Coastal Habitats Oregon Coast Field Trip

1. Coastal HabitatsOregon 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. Oregon Coast Field Trip - Sat., May 21st 2011dusk.geo.orst.edu/oceans/field.html • Be here by 7:15 a.m. • 7:30 - Busses leave from Wilkinson lot • 10:00 - Seal Rock volcanic rocks and tide pools • 11:30 - Lunch at Seal Rock (bring your own; eat lunch in busses if weather is bad) • 12 noon - Travel to HMSC • 12:30 - HMSC Visitor Center • 2:00ish - Return to Corvallis • Back by ~4:30 p.m.

4. Exploring the Tide Pools (and associated geology) Shoes with good tread/grip Extra socks Rubber boots, if you have them Pillow/stuffed animal Take your field trip guide with you! Be prepared with questions!!!

5. Required Field Trip Guidedusk.geo.orst.edu/oceans/field.html • Answers to bolded questions in guide • Turn assignment in to your TA • Due by 5:00 p.m., June 3rd • This constitutes LAB 9

6. 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

7. The Rocky Shore

8. Oregon Rocky Shore

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

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

11. Oregon Limpet

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

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

14. Oregon Barnacles on Mussel

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

20. Oregon Algaes - Fachea

21. Oregon Algaes - Hallosaccion

22. Oregon Algaes - Mazzaella

23. Oregon Algaes - Postelsia

24. Oregon Sea Urchins

26. Oregon Anemone - Anthopleura

27. Oregon Anemone - Corynactis

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

29. Oregon Crab - Pugettia

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 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

37. Maybe we’ll see a little guy like this in the woods near the parking lot! One of the bus drivers took this photo there in 2006!

38. Oregon Coast Field Trip - Sat., May 21st 2011dusk.geo.orst.edu/oceans/field.html • Be here by 7:15 a.m. • 7:30 - Busses leave from Wilkinson lot • 10:00 - Seal Rock volcanic rocks and tide pools • 11:30 - Lunch at Seal Rock (bring your own; eat lunch in busses if weather is bad) • 12 noon - Travel to HMSC • 12:30 - HMSC Visitor Center • 2:00ish - Return to Corvallis • Back by ~4:30 p.m.