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Chesapeake Bay watershed #2
BooBoo Lizana
42
Science
7th Grade
10/07/2013

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Cards

Term
What does SAV stand for.
Definition
Submerged Aquatic Vegitation
Term
Why are SAVs so important
Definition
Food source,Habitat, traps sediment protects floor from erosion, provides h2o
Term
Why are SAVs dissapearing
Definition
sediment smothers tem and blocks sunlight,to many nutrients, algae bloom-blocks sunlights, chemicals kill it
Term
Crustaceans are?
Definition
Term
larvae
Definition
the first stage of a blue crab
Term
molting
Definition
when a crustacean gets to big for it shell
Term
crabs development
Definition
zoea x3, megalopa 30x, and 1/3x
Term
types of zooplankton are...
Definition
megalops and zoea
Term
zoeas are...
Definition
small larvae crabs
Term
megalops are...
Definition
another form or larvae that come after the zoea
Term
How long do crabs live for?
Definition
average of three years
Term
How many legs do crabs have
Definition
ten
Term
crabs have and exoskeleton
Definition
a skeleton on the outside of your body
Term
over harvesting
Definition
3/4 legal crabs are caught and eaten each year
Term
spat
Definition
juvinial oyster
Term
can oysters be legally caught and eaten?
Definition
yeah it has to be three inches long
Term
can oysters change gender?
Definition
yeah they are bisextual
Term
oysters eat by sucking water into their shells and
Definition
they filter out small plants called phyto plankton
Term
oyster use to be so abundant, how long would it take to fliter the bay?
Definition
they could fliter the entire bay in a few days
Term
how much of the population is left?
Definition
now their is only 1% of the population left
Term
why are oysters dieing so rapidly?
Definition
overharvesting, MSX, and dermo
Term
does sediment cover habitats?
Definition
yes and it prevents larva oysters to attaching themselves to a hard surface.
Term
plankton are...
Definition
organisms whish passively drit with the current.
Term
phytoplankton are...
Definition
by far the most numerous plankton in the bay.
Term
Zooplankton are...
Definition
animals whose movement are controlled by tidal current
Term
zooplankton are copepods
Definition
that never grom larger than the tip of a pencil
Term
food web...
Definition
the circle of life
Term
what is another name for rockfish?
Definition
striped bass
Term
what is another name for striped?
Definition
rockfish
Term
what is a moratorium?
Definition
its banning something
Term
what do striped bass eat
Definition
soft crabs fish and other animals
Term
where do mature rockfish spend their live?
Definition
in the ocean
Term
where do young rockfish live?
Definition
the marshed and wetlands because of protection
Term
counter shading...
Definition
is camouflage in all the right places
Term
why have rockfish made a great recovery
Definition
restored spawnning beds and five year moratorium
Term
how do menhaden eat?
Definition
by opening their mouths wide and consuming as much as possible.
Term
what do menhaden eat?
Definition
they eat plankton and algae.
Term
what are menhadens predators?
Definition
bluefish, and rockfish are the main predators.
Term
what do humans use them for?
Definition
food products, animal food, oils. fertilizers, lipsticks, etc.
Term
what is omega protein and what do they do.
Definition
they are a company that takes t fish oils and makes vitamins out of them
Term
what do dimondbacks eat?
Definition
mollusks,clams,snails,musscles,fish,worms
Term
is the dimond back the only turtle that lives in brackish water?
Definition
yes
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