PRESCOTT'S MICROBIOLOGY
11th Edition
ISBN: 2818440045677
Author: WILLEY
Publisher: MCG
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Textbook Question
Chapter 30.3, Problem 2MI
How does the contribution of benthic autotrophs differ in deep lakes compared to that in shallow lakes? How does this affect the relative contribution of phytoplankton in these two aquatic systems?
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Which among A-D is not a step in the eutrophication process?
A) O rapid growth of algae and cyanobacteria
B) O influx of excess nutrients to an aquatic environment, particularly nitrogen and phosphorous
C) O heterotrophic, aerobic respiration
D) O eventual increase in the numbers of fish and other aquatic life due to the rise m oxygen concentration of the water
E) OA-D are all a part of eutrophication
By what benthic organisms are mostly affected?
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Chapter 30 Solutions
PRESCOTT'S MICROBIOLOGY
Ch. 30.1 - Prob. 1MICh. 30.1 - What factors influence oxygen solubility? How is...Ch. 30.1 - Describe the buffering system that regulates the...Ch. 30.1 - Prob. 3CCCh. 30.1 - What features of a thermocline make it similar to...Ch. 30.2 - How is sulfur cycled between the anoxygenic...Ch. 30.2 - Prob. 1.1CCCh. 30.2 - Prob. 1.2CCCh. 30.2 - How do heterotrophic microbes contribute to the...Ch. 30.2 - Prob. 3MI
Ch. 30.2 - What is marine snow? Why is it important in CO2...Ch. 30.2 - Prob. 2.2CCCh. 30.2 - Prob. 2.3CCCh. 30.2 - Prob. 2.4CCCh. 30.2 - Prob. 2.5CCCh. 30.2 - Explain what is meant by upside-down microbial...Ch. 30.2 - Prob. 2.7CCCh. 30.3 - Figure 30.15 Nutrient Cycling in Antarctic Lakes...Ch. 30.3 - How does the contribution of benthic autotrophs...Ch. 30.3 - Why does water turbulence play only a minor role...Ch. 30.3 - Why is mixotrophy suited for survival in Antarctic...Ch. 30.3 - What is an oxygen sag curve? What changes in a...Ch. 30.3 - What are point and nonpoint source pollution? Can...Ch. 30.3 - Prob. 4CCCh. 30.3 - Prob. 5CCCh. 30.3 - Why do cyanobacteria often dominate waters that...Ch. 30 - Prob. 1RCCh. 30 - Prob. 2RCCh. 30 - Prob. 3RCCh. 30 - Prob. 4RCCh. 30 - Prob. 5RCCh. 30 - Prob. 6RCCh. 30 - Prob. 7RCCh. 30 - Prob. 8RCCh. 30 - The unicellular cyanobacterium Prochlorococcus sp....Ch. 30 - Prob. 2ALCh. 30 - It is well known that bacterivory (the consumption...Ch. 30 - Prob. 4AL
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- How is phytoplankton primary production measured in aquatic environments?arrow_forwardHow phosphorus levels impact green algae and dissolve oxygen in a lake ecosystem? Which includes consumers such as zooplankton and trout?arrow_forwardCould there be any advantage for a Phytoplankton cell to not minimize the sinking rate? Explain.arrow_forward
- List some metabolic strategies that have evolved to enable microbial survival in oligotrophic marine habitats. Which do you think is most successful in terms of numbers of microbes and metabolic flexibility? Explain your answerarrow_forwardAn estimated 1000 kg of plant plankton are needed to produce 100 kg of animal plankton. The animal plankton is in turned consumed by 10 kg of fish, the amount needed by a person to gain 1 kg of body mass. i) explain why the amount of biomass declines at each successive trophic level.arrow_forwardHow efficient is energy transfer between trophic levels in foodwebs?arrow_forward
- The deep scattering layer is created by which of these: a) seasonal changes in the thermocline O b) mesopelagic nekton O c) abyssopelagic plankton O d) phytoplankton bloomsarrow_forwardWhere in the energy and trophic schemes do decomposers enter?arrow_forwardHow do plankton density and other parameters affect any observed microhabitat's computed Gross primary product (GPP)?arrow_forward
- Why is release of sulfide from oxygen minimumzones infrequent, occurring at times of exceptionallyhigh surface water productivity?arrow_forwardWhat result can a lake give which is rich in organic waste?arrow_forwardAs 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_forward
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