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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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animals of the benthos
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
oregon coast field trip sat may 30 th dusk geo orst edu oceans field html
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
required field trip guide dusk geo orst edu oceans field html
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
rocky shores
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
oregon rocky intertidal zone
Oregon Rocky Intertidal Zone

Oregon State Parks Guide

slide8
Spray Zone:periwinkle snails boundary between spray & intertidalrock louse & sea roachesscavenge organic debris
high tide zone filter feed seawater larvae are planktonic limpets buckshot or acorn barnacles
High Tide Zone:filter-feed seawater / larvae are planktoniclimpets, buckshot or acorn barnacles
fun fact for the day barnacle symbiosis

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

low tide zone tide pools dominated more by plants than by animals algaes sea urchins sea anemones
Low Tide Zone (Tide Pools):dominated more by plants than by animalsalgaes, sea urchins, sea anemones
exploring the tide pools and associated geology
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)

oregon rocky intertidal zone1
Oregon Rocky Intertidal Zone

Oregon State Parks Guide

animals of the rocky shores
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
rocky shores cont
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
sandy shores
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
feeders on sandy shores
Feeders on Sandy Shores
  • Clams
    • suspension feeding
  • Worms
    • deposit feeding by ingestion
  • Amphipods
    • deposit feeding on surface
  • Sand stars
    • carnivorous feeding on unlucky neighbors
important web sites
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