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Name: ________________________________________________________ Date: _________ Period: ______Productivity: Measuring PhotosynthesisA biome is a group of ecosystems that share similar abiotic and biotic conditions. Biomes are primarily defined by their climate and typical plant and animal life. Climate describes the average conditions, including temperature and precipitation, over long periods in a given area. Climate is different from weather, the day-to-day conditions in Earth’s atmosphere like “sunny and humid” or “cold and snowy”. Ecologists compare biomes not only based on their climates and typical organisms, but also on how productive they are. Productivity is how much new organic matter an ecosystem generates. Plants and other primary producers convert solar or chemical energy into energy stored in the bonds of organic sugars. What are the inputs of photosynthesis? _______________________________________________________What are the outputs of photosynthesis? ______________________________________________________Based on the inputs and outputs for photosynthesis, how could you measure that photosynthesis is happening? List two specific ideas:________________________________________________________________________________________________________________________________________________________________________4262438257175The rate at which primary producers carry out photosynthesis is called gross primary production (GPP). Primary producers use some of this energy to carry out their own life functions through cellular respiration. Net primary production (NPP) is the organic matter, or biomass, that remains after cellular respiration. The biomass is the total living mass of an organism. Ecosystems vary in their NPP which is the rate at which primary producers turn energy into biomass. NPP is described in the diagram on the right:Who are the primary producers in an ecosystem? _______________________________________________What is the original energy source for ecosystems? _____________________________________________In the diagram above, what