Ocean Characteristics
Which zone recieves enough light for photosynthesis?
Photic zone
What do primary consumers eat?
Producers
________ ___________ is the maximum population an ecosystem can support
Carrying Capacity
Which pigment makes algae have a brown color?
Fucoxanthin
What process increases Dissolved Oxygen (DO)?
Photosynthesis
What happens to density in water when the salinity increases?
Density increases
Which marine ecosystem is shallow, recieves lots of light and has high biodiversity?
Coral reef
If a predator population increases, what usually happens to the prey population?
It decreases
Which struture helps to anchor kelp?
Holdfast
What process decreases DO?
Respiration
Which type of water is denser: cold or warm water?
Cold water
Which adaptation helps organisms survive on a sandy shore?
Burrowing in the sand
In a lagoon, a bloom of harmful algae blocks sunlight and reduces producer growth.
How will this affect the food web?
Other animals in the food web will decline
Which is a true marine plant: Kelp or Seagrass?
Seagrass
If the Dissolved Oxygen of a water sample rises from 4 to 7mg/l, how much Oxygen was produced?
3 mg/l
Why can't photosynthesis occur below the photic zone?
Not enough light
Which marine ecosystem has organisms specially adapted to survive constantly crashing waves and strong water movement?
Rocky intertidal
Why are top predators like sharks less common than lower-level consumers? Hint: Think of what there may be less of as you go through the food chain
There is less energy
What structure helps kelp float toward sunlight?
Pneumatocysts or Gas Bladders
A light bottle measures +3 mg/l
A dark bottle measures -2 mg/l
What is the GPP?
5mg/l
Why does salty water sink more than freshwater?
Why do shallow coastal ecosystems tend to have higher biodiversity than deeper offshore areas?
More light and nutrients; leading to more growth and support
If zooplankton species were to decrease, what would happen to the animals that eat them?
They would decrease
Why can red algae survive deeper than brown or green algae?
They absorb blue/green light that travels deepest
Look at this Dissolved Oxygen pattern:
6am = 5mg/l
12pm = 11 mg/l
10PM = 6mg/l
Why does the DO peak at Noon?
More light/stronger light at noon