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Ch. 54 - Biodiversity and Conservation Ecology
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All textbooksFreeman 8th EditionCh. 54 - Biodiversity and Conservation EcologyProblem 15

Chapter 53, Problem 15

Do you drink coffee? A lot of people do—coffee is a major tropical crop, valued at over $100 billion per year. The most popular species of coffee, Coffea arabica, originated in Africa and is now planted extensively in Central and South America. The pest called the coffee berry borer beetle (Hypothenemus hampeii) moved along with the coffee and is a major problem for coffee farmers, sometimes destroying half of the coffee crop in mature plantations. Draw a simple model to compare the relative species richness and species diversity of these two coffee plantations: one is clear-cut and planted with only coffee shrubs, the other retains some natural forest. For symbols, use a few letters to represent different species of plants and a few numbers to represent different species of animals in a square 1-ha plot.

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Hello everyone here we have a question that says species blank refers to the total number of species in a community. Where species blank refers to the total number of individuals within each species. A. We have dominance and evenness ecological dominance is the degree to which one or several species have a major influence controlling the other species in their community or make up more of the biomass. And even this is how close in numbers each species in an environment is so A. Is incorrect. Be richness and abundance. Richness is the number of species in the community and abundance is the number of individuals per species. So B is correct. See index diversity. The index is the general term of quantitative measures that reflect how many different types there are in a data set. In this case it would be like types would be species and the data sat would be a community. So C. Is incorrect. And then we have evenness and richness, which is incorrect. So our answer here is be richness abundance. Species richness refers to the total number of species in a community, whereas species abundance refers to the total number of individuals within each species. Thank you for watching. Bye.
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Textbook Question

Do you drink coffee? A lot of people do—coffee is a major tropical crop, valued at over $100 billion per year. The most popular species of coffee, Coffea arabica, originated in Africa and is now planted extensively in Central and South America. The pest called the coffee berry borer beetle (Hypothenemus hampeii) moved along with the coffee and is a major problem for coffee farmers, sometimes destroying half of the coffee crop in mature plantations. The abundance of birds and other predators of borer beetles depends on how much natural forest is left within and around the coffee plantations. What is the approximate percentage increase in borer predators per hectare if forest cover is doubled from 15 to 30 percent?

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Do you drink coffee? A lot of people do—coffee is a major tropical crop, valued at over $100 billion per year. The most popular species of coffee, Coffea arabica, originated in Africa and is now planted extensively in Central and South America. The pest called the coffee berry borer beetle (Hypothenemus hampeii) moved along with the coffee and is a major problem for coffee farmers, sometimes destroying half of the coffee crop in mature plantations. Evaluate this statement: Leaving some natural forest in and around coffee plantations is a 'win-win' situation—a win for ecosystems and a win for farmers.

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