PLATYHELMINTHES

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Marine Biology Fourth Edition CastroHuber Chapt
er 10 Image Slides
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Habitats are natural environments where organisms
live.The nature of a community is determined by
both biotic and abiotic factors.Corals of the
same species grow differently in different
habitats.
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Population explosions if growth is unrestrained.
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Sea urchin population explosion
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Symbiosis
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Food chains can be part of a food web.
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Organisms in a food web may be group into
categories according to their trophic level.
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A lot of energy is required at the bottom of a
food web to sustain organisms at the top. On
average 90 energy is lost at each step.
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Primary production supplies food at the (fixes
Carbon) at the base of a trophic pyramid.
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Phytoplankton (primary producers) can be measured
by measuring the amount of chlorophyll.
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The Carbon Cycle
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The Nitrogen Cycle
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Marine Biology Fourth Edition CastroHuber Chapt
er 11 Image Slides
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Rocky shores organisms eitherrun and hide or
clam up during exposure to low tide.
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Organisms may grow differently when exposed to
different levels of wave shock.
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Seaweeds use holdfasts.
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Mussels use byssal threads.
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Space is the major limiting factor in the
intertidal zone.
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Sea stars maintain the diversity of the middle
intertidal zone.
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Biological interactions can determine the makeup
of a marine ecosystem.
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Sediments can be classified based on the size of
the particles.
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A sandy beach food web.
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Conation patterns of a sandy beach.