Discuss what effective population size (Ne) is , and why is it of importance for conservation strategies . What can cause it to change and how is (Ne) affected by the four evolutionary forces
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- How does the study of population ecology help us understand why some populations grow, some remain stable and others decline? The human population has grown as we have increased our global carrying capacity. In your opinion, can the global carrying capacity continue to increase/ Explain your answer? Why has human population growth, which increased exponentially for centuries, started to decline in the past few decades?Capturing and relocating is stressful for animals. In the zebra example, what are the stages of reintroduction, and what purpose does each step serve? Why is the buffalo considered a success story for reintroduction? (And -- based on what you know from lecture, what type of population growth pattern does this indicate?) Park managers use the term “adaptive management”; what do you think this means, and what are two benefits of this approach to managing ecosystems?How does the study of population ecology help us understand why some populations grow, some remain stable, and others decline? a.) Why has human population growth, which increased exponentially for centuries, started to decline in the past few decades? b.) What is carrying capacity? Do you think carrying capacity applies to people as well as to other organisms? Why or why not?
- Describe at least three other limiting factors (other than the number of predators or prey) that can affect population sizes. What effect does each of these limiting factors have on the populations?Explain logistic growth, carrying capacity, limiting factors,and other fundamental concepts in population ecologyIdentify some applications of population dynamics in conservation biology.
- Explain how logistic growth, limiting factors, carrying capacity, and otherfundamental concepts affect population ecologyFor a conservation biologist interested in sustaining populations of the organisms below, why would it be helpful to take a landscape ecology perspective? Explain your answer in each case. • A forest-breeding warbler that suffers poor nesting success in small, fragmented forest patches • A bighorn sheep that must move seasonally between mountains and lowlands • A toad that lives in upland areas but travels crosscountry to breed in localized pools each springWhat is predator management? What is the linkage between the evolution of prey and predator species and how this relates to the regulation of population size? please answer both
- Describe the mechanisms by which human population growth and resource use causes increased extinction rates.Read the article given below and answer the questions that follow: Recent increases in populations of seabirds that were depleted severely during the middle of the twentieth century demonstrate the efficacy of conservation strategies that work within the context of local culture. Along the North Shore of the Gulf of St. Lawrence in Quebec, Canada, direct exploitation and disturbance of breeding seabirds caused severe declines for several species between 1955 and 1978, including 84 percent and 76 percent declines for Razorbill and Atlantic Puffin, respectively. Significant reductions also occurred for populations of Common Eider (Somateria molissima), Common Murre (Uria aalge), and Black Guillemot (Cyphus grylle). Research by the Quebec-Labrador Foundation, a nonprofit conservation organization, into root causes of the population declines along a 400-km stretch of coast revealed conflicts between conventional enforcement of migratory bird regulations and cultural norms. A household…A biologist determines the growth rate of a population of 198 frogs in a marsh near Beaverhill Lake, Alberta, to evaluate the quality of the environment. The researcher finds that, in one year, 34 were born, 86 died, 12 migrated into the marsh, and there was no emigration. a. frogs are considered an indicator species for the quality of the environment. Determine whether the growth rate of this population in one year is a cause for concern. if so, what might the concerns be?