Ecosystem Carrying Capacity

Carrying Capacity and Aquatic Ecosystems

Multiple Choice

From days 9-13, which of the following is true regarding Species 5 in this ecosystem?

• Birth rate and immigration was greater than death rate and emigration

• Birth rate and immigration were equal to death rate and emigration

• Birth rate and immigration were less than death rate and emigration

Multiple Choice

What is the carrying capacity for species 5 in this ecosystem?

• 500

• 1000

• 2000

Multiple Choice

When the carrying capacity is reached in this ecosystem, which of the following is true?

• Birth rate and immigration was greater than death rate and emigration

• Birth rate and immigration were equal to death rate and emigration

• Birth rate and immigration were less than death rate and emigration

Multiple Choice

After a 75 year absence, the grey wolf was reintroduced to Yellowstone national park in 1994. The deer population had grown very large during the wolf’s absence. How do you think that the reintroduction of the wolf affected the deer population’s carrying capacity?

• The deer population carrying capacity increased due to more energy available in the ecosystem

• The deer population carrying capacity decreased due to the introduction of a new limiting factor introduced into the ecosystem

• The deer population remained the same

Open Ended

In which zone do you think there is more oxygen, the photic zone or the aphotic zone? Why?

Multiple Choice

As demands on freshwater sources increase, the use of desalination processes to remove salt from ocean water is increasing. A concern of desalinating water is the large amounts of recovered salts that are returned to the ocean. Which of the following describes the most likely impact of desalination on the surrounding ocean environment?

• Methane gas would pollute the ocean environment

• Alteration in ocean salt levels would cause loss of species and unbalanced populations in marine food webs.

• Nonrenewable resources in the ocean environment would become depleted

• Increased levels of salts and minerals in the ocean would result in overpopulation