Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 55.1, Problem 2CC
WHAT IF? Ø You are studying nitrogen cycling on the Serengeti Plain in Africa. During your experiment, a herd of migrating wildebeests grazes through your study plot. What would you need to know to measure their effect on nitrogen balance in the plot?
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please draw! make everything clear please!
Create a model which accurately, in detail, depicts the potential pathways of carbon (biomass) and energy in an ecosystem with at least five trophic levels (don’t forget your decomposers, they can count as one trophic level). Make sure to incorporate the multiple pathways that biomass and energy could take at each trophic level. Lastly, clearly illustrate how carbon and energy flow in this ecosystem. Be sure to include adequate levels of detail for all pathways and differentiate the flow of carbon and energy in your model.
FOOD WEB AND FOOD CHAIN WORKSHEET
1 Look at this food chain.
lettuce
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thrush
cat
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a What does the arrow mean in a food chain?
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b Name the producer in the food chain
c Name the third trophic level in the food chain.
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d Name the tertiary consumer in the food chain.
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e What is the ultimate source of energy that drives the food chain?
Ragweed
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Deer mouse
Grama grass
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21
Which of the following energy pyramids best represents the flow of energy in the food web pictured?
A
Red-tailed
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Deer mouse
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Coyote
Black-tailed jackrabbit
Red-tailed hawk
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D
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Chapter 55 Solutions
Campbell Biology (10th Edition)
Ch. 55.1 - Why is the transfer of energy in an ecosystem...Ch. 55.1 - WHAT IF? You are studying nitrogen cycling on the...Ch. 55.1 - MAKE CONNECTIONS Use the second law of...Ch. 55.2 - Why is only a small portion of the solar energy...Ch. 55.2 - How can ecologists experimentally determine the...Ch. 55.2 - MAKE CONNECTIONS Explain how nitrogen and...Ch. 55.3 - If an insect that eats plant seeds containing 100...Ch. 55.3 - Prob. 2CCCh. 55.3 - Prob. 3CCCh. 55.4 - DRAW IT For each of the four biogeochemical...
Ch. 55.4 - Why does deforestation of a watershed increase the...Ch. 55.4 - WHAT IF? Why is nutrient availability in a...Ch. 55.5 - Prob. 1CCCh. 55.5 - Prob. 2CCCh. 55 - Considering the second law of thermodynamics,...Ch. 55 - Prob. 55.2CRCh. 55 - Why would runners hove a lower production...Ch. 55 - If decomposers usually grow faster and decompose...Ch. 55 - In preparing a site for surface mining and later...Ch. 55 - Which of the following organisms is incorrectly...Ch. 55 - Prob. 2TYUCh. 55 - The discipline that applies ecological principles...Ch. 55 - Level 2: Application/Analysis 4. Nitrifying...Ch. 55 - Which of the following has the greatest effect on...Ch. 55 - Prob. 6TYUCh. 55 - Which of the following would be considered an...Ch. 55 - Prob. 8TYUCh. 55 - Level 3: Synthesis/Evaluation 9. DRAW IT (a) Draw...Ch. 55 - Prob. 10TYUCh. 55 - Prob. 11TYUCh. 55 - WRITE ABOUT A THEME: ENERGY AND MATTER...Ch. 55 - Prob. 13TYU
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- If the N and P content of some algae is as shown in the following table. The third column shows nutrient available in the water. Nutrient Nitrogen Phosphorus (a) (b) mg nutrient/g of algae Available, mg/L 0.62 80 6.9 0.15 What percent reduction in nitrogen is needed to control algal production to 1.0 mg/L? What percent reduction in phosphorus is needed to control algal production to 1.0 mg/L?arrow_forwardplease draw! Create a model which accurately, in detail, depicts the potential pathways of carbon (biomass) and energy in an ecosystem with at least five trophic levels (don’t forget your decomposers, they can count as one trophic level). Make sure to incorporate the multiple pathways that biomass and energy could take at each trophic level. Lastly, clearly illustrate how carbon and energy flow in this ecosystem. Be sure to include adequate levels of detail for all pathways and differentiate the flow of carbon and energy in your model.arrow_forwardTransfer of energy problem solving: Let us assign some values to the energy that flows in each trophic level. Assuming that the amount of energy that reaches a one (1) hectare of farmland is 10 million kcal/year. 1.4 What is the available energy to the quaternary consumer if the tertiary consumer had eaten 40 % of the stored energy in the secondary consumer? 2.3. How much energy is available to the tertiary consumer if the secondary consumer had eaten 30 % of the energy stored in the herbivore?arrow_forward
