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- How would you describe the slope ofa rank-abundance curve that vary with increasing species evenness? DISCUSSSUBJECT : Biology - Ecology How would you describe the slope of a rank-abundance curve that vary with increasing species evenness?When we measure species density. If you apply random sampling and systematic sampling to a site setting, what problems may we encounter? Why is there an error compared with the actual density of species?
- Discuss the slope of a rank abundance curve that vary with increasing species evenness?Ecology and Biology: Shannon Diversity Index: Definition & Example The Shannon Diversity Index (sometimes called the Shannon-Wiener Index) is a way to measure the diversity of species in a community. Denoted as H, this index is calculated as: H = -Σpi * ln(pi) where: Σ: A Greek symbol that means “sum” ln: Natural log pi: The proportion of the entire community made up of species i The higher the value of H, the higher the diversity of species in a particular community. The lower the value of H, the lower the diversity. A value of H = 0 indicates a community that only has one species. The Shannon Equitability Index is a way to measure the evenness of species in a community. The term “evenness” simply refers to how similar the abundances of different species are in the community. Denoted as EH, this index is calculated as: EH = H / ln(S) where: H: The Shannon Diversity Index S: The total number of unique species What is the Shannon diversity index value for this community? What…Would you classify these species as weak, moderate, or strong competitors? Explain. Think about population density. Compute the population density if necessary.
- a) Indicate the type of growth and the type of reproductive strategy that each population presents individually.b) Indicate the type of ecological interaction that exists between both populations. Support your answer mathematically.The figure shows the relationship between the growth rates (on a log scale) of individual fish and the similarity of the fish to their competitors. Assuming that populations with faster growth rates are more likely to have greater population growth, which principle or concept does the figure support? 4.0 3.9 드 3.8 3.7 -1.5 Least similar -1.0 -0.5 0.0 0.5 1.0 1.5 Most similar to competitors Morphological index to competitors O A. Competition is most intense when resources are scarce B. Competition can result in character displacement C. Competition is often asymmetrical D. Competition can determine the local distributions of species E. This figure shows no relationship about competition In (growth rate)Discuss possible reasons why the density of certain species were more accurately estimated and why some may have approached the actual density sooner than others with a smaller sample size.
- Calculate the rate of population change for a hypothetical population of wildebeest using the logistics equation and carrying capacity equation. How can you explain these results? N = 500, r = 0.1, K = 1000, calculate dN/dt.GRAPH: In the example below, four bird species consume insects of various sizes. The mean and standard deviations of insects consumed are displayed. Bird Species Mean + standard deviation of insects consumed (mm) 1.7 1.3 Buchman's Warbler House Sparrow 3.7+ 2.2 According to the concept of niche partitioning and the d/w Blue Jay Piliated Woodpecker 6.0 + 4.4 11.5 + 4.0 analysis, which pair of species should be able to coexist? O A. Buchman's warblers and house sparrows O B. blue jays and piliated woodpeckers O C. Buchman's warblers and blue jays O D. house sparrows and piliated woodpeckersHyena carrying capacity in Mkomazi National Park is 500 (in the absence of competitors). Wild Dog carrying capacity in that park is 700 (in the absence of competitors). The addition of 1 wild dog to the park is equivalent to adding 2.5 hyena. The addition of 1 hyena to the park is equivalent to adding 0.4 wild dogs. Which of these species is the better competitor? Justify your answer quantitatively and illustrate your argument using an appropriate graph.