Lecture 15

Question 1

What type of feeding is most common in sediment?

Answer 1

deposit feeding

Question 2

When is suspension feeding more effective?

Answer 2

where flows are higher, allowing more food to make its way past

Question 3

Why switch from deposit to suspension feeding?

Answer 3

Decreased cost and increased benefit; suspension feeders get high value phytoplankton

Question 4

Suspension feeders are most efficient in which sediment type?

Answer 4

Sand

Question 5

What sediment do deposit feeders prefer?

Answer 5

Mud

Question 6

Changes with relative abundance with depth

Answer 6

-carnivores decline
-suspension-feeders decline
-deposit feeders increase

Question 7

Adaptation for predation of Fangfish

Answer 7

big teeth

Question 8

Adaptation for predation of Anglerfish

Answer 8

-big teeth
-big jaws

Question 9

Adapation for predation of Dragonfish

Answer 9

-big teeth
-big jaws
-bioluminescence

Question 10

Adaptation for Barrel- eye fish

Answer 10

-big teeth
-big jaws
-bioluminescence
-tubular eyes

Question 11

Shelf to abyss stability changes (seasonal)

Answer 11

-temperature
-salinity
-dissolved oxygen
-light

Question 12

Shelf to abyss stability changes (geological)

Answer 12

-glaciation
-erosion

Question 13

Which are biodiversity hot spots?

Answer 13

coral mounds, hot vents, cold seeps, whale falls, deep microbial diversity

Question 14

Characteristics of coral mounds

Answer 14

deep, cold water
-foundation species
-fisheries
-co2 increases
-hard substratum at original base

Question 15

What foundation species occur in the deep sea?

Answer 15

Deep-sea corals and sponges

Question 16

What threats do deep-sea species face

Answer 16

deep sea fishing, deep sea mining, and global heating