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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***SIMPLE ANSWER PLS***
State how biotic potential and limiting factors affect the carrying capacity.
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 biodiversity
In a temperate grassland ecosystem, to tal primary production was 12,740 g/m/yr. Annual net
secondary pro duction by the herbivorous insect community was 320.5 g/m2/yr. Total net tertiary
production by spiders was 22.6 g/m/yr. Is productivity biomass-based or productivity-based?
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_forwardDescribe the growth at various parts of the S-shaped curve of logistic growth.arrow_forwardDraw an energy pyramid for an ecosystem with three levels ofconsumers.arrow_forward
- In the diagrams below, primary producers are shown in green bars (bottom), primary consumers (herbivores) in orange bars (middle), and secondary consumers (carnivores) in red bars (top). Which of the diagrams shows the relative amounts of energy across trophic levels in a grassland? A- Diagram B B- Diagram E C- Diagram A D- Diagram C E- Diagram Darrow_forwardDescribe characteristics of food web structure in mangrove ecosystem. Use following three words in your answer: microhabitat (s), food chain (s), biomassarrow_forwardResearch 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_forward
- Draw a food chain showing the relationships between these organisms, indicating the direction of the flow of energy. Which organism is at the top of this food chain? Calculate the standing crop biomass in each trophic level (C = A × B).arrow_forwardThe box-and-arrow model below summarizes some of the feedback links observed in the Amazon rain forest. Select true statements, based on whether they are represented by the model. (Note that the boxes and arrows in this model are used differently than those in the nutrient cycle models.) Select all of the ones that apply. A) An increase in CO2 increases the frequency of droughts. B) The death of trees promotes the invasion of grasses. C) Tree growth reduces atmospheric CO2. D) The burning of fossil fuels increases atmospheric CO2. E) Drought increases the frequency of forest fires.arrow_forwardThe Jena experiment tested the effects of plant species richness on the ecosystem function of various grassland areas over a 15-year timespan. Ecosystem function was determined by measuring the biomass, soil characteristics, types, and numbers of producers and consumers in the area, and tested to determine the strength of the biodiversity effect on the ecosystem. The graphs show the ecosystem function at the onset of the experiment (dotted line) versus the ecosystem function at the end of the 15-year experiment (solid line) in four different test sites (A, B, C, and D).arrow_forward
- The diagram below shows the tropic levels and relative sizes of productivity and biomass at four trophic levels. How can the size of the biomass in bottom trophic level be smaller than those of the tropic levels above? Biomassarrow_forwardCreate a bar graph that ranks the given ecosystems from least productive to most productive. Title your graph, label each axis, label each bar, and provide units of measurement. Use the data in the table below showing net primary productivity of major ecosystems of the world: Ecosystem Net Primary Productivity (kcal/m2/yr) coniferous forests 3,500 deciduous forests 6,000 deserts 500 estuaries 9,000 freshwater ecosystems 2,000 grasslands 2,500 oceans 1,000 swamps 9,000 tropical rain forests 9,000 tundra 750arrow_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
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