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Ecosystem (Rocky Shore)

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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Ecosystem (Rocky Shore)

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  1. Ecosystem (Rocky Shore) Rocky pool

  2. Rocky Shore habitat

  3. Zonation

  4. Snail Lichen Upper Shore algae Periwinkle

  5. Gastropod Barnacle Stalked barnacle Limpet Chiton Middle Shore

  6. sea cucumber Sea urchin Goby fish Brown Algae Sea Anemones Lower Shore

  7. Physical Factors • Tidal movement • Wave Action • Substrate

  8. Formation of tide

  9. Tidal movement • Desiccation • Difficulty in gas exchange (gill) • High temperature • Salinity fluctuation (river, rain, rock pool) • Illumination

  10. salinity Temperature Rock pool Tide in Tide out Time

  11. Wave Action • Wind speed and direction • Slope of shore or whether sheltered • Effect • Buffeting action (tearing ) • Washing away • Sprays water to upper tide

  12. Substrate • Soft substratum as muddy and sandy shore • Hard surface for attaching • Crack for shelter

  13. 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

  14. Cone shaped limpets

  15. Up shore Green algae Low shore Brown algae

  16. Shell, muscular food

  17. Inter-relationship in organisms • Predation • Competition • Commensalism • Mutualism • Parasitism

  18. 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)

  19. Other predator

  20. 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

  21. Marine biologist

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