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Coastal Habitats Chapter 12 Oregon Coast Field Trip

Coastal Habitats Chapter 12 Oregon Coast Field Trip. Animals of the Benthos. 98% of marine species are benthic Hydrothermal vents Coral reefs Rocky shore Sandy shore Oregon info at the Oregon Coastal Atlas www.coastalatlas.net. Be here by 7:15 a.m.

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Coastal Habitats Chapter 12 Oregon Coast Field Trip

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  1. Coastal HabitatsChapter 12Oregon Coast Field Trip

  2. Animals of the Benthos • 98% of marine species are benthic • Hydrothermal vents • Coral reefs • Rocky shore • Sandy shore • Oregon info at the Oregon Coastal Atlas • www.coastalatlas.net

  3. Be here by 7:15 a.m. 7:30 - Busses leave from Wilkinson lot 8:30 - HMSC Visitor Center 10:00 - Travel to Seal Rock State Park 10:30 - Seal Rock volcanic rocks and tide pools 12:00 - Lunch at Seal Rock (bring your own) 12:30ish - Return to Corvallis Back by ~2:00 Oregon Coast Field Trip - Sat., May 30thdusk.geo.orst.edu/oceans/field.html

  4. Required Field Trip Guidedusk.geo.orst.edu/oceans/field.html • Answers to bolded questions in guide. Please TYPE your report!! • Turn assignment in to your TA • Due by 5:00 p.m., June 5th • This constitutes LAB 9

  5. Rocky Shores • spray zone • mostly dry, covered by water only during storms • high tide zone • fairly dry, covered only by the highest high tide • middle tide zone • equally exposed & covered during all high & low tides • low tide zone • mostly wet

  6. Oregon Rocky Intertidal Zone Oregon State Parks Guide

  7. Oregon Rocky Intertidal

  8. Spray Zone:periwinkle snails boundary between spray & intertidalrock louse & sea roachesscavenge organic debris

  9. High Tide Zone:filter-feed seawater / larvae are planktoniclimpets, buckshot or acorn barnacles

  10. Oregon Limpet

  11. Chiton Tonicellamollusc related to sea snails, clams, limpets

  12. Middle Tide Zone:more variety, competition for spacegoose barnacles, mussel, sea stars

  13. Oregon Barnacles on Mussel

  14. Fun Fact for the Day: Barnacle symbiosis male & female attached to each other through most of life until male reduced to size of microscopic penis

  15. Oregon Sea Star Zonation

  16. Pisaster Sea Stars

  17. Henricia Sea Star

  18. Low Tide Zone (Tide Pools):dominated more by plants than by animalsalgaes, sea urchins, sea anemones

  19. Exploring the Tide Pools (and associated geology) • Shoes with good tread/grip • Extra socks • Rubber boots, if you have them • Take your field trip guide with you! • Print out this PPT too if you like! (change “output” to black & white for best results)

  20. Oregon Algaes - Fachea

  21. Oregon Algaes - Hallosaccion

  22. Oregon Algaes - Mazzaella

  23. Oregon Algaes - Postelsia

  24. Oregon Sea Urchins

  25. Oregon Anemone - Anthopleura

  26. Oregon Anemone - Corynactis

  27. Shore Crabs roam entire intertidal rangeScavengers feeding on dead animals, seaweed

  28. Oregon Crab - Pugettia

  29. Oregon Rocky Intertidal Zone Oregon State Parks Guide

  30. Animals of the Rocky Shores • spray zone • mostly dry, covered by water only during storms • periwinkle snail • rock louse • high tide zone • fairly dry, covered only by the highest high tide • Buckshot or acorn barnacles • limpets

  31. Rocky Shores cont. • middle tide zone • equally exposed & covered during all high & low tides • more variety, competition for space • goose barnacle, mussel, sea star • sea anemone, hermit crabs, sea urchins (tidal pools) • low tide zone • mostly wet • surf grass, algae, seaweeds • sea urchins, sea anemones

  32. Sandy Shores • no fixed surface to attach to • different adaptations protect animals from fluctuations in • temperature • salinity • water levels (so as not to dry out) • clams, worms, sand stars, amphipods

  33. Clams

  34. Worms, Amphipods, Sand Stars

  35. Feeders on Sandy Shores • Clams • suspension feeding • Worms • deposit feeding by ingestion • Amphipods • deposit feeding on surface • Sand stars • carnivorous feeding on unlucky neighbors

  36. Important Web Sites • Field Trip Page and Guide • dusk.geo.orst.edu/oceans/field.html • dusk.geo.orst.edu/oceans/OC103FieldTrip.pdf • Oregon Coastal Atlas • www.coastalatlas.net • HMSC Summer Experiences • hmsc.oregonstate.edu/summer.html

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