Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 56.3, Problem 3R
Summary Introduction
To review:
The mechanism by, which species that depend on same limited
Introduction:
An ecological community is composed of many species, which often depend on the same limited resources for their food and shelter. The lottery model or neutral model depends on the chance factor in ensuring that two species that depend on the same resources in same area are able to co-exist.
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Study the graphs shown in the picture. Describe the patterns observed in the top group depicting changes in the number of species per year. Are these patterns similar or different from the patterns observed in the bottom group depicting turnover of species?
Write a hypothesis to the question: How is a species’ population dynamics affected by thepresence of another species within? the same niche?
Using the community assembly theory, provide a framework or explanation on: How do some exotic species outperform locally-adapted native species? Cite specific example(s).
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Life: The Science of Biology
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- Draw a graph where two species compete and species 2 competitively excludes species 1. Use arrows to indicate how this competitive exclusion occurs. LABEL YOUR AXES!arrow_forwardGive an example to show that completely unrelated species can also compete for same resources?arrow_forwardBased on the data (and your graph), which of the native species will be least affected by the introduction of the bullfrogs? Please provide EVIDENCE to support your CLAIM.arrow_forward
- briefly explain why there is species variation?arrow_forwardDescribe resource partitioning. Refer to partitioning in space and time. Refer to partitioning withing a species.arrow_forwardState two possible reasons why species may have a regular (uniform) distribution? Write 2 sentences for each reason.arrow_forward
- Explain into details why species difinitions matter in conservation biology?arrow_forwardCompare and contrast species scale vs. system scale goals for conserving both mutualist biodiversity and mutualist ecosystem function. Give a real world example in which one of these approaches is used for mutualism conservation and explain its strengths and weaknesses with respect to conserving mutualism.arrow_forwardProvide an sufficient explanation as to how a positive interspecific distribution-abundance relationship occurs.arrow_forward
- REFER TO FIGURE 1 BELOW. Give at least two modulators (physical and chemical properties) that affect the survival of the organisms. DISCUSS (by citing example) HOW this influence ecosystem process and biodiversity?arrow_forwardexplain properly. How is a species’ population dynamics affected by the presence of another species with the same niche?arrow_forwardHow is the concept of a niche useful to understanding distributions of organisms? A two-four sentence answer is all that is neededarrow_forward
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