Ecosystem (Rocky Shore) Rocky pool. Rocky Shore habitat.

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Ecosystem (Rocky Shore) Rocky pool

Transcript of Ecosystem (Rocky Shore) Rocky pool. Rocky Shore habitat.

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Ecosystem (Rocky Shore)

Rockypool

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Rocky Shore habitat

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Zonation

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Upper Shore

Periwinkle algae

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Middle Shore

BarnacleStalked

barnacle

Chiton

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Lower Shore

Brown AlgaeSea Anemones

Sea urchin

Goby fish

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Physical Factors

Tidal movement

Wave Action

Substrate

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Formation of tide

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Tidal movement Desiccation Difficulty in gas exchange (gill) High temperature Salinity fluctuation (river, rain,

rock pool) Illumination

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Rock pool

Time

Tide in

Tideout

Temperature

salinity

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Wave Action

Wind speed and direction Slope of shore or whether sheltered

Effect Buffeting action (tearing ) Washing away Sprays water to upper tide

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Substrate

Soft substratum as muddy and sandy shore

Hard surface for attaching Crack for shelter

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Adaptation

Against desiccation, wave and salinity Retreat to sheltered areas Protective cover Internal gill Strong adhesive power (byssus threads, muscular f

ood) Flattened body Red pigment in algae for deep water illumination

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Cone shaped limpets

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Up shore

Green algae

Low shore

Brown algae

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Shell, muscular food

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Inter-relationship in organisms

Predation Competition Commensalism Mutualism Parasitism

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Food Web

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

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Other predator

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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 coast

http://www.branson.org/www.branson.org/depts/science/marbio/Intertidal_Intro.html

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Marine biologist