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Ecology of a Rocky Shore Community

Ecology of a Rocky Shore Community. Zones of Life along a Rocky Shore. Why are some animals and plants located in special zones and not all over?. Adaptations for life on a high energy rocky shoreline. High energy waves Low tide exposure. Animals on a typical New England rocky shore.

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Ecology of a Rocky Shore Community

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  1. Ecology of a Rocky Shore Community

  2. Zones of Life along a Rocky Shore • Why are some animals and plants located in special zones and not all over?

  3. Adaptations for life on a high energy rocky shoreline • High energy waves • Low tide exposure

  4. Animals on a typical New England rocky shore

  5. Asian Shore Crab • Periwinkle snails • Blue Mussels • Purple Sea Urchin • Rock Barnacles • Common Sea Star

  6. Algae on a typical New England rocky shore • Fucus • Knotted Wrack • Ulva • Chondrus • Kelp

  7. Adaptations to life on a rocky shore lineAdapting to Wave Shock • Barnacles • Cements shell to rock • Snails • Use a suction cup like foot

  8. Adaptations to Wave Shock • Sea Stars and Urchins • Tube feet with suction cup ends

  9. Adaptations to Wave Shock • Blue Mussels • Byssel Threads ( strong cables)

  10. Adaptations to Wave Shock • Crabs and Lobsters • Wedge into rock spaces • Hide under rocks

  11. Adaptations to Wave Shock • Sea Weeds (macroalgae) • Hold fasts attach to rocks

  12. Rocky shore animal feeding adaptations • Barnacles • Filter food with feathery legs (filter feeder) • Snails • Scrape food with a radula - tongue with teeth (grazers and carnivores) • Sea stars • Use tube feet and stomach

  13. Reproduction adaptations

  14. Barnacles are hermaphrodites • Each barnacle has both male and female reproductive organs • Marine snails mate and deposit egg cases • Sea stars and Urchins broad cast eggs and sperm into the water • Marine Arthropods like crabs and lobsters mate. Female attracts male using pheromones. • After the female molts and mates with the male, eggs will later be deposited on underside of her abdomen and carried until they hatch.

  15. Lobster with eggs • Green crab with eggs

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