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18 Cards in this Set
- Front
- Back
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Estuaries
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are extremely important as nurseries for many species of fish
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Animals that cause the sediments to shift, become resuspended, or otherwise change are called
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bioturbators
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Keystone species
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Affect community structure by preying on competitively important prey species
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Benthic species in estuaries may be adapted to estuarine flow
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By having planktonic larvae rise with the flooding tide and staying near the bottom on the falling tide
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On a rocky shore, the competitvely superior species will take over
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Unless there is little larval recruitment of that species
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On a rocky shore, the competitvely superior species will take over
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unless there is little larval recruitment of that species
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The creation of open bare patches in any area of the rocky intertidal zone results in rapid coloniztion by species that might be called:
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opportunistic
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In an ecosystem, as energy is passed from one trophic level to another, the amount of usable energy
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Decreases
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In a year when rainfall is plentiful within an estuary, we might expect
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*Larval recruitment within the estuary to be at a low rate
*Salinity to be generally lower throughout the estuary *Larger supplies of nutrients |
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A member of the infauna that, by its presence in the sediments, helps to hold the sediments in place is called a
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sediment stabilizer
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Bioluminescence can be used for
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*counter illumination
*lures *deceptive signals |
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Temperature in the deep-sea abyssal plain
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Is seasonally and spatially very stable
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mangrove forests are an example of
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an environment where little herbivory occurs
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vestimentiferans (the red tube worms found near hydrothermal vents) can live without a gut
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They have symbiotic bacteria, which are the source of their nutrition
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Vents and cold seeps depend on primary production generated by
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chemosynthetic bacteria
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Which of the following is not necessary for a species to be a keystone species
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consumption of most other species in the community
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Which of the following is the best experimental protocol by which to test the preference of an herbivore for one of two plants
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Place on herbivore with unlimited access to individuals of both plant species. Count the number of each plant species the herbivore consumes in a fixed time period. Replicate with the same and with additionial individual herbivores
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You are studying fish breeding that occurs in a particular estuary. You find that increased levels of nutrients from agricultural run-off result i phytoplankton blooms, followed by zooplankton blooms. As a result of the zooplankton blooms, the availability of oxygen in the estuary water decreases markedly. Which of the following best describes what you observe
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Anoxia following eutrophication
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