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- 7) The following data has been obtained from the coastal haddock (Melanogrammus aeglefinus) fishery of Maine. The fishing season was divided into 10 periods. Period Catch per Period 1 208 2 195 3 168 4 132 5 91 6 80 7 63 8 56 9 48 10 33 It was also recorded that five fishing trawlers were in operation during each period of the fishing season. Question: What was the size of the haddock population originally available to the fishery?1. Answer the following questionsa)How long will it take for a dolphin population to be reduced by 50% if the intrinsic rate of increase is -.04?b)In the last 70 years the blue whale population decreased from 340,280 to 4,727. What is the intrinsic rate of decrease (r)? c)If the current intrinsic rate of increase for blue whales is .1, how long will it take the current population of 4,727 to climb back to 340,280?1. In an attempt to save a rare endangered species, a number of zoos agree to begin a breeding program. A single pair of endangered species is expected to successfully rear an average of nine offspring per year, all of which survive to maturity (i.e., 4.5 per parent per generation). (A) Use the appropriate equation to calculate the number of individuals in the population after eight years.
- A particular specie of animal has a carrying capacity of K and a growth rate of r. From an initial population of N0, what will be its population after a very long time? Show your calculations.A continuously growing population of alligators has a population size of 1,000 and an intrinsic rate of increase of r= 0.05 per year. Assuming that this rate of increase remains the same, about how long should it take for the population to reach 4000?3. The population of rats in a field had a tremendous decrease because of the absence of snakes. * A. density-dependent limiting factor B. density-independent limiting factor
- 1)Questions related to population dynamics look at which aspect of a population? a)The factors that determine the maximum population size that can be supported in an environment b)How diseases are transmitted through a population c)How the genetics of a population change over time d)How & why population size changes over time e)How the number of species in an environment changes over time2. What is the generation time, net reproductive rate, and intrinsic rate of increase? 3. Plot the change in population size over time (for 10 years) starting with 10 individuals. 4. What would the female population size be in 25 years? 5. If hares were an endangered species, what other kinds of information would you need to gather to support your predictions made in 3 and 4?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.
- Write the BIDE dynamics equation, where the left side of the equation is Nt+1. Realizing you are working with a closed population, put an “X” through the terms you will not need to consider to understand population growth of a species.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.What is the name of the "law" described by the formula in (1) (where R is how related two individuals a and b are, B is the reproductive benefit to B and C is the reproductive cost to a? (1) RabBb > Ca