Which of the following would have the greatest negative impact on the net reproductive rate of the beaver population shown in Table 56.1 in your textbook?

Demography can BEST be described as the study of:

Which of the following would animals would MOST likely exhibit a Type III survivorship curve?

For an animal that lives 3 years at maximum, will the next generation of the population grow, decline, or stay the same if l_xm_x is 0.7 for age class 0-1, 0.3 for age class 1-2, and 0.3 for age class 2-3?

In a life table, what is d_x?

                        D)  the number alive at the start of the year

If a population is growing, it is safe to assume that R₀ is:

A population growing exponentially:

What is carrying capacity?

Which of the following is most likely to be a density-dependent factor?

a contagious viral disease

The intrinsic rate of increase is when r:

The ______ growth equation describes population growth when resources are limited.

According to the logistic growth equation, the growth of a population will ______ as it approaches its carrying capacity.

Why are there few examples of logistic growth observed in nature?

Which of the following would MOST likely be a K-selected species?

For a density-independent factor, mortality ______ with population density

f r is 1, a population will exhibit zero population growth.

The competitive ability of most r-selected species is weak.

Differences in the beak sizes of finches in the Galapagos Islands is an example of:

Cape May warblers feed at the top of spruce trees, while Myrtle warblers feed at the lower regions of spruce trees. This is an example of:

Indirect competition between two species that are both consuming the same limited resources is called:

Male elk fighting to mate with a female would be an example of:

Connell's experiments with barnacle species on the rocky intertidal zone showed that:

Which of the following best describes the competitive exclusion principle?

Competition for resources among land plants is generally greater than among land animals.

According to the intermediate disturbance hypothesis:

The time hypothesis for the polar-equatorial gradient of species diversity proposes that:

One way to distinguish between communities is to:

The hypothesis for the polar-equatorial gradient of species diversity stating that species diversity can be influenced by factors such as temperature and rainfall is the:

The area hypothesis explains why there is greater species richness in the open ocean than in tropical nearshore waters.

Species richness varies along latitudinal gradient, with richness lowest in polar areas, intermediate in tropical areas, and highest in temperate areas.

Community change occurring after clearing a forest is:

Each phase of succession is called a:

Organisms colonizing an area after a glacial retreat often have the ability to fix nitrogen gas and thereby add it to the soil. This is an example of:

The gradual change in species composition and community structure is:

Early colonists of a habitat may exclude newer colonists in a process called:

The colonization of a geographic region that has been devastated by a volcanic eruption is:

The end point of succession is:

In the tolerance model of succession, species may be affected by previous colonists, but they do not require them.

False

Succession does not occur in aquatic ecosystems because these ecosystems lack soil.

Production efficiency is the:

Organisms that receive energy from eating the dead remains or waste products of animals and plants are:

Primary producers:

Which the following would be an example of detritus?

Which of the following could be used to describe deer?

In which ecosystem would you be most likely to observe an inverted pyramid of biomass?

Fish often contain harmful levels of mercury because they generally occupy the highest trophic levels in aquatic ecosystems. The concentration of mercury in fish would be an example of:

The amount of available energy decreases at each higher trophic level.

Hummingbirds have a higher production efficiency than caterpillars.

Net primary production is:

The nutrient that is most scarce in relation to an organism's need is called a:

n aquatic systems, the most important nutrients affecting primary production are:

Which ecosystem has the greatest NPP?

The secondary production of ecosystem could be determined by measuring the biomass gain of heterotrophs and decomposers.

What does "biodiversity crisis" refer to?

How did the Illinois prairie chicken recover from its extinction vortex?

The Allee effect describes the:

The brown tree snake that has decimated native bird populations on the island of Guam would be an example of a(n):

The extinction of the flightless dodo bird was due to a combination of:

In a population of elephant seals with 95 males and 95 females, what is the effective population size if only 5 dominant males breed with females?

Species moved by humans from a native location to another location are called invasive species.

An endemic species:

Which of the following is an advantage of movement corridors?

If you wanted to capture the public's interest in conservation and raise awareness and enthusiasm, it would likely be most effective to adopt a(n):

The use of living organisms to clean up polluted habitats is known as:

Sea stars of the rocky intertidal zone of California prey on mussels and thereby prevent mussel populations from exploding and outcompeting other species. Sea stars would be an example of a(n):

Why are circular nature reserves generally preferable to oblong reserves of the same size?

A conservation strategy that focuses on protecting a particular umbrella species would be an example of the ______ approach.

The SLOSS debate refers to the debate over whether it is preferable to:

In rehabilitation restoration, conservationists seek to return a habitat to its condition prior to disturbance.

A species that has a large effect in a community because of its large biomass or high abundance is referred to as a keystone species.

What is "r"?

1) Habitat destruction or modification

2) Introduce invasive species

3) Habitat Fragmentation

4) Gaseou "pollutants"

5) Disease

1) They disrupt the food web

2) They disrupt the biogeochemical cycles

3) They disrupt tourism and recreation

1) Photosynthesizers-Solar Energy

2) Herbivores-Tissues of Primary Producers

3) Primary Carnivores-Herbivores

4) Secondary Carnivores-Primary Carnivores

5) Omnivores-Several Trophic Levels

6) Detritivores-Dead bodies and waste products of other organisms.

1) Scientific study

2) Distribution and abundance of organisms

3) Interactions among organisms and between organisms and transformation and flux of energy and matter

1) Competitive exclusion

2) Niche portioniong

3) Character displacement

1) Flow of energy

2) Cycling of nutrients and water

3) Human impact

Batrachochytrium dendrobatidis; chytrid fungus that causes the thickening of the skin which keeps amphibians from absorbing water.

It is part of their heritage

1) increased CO2 and CH4

2) habitat modification

3) N and S deposition

1)Biotic factors; species interactions

2)Abiotic factors; Enviromental effects