Lecture 16 - Hydrothermal Vents Flashcards Preview

Marine Ecosystems > Lecture 16 - Hydrothermal Vents > Flashcards

Flashcards in Lecture 16 - Hydrothermal Vents Deck (10):
1

What are hydrothermal vents and where do they form

They form at mid ocean ridges and the subduction zones between oceanic and continental crust

2

What are the two types of vent?

Black and white smokers

3

Could you draw a diagram of how a hydrothermal vent works

maybe

4

What are the four types of light emmited at thermal vent?

Cystalloluminescence
Chemiluminescence
Triboluminescence
Sonoluminescence

5

What Chemosynthesis?

Energy obtained from hydrogen suplhide which powers life WITHOUT THE SUN :O

6

What is the equation for chemosynthesis

CO2 + S2- + O2 + H2O ---> CH2O + SO2 2-

7

Name the six key fauna found here

Octopus
Tubeworms
Dandelion Organisms
Zoarchid Fish
Shrimps
Mussels

8

Give the ecology of the tube worm - Pompeii Worm

Lives in the highest temp known for any organism. Head in seawater at 22oC and rear in vent water at 80oC. Has a carpet of bacteria on its back

9

Explain a relation of symbiosis in these areas

Giant white clams live on nutrients produced by symiotic bacteria in gills. Wedge their foot into cracks

10

Give ecology of hydrothermal vent shrimp

Will feed on copepods / amphipods but main nutrition by farming bacteria on enlarged gills. Form dense masses over vent gas to feed on bacteria