Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Chapter 42, Problem 6TYU
Summary Introduction
Introduction:
The experimental setup designing a newly deforested land uses for the regulation and study of ecology is called Hubbard Brook watershed deforestation experiment. The interaction between forest and the cycles of nutrient are studied under this experiment.
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Based on results from studies at Hubbard Brook Experimental Forest, what would be the predicted effect of clearing trees from a watershed?
a. Increased loss of water and nutrients from a watershed
b. Decreased loss of water and nutrients from a watershed
c. Increased availability of phosphorus
d. Increased availability of nitrate
You are a commercial developer, and you were asked to develop a golf course on what is presently forested land next to a reservoir used for city water. Describe the impacts this development might have on water quality in the reservoir. (HINT: think of pollution from clearing the land as well as growing grass for the golf course)
"Write a scenario describing what would happen to an ecosystem or to the human system in the event that:(a) All producers are killed through loss of fertility of the soil or through toxic contamination, (b) decomposers and detritus feeders are eliminated.
Support all of your statements with reasons drawn from your understanding of the way ecosystems function"
Chapter 42 Solutions
Campbell Biology in Focus
Ch. 42.1 - Why is the transfer of energy in an ecosystem...Ch. 42.1 - WHAT IF? You are studying nitrogen cycling on the...Ch. 42.1 - MAKE CONNECTIONS Use the second law of...Ch. 42.2 - Why is only a small portion of the solar energy...Ch. 42.2 - How can ecologists experimentally determine the...Ch. 42.2 - Prob. 3CCCh. 42.2 - Prob. 4CCCh. 42.3 - If an insect that eats plant seeds containing 100...Ch. 42.3 - WHAT IF? Detritivores are consumers that obtain...Ch. 42.4 - Prob. 1CC
Ch. 42.4 - Prob. 2CCCh. 42.4 - Prob. 3CCCh. 42.5 - Prob. 1CCCh. 42.5 - How do bioremediation and biological augmentation...Ch. 42.5 - Prob. 3CCCh. 42 - Prob. 1TYUCh. 42 - Which of these ecosystems has the lowest net...Ch. 42 - Prob. 3TYUCh. 42 - Prob. 4TYUCh. 42 - Which of the following has the greatest effect on...Ch. 42 - Prob. 6TYUCh. 42 - Prob. 7TYUCh. 42 - Prob. 8TYUCh. 42 - INTERPRET THE DATA Draw a simplified global water...Ch. 42 - SCIENTIFIC INQUIRY Using two neighboring ponds in...Ch. 42 - Prob. 11TYUCh. 42 - FOCUS ON ENERGY AND MATIER Decomposition typically...Ch. 42 - Prob. 13TYU
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- Deforestation ______. a. increases mineral runoff from soil b. decreases local temperature c. increases local rainfall d. all of the abovearrow_forwardIn a temperate grassland system area of North America, vegetation has been destroyed by fire. What will happen to the net primary productivity and the local ecosystem when rains return in the next season? a The grasses will grow back, but the herbivores that lived there will not return, as they would have found new land to live on. Therefore, the net primary productivity would decrease. b The grasses will not grow back, therefore the herbivores that lived there will not return. Thus, the net primary productivity would decrease. c The grasses will grow back and the herbivores that lived there will return. The net primary productivity should also be similar to the previous season. d The grasses will grow back and the herbivores that lived there will return. The net primary productivity would be less than the previous season.arrow_forwardMichael wants to build a new storage shed and is considering clearing some trees from his land to use as lumber. What justification best explains the ecological benefit of saving his trees? a Decreasing shade and windbreaks b Providing food for hundreds of species c Sequestering (storing) carbon d Aiding in discharge of aquiferarrow_forward
- These are the common threats in grassland biomes EXCEPT a. Illegal hunting b. Production of invasive species c. Deforestation d. Overgrazing of animals What is the effect of impervious surface? a. Faster seeping of water to ground b. It can cause groundwater contamination. c. Infiltration process will easily take place. d. Difficulty on seeping water to the ground creating high urban runoff.arrow_forwardSavanna and _____ are the two types of grassland. a. tropical grassland b. Mediterranean grassland c. temperate grassland d. None of the above Which energy resource leaves toxic heavy metals after the purification process? a. Natural Gas b. Coal c. Geothermal Energy d. None of the Abovearrow_forwardWhich of these hypotheses does not explain why increased CO2 levels in the atmosphere could cause a decrease in the productivity of some crops because of changes in climate? A) There could be increases in average winter temperatures that reduce the growth of crops. B) There could be decreases in precipitation in some regions that reduce growth in some crops. C) There could be shifts in the ranges of some important species in the community, such as pollinators, that cause reduction of growth in some crops.arrow_forward
- Which of the following processes lead to desertification of land in semi-arid areas? A. excessive irrigation B. intense fertilization C. overgrazing D. property developmentarrow_forwardThe Burmese Python, an invasive species, has been introduced to the Florida Everglades, largely through release by owners who acquired the snakes from exotic pet traders. Though the Everglades are protected, pythons as predators can not be easily controlled. What can be concluded about the effect of the python population on the biodiversity of the Everglades? A. Since the Everglades are protected, python control is limited under laws that protect species in the Everglades. B. Since the python population is growing, it will eventually become a native species and will increase biodiversity. C. Since pythons prey on many species in the Everglades, resources will be more available for surviving species and fewer will be considered endangered. D. Since pythons have no predators, they are responsible for decreasing mammal population and are a greater threat to biodiversity.arrow_forwardWhich of the following would represent an ecosystem? a. A lake b. A fish tank c. A prairie d. all of these.arrow_forward
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