BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 56, Problem 9U
Summary Introduction
Introduction:
The species richness can be defined as the number of different types of species inhabiting a particular region. The species richness affects many of the ecological processes such as the amount of biomass produced. The diversity of the species is affected by the characteristics of the ecosystem.
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Which of the following is an example of a microclimate affecting an organism's fitness?
Select one or more:
a. A rat carcass lying in a sunny location, slowing the growth of fungus on it.
b. Seasonal rainfalls increasing in frequency, allowing a tree to produce more seeds.
X
c. Average temperatures increasing across a forest, leading to a reduction in prey for wolves to feed on.
X
d. A local wind mixing oxygen into the surface of a lake, increasing diatom photosynthesis rates
#1. Choose between:
GENETIC DIVERSITY, SPECIES DIVERSITY, ECOSYSTEM DIVERSITY
____________a. Introduction of large exotic species like salmon reduced the abundance of native fish species.
____________b. Overharvesting of tawilis led to population decline.
____________c. Conversion of land has reduced forest cover to 5% of original.
Which of the following is based on the interactions of species with their abiotic environment?a. genetic diversityb. landscape diversityc. ecosystem diversityd. biocultural diversitye. None of these are correct.
Chapter 56 Solutions
BIOLOGY
Ch. 56.1 - Prob. 1LOCh. 56.1 - Prob. 2LOCh. 56.1 - Prob. 3LOCh. 56.2 - Describe the different trophic levels.Ch. 56.2 - Distinguish between energy and heat.Ch. 56.2 - Explain how energy moves through trophic levels.Ch. 56.3 - Explain the meaning of trophic cascade.Ch. 56.3 - Prob. 2LOCh. 56.4 - Define ecosystem stability.Ch. 56.4 - Prob. 2LO
Ch. 56.4 - Prob. 3LOCh. 56.5 - Prob. 1LOCh. 56.5 - Prob. 2LOCh. 56 - Prob. 1DACh. 56 - Prob. 2DACh. 56 - Prob. 3DACh. 56 - Prob. 4DACh. 56 - Prob. 1IQCh. 56 - Prob. 2IQCh. 56 - Prob. 3IQCh. 56 - Prob. 4IQCh. 56 - Prob. 5IQCh. 56 - Prob. 6IQCh. 56 - Prob. 7IQCh. 56 - Which of the statements about groundwater is NOT...Ch. 56 - Photosynthetic organisms a. fix carbon dioxide. b....Ch. 56 - Prob. 3UCh. 56 - Nitrogen is often a limiting nutrient in many...Ch. 56 - Prob. 5UCh. 56 - Prob. 6UCh. 56 - Inverted ecological pyramids of real systems...Ch. 56 - Prob. 8UCh. 56 - Prob. 9UCh. 56 - The equilibrium model of island biogeography...Ch. 56 - Based on results from studies at Hubbard Brook...Ch. 56 - According to the trophic cascade hypothesis, the...Ch. 56 - At Cedar Creek Natural History Area, experimental...Ch. 56 - Given that ectotherms do not utilize a large...Ch. 56 - Given that, in general, energy input is greatest...Ch. 56 - Prob. 3SCh. 56 - Explain several detailed ways in which increasing...
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- Which of the following would BEST help conserve biodiversity. CHOOSE ONLY ONE a. Plant native trees b. Engage in aquaculture c. Backyard farmingarrow_forwarduppose frogs that hide in the grasses on the edge of a lake are less likely to be eaten by fish, and more likely to reproduce, than frogs that swim in the open lake. Hiding and swimming behavior are reliably passed to offspring. Hiding in the grasses exhibited by generations of frogs is an example of a(n): Group of answer choices A. genetic mutation. B. independent variable. C. acclimatization. D. adaptation. E. abiotic factor.arrow_forwardBiodiversity hotspotsa. have few populations because the temperature is too hot.b. contain about 20% of Earth’s species even though their area is small.c. are always found in tropical rain forests and coral reefs.d. are sources of species for the ecosystems of the world.e. All except a are correct.arrow_forward
- A recent United Nations analysis report gathered data on declines in biodiversity across the world. Using the graphs provided, which statement shows an area of concern and is an alternative to the general hypothesis "Humans are responsible for a significant increase in the extinction rate among species in the world today as a result of damage caused to the environment"? A. Fertilizer use in developing countries should be encouraged to decrease the extinction rate B. Decreasing air pollution in the least developed countries would decrease species survival rate C. Protection of key biodiversity areas should be a priority for developed countries to lower the extinction rate D. Assisting developing countries with more sustainable methods of extraction of living biomass would increase species survival ratesarrow_forwardEcological dominants are a. the most numerous or make up the most biomass within a community. b. are species that may not be the most numerous within a community, but whose role is so significant that its absence would bring about considerable change. c. species that are introduced into an area where they do not naturally occur. d. the most important species on the planet.arrow_forwardA conservation biologist has been asked to explain why it is important to protect biodiversity. She would list all of the following reasons except for which one? A. Humans are dependent on many species for food, medicines, fiber, and other necessities. B. Biodiversity can be exploited indefinitely for the profit of humans. C. Other species have inherent value and humans have a moral obligation to protect them. D. Biodiverse ecosystems provide ecosystem services that sustain all life on Earth. E. Biodiversity provides emotional and physical health benefits by providing places for humans to visit for wonder, insight, and exercise.arrow_forward
- Which of the following statements best represents the productivityhypothesis regarding species richness?a. The larger the area, the greater the number of species that will befound there.b. Temperate regions have a lower species richness due to the lack oftime available for migration after the last Ice Age.c. The number of species in a particular community is directly relatedto the amount of available energy.d. As invertebrate productivity increases, species richness will increase.e. Species richness is not related to primary productivity.arrow_forwardThe relative abundance of any one species within a community of many species is known as a. species evenness. b. species richness. c. specialization. d. population.arrow_forwardGradually, fewer low-growing plants will sprout and more shrubs and trees will begin to grow. The process above could be described as _____________ succession or ____________ competition a. seconday; intraspecific b. primary; interspecific c. primary; interspecific d. seconday; intraspecificarrow_forward
- In landscape ecology, the matrix is the area surrounding a habitat patch. The matrix can affect a species living in the habitat patch by altering: O A. Dispersal between patches B. The availability of resources C. The abiotic environment in patches D. Our appreciation of Keanu Reeves' acting skills E. A, B and C are correctarrow_forwardThe rocky shore shows the greatest level of biodiversity: a. Above the high tide line b. Between the high-tide and low-tide lines c. In the splash zone d. In brackish water e. In rock pools above the mid-tide linearrow_forwardWhat is the importance of endemic hotspots to biodiversity conservation? A. Endemic hotspots contain many species found nowhere else, so the conservation of a small amount of area will protect many species. B. Endemic hotspots have the highest species diversity, so their conservation will protect the most species. C. Endemic hotspots are those that contain species vital to human existence, ssuch as medicinal species, and therefore humans rely on these areas the most. D. Endemic hotspots are where speciation rates are thegreatest, so the conservation of those areas will likely lead to the formation of many species in the future. E. Endemic hotspots have very low ecosystem stability, therefore require more protections to avoid extiction.arrow_forward
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