rocky shore ecology

Question 1

rocky shore productivity

Answer 1

shallow water-> increased light -> increased mineral ions washed down/ brought in -> increased photosynthesis -> increased production

Question 2

challenge of rocky shores

Answer 2

tides
biotic/ abiotic factors will change up shore (vertical height)

Question 3

lower shore

Answer 3

low light (a)
oxygen variation (a)
fish/ crabs
competition

Question 4

upper shore

Answer 4

desiccation risk
temp variation
birds

Question 5

middle shore

Answer 5

salinity variation
wave action
larval dispersion (b)

Question 6

rocky shore community

Answer 6

seaweeds (producers)
lichen
periwinkles/ limpets (herbivores)
dog-whelks (carnivores)
barnacles, crabs etc