Exam 52: Population Ecology

Why can't a female lizard have both high fecundity and high survival?

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

Figure 52.8 -The graph (b)in Figure 52.8 shows the normal fluctuations of a population of grouse.Assuming graph (a)in Figure 52.8 is the result of some experimental treatment in the grouse population,what can be concluded?

Figure 52.3 -In Figure 52.3,which of the lines represents exponential growth?

Figure 52.5 -Which statement about K is false?

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?

Figure 52.9 -Which of the following statements about the graphs in Figure 52.9 is false?

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

What can we not determine from examining age pyramids of human populations?

Which of these terms defines how the organism allocates resources to growth,reproduction,and activities or structures related to survival?

The study of factors that determine the size and structure of populations through time is called _____.

Figure 52.4 -In Figure 52.4,which of the arrows represents the carrying capacity?

Use the following abstract from Theoretical Population Biology to answer the corresponding question(s). Abstract: We derive measures for assessing the value of an individual habitat fragment for the dynamics and persistence of a metapopulation living in a network of many fragments.We demonstrate that the most appropriate measure of fragment value depends on the question asked.Specifically,we analyse four alternative measures: the contribution of a fragment to the metapopulation capacity of the network,to the equilibrium metapopulation size,to the expected time to metapopulation extinction and the long-term contribution of a fragment to colonization events in the network.The latter measure is comparable to density-dependent measures in general matrix population theory,though some differences are introduced by the fact that "density dependence" is spatially localized in the metapopulation context.We show that the value of a fragment depends not only on the properties of the landscape but also on the properties of the species.Most importantly,variation in fragment values between the habitat fragments is greatest in the case of rare species that occur close to the extinction threshold,as these species are likely to be restricted to the most favorable parts of the landscape.We expect that the measures of habitat fragment described and analysed here have applications in landscape ecology and in conservation biology. -Based on the information in the abstract,which of the following statements is the most correct?

Given that fertility rate is defined as each woman producing exactly enough offspring to replace herself and her offspring's father,if the fertility rate is sustained for a generation _____.

Use the following abstract from Theoretical Population Biology to answer the corresponding question(s). Abstract: We derive measures for assessing the value of an individual habitat fragment for the dynamics and persistence of a metapopulation living in a network of many fragments.We demonstrate that the most appropriate measure of fragment value depends on the question asked.Specifically,we analyse four alternative measures: the contribution of a fragment to the metapopulation capacity of the network,to the equilibrium metapopulation size,to the expected time to metapopulation extinction and the long-term contribution of a fragment to colonization events in the network.The latter measure is comparable to density-dependent measures in general matrix population theory,though some differences are introduced by the fact that "density dependence" is spatially localized in the metapopulation context.We show that the value of a fragment depends not only on the properties of the landscape but also on the properties of the species.Most importantly,variation in fragment values between the habitat fragments is greatest in the case of rare species that occur close to the extinction threshold,as these species are likely to be restricted to the most favorable parts of the landscape.We expect that the measures of habitat fragment described and analysed here have applications in landscape ecology and in conservation biology. -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?

The definition of a generation is _____.

During the Lacerta vivipara lizard study,researchers monitored individuals on a daily basis to document the number of young produced by each female in the wild.What would be the best way to obtain the same type of data but not have to visit the site every day?

Figure 52.13 -Looking at the data in Figure 52.13 from the hare/lynx experiment,what conclusion can you draw?

Figure 52.1 -In Figure 52.1,which of the following survivorship curves applies to most plant species?

The regular fluctuations in size of animal populations are termed _____.