Overfishing off the New Zealand coast removed large adult predator fish from the population. In response, the sea urchin population increased rapidly and depleted the kelp forests that protected other species. How did the age-structure of predator fish impact the biodiversity in the region?Kelp forests could not provide shelter for the young predator fish.Fewer predator fish decreased other prey species that lived in the region.The younger predator fish were not able to control the sea urchin population.The age structure of the sea urchin population made them more aggressive predators.

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26-01-2022
Biology

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Overfishing off the New Zealand coast removed large adult predator fish from the population. In response, the sea urchin population increased rapidly and depleted the kelp forests that protected other species. How did the age-structure of predator fish impact the biodiversity in the region?Kelp forests could not provide shelter for the young predator fish.Fewer predator fish decreased other prey species that lived in the region.The younger predator fish were not able to control the sea urchin population.The age structure of the sea urchin population made them more aggressive predators.

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sandlee09 sandlee09 · Answer 1 · 2022-01-31T12:20:52+01:00

Given what we know, we can confirm that the new age structure of the predator fish impacted biodiversity in the region given that the younger predator fish were not able to control the sea urchin population.

What evidence is given to support this conclusion?

The question states that all adult predator fish were removed.
Then it states that in response, the sea urchin population increased and got out of control.
The sea urchin population then caused a sharp decrease in biodiversity.
Therefore, we can say that this is because the younger predator fish were not enough to keep the sea urchin population controlled.

Therefore, given that the question tells us that after the removal of adult predator fish in the area, the population of sea urchins grew to dangerous levels and reduced the biodiversity of the area, we can confirm that this is due to the younger predator fish not being able to control the sea urchin population.

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