Exploring the Tide Pools and associated geology◆ Shoes with good tread/grip... Rocky Shores◆ spray zone – mostly dry, covered by water only during storms ◆ high tide zone – fairly dry,
Trang 1Coastal Habitats
Oregon Coast Field Trip
Trang 2Animals of the Benthos
◆ 98% of marine species are benthic
Trang 3Oregon Coast Field Trip -
Rock (bring your own;
eat lunch in busses if weather is
bad )
◆ 12 noon - Travel to HMSC
◆ 12:30 - HMSC Visitor Center
◆ 2:00 ish - Return to Corvallis
◆ Back by ~4:30 p.m.
Trang 4Exploring the Tide Pools (and associated geology)
◆ Shoes with good tread/grip
Trang 5Required Field Trip Guide
dusk.geo.orst.edu/oceans/field.html
– Turn assignment in to your TA
– Due by 5:00 p.m., June 3rd
– This constitutes LAB 9
Trang 6Rocky 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
Trang 7The Rocky Shore
Trang 8Oregon Rocky Shore
Trang 10High Tide Zone:
filter-feed seawater / larvae are planktonic
limpets, buckshot barnacles
Trang 11Oregon Limpet
Trang 12Chiton Tonicella
mollusc related to sea snails, clams, limpets
Trang 13Middle Tide Zone:
more variety, competition for space
goose barnacles, mussel, sea stars
Trang 14Oregon Barnacles on Mussel
Trang 15Oregon Sea Star Zonation
Trang 16Pisaster Sea Stars
Trang 17Henricia Sea Star
Trang 18Low Tide Zone (Tide Pools):
dominated more by plants than by animals
algaes, sea urchins, sea anemones
Trang 20Oregon Algaes - Fachea
Trang 21Oregon Algaes - Hallosaccion
Trang 22Oregon Algaes - Mazzaella
Trang 23Oregon Algaes - Postelsia
Trang 24Oregon Sea Urchins
Trang 26Oregon Anemone - Anthopleura
Trang 27Oregon Anemone - Corynactis
Trang 28Shore Crabs roam entire intertidal range Scavengers feeding on dead animals,
seaweed
Trang 29Oregon Crab - Pugettia
Trang 30Animals of the Rocky Shores
◆ high tide zone
– fairly dry, covered only by the highest
high tide
– buckshot barnacles
– limpets
Trang 31Rocky 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
Trang 32Sandy 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
Trang 33Clams
Trang 34Worms, Amphipods, Sand Stars
Trang 35Feeders on Sandy Shores
Trang 36Important Web Sites
◆ Field Trip Page and Guide
Trang 37Maybe 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!
Trang 38Oregon Coast Field Trip -
Rock (bring your own;
eat lunch in busses if weather is
bad )
◆ 12 noon - Travel to HMSC
◆ 12:30 - HMSC Visitor Center
◆ 2:00 ish - Return to Corvallis
◆ Back by ~4:30 p.m.