BIOLOGY W/CONNECT >IP<
11th Edition
ISBN: 9781259910487
Author: Raven
Publisher: MCG CUSTOM
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Chapter 57, Problem 2S
Given that, in general, energy input is greatest at the bottom trophic level (primary producers) and decreases with increasing transfers across trophic levels, how is it possible for many lakes to show much greater standing biomass in herbivorous zooplankton than in the phytoplankton they consume?
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Chapter 57 Solutions
BIOLOGY W/CONNECT >IP<
Ch. 57 - Which of the statements about groundwater is NOT...Ch. 57 - Photosynthetic organisms a. fix carbon dioxide. b....Ch. 57 - Prob. 3UCh. 57 - Nitrogen is often a limiting nutrient in many...Ch. 57 - Prob. 5UCh. 57 - Prob. 6UCh. 57 - Inverted ecological pyramids of real systems...Ch. 57 - Prob. 8UCh. 57 - Prob. 9UCh. 57 - The equilibrium model of island biogeography...
Ch. 57 - Based on results from studies at Hubbard Brook...Ch. 57 - According to the trophic cascade hypothesis, the...Ch. 57 - At Cedar Creek Natural History Area, experimental...Ch. 57 - Given that ectotherms do not utilize a large...Ch. 57 - Given that, in general, energy input is greatest...Ch. 57 - Prob. 3SCh. 57 - Explain several detailed ways in which increasing...
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- The trophic levels found in this ecosystem are decomposers, producers, consumers, secondary consumers, and top predators. Which one of these converts light energy into chemical energy?arrow_forwardMass of living matter at a trophic level in an area at any time is called as what?arrow_forwarda. What factors cause energy to decrease with each trophic level?b. How is it possible for energy to be lost and the ecosystem to stillrun efficiently?c. Are the nutrients on the earth a renewable resource? Why or why not?arrow_forward
- how do density-dependent and density- independent limiting factors relate to biotic sand abiotic limiting factors?arrow_forwardwhy are omnivores, decomposers and detrivores not in any trophic level?arrow_forwardHow phosphorus levels impact green algae and dissolve oxygen in a lake ecosystem? Which includes consumers such as zooplankton and trout?arrow_forward
- As climate change continues to warm water bodies, what abiotic changes occur in ponds and lakes? How might these changes impact aquatic primary producers and in turn invertebrates and the larger aquatic food web?arrow_forwardWhich trophic level in an aquatic ecosystem would contain the greatest amount of usable energy? Primary consumers located 150 meters below sea level. Primary producers located 80 meters below sea level. Primary producers located 45 meters below sea level. Primary consumers located 40 meters below sea level.arrow_forwardTrophic levels Part A) In food chains and webs, what trophic level must you have more of than others. Part B) Each trophic level has how much LESS energy? Part C) Can an organism fill more than one trophic level? Explain your answer.arrow_forward
- Energy transferred from one trophic level to the next in an ecosystem is measured in calories, numbers, and in biomass. If a rangeland has a biomass of 100, 000g/m2 from the grass, how much biomass will be available in human beings who eat the cow that eat that grass?arrow_forwardIn terms of trophic levels and energy, why do you suppose that there are not many top predators around?arrow_forwardWhy do patterns of global primary production on land show strong latitudinalvariation, whereas primary production in the oceans varies largely with distance from shore?arrow_forward
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