Categorize the following scenarios as density-dependent and density-independent limiting factors A: A flood wipes out all the plant species that live on a river bed. B: A pack of wolves migrates to a new valley and eats all the deer that inhabit that space. C: A large population of zebras are killed due to a very contagious virus D: A drought kills many of the deer that live in a valley. A В C D
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- Organismsthat produce many offspring would best be characterized by which of thefollowing?a.A convex survivorship curveb.A concave survivorship curvec.A linear survivorship curved.A sigmoidal survivorship curvee.None of the choices applyOne concept of conservation biology is known as minimum viablepopulation. Some species’ populations are so fragmented andsmall that they may have very little genetic variability left. Withminimal genetic variation in the population, there is little likelihoodthat a population can adapt to an environmental threat, such as anew disease. Florida panthers are at or below the minimum viablepopulation level (estimated population less than 80). 1)Do you think that it is practical to use limited resources toconserve a population like the Florida panther? 2)Why?Community 1 contains 100 individuals distributed amongfour species: 5A, 5B, 85C, and 5D. Community 2 contains100 individuals distributed among three species: 30A, 40B,and 30C. Calculate the Shannon diversity (H) for eachcommunity. Which community is more diverse?
- 30 F2 # 3 Answer choices: A (axis for solid lines): B (axis for dashed lines): C (x-axis label): D: equilibrium characteristic E: equilibrium characteristic F: equilibrium characteristic G: equilibrium characteristic A B C D E F 80 F3 $ 4 000 000 F4 do LO % 5 2 : F5 ✓ [Choose ] Small, near islan equilibrium Large, far island equilibrium Small, far island equilibrium Species richness Large, near island equilibrium Immigration rate Extinction rate [ Choose ] [Choose ] [ Choose ] MacBook Air ^ 6 F6 & 7 F.7 < 8 DII F8 9 DD F9Explain how the three major types of deserts differin their climate and vegetation. Why are desert ecosystems vulnerable to long-term damage? How dodesert plants and animals survive? Explain how thethree major types of grasslands differ in their climateand vegetation. What is a savanna? Explain howsavanna animals survive seasonal variations in rainfall (Core Case Study). Why is the elephant an important component of the African savanna? DescribeTuy Sereivathana’s efforts to prevent elephants frombecoming extinct in Cambodia. Why have manyof the world’s temperate grasslands disappeared?Describe Arctic tundra and define permafrost?Explain how the three major types of forests differin their climate and vegetation. Why is biodiversityso high in tropical rain forests? Why do most soils intropical rain forests hold few plant nutrients. Whydo temperate deciduous forests typically have a thicklayer of decaying litter? What are coastal coniferousor temperate rain forests? How do most species…A. What is the carrying capacity of this Grey Squirrel population? B. Grey Squirrels are invasice species to the UK, where Red Squirrela are native. What type symbiotic relationship are the two squirrel populations likely in? C. What hqs likely happened to the carrying cwpwcity of the Red Squirrel as the Grey Squirrel population increased in the UK? Explain why
- Name two reasons that a large national park like Serengetior Yellowstone might not be adequate to effectivelyconserve a population of a threatened species. What solutionsexist to address these reasons?Population size increases whena. the sum of birth rate and death rate exceeds the sum ofimmigration and emigration.b. the sum of birth rate and immigration exceeds the sum of deathrate and emigration.Figure 37.20 Opportunistic and Equilibrium Species:A Summary.• High reproduction rate• Many ospring• Each ospring receives littleparental care• Low survival rate for juveniles• Early reproductive maturity• Type III survivorship curve:Opportunistic life history Equilibrium life history• Low reproduction rate• Few ospring• Each ospring receivesextensive parental care• High survival rate for juveniles• Late reproductive maturity• Type I survivorship curve:AgeSurvivorsAgeSurvivors764 UNIT SEVEN The Ecology of Lifehoe2420X_ch37_748-765.indd 764 12/15/16 11:45 PMc. the sum of birth rate and emigration exceeds the sum of death rateand immigration.d. the sum of death rate and immigration exceeds the sum of birthrate and emigration.A population of 100 Asian elephants exhibits logistic growth. If the carrying capacity is 500 elephants and theper capita growth rate is 0.1 individuals/(individuals × year), what is the maximum population growth rate forthe population?
- Polar bears live on the ice cap near the North Pole. Their numbers aredwindling, apparently because of both pollution and global climatechange. List some specific ways that the melting of the Arctic ice capmight affect polar bear populations.Which of the following is NOT one of the main causes of today’sbiodiversity crisis?a. Natural disasters, such as earthquakesb. Habitat destruction and degradationc. Overexploitationd. Introduction of nonnative species1.app. edmentum.com/assessments-delivery/ua/mt/ la Uhch/35998) oin a Game-Quizi. Sh eppard Software.. Pt Penodic Table- Pta M Richard Montgome... OFloorplanner-Proje. O Calendar Search for a Sd Next O Ecological Succession: Mastery Test 4. Select the correct answer. Which of these examples describes a pioneer species that is starting primary succession? OA. ferns growing at the base of trees in a forest after a fire OB. grass growing on a newly formed dune OC. primroses growing in a new garden Reset Next