1. Ocean Habitats Chapter 12 Oregon 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 new Oregon Coastal Atlas –www.coastalatlas.net

3. Oregon Coast Field Trip - Sat., June 3rd dusk.geo.orst.edu/oceans/field.html  Be here by 8:30 a.m.  8:45 - Busses leave from Wilkinson lot  10:00 - HMSC Visitor Center  11:30 - Travel to Sea Rock & Lunch at Seal Rock park (bring your own)  12:30 - Seal Rock volcanic rocks and tide pools  1:30ish - Return to Corvallis  Back by ~3:00

4. Required Field Trip Guide dusk.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 9th –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. The Rocky Shore

7. Oregon Rocky Shore

8. Spray Zone: periwinkle snails boundary between spray & intertidal rock louse & sea roaches scavenge organic debris

9. High Tide Zone: filter-feed seawater / larvae are planktonic limpets, buckshot barnacles

10. Oregon Limpet

11. Chiton Tonicella mollusc related to sea snails, clams, limpets

12. Middle Tide Zone: more variety, competition for space goose 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 animals algaes, sea urchins, sea anemones

20. 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!  Be prepared with questions!!!

21. Oregon Algaes - Fachea

22. Oregon Algaes - Hallosaccion

23. Oregon Algaes - Mazzaella

24. Oregon Algaes - Postelsia

26. Oregon Sea Urchins

27. Oregon Anemone - Anthopleura

28. Oregon Anemone - Corynactis

29. Shore Crabs roam entire intertidal range Scavengers feeding on dead animals, seaweed

30. Oregon Crab - Pugettia

31. 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 barnacles –limpets

32. 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

33. 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

34. Clams

35. Worms, Amphipods, Sand Stars

36. Feeders on Sandy Shores  Clams –suspension feeding  Worms –deposit feeding by ingestion  Amphipods –deposit feeding on surface  Sand stars –carnivorous feeding on unlucky neighbors

37. 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/learn  Oregon Tidepool Page –hmsc.oregonstate.edu/projects/rocky/tidepool.html  HMSC Summer Experiences –hmsc.oregonstate.edu/classes/2006summer/