The producers of this food web are plants; they can produce their own food. The first-order consumers are nematodes, fungi and bacteria. The high-order consumers are birds, animals and arthropods. The decomposers are bacteria and fungi. After an organism dies, they rot and gets, well, decomposed by the decomposers (i.e. fungi & bacteria). The 2 spieces which compete each other for food are birds and animals (maybe). The 2 spieces which doesn't have a preadator are birds and animals.
That was Part A, so I wasn't finished yet. This is Part B:
If the foxes disappeared, then the rabbits will over-populate and the grass might be extinct. If the predaceous insects disappeared, then the toads will all die out or have to eat something else. If the spiders disappeared, then the predaceous insects' population will stay the same because the spider isn't the only preadator of the predaceous insect. If the foxes & snakes disappeared, then nothing will happen to the hawks & owls because nothing's connected to them & the foxes (maybe). The population of the foxes will decrease if the population of the hawks & owls increases because the hawks & owls eat the same types of food as the foxes. The 2 speices which compete with each other for food are foxes & hawks. 2 of the first-order consumers are rabbits and seed eating birds. 2 of the preadators are spiders and toads.
5 comments:
Dear Riolu,
Your answers to the Task A foodweb are right on. Please continue to answer the questions and then embed and complete Task B. If you finish those two tasks you can read my comments about your decompostion chamber blog entry.
Keep up the good work!
Mrs. Bonzarelli
Thank you mrs. bonzarelli for commenting... Please keep on posting comments in my blog people (or animals, maybe...)! Thanks...
PS I mean it!
Riolu (>.')
DEAR RIOLU,
YOU CONTINUE TO DO WELL WITH YOUR ANSWERS. I HOPE YOU CAN FINISH TASK B TODAY AND MOVE ONTO THE NEW TASK. GOOD WORK.
MRS. BONZARELLI
Ok I get it! Finish task B & read D.C. comment. Fine. I will.
Riolu (>-<)
PS keep visiting my blog people...
Dear Riolu,
Your answers to Task B are thoughtful. I would just like to add that if the the foxes and snakes decrease or disappear that in the short run nothing would happen with the hawks and owls. They would have plenty of food. Some students have said that there populations would increase because there would be more food. That is possible. I'm wondering if the hawks and owls would be able to control the 1st order consumer population though. What might happen if they can't? Could there be an indirect and long range effect that will be detrimental to the hawks and owls? Isn't it fascinating how interdependent organisms in a food web are?
Mrs. Bonzarelli
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