Shared Flashcard Set

Details

Cheasapeake bay watershed #2
Connor Hamed
22
Science
7th Grade
10/07/2013

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Cards

Term
what does SAV stand for
Definition
Submerged Aquatic Vegitation
Term
why are SAV important
Definition
food source
habitat
traps sediment
provides O2
Term
why are SAV dissapearing
Definition
sediment blocks sunlight
Too many nutrients cause algea
cheamicals kill it
Term
spat
Definition
a juvinal oyster
Term
Once an oyster is three inches long
Definition
you can legally harvest them
Term
what unique charecteristic do oysters have
Definition
they can change gender
Term
how do oysters eat
Definition
they filterfeed phytoplankton
Term
how long would it take oysters to filter the Ch. Bay
Definition
only a few days
Term
today that process takes
Definition
4-5 years
Term
factors of oysters demise
Definition
overharvesting
MSX/Dermo
Sedimentation
Term
plankton
Definition
organizams that passively drift in current
Term
phytoplankton
Definition
most nemourous plankton in the bay
Term
zooplankton
Definition
movements controlled by tidal current
Term
copepods
Definition
never grow bigger than type of a pencil
Term
food web
Definition
animals eating other animals
Term
what is another name for rockfish
Definition
Stripebass
Term
what does moratorium mean
Definition
a fishing ban
Term
what do mature stribebass eat
Definition
large ammounts of fish, eels, soft crabs
Term
where do rockfish live most of there lives
Definition
in the ocean
Term
where juvinile rockfish live
Definition
shallow marshes/ grass beds
Term
countershading
Definition
Term
why have rockfish made a great recovery
(2 reasons)
Definition
the 5 year moritorium
restoring traditional spawning areas
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