- 4) A chicken farm produces about 800 kJ/m' of potential food energy per year. Assume that a human must consume 2400 kJ per day to survive. Although it is an oversimplication to imply that a person could survive by eating only one type of food, calculate the total area of land needed to support the entire student population of your school (n=1800) for one year on a diet of (a) rice ONLY and (b) chicken ONLY. SHOW YOUR WORK ON A SEPARATE SHEET OF One square metre of land that is planted with rice produces about 5200 kJ of energy per year. PAPER! pe here to searcharrow_forwardRank the following trophic examples lowest to highest in terms of likely trophic efficiencies. (In determining your answer consider the trophic efficiency between the top consumer and the most primary food source given in each example.) (A) A lake with large fish grazing on phytoplankton (B) A pasture with cattle grazing on grasses (C) Humans feeding on the fish grazing on phytoplankton in A (approximate FCR of the fish is 1 lb/lb) (D) Humans feeding on the cattle grazing on grasses in B (approximate FCR of the mammals is 7 lb/lb) OBarrow_forwardNitrogen is often the limiting nutrient (that is, the nutrient in shortest supply relative to demand) across a wide range of ecosystems. This is because: a. nitrogen compounds like ammonia are rapidly stored in rocks and sediments. O b. most nitrogen is in the form of N2, which only specialized bacteria can fix into accessible forms. О с. there is very little nitrogen on Earth, compared with other nutrients. O d. decomposers don't return nitrogen to a usable form.arrow_forward2 In a temperate grassland ecosystem, total primary production was 12,740 g/m/yr. Annual net secondary production by the herbivorous insect community was 320.5 g/m/yr. Total net tertiary production by spiders was 22.6 g/m/yr. Calculate the trophic efficiency from the first trophic level to the third trophic level.arrow_forwardOptional Exercise Barn Owls produce 2 pellets per day. Assume each pellet contains 80g of biomass. Also assume that one 40g vole can cause 50 cents of crop damage to a farm per season. If a Barn Owl family of seven (2 adults and 5 young) lives on a farm for 12 weeks and feeds entirely on voles, how much will the farmer save in crop damages?arrow_forwardConsidering the second law of thermodynamics, would you expect thetypical biomass of primary producers in an ecosystem to be greaterthan or less than the biomass of secondary producers in the system?Explain your reasoningarrow_forwardMatter is continually recycled between abiotic and biotic components of Earth's ecosystem in biogeochemical cycles. the various cycles differ from one another in several key aspects of their storage, conversion and modes of transport. A. Describe the critical processes by which nitrogen is cycled through the biotic and abiotic components of earth’s atmosphere and identify the primary storage sink for nitrogenarrow_forwardCreate a model which accurately, in detail, depicts the potential pathways of carbon (biomass) and energy in an ecosystem with at least five trophic levels (don’t forget your decomposers, they can count as one trophic level). Make sure to incorporate the multiple pathways that biomass and energy could take at each trophic level. Lastly, clearly illustrate how carbon and energy flow in this ecosystem. Be sure to include adequate levels of detail for all pathways and differentiate the flow of carbon and energy in your model.arrow_forwardCan someone please help me with this assignment Create a diagram of the carbon cycle or the nitrogen cycle. You may use the draw function, or draw on paper and insert a photo of your diagram, or insert text boxes and arrows. Be sure to label the reservoirs (text boxes) and the flows (arrows) between reservoirs. thank youarrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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