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marine biology

test 1/8/15

Intertidal zone Area of shoreline between high and low tides
Sessile Organism attached to a substrate
Desiccated something dried out
Vertical zonation noticeable horizontal bands of organisms living within a certain range in the intertidal zone
Ecological succession a gradually increasing occupation of new organisms into a specific area
What are two major types of substrates? 1. Rocky 2. Sandy/muddy
What is the difficulty and benefit of the wave action in the intertidal zone? difficulty - in high tide it can wash away adapted organisms; its benefits - waves can wash away accumulated wastes and bring nutrients into an area
How does a non sessile organism use high tide to avoid being thrown by the waves? They can roll with the waves or move to a crevice where it will be protected
Know about temperature and salinity in a tide pool and how it changes with the tides During low tide the tide pool becomes more vulnerable to temperatures, salinity levels can decrease with rain because of fresh water, but increase when heat evaporates the water; temperature will rise from heat or become freezing in colder temperature
Explain why a wave bends or refracts from shore if it comes in at an angle As waves come closer to shore the majority of the wave is moving slowly, but the furthest edge from shore is moving more quickly to catch up
How does the canyon or sandbar affect wave action? Sandbar causes waves to break, Canyon causes waves to bend
Why space is an important factor in the intertidal zone? it is the one thing that can claim survival for an organism.
Why does salinity and temperature affect the upper and lower limits of where organisms can live? during low tide temperatures can get extremely cold or extremely hot, salinity can increase due to water evaporation and decrease during rainy weather
What is a climax community? final stage of succession, remaining relatively unchanged until destroyed by biotic or abiotic factors
Which zone has the greatest diversity? Upper, Lower, or Middle? Lower
What are limiting resources in the Upper, Middle, and Lower zones? Upper - water, Middle - space/air, Lower - light
Which sediment allows water to move through more slowly? mud
Why isn't the zonation noticeable in the muddy internal zone? the organisms bury themselves in it
Created by: a.allsup