Coastal Habitats Oregon Coast Field Trip. Animals of the Benthos 98% of marine species are benthic ...
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Transcript of Coastal Habitats Oregon Coast Field Trip. Animals of the Benthos 98% of marine species are benthic ...
![Page 1: Coastal Habitats Oregon Coast Field Trip. Animals of the Benthos 98% of marine species are benthic Hydrothermal vents Coral reefs Rocky shore.](https://reader036.fdocuments.in/reader036/viewer/2022062519/56649d775503460f94a5898d/html5/thumbnails/1.jpg)
Coastal Habitats
Oregon Coast Field Trip
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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
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Oregon Coast Field Trip - Sat., May 21st 2011
dusk.geo.orst.edu/oceans/field.htmldusk.geo.orst.edu/oceans/field.html Be here by 7:15 a.m.Be here by 7:15 a.m. 7:30 - Busses 7:30 - Busses leaveleave from from
Wilkinson lotWilkinson lot 10:00 - Seal Rock 10:00 - Seal Rock
volcanic rocks and tide volcanic rocks and tide poolspools
11:30 - Lunch at Seal 11:30 - Lunch at Seal Rock Rock (bring your own; eat lunch in busses if weather is bad)
12 noon - Travel to 12 noon - Travel to HMSCHMSC
12:30 - HMSC Visitor 12:30 - HMSC Visitor CenterCenter
2:002:00ishish - Return to - Return to CorvallisCorvallis
Back by ~4:30 p.m.Back by ~4:30 p.m.
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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!!!
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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
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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
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The Rocky Shore
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Oregon Rocky Shore
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Spray Zone:periwinkle snails boundary between spray &
intertidalrock louse & sea roaches scavenge organic debris
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High Tide Zone: filter-feed seawater / larvae are planktonic
limpets, buckshot barnacles
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Oregon Limpet
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Chiton Tonicellamollusc related to sea snails, clams, limpets
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Middle Tide Zone: more variety, competition for space
goose barnacles, mussel, sea stars
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Oregon Barnacles on Mussel
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Oregon Sea Star Zonation
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Pisaster Sea Stars
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Henricia Sea Star
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Low Tide Zone (Tide Pools): dominated more by plants than by animals
algaes, sea urchins, sea anemones
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Oregon Algaes - Fachea
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Oregon Algaes - Hallosaccion
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Oregon Algaes - Mazzaella
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Oregon Algaes - Postelsia
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Oregon Sea Urchins
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Oregon Anemone - Anthopleura
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Oregon Anemone - Corynactis
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Shore Crabs roam entire intertidal rangeScavengers feeding on dead animals,
seaweed
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Oregon Crab - Pugettia
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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
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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
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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
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Clams
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Worms, Amphipods, Sand Stars
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Feeders on Sandy Shores
Clams – suspension feeding
Worms– deposit feeding by ingestion
Amphipods– deposit feeding on surface
Sand stars– carnivorous feeding on unlucky neighbors
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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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Maybe we’ll see a little guy like this Maybe we’ll see a little guy like this in the woods near the parking lot! in the woods near the parking lot!
One of the bus drivers took this photo there in 2006!One of the bus drivers took this photo there in 2006!
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Oregon Coast Field Trip - Sat., May 21st 2011
dusk.geo.orst.edu/oceans/field.htmldusk.geo.orst.edu/oceans/field.html Be here by 7:15 a.m.Be here by 7:15 a.m. 7:30 - Busses 7:30 - Busses leaveleave from from
Wilkinson lotWilkinson lot 10:00 - Seal Rock 10:00 - Seal Rock
volcanic rocks and tide volcanic rocks and tide poolspools
11:30 - Lunch at Seal 11:30 - Lunch at Seal Rock Rock (bring your own; eat lunch in busses if weather is bad)
12 noon - Travel to 12 noon - Travel to HMSCHMSC
12:30 - HMSC Visitor 12:30 - HMSC Visitor CenterCenter
2:002:00ishish - Return to - Return to CorvallisCorvallis
Back by ~4:30 p.m.Back by ~4:30 p.m.