Exam 19: Population Ecology

The red-cockaded woodpecker,an endangered species,is dependent upon ________ for maintenance of its source habitat.

Type I survivorship curves are typical of species that exhibit ________.

Please read the following scenario to answer the following questions. In May 2014, the European Union (EU) published a report of population structure and aging data that described growing trends of low birth rates and longer life expectancies in the EU. In their report, the EU described that, due to these trends, some EU member states are beginning to demonstrate a population structure with many much-older individuals. -Why might this changing population structure be a concern for EU leaders?

In most developing countries,________.

In an ideal,unlimited environment,what shape does a population's growth curve most closely resemble?

An unexpected freeze that kills a population of chipmunks is an example of ________.

Integrated pest management ________.

Which of these best describes Type III survivorship?

The Endangered Species Act aims to help protect species that ________.

Please read the following scenario to answer the following questions. Michigan's Isle Royale is an island located in Lake Superior that is 45 miles long and 9 miles wide. Ecologists estimate that the moose population on the island has been there since around 1900. The wolf population on the island, on the other hand, has been there only since the winter of 1949. Weather conditions had to be calm and cold enough for the lake to freeze and the first wolves to make the passage over to the island. When the wolves arrived, they were greeted with a large moose population that had no predators. The moose population was at a dangerously high level, but was kept in check by the arrival of the wolves. This "harmonious" pattern continued for at least 20 years. In 1982, the wolf population suddenly crashed. The problem was a new canine virus. This virus surfaced around the world in 1978 and spread rapidly in about 6 months. Infected animals can survive, but they have to be treated immediately. Ecologists hypothesized that the virus arrived on the island carried on the shoe of a human traveler. The wolf population decreased from 50 to 14 individuals in a year. While the wolf population dropped, the moose population increased. However, the winter of 1996 was extremely harsh and the moose population experienced a major crash. More than 500 animals died during the winter months, reducing the population to less than 800 animals. -The harsh winter that led to the death of many moose in 1996 is an example of ________.

The use of the Indian mongoose to control rat populations ________.

Kudzu,an Asian vine introduced to the United States in the 1930s as a means to control erosion,is referred to as "the plant that ate the South" because it grows so fast and overtakes most plant species in its path.A recent and unusual way that some people are using to control kudzu growth is to allow goats to graze their land and eat the kudzu,roots and all.This is considered by some to be the most environment-friendly way to eliminate this invasive vine.How can we best describe the goats in this situation?

Please read the following scenario to answer the following questions. Michigan's Isle Royale is an island located in Lake Superior that is 45 miles long and 9 miles wide. Ecologists estimate that the moose population on the island has been there since around 1900. The wolf population on the island, on the other hand, has been there only since the winter of 1949. Weather conditions had to be calm and cold enough for the lake to freeze and the first wolves to make the passage over to the island. When the wolves arrived, they were greeted with a large moose population that had no predators. The moose population was at a dangerously high level, but was kept in check by the arrival of the wolves. This "harmonious" pattern continued for at least 20 years. In 1982, the wolf population suddenly crashed. The problem was a new canine virus. This virus surfaced around the world in 1978 and spread rapidly in about 6 months. Infected animals can survive, but they have to be treated immediately. Ecologists hypothesized that the virus arrived on the island carried on the shoe of a human traveler. The wolf population decreased from 50 to 14 individuals in a year. While the wolf population dropped, the moose population increased. However, the winter of 1996 was extremely harsh and the moose population experienced a major crash. More than 500 animals died during the winter months, reducing the population to less than 800 animals. -What most likely happened when the wolves first arrived on the island?

The intentional release of a natural enemy to attack a pest population is called ________.

When did male fur seals reach carrying capacity?

Competition among individuals of the same species is ________ competition.

What will be the approximate shape of the age-structure diagram of a rapidly increasing population?

A study of the human ecological footprint conducted by the World Wildlife Fund in 2008 shows that ________.

Please read the following scenario to answer the following questions. Michigan's Isle Royale is an island located in Lake Superior that is 45 miles long and 9 miles wide. Ecologists estimate that the moose population on the island has been there since around 1900. The wolf population on the island, on the other hand, has been there only since the winter of 1949. Weather conditions had to be calm and cold enough for the lake to freeze and the first wolves to make the passage over to the island. When the wolves arrived, they were greeted with a large moose population that had no predators. The moose population was at a dangerously high level, but was kept in check by the arrival of the wolves. This "harmonious" pattern continued for at least 20 years. In 1982, the wolf population suddenly crashed. The problem was a new canine virus. This virus surfaced around the world in 1978 and spread rapidly in about 6 months. Infected animals can survive, but they have to be treated immediately. Ecologists hypothesized that the virus arrived on the island carried on the shoe of a human traveler. The wolf population decreased from 50 to 14 individuals in a year. While the wolf population dropped, the moose population increased. However, the winter of 1996 was extremely harsh and the moose population experienced a major crash. More than 500 animals died during the winter months, reducing the population to less than 800 animals. -The virus introduced to the island in 1982 that reduced the wolf population is an example of ________.

Which of these best describes Type II survivorship?