Exam 58: Conservation Biology

The American redstart (Setophagaruticilla)is in serious decline.Scientists have been able to correlate health and breeding success to levels of ¹³C in their blood (a chemical signature indicating the source of their diet).Birds with lower levels of ¹³C in their blood return to their spring breeding ground sooner,weigh more and produce more offspring.Based on this,what would you expect to find in the wintering grounds of the American redstart? Check all that apply.

A conservation group is deciding what land to preserve.Why might they want to consider an area of land where the ecosystem is partially damaged by a logging contract that cannot be overturned?

One of the important reasons for maintaining biodiversity is to

Which of the following is a recognized way that the processes of natural selection and speciation may mitigate the concerns of conservation biologists?

In the last 20 years one concern of scientists who study amphibians is that

Sea otters have been used as an example of the "Keystone Species" concept.This means that sea otters

While reading an online science magazine,you come across an article on declining turtle populations across the globe.Based on the graph,what would you guess are the two biggest factors in the decline? Choose two.

A small island has stable populations of plants and animals,including one species of hawk but no other large predators.A ship docks at the island,and the ship's cat escapes.If the cat was pregnant,what do you think the sailors are likely to find if they return ten years later?

When New York City was given a choice to make regarding its drinking water