Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 46, Problem 34CTQ
Describe what a pyramid of numbers would like if an ecologist models the relationship between bird
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Describe what a pyramid of numbers would like if an ecologist models the relationship between bird parasites, blue jays, and oak trees in a hectare. Does this match the energy flow pyramid?
The gross primary productivity is 100 g/m2/year and the respiration rate is 57 g/m2/year . If the standing crop (of plants) in the above question is 145 g/m2 what will the standing crop (of plants) be a year later, assuming no death/predation?
Group of answer choices
can't tell from the information given
a. 188 g/m2
b. 145 g/m2
c. 245 g/m2
d. 182 g/m2
Draw an energy pyramid for an ecosystem with three levels ofconsumers.
Chapter 46 Solutions
Biology 2e
Ch. 46 - Figure 46.8 Why do you think the value for gross...Ch. 46 - Figure 46.10 Pyramids depicting the number of...Ch. 46 - Figure 46.17 Which of the following statements...Ch. 46 - The ability of an ecosystem to return to its...Ch. 46 - A re-created ecosystem in a laboratory environment...Ch. 46 - Decomposers are associated with which class of...Ch. 46 - The primary producers in an ocean grazing food web...Ch. 46 - What term describes the use of mathematical...Ch. 46 - The position of an organism along a food chain is...Ch. 46 - The loss of an apex consumer would impact which...
Ch. 46 - A food chain would be a better resource than a...Ch. 46 - The weight of living organisms in an ecosystem at...Ch. 46 - Which term describes the process whereby toxic...Ch. 46 - Organisms that can make their own food using...Ch. 46 - In the English Channel ecosystem, the number of...Ch. 46 - What law of chemistry determines how much energy...Ch. 46 - The mussels that live at the NW Eifuku volcano are...Ch. 46 - The movement of mineral nutrients through...Ch. 46 - Carbon is present in the atmosphere as ________...Ch. 46 - The majority of water found on Earth is: ice water...Ch. 46 - The average time a molecule spends in its...Ch. 46 - The process whereby oxygen is depleted by the...Ch. 46 - The process whereby nitrogen is brought into...Ch. 46 - Which of the following approaches would be the...Ch. 46 - How would loss of fungi in a forest effect...Ch. 46 - Compare and contrast food chains and food webs....Ch. 46 - Describe freshwater, ocean, and terrestrial...Ch. 46 - Compare grazing and detrital food webs. Why would...Ch. 46 - How does the microcosm modeling approach differ...Ch. 46 - How do conceptual and analytical models of...Ch. 46 - Compare the three types of ecological pyramids and...Ch. 46 - How does the amount of food a warm-blooded animal...Ch. 46 - A study uses an inverted pyramid to demonstrate...Ch. 46 - Describe what a pyramid of numbers would like if...Ch. 46 - Describe nitrogen fixation and why it is important...Ch. 46 - What are the factors that cause dead zones?...Ch. 46 - Why are drinking water supplies still a major...Ch. 46 - Discuss how the human disruption of the carbon...
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- INTERPRET DATA Consider the age structure diagrams for counties (a) and (b). Which diagram is consistent with negative growth momentum? Why? KEYarrow_forwardChoose a biological resource and address the following four questions using examples with that biological resource. a) Biomass production over time b) Carrying capacity and extinction threshold c) Management of the recruitment rate d) Describe two ways that climate change could impact the biological resource you selected for this question RESOURCE ECONOMICSarrow_forwardAssume that the producer level in your trophic pyramid contains 12,000,000 kcal of energy. Write the number of kcal that would be available to the other two levels of the pyramid.arrow_forward
- Research the approximate size of the highest level consumer in the ecosystem. How much biomass is necessary to support it and the other consumers in the ecosystem? The primary producers: plants The primary consumers: butterfly, fire ants, fly, grasshopper, mouse, fox squirrel, wasp The secondary consumers: birds, barn owl, rattlesnake, red-eared slider, dog, spider The tertiary consumers: coyote, alligator, bald eaglearrow_forwardExplain the relationship between net primary productivity and biomass in an ecosystem.arrow_forwardApproximately how much rain forest is being lost per year? a. 70,000 hectares b. 700,000 hectares c. 7,000 hectares d. 7,000,000 hectaresarrow_forward
- You are studying primary productivity and biodiversity patterns of an ecosystem. The ecosystem is represented by the climatograph below. The Gross Primary Productivity (GPP) is measured to be 5000 grams of carbon per square meter per year, and the Total Respiration (RT) is measured to be 300 grams of carbon per square meter per year. - What kind of biome is this? - Calculate the Net Ecosystem Production (NEP) for this ecosystem - What does the calculated NEP value indicate about the carbon balance and overall productivity of the ecosystem? (one sentence) - Based on both the climatograph and the NEP, what can you say about the biodiversity of plants versus consumers? Choice 1 of 4:plant biodiversity is greater than consumer biodiversity Choice 2 of 4:consumer biodiversity is greater than plant biodiversity Choice 3 of 4:consumer biodiversity is the same as plant biodiversity Choice 4 of 4:lower plant biodiversity compared to consumer biodiversityarrow_forwardA pyramid of energy reveals the flow of energy from producers to primary consumers and to higher trophic levels. Why is the energy reducingarrow_forwardThe Amazon rainforest continues to be cleared for agricultural land. For each square meter of this rainforest area that was cleared and replaced by farmland, by about how much was NPP reduced each year? Show how you got your answer.arrow_forward
- Considering the energy that is lost as heat to the environment when one organism consumes another, which model correctly shows the trophic levels ranked from greatest energy to least?arrow_forwardChoose one factor from what's listed above and explain how it affects population growth in an ecosystem.arrow_forwardDescribe how change, large and small, has an effect on the ecosystem with examples( for large change and small change)arrow_forward
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