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Published byCalvin Strickland Modified over 9 years ago
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Draw a food chain for a pond consisting of 4 or 5 organisms. Label the different trophic levels. With the other people on your table, turn your food chains into a food web on the mini whiteboard.
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Complete the summary questions on p66. Do the ecological efficiency sheet.
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Gross Productivity – Energy “fixed” by the producers in photosynthesis and stored as chemical energy in glucose. Net Productivity – Energy accumulated in producer biomass and available to consumers after energy losses from plant’s own metabolic reactions (heat/respiration) have been taken into account. Primary Productivity - Amount of plant biomass (crop) produced. Secondary Productivity – Amount of consumer biomass (tissue) produced.
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