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12 Cards in this Set
- Front
- Back
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what is the difference between marine biology and biological oceanography?
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Marine biologists study the biology of marine organisms. Biological oceanographers study the ecology of marine organisms
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What are the pelagic, benthic, photic and euphotic zones?
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Pelagic-habitats in the water column
Benthic- habitats on the sea floor Photic-where light can penetrate (?) Euphotic- where enough light reaches for photosynthesis to still be able to take place Euphotic |
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What is plankton, meroplankton, benthos and nekton?
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Plankton (pelagic realm)
Floaters and drifters Nekton (pelagic realm) Free swimmers Benthos (benthic realm) Bottom dwellers Attached to bottom or free moving Plankton (pelagic realm) Floaters and drifters Nekton (pelagic realm) Free swimmers Benthos (benthic realm) Bottom dwellers Attached to bottom or free moving Plankton (pelagic realm) Floaters and drifters Nekton (pelagic realm) Free swimmers Benthos (benthic realm) Bottom dwellers Attached to bottom or free moving Plankton (pelagic realm) Floaters and drifters Nekton (pelagic realm) Free swimmers Benthos (benthic realm) Bottom dwellers Attached to bottom or free moving Meroplankton: Organisms that spend only part of their life cycle in the water column |
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what is primary production?
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mostly photosynthesis but can include chemosynthesis
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What are autotrophs/heterotrophs?
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Autotrophs
Base of the pyramid - make their own food (photosynthesize) Heterotrophs Eat other organisms |
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What is the trophic pyramid
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a graphical representation of
Who eats whom Shape represents biomass at each level |
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What is the 10% rule?
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10% Rule: Only ~10% of energy flows up the pyramid
90% of energy is lost at each level |
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Inside the food web what is the purpose of microbes?
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to break down the wastes for use later
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why is being a vegetarian more environmentally beneficial?
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But eating lower on the food chain or just eating less meat will lessen environmental degradation
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who are the primary producers?
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Land plants, sea grass, algae and protists BUT MOSTLY PHYTOPLANKTON (90% of primary production)
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What do phytoplankton need?
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Light: needs to stay up in the photic zone…special adaptations
Nutrients: Finds it near coasts, upwelling zones (aeolian dust) …special adaptations A carbon source: Uses CO2 plenty dissolved in water from atmosphere How do plankton stay in the light? Buoyancy – most contain a small drop of oil (less dense than water) Frictional Resistance – high surface area to volume ratio by being small…being ornate (in warm less dense water) Turbulence within the upper mixed later – top 200 m – above the thermocline Zooplanton – have some ability to ‘swim’ and migrate up and down in waster column |
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what causes large production?
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Upwelling zones create blooms. mostly in the spring
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