what’s for lunch?
Post on 04-Jan-2016
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What’s For Lunch?
An Awesome Activity with Food Webs!
Review Key Terms: Trophic Levels
• Producers
• Consumers
• Decomposers
• Scavengers
Sample Food Web• Using the following organisms, try to organize the
organisms into a food web.
– human– bald eagle– phytoplankton– mayfly– trout– dragonfly– frog– snake– salamander
Human Bald Eagle
Phytoplankton Mayfly
Trout Dragonfly
Frog Snake
Salamander
Sample Food Web• Using the following organisms, try to organize the
organisms into a food web.
– human– bald eagle– phytoplankton– mayfly– trout– dragonfly– frog– snake– salamander
What’s the first step?
What else do you need to know?
Sample Food Web• Using the following organisms, try to organize the
organisms into a food web.
– Human – loves to eat fish– Bald eagle – enjoys a good salamander, as well as fish– Phytoplankton– Mayfly – loves little sea critters– Trout – loves sea critters, mayflies, and dragonflies– Dragonfly – shares an interest with the mayfly– Frog – likes mayflies and dragonflies– Snake – loves Kermit and salamanders– Salamander – Kermit shares the same diet
Does yours look like this?
Directions• Check that you have 17 biota cards and a blank
sheet of paper.
• Make sure there are no repeats within your cards.
• Separate the cards into consumers, producers, and decomposers.
• USE A PENCIL FOR THIS ACTIVITY!
GREAT BULRUSHScirpus validus
DESCRIPTION
The great bulrush is a tall, marshland reed. It grows up to 2.5 meters in height. It is characterized by a round, green stem, a singleleaf, and loose clusters of green flower spikes. The bulrush grows in thick stands in one or more meters of water.
HABITAT
The great bulrush is found in the mud of shallow, fresh or brackish marshes.
BIOTA CARD
MAJOR FOODS:
Directions
• Create a food web using the 17 biota cards, starting with the sun at the top center of the paper.
• Place the producers underneath the sun.• From here, you need to create a food web for
the marsh.• Draw the arrows showing how the energy
flows (from organism being eaten to the organism that eats it).
GOOD!!
Energy
BAD BAD BAD!
Energy
Part A
• Creating a Food Web-– Fill in the chart after you have finished mapping
out the 17 biota cards.– Before you proceed to the questions, you need to
have Mr. Gendreau or Mr. Winther check your food web chart! DO NOT CONTINUTE until this is done.
Organism Arrows In Arrows Out
Mosquitoes 3 7
Things that the organism eats Things that eat the organism
Complete the chart for all 17 organisms on the Biota Cards
Part B
• Local Extinction-– What does the insecticide do to the populations of
mosquitoes and leaf beetles?– To illustrate the effect, use a GREEN colored pencil
and trace around the mosquito and the lines coming out of the mosquitoes.
– What does the green represent?
– REPEAT for the leaf beetle.
Example
• Did the eradication of those two populations affect consumers?– Circle them with an ORANGE colored pencil and
draw over the lines coming out of the organism.
Example
Finishing up…
• Answer all the questions on the lab worksheet, in complete sentences.
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