Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/12

Click to flip

12 Cards in this Set

  • Front
  • Back
what is the difference between marine biology and biological oceanography?
Marine biologists study the biology of marine organisms. Biological oceanographers study the ecology of marine organisms
What are the pelagic, benthic, photic and euphotic zones?
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
What is plankton, meroplankton, benthos and nekton?
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
what is primary production?
mostly photosynthesis but can include chemosynthesis
What are autotrophs/heterotrophs?
Autotrophs
Base of the pyramid - make their own food (photosynthesize)
Heterotrophs
Eat other organisms
What is the trophic pyramid
a graphical representation of
Who eats whom

Shape represents biomass at each level
What is the 10% rule?
10% Rule: Only ~10% of energy flows up the pyramid
90% of energy is lost at each level
Inside the food web what is the purpose of microbes?
to break down the wastes for use later
why is being a vegetarian more environmentally beneficial?
But eating lower on the food chain or just eating less meat will lessen environmental degradation
who are the primary producers?
Land plants, sea grass, algae and protists BUT MOSTLY PHYTOPLANKTON (90% of primary production)
What do phytoplankton need?
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
what causes large production?
Upwelling zones create blooms. mostly in the spring