Oceans

Question 1

Warm Currents, Where, Color

Answer 1

-warm currents on the east coast (e.g. gulf stream)
-in warm currents water is very blue because no nutrients (zooplankton or phytoplankton), not very productive (lacks animal life)

Question 2

Cold Currents, Where, Color

Answer 2

-cold currents on the west coast (e.g California and Peru currents)
-cold water currents are green, have lots of nutrients, very productive, where we get most of our seafood

Question 3

What are kelp forests? Why are they important?

Answer 3

-temperate biodiversity hotspots
-can grow a meter a day
-common in cold and temperate seas
-anchored to the rocky bottom, fronds float to the surface because of CO2 and create a floating canopy
-need lights and nutrients
-along the coast of California and south America

Question 4

Sea Otters and Sea Urchins: Trophic Cascade

Answer 4

-trophic cascade: when the food chain is messed up from removing the top predators
-decreasing population of sea otters caused a spike in the sea urchin population

Question 5

Coastal management plans are inadequate…

Question 6

__% of the world’s population lives within 150 km (93 miles) of the coast

Answer 6

60%

Question 6

Hook and Line Fishing

Answer 6

good, all fish

Question 7

Longline Fishing

Answer 7

ok, used to catch marlin and tuna

Question 8

Purse-seine Nets

Answer 8

ok to bad, salmon and tuna, catch species that you don’t want

Question 9

Bottom Trawling

Answer 9

terrible, drag a net along the seafloor, destroys seafloor wildlife, shrimp, squid

Question 10

Bycatch

Answer 10

unintentional things that you catch in nets

Question 11

What is TED

Answer 11

turtle exclusion device, an opening in the nets that releases sea turtles to keep them from being caught