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The survivorship curve shows a graph of the number of surviving individuals at each age interval versus time.
This curve helps in comparison of life histories of different populations.
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- https://media.hhmi.org/biointeractive/click/lionfish-invasion/introduction.html This section starts explaining how scientists use the population survey data that are collected to model how the lionfish population changes over time. These models enable scientists to make predictions about population changes, which is an important element of developing plans for managing the lionfish population You'll be using the discrete-time logistic model that is described on this page in future parts of the case study, so make sure to carefully read through the explanation of this mathematical model. Even if you don't have a strong math background, this case study walks through the equation step by step. 6)Which of the following are constant terms in the discrete-time logistic model? choose all that apply a)Nt b)ΔN c)t d)K e)Δt f)rmax,d g)None of theseWhat are the generally recognized cultural stages that human populations have experienced?Which pair of terms most accurately describes the life history traits for a stable population of wolves? iteropparous; K-selected iteroparous; r-selected semelparous; K-selected semelparous; r-selected
- Besides a mutation for red color, what other mutation occurred in the lizard population3c: How could the total road kills go down, as the nests are going up? (Nests are something scientists use to estimate the size of adult swallows surviving long enough to reproduce.) 3d: What about the environment contributes to a change in the average wing length in the cliff swallow population over generations? 3e: What is the role of natural selection in explaining the change in average wing length in the population over generations?calculate the number of Physignathus cocincinus in each region, and determine the mean density of lizards in each habitat (A, B and C). Provide a legend to Table 2. Using the literature, explain how would you go about collecting the sort of data shown in Table 2?
- Consider the evolution of the population of a species of small rodents. Assume that the number of males and females are nearly equal. Due to statistical data one can assume that each female remains a juvenile for one year and then becomes an adult, and that only adults have offspring. The reproduction rate is 2. The adult surviving rate is α. The juvenile surviving rate is 2/5. Initially the population counted 100 females and 40 juveniles. What values of the adult surviving rate will ensure that the population stabilize?The type III survivorship curve is found in species in which most individuals die when they are young but a relatively small number of older individuals can live for a long time. Many of these organisms have very long lifespans. This would appear to contradict the evolutionary theory of aging because most individuals die when young but lifespan is long. How can you explain this apparent contradiction. Group of answer choices -older, larger individuals have most of the offspring -all type III organisms have very slow metabolisms -type III organisms are trying to prove evolution wrong -type III organisms die at a constant ratePlease solve
- Birds generally have life-histories that can be placed on a fast-slow continuum. Species with fast life-histories have shorter life spans while species with slow life-histories have longer life spans. With this in mind, what contributes more to population growth for species found on each end of this spectrum, adult survival or annual fecundity, and why?A population of 1,000 wild turkeys is studied and observed by scientists on an island. The scientists construct a study over five years to observe the temperature, amount of precipitation, the daily value of berries individually consumed that were their exclusive food source, mating patterns, and available habitat for nesting. The scientists determined that as the climate changed, the population began to decrease. Using the Hardy-Weinberg Equilibrium as a null hypothesis, which statement would support the alternative hypothesis? No change in the allele frequency of the population was observed because the population size is large. A change in the allele frequency of the population was observed because natural selection occurred due to the change in climate. No change in the allele frequency of the population was observed because mutations will not occur as a result of climate change. A change in the allele frequency of the population was observed because mating is random.