Term
| What are the three scales that biodiversity exist at? |
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Definition
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Term
| What are the two factor that Species Diversity Depends On? |
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Definition
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Term
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Definition
| The number of different species present |
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Term
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Definition
| The number of individuals of each species that is present |
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Term
| What are the three ways in which evolution can occur? |
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Definition
Random Processes
Natural Selection
Artificial Selection |
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Term
| When does Artificial Selection Occur? |
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Definition
| Humans determine which individuals will mate and pass on their genes to the next generation to achieve a predetermined suite of traits. |
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Term
| What does Natural Selection Favor? |
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Definition
| Any suite of traits that provide individuals with the best ability to survive and reproduce. |
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Term
| What are examples of Random Processes? |
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Definition
Mutation
Genetic Drift
Bottleneck Effects
Founder Effects |
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Term
| Do random processes favor anything? |
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Definition
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Term
| What does Evolution by natural selection favor? |
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Definition
| Combinations of traits that allow individuals to perform well under particular environmental conditions. |
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Term
| What constitutes a species fundamental niche? |
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Definition
| A range of preferred abiotic conditions. |
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Term
| What further restricts the range of conditions under which a species can live? |
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Definition
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Term
| What are some examples of Biotic factors, that restrict the range of conditions under which a species can live? |
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Definition
Competition
Predation
Disease |
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Term
| What is a species realized niche? |
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Definition
| The Biotic Factors that further restricts the range of conditions under which a species can live. |
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Term
| What have the potential to change species distributions? |
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Definition
| Changes in environmental conditions. |
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Term
| What do Ecologists use growth models for? |
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Definition
| To explain and predict changes in population size. |
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Term
| What does the exponential growth model describe? |
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Definition
| Rapid growth under ideal conditions when resources are not limited. |
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Term
| What incorporates density-dependent factors that cause population growth to slow down as populations approach their carrying capacity? |
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Definition
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Term
| Organisms have a range of what? |
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Definition
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Term
| What are the extremes of species reproductive patterns? |
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Definition
| r-selected species and k-selected species |
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Term
| Define r-selected species |
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Definition
| Species which experience rapid population growth rates |
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Term
| Define k-selected species |
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Definition
| Species which experience high survivor ship and slow population growth rates |
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Term
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Definition
| An interaction between two or more species that share a limiting resource. |
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Term
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Definition
| An interaction in which one species consumes part or all of another species. |
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Term
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Definition
| An interaction in which two species provide fitness benefits to each other. |
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Term
| What are Keystone species? |
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Definition
| Species that have an effect on their community that is greater than their abundance would suggest. |
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Term
| What is Ecological Succession? |
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Definition
| The predictable replacement of one group of species by another group of species over time. |
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Term
| What are the two kinds of ecological succession in terrestrial communities? |
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Definition
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Term
| Where does specie richness typically increase? |
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Definition
| As we move from the poles toward the equator, with the length of time a habitat has existed, with increasing habitat size and with shorter distances from sources of colonizing species. |
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