Download - Ecosystem (Rocky Shore)
Ecosystem (Rocky Shore)
Rockypool
Rocky Shore habitat
Zonation
Upper Shore
Periwinkle algae
Middle Shore
BarnacleStalked
barnacle
Chiton
Lower Shore
Brown AlgaeSea Anemones
Sea urchin
Goby fish
Physical Factors
Tidal movement
Wave Action
Substrate
Formation of tide
Tidal movement Desiccation Difficulty in gas exchange (gill) High temperature Salinity fluctuation (river, rain,
rock pool) Illumination
Rock pool
Time
Tide in
Tideout
Temperature
salinity
Wave Action
Wind speed and direction Slope of shore or whether sheltered
Effect Buffeting action (tearing ) Washing away Sprays water to upper tide
Substrate
Soft substratum as muddy and sandy shore
Hard surface for attaching Crack for shelter
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
Cone shaped limpets
Up shore
Green algae
Low shore
Brown algae
Shell, muscular food
Inter-relationship in organisms
Predation Competition Commensalism Mutualism Parasitism
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)
Other predator
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
Marine biologist