2.04 Rocky Shores
1.What are rocky shores?
This is the place where there is a combination of the high and low tides on shore.
2.How are organisms on a rocky shore distributed?
They are distributed in horizontal zones on the shore.
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3.What three types of bedrock are typically found in a rocky shore ecosystem? 4.The three types of bedrock found in the rocky shore ecosystem are the rocky shore, sandy shore, and salt marsh.
5.What are the different zones of the rocky shore? (There are three main ones—sometimes a fourth upper zone is called the splash zone. The zones starting from the shoreline can also go by other names: upper = splash; middle = littoral; lower = sublittoral) The first zone is the splash zone, second is the upper shore, third is the middle shore, the last zone is the lower zone.
6.What plants are found in each zone? Be specific on listing them
•Lower-irish moss, rockweeds and algaue
7.What is the name of a plant-like species found in rocky shores? Algae and lichens are the plant like species found in rocky shores.
8.In which zone of the rocky shore would you most likely find only grasses and patches of lichens? You would find this in the splash zone.
9.What animals may be found in each zone?—be specific on listing them
•Upper- Rough Periwinkle
•Middle-rough periwinkles, smooth periwinkles, common periwinkles, crustaceans, hydroids, blue mussels, green sea urchins, dog whelks and purple starfish •Lower- common periwinkles, limpets, green sea urchins,
ispods and amphipods, sponges, hyrdroids, tube worms, horse mussels, brittle starfish, tunicates, sea anemones, scale worms, starfish, rock crabs, sea slugs
10.What type of animal uses the rocky shore for their ‘feeding’ grounds? The White tailed deer use the rocky shore to eat.
11.What factors shape the rocky shore?
Use this resource Some Animal Adaptations to answer question
12.What special features of adaptations do each of these organisms living in the rocky shore have which enable to survive this type of environment? •Seaweeds (4)- slimy mucus to prevent from losing to much water •Limpet (4)- muscular foot used to fix itself to a firm surface •Barnacle (4)- conical shape to reduce effect of wave action •Crab (4)-hide in holes between rocks
•Sea Squirts (use the next resource link to find out about sea squirts)
Use this resource Rocky Shore Ecosystem Areas to answer questions 12-13.
13.What kind of ‘resources’ do organisms on a rocky shore compete for? Think about the physical factors that fluctuate for the rocky shore organisms. They fight for clean water. Physical factor that will affect them is oil spills, erosion, chemicals, and trash.
14.Describe these three areas of the rocky shore:
•Rock pool-common prawns live here
•Platform- brittle stars
•Boulder field-acorn barnacle