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chesapeake bay water shed #2
David Sobczak
44
Science
7th Grade
10/07/2013

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Cards

Term
what doe SAV stand by?
Definition
submege acuaitc vegitation
Term
Why are SAV important?
Definition
Food source, habitat, traps sediment, provides oxygen
Term
why are SAV dissappering?
Definition
sediment blocks the sunlight, nutrients, chemicals
Term
Blue craps begin their lives as what?
Definition
Tiny Larvae
Term
what is a sook?
Definition
a female crab
Term
the male crab will carry the female crab beeath his body until she...
Definition
Molts
Term
what are small crabs called?
Definition
Zoea
Term
Zoea are considered what?
Definition
Zooplankton
Term
Lucky ones eventually grow into a nother larval form called....
Definition
Megalops
Term
crabs live for about how many years?
Definition
3 years
Term
Atlantic blue crabs have ten legs each one has it's own specific function
Definition
the two front claws are used to grab food the other six legs are used for walking and the last two are used for swiming
Term
the blue crabs shell is like it's own personal coat of armor what is it called?
Definition
Exoskeleton
Term
it is estimated about three out of four crabs (75%) legal sized crabs in the chesapeake bay are caught and what?
Definition
eaten each year
Term
Juvenile attached oysters are called..
Definition
spat
Term
when can oysters be legally caught?
Definition
when their three inches long
Term
at what age are oysters bisexual?
Definition
two to three months old
Term
how do oysters eat?
Definition
they suck water into their shells and filter out small plants called phytoplankton.
Term
oyster were once so abundant that they what?
Definition
filter the entire water
Term
what percent of oysters are left?
Definition
1%
Term
what are the several factors that led to oyster's demise?
Definition
Overharvesting, diseases, and sediment caused by land development.
Term
the two most common diseases are?
Definition
Dermo and MSX
Term
plankton are defined as...
Definition
organisms which passively drift with the current.
Term
microscopic plants called phytoplankton are by far what?
Definition
the most numerous plankton in the bay
Term
zooplankton are animals whose movement are controlled by what?
Definition
by tidal current
Term
many zooplankton are copepods which never grow to be bigger than what?
Definition
a tip of a pencil
Term
food web
Definition
food chain
Term
what are rockfish?
Definition
striped bass
Term
from all time lows what happen?
Definition
a 5 year fishing moratorium
Term
what do rockfish eat?
Definition
fish, soft crabs and eels
Term
where do rockfish live most of their lives?
Definition
in the saltwater of the ocean
Term
most juvenile fish begin their lives were?
Definition
shallow marshes and grass beds
Term
a system of camouflage?
Definition
counter shading
Term
in 1985 what happened?
Definition
a 5 year moratorium was put in place which prohibited fishing for striped bass
Term
how do menhaden eat?
Definition
they suck in their food with their mouths (filter feeders)
Term
what do menhaden eat?
Definition
phytoplankton (algae)
Term
what are the predators of menhaden?
Definition
Rockfish and Blue fish
Term
what do humans use menhaden for?
Definition
bait (crab, and fish) oil on food like turkey and bacon, and for animal food like dog food.
Term
what is omega protein and what do they do?
Definition
they are a company that processes fish.
Term
what do diamondback terrapins eat
Definition
mussles, snails, clams and fish
Term
diamondback terripans are what
Definition
only turttle in the world that lives in brackish water
Term
what determines the age on diamonback tuttles
Definition
the rigs on the shell
Term
who can be larger female or male
Definition
female
Term
are diamondback turttles edebal
Definition
yes they are in soups
Term
what determines the gender for diamondback turttles
Definition
the tempeture (hot=female, and cold=male)
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