Larval Transport

Question 1

What is transport

Answer 1

Horizontal translocation of larvae betweeb points in space
Behaviour + physics

Question 2

What is dispersal

Answer 2

Spread of larvae from spawning to settlement
Spawning + transport + survival+settlement

Question 3

What is connectivity

Answer 3

Spread of larvae
Settlement survival and reproduction
Dispersal+post settlment survival

Question 4

Name 4 steps of dispersal

Answer 4

Dispersal from benthic habitat
Feeding escape retention
Migration towards juvenile habitat
Colonisation of juvenile habitat

Question 5

How far can larvae disperse?(3)

Answer 5

Maximum bound by pelagic distribution
Not all passive
Long duration but restricted dispersal:larvae in deep water

Question 6

What are limitations of wind ekman

Answer 6

Low wind no spiral
Low depth downwind movement
Flow limited by coast downwind movement

Question 7

When does ekman transport occur

Answer 7

When wind blows over deep water column in case the direction of gradient of current is at 45 degrees
From wind direction

Question 8

where does ekman flow occur?

Answer 8

in coastal zones with narrow continental shelves where there is a deep water column

Question 9

what is upwelling? (5)

Answer 9

wind is coming from north
surface flow of water offshore
deeper water moves to surface
deeper water colder than surface
planktonic organisms caught in surface waters transported offshore

Question 10

what is downwelling?

Answer 10

wind coming from south
surface water pushed towards shore
sinks to deeper layer
larvae found in surface water transported offshore