Intertidal Ecology III

Question 1

what are causes of intertidal zonation?

Answer 1

• wave exposure
• dessication
• temperature
• competition
• predation
• larval settlement
• grazing

Question 2

are are local distribution patterns created, and what do they create?

Answer 2

• created by physical factors (topography, wave action)
• created by biological factors (sweeping algae, competition)
• creates open space recolonization, produces different substrate, alters physical conditions

Question 3

what are some physical factors which influence local patchiness distribution patterns?

Answer 3

Toppgraphy:
-nature
-slope
-exposure of rock surfaces (sandstone vs granite, texture and thermal characters)
-north south exposure
Wave:
-action

Question 4

what are some biological factors which influence intertidal patchiness

Answer 4

• clone wars (anemones, fighting genotypes)
• territorality
• competition
• predation