3. In 1940 there were 12 whooping cranes in the population. In 1945, five years after huntingwhooping cranes was made illegal, ecologists calculated the whooping crane population growthrate (X) at 1.2 and estimated the population size to be 30 individuals. Using the populationgrowth rate calculated from 1940-1945, what would be the estimated population size forwhooping cranes 20 years into the future (1965)?BIO 316Study Topics and Practice problems for Exam 2Please bring your own calculators. Be sure to show all work in order to get partial and full credit.4. Calculate the Net Reproductive Rate, Mean Generation time, and intrinsic rate of increaseusing the fecundity table below for the Galapagos cactus finch:Age classlxmxlxmx01010.5120.36420.2790.18730.2791.43840.2090.833105678900.2090.50.2090.8330.2090.250.2093.3330.1390.1250.070110.070120.073.5130xlxmx3

Question 3: To estimate the population size for whooping cranes in 1965 using the given growth rate,…

Answered: 3. In 1940 there were 12 whooping…

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter52: Population Ecology

Section: Chapter Questions

Problem 5TYK

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9.Which of the following causes populations to shift most quickly from an exponential to a logistic population growth? a Favorable climatic conditions b Decreased death rate c Increased birth rate d Removal of predators e Competition for resources
1.) If a person weighs 50 kilograms how many kilograms of meat and vegetables could he have possible eaten? 2.) If people will kill the snakes and shrew. What organisms in the Example will have population explosion?
The model of exponential population growth predicts that the per capita population growth rate r: a. does not change as a population gets larger. b. gets larger as a population gets larger. c. gets smaller as a population gets larger. d. is always at its maximum level (rmax). e. fluctuates on a regular cycle.
Match each term with its most suitable description. _____ carrying capacity a. maximum rate or increase per individual under ideal conditions _____ exponential growth b. population growth plots out as an S-shaped curve _____ biotic potential c. maximum number or individuals sustainable by the resources in a given environment _____ limiting factor d. population growth plots out as a J-shaped curve _____ logistic growth e. essential resource that restricts population growth when scarce
One reason why human populations have been able to sidestep the factors that usually control population growth is that: a. the carrying capacity for humans has remained constant sincehumans first evolved. b. agriculture and industrialization have increased the carryingcapacity for our species. c. the population growth rate (r) for the human population hasalways been small. d. the age structure of human populations has no impact on itspopulation growth. e. plagues have killed off large numbers of humans at certaintimes in the past.
Match each term with its most suitable description. _____ carrying capacity a. maximum rate or increase per individual under ideal conditions _____ exponential growth b. population growth plots out as an S-shaped curve _____ biotic potential c. maximum number or individuals sustainable by the resources in a given environment _____ limiting factor d. population growth plots out as a J-shaped curve _____ logistic growth e. essential resource that restricts population growth when scarce
Which of the following is best at showing the life expectancy of an individual within a population? quadrat mark and recapture survivorship curve life table
The demographic transition model predicts a decline in population during the ______ stage. a. preindustrial b. transitional c. industrial d. postindustrial
The age structure diagrams for two hypothetical populations are shown below. Describe the growth rate of each population and discuss the current and future social and economic problems that each is likely to face.
2. If the food source is affecting the buffalo population, what do you predict the graph of the food source would look like? Either draw a graph or write a prediction.
3. A 1998 study of grizzly bears in the Kananaskis area estimated the population size at 48 to 56 individuals. The study area encompassed 4000 hectares. a) Use the values to determine maximum and minimum density estimates for the population.
1.In wildlife management, population numbers must be sustainable in that populations cannot exceed the environment’s ability to support them. Using the ∆N formula, consider the following: Coyotes are members of the Canis family, or dog family, that wanders natural or agricultural grasslands and temperate forest in search of rodents and small prey. Occasionally they will form packs to bring down a larger animal – perhaps a young, sick, or old deer. In this scenario, assume population numbers of coyotes have increased dramatically. a.Using your knowledge of the ∆N formula, provide four possible causes for this dramatic increase in population. b.Assume you are a wildlife manager and that the high coyote population is resulting in more human/coyote interactions. Steps need to be taken to correct the imbalance in coyotes. Provide two ecologically sound solutions to the problem.

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