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Notes for Quiz 5 - 20:39 Abundance,biomass,diversity o...

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20:39 Patterns in the Deep Sea Abundance, biomass, diversity o Abundance and biomass decrease with depth no photosynthesis no primary production o size decrease with depth scavenger fish increase with depth non scavengers (predators) decrease with depth o Diversity  Highest at middle depths  Lower at higher and lower depths Stability in deep sea allows animals to evolve over time Very large space therefore more diversity Deep Sea  Who lives there o More deposit feeders (80%) and less filter feeders o Crustaceans, polychaetes, cusk eels Food web structure o Based on POM: fecal pellets, detritus, bacteria o Eaten by deposit feeders
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o Eaten by larger feeders How are community structure effected by the environment Adaptations Anatomical characterisitcs o Avg mesopelagic organism More sensitive eyes Bioluminescence More colorful
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