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Ecosystem (Rocky Shore). Rocky pool. Rocky Shore habitat. Zonation. Snail. Lichen. Upper Shore. algae. Periwinkle. Gastropod. Barnacle. Stalked barnacle. Limpet. Chiton. Middle Shore. sea cucumber. Sea urchin. Goby fish. Brown Algae. Sea Anemones. Lower Shore.

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upper shore

Snail

Lichen

Upper Shore

algae

Periwinkle

middle shore

Gastropod

Barnacle

Stalked

barnacle

Limpet

Chiton

Middle Shore
lower shore

sea cucumber

Sea urchin

Goby fish

Brown Algae

Sea Anemones

Lower Shore
physical factors
Physical Factors
  • Tidal movement
  • Wave Action
  • Substrate
tidal movement
Tidal movement
  • Desiccation
  • Difficulty in gas exchange (gill)
  • High temperature
  • Salinity fluctuation (river, rain, rock pool)
  • Illumination
rock pool

salinity

Temperature

Rock pool

Tide

in

Tide

out

Time

wave action
Wave Action
  • Wind speed and direction
  • Slope of shore or whether sheltered
  • Effect
    • Buffeting action (tearing )
    • Washing away
    • Sprays water to upper tide
substrate
Substrate
  • Soft substratum as muddy and sandy shore
  • Hard surface for attaching
  • Crack for shelter
adaptation
Adaptation

Against desiccation, wave and salinity

  • Retreat to sheltered areas
  • Protective cover
  • Internal gill
  • Strong adhesive power (byssus threads, muscular food)
  • Flattened body
  • Red pigment in algae for deep water illumination
slide15

Up shore

Green algae

Low shore

Brown algae

inter relationship in organisms
Inter-relationship in organisms
  • Predation
  • Competition
  • Commensalism
  • Mutualism
  • Parasitism
food web
Food Web

. 1 = Detritus, 2 = plankton, 3 = benthic algae, 4 = acorn barnacles, 5 = Mytilusedulis (mussels), 6 = Pollicieps, 7= chitons, 8 = limpets, 9 = Tegula, 10 = Littorina, 11 = Thais, 12 = Pisaster, 13 = Leptasterias. (Diagram from Begon, Harper et al 1990)

related web site
Related web site
  • Rocky Shore — Plants and Animals http://www.tip.net.au/~sef/amanda/rsdeszon.htm
  • Intertidal Habitat: Rocky Shores

http://darter.ocps.k12.fl.us/classroom/klenk/Rocky.htm

  • Intertidal Organisms

http://redbaron.bishops.ntc.nf.ca/wells/fieldtrp/survey.htm

  • Intertidal Zone: Rocky — California coasthttp://www.branson.org/www.branson.org/depts/science/marbio/Intertidal_Intro.html