Exam 52: Population Ecology

One measure for the value of the patch was given by the long-term contribution of a fragment to colonization events in the network.How do the properties of a landscape and the properties of a species affect the value of a patch?

If 40 individuals were alive in 1921 and 856 existed in 2007,what is r?

The definition of a generation is

Figure 52.1 -In the figure above,which of the following survivorship curves implies that an animal may lay thousands of eggs,of which a regular number die each year?

If 60 snow geese were alive in 1926 and 856 existed in 2001,what is r?

Figure 52.1 -In the figure above,which of the following survivorship curves implies that an animal may lay thousands of eggs,of which only a few will survive to reproduce?

Conservationists will take snow geese off the endangered species list when the population hits 10,000.If populations are sustaining growth at r = 0.088 and the population in 2001 is 3000 individuals,in what year will snow geese be taken off the endangered species list?

In 1987,there were only 22 condors (birds)in the wild because of habitat destruction ;all were brought to zoos and breeding centres for captive breeding.In 1991,the first condors were re-introduced into the wild.To determine if the population of wild California condors is increasing,which methods would best be suited to gathering condor population size/density information?

Figure 52.6 -Based on the figure above,which of the following statements correctly interprets the data?

Suppose researchers marked 800 turtles and later were able to trap a total of 300 individuals in that population,of which 150 were marked.What is the estimate for total population size?

Projections for Earth's human population by 2050 that were made in 1992 were much higher than those made in 2002.Which of the following did NOT likely contribute to this change in projection?

Figure 52.5 -In the figure above,which of the arrows represents the carrying capacity?

Figure 52.4 -In the figure above,which of the lines represents exponential growth?

Which of the following statements regarding the future of populations in developing countries is FALSE?

Figure 52.13 -What conclusion can you draw from the figure above?

Figure 52.8 -Park Grass study in Rothamstead,UK is the longest-running biological experiment.A series of plots (~1/3 ha each)with uniform soil and vegetation have been treated either with fertilizer,lime,or left as controls.Annually,researchers record plant species present.Based on the graphs above,which species increased and maintained high population size?

Figure 52.1 -In the figure above,which of the following survivorship curves most applies to humans living in developed countries?

What is the primary limiting factor that determines why no female animal can produce a very large number of very large eggs?

The white rhinoceros is large [more than 1 000 kg (2 200 lb)],has a herbivorous diet and lives in the open grasslands and savannahs on the African continent.They require a lot of food (~80 kg)and water (80 L)each day to survive.Given this information you would expect (predict)these rhinoceros to exhibit

What is Earth's carrying capacity?