Yellowstone Food Web

To conclude our work this week, we will assemble a food web of as many species as we can based on the research students did over the past few days into abiotic factors, biotic factors, and populations data.  Important vocabulary we will use to build our food web includes node, edge, and energy flow. Class notes are pictured below:


For your assignment today, construct a food web using the biotic factors in your Google Doc.  On the sticky note provided, write down population data for 2-3 species in Yellowstone and turn in to Mr. Swart.  We will use the class population data along with the food webs from today to dig further into the concepts of trophic cascades and carrying capacity next week.

Combined student-researched data to be used for constructing food webs:

Species Population Mass (kg)/organism Population mass (kg)
Peregrine Falcon 9 1 9
Bald Eagles 14 5 70
Wolverine 7 20 140
Canada Lynx 112 10 1120
Cougars 25 80 2000
Grey Wolves 104 34 3536
Beaver 500 23 11500
Mountain Goat 208 100 20800
Pronghorn Sheep 466 55 25630
Bighorn Sheep 328 100 32800
Black Bears 650 110 71500
Mule Deer 1850 45 83250
Grizzly Bears 610 300 183000
Moose 400 800 320000
Bison 4000 630 2520000
Elk 20000 275 5500000

Our work today is to find the mass (Google the mass of each species – look for grams (g) or kilograms (kg)).  Copy and paste the table into Google Sheets.  Fill in the mass of each organism (convert to kg) and then calculate the mass of each population using the formula in the population mass column.


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