Biology 2483A Lecture Notes - Diatom, Algae, Chthamalus

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brownseal791

5 Dec 2013

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Competition is an interaction between individuals in which each is harmed by their shared use of a limiting resource. Competition occurs between species that share the use of a resource that limits the growth, survival, or reproduction of each species. Interspecific competition: interaction between two different species in which each is harmed when they both use the same limiting resource. Intraspecific competition: between individuals of a single species. As a result, the resources available to members of a high density population can be reduced to such an extent that growth, survival, or reproduction decreases or emigration increases. Resources are features of the environment required for growth, survival, or reproduction, and which can be consumed to the point of depletion. Light for plants. (overstory tall trees absorb all the light, thus consuming it. For mobile animals, space for refuge, nesting, etc. Species are also influenced by physical factors (abiotic) that are not consumed, such as temperature, ph, salinity.

Related Questions

Community Ecology

6. Competition between species is called ____________ competition. A. interspecific
B. exploitative
C. interference

D. fundamental E. intraspecific

7. A species that plays a critical role in maintaining the structure of an ecological community and helps to determine the types and numbers of various other species in the community is known as
A. a predator.

B. a keystone species. C. the primary species. D. the dominant species. E. the alpha species.

Evolution

1. We build trees because:
A. Organisms are related like members of a family are related.
B. Each lineage has a common ancestor that gave rise to that lineage. C. Characteristics are passed on from parents to offspring.
D. all of the above

2. Evolution basically denotes change in populations to: A. Improve reproductive success.
B. Remove defective individuals.
C. Increase the survival of the most fit individuals.

D. Discover better genes.

3. We can put species into groups based on shared: A. genes.
B. characteristics.
C. ecology.

D. environment.

4. Bats and birds share a common characteristic like having four limbs- homologies- with: A. Amphibians
B. Rodents.
C. Reptiles.

D. all of the above.

5. Which of these are mechanisms of evolution? A. Mutation
B. Migration
C. Gene flow

D. all of the above

6. Natural selection involves the following: A. Variation in traits
B. Differential reproduction
C. Hereditary

D. all of the above

All of the organisms plus the nonliving components of a defined area is a/n ____.

Abiotic components of an ecosystem include ___.

The physical place where members of a population typically live is termed a __.

The total of all the resources, both biotic and abiotic, a species exploits for its survival, growth, and reproduction is its __.

When two or more species vie for the same limited resource, _____ occurs.

A relationship between different species in which one species lives in or on another is __.

Which of the following obtain energy and carbon by feeding on producers and one another? (choose one) decomposers, consumers, or producers

A type of symbiosis in which both species benefit is __.

Type of symbiosis where one member of the relationship benefits and has no effect on the other

A type of symbiosis in which one member of the relationship benefits and the other is harmed

Which of the following feed on organic wastes? (choose one) decomposers, consumers, or producers

Organisms that obtain their energy from producers or other consumers are __.