Exam 21: A: Population Ecology on the Tracks of Wolves and Moose

Can a population exceed its carrying capacity?

How does a low predator population affect the population of a prey species?

How does a high predator population affect the population of a prey species?

Although many factors influence moose population density,predation is likely to be a density-__________ factor,and a harsh winter is likely to be a density-_________ factor.

The growth rate of a population is calculated from the ___ for that population.

With the current ability of people to travel widely and even relocate across the globe,what does the term population mean in the human context? How many human populations exist on the planet? Explain your answer.

What population is also correlated with the wolf-moose population cycles observed on Isle Royale?

A report that documents all the species (plants and animals)in an area but does not include the environment describes

Which is NOT a biotic factor that could affect a population?

In predator-prey relationships,scientists are interested in which level of organization?

You are studying two populations of rabbits living in similar habitats.The first population has 1000 individuals/km²,and the second population has only 100 individuals/km².You notice that when factor A is present,half the rabbits die in each population.When factor B is present,20% of the first population die and none of rabbits in the second population die.Which factor is density dependent and which factor is density independent? Explain your answer.

From studies of predator prey relationships,it could be predicted that an increase of zebra on a savannah would be followed by a subsequent

How does a low prey species population affect the population of a predator species?

Label each of the following with "D" for density-dependent or "I" for density-independent factors. A) _____ the presence of a predator reduces prey populations by 50% B) _____ competition for the same food resources C) _____ pollution in a river wipes out 50% of fish population D) _____ a winter storm wipes out 75% of a population E) _____ a flood drowns 80% of mammals

Which population would most likely resemble a random distribution pattern?

Place the population distribution pattern in order from most to least frequently encountered by ecologists.

Which behavior would most likely result in a uniform distribution pattern?

Put the following in order from simplest to most complex.

Scat is _____.

You have two species of Anolis lizard on an island.They both eat small insects.Because of favorable weather,one species reproduces exponentially.What effects will this have on the populations of both Anolis species and on the prey species?