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30 Cards in this Set
- Front
- Back
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energy from outside stream channel?
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allochthonous
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energy from within stream channel?
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autochthonous
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streams that flow less than 30 days per year?
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ephemeral
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streams that flow more than 30 days per year? streams with continuous flow?
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intermittent, perennial
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describe a cascade stream reach
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boulders, valley confined, pool limited
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describe a step-pool stream reach
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cobble/boulders, valley confined, pools frequent
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describe a pool-riffle stream reach
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gravel, valley less confined, pools spaced regularly
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describe a dune-ripple reach
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large streams, sandbeds
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species that occupy a narrow range of temperatures?
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stenothermal species
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species that occupy a wide range of temperatures?
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eurythermal species
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species that produce their own energy?
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autotrophs
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species that eat other organisms for energy
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heterotrophs
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epilithon species grow on____
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stones
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epipelon species grow on____
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soft sediments
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epiphyton species grow on____
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other plants
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macrophyte growth forms? (4)
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emergent, floating-leaved, free-floating, submerged
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attached packages of glochidia disguised as food for fish is called
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conglutinates
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simple metamorphosis cycle
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egg, nymph, adult (young look like adult)
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complex metamorphosis cycle
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egg, larve, pupa, adult (young dont look like adult)
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list four voltinism life cycles (4)
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multivoltine, bivoltine, univoltine, semivoltine
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four types of macroinvertebrate movements
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clinger, burrower, swimmer, climber
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four functional feeding groups
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shredder, collector, predator, scraper
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fish with extensive migration movement, but entirely in fresh water
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potamodromy
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fish with movement between fresh and salt water
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diadromy
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fish that move to freshwater to reproduce?
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anadromy
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fish that move to saltwater to reproduce?
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catadromy
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Species whose immature move to estuaries to eat for short periods
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amphidromy
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describe r-selected species?
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small, short life span, live in headwaters with frequent disturbances
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describe k-selected species?
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large, long life span, live in high order streams with infrequent disturbances
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5 barriers to aquatic organisms?
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jump, velocity, behavioral, exhaustion, depth
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