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11 Cards in this Set
- Front
- Back
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What are ecological sentinels?
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Ecological sentinels are species that signal substantial ecosystem change.
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What is an example of an ecological sentinel?
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lichens - respond to air pollutants
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What is the limiting nutrient that drives increased algal populaton growth in the lake ecosystem?
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Phosphorus (P)
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What is biomanipulation?
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Biomanipulation is food web manipulation or the re-introduction of carnivores.
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What does the area-effect hypothesis state?
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The area-effect hypothesis states that larger areas support greater species richness (species number).
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What is restoration ecology?
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Restoration ecology seeks to initiate or accelerate the recovery of degraded ecosystems.
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What is bioremediation?
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Bioremediation is the use of select species to reduce toxin levels in contaminated waters and soils.
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What is biological augmentation?
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Biological augmentation is the intentional use of select species to introduce essential nutrients into a damaged ecosystem.
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What can help restore riparian ecosystems?
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Biomanipulation (the re-introduction of carnivores) may help restore some disturbed riparian zones.
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How can biomanipulation be used to manage populations of problematic algae in aquatic ecosystems?
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Food web manipulation (biomanipulation) can be used to manage nuisance algae in a lake with four trophic levels.
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How could phytoremediation be used to reduce heavy metal levels in contaminated soils?
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The root secretion stimulates microbial activity to decrease the metal levels.
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