortative mating which affects the number of breeding individuals.     D) Pelagic fish, like the New Zealand snapper, often have assortative mating which affects the number of breeding individuals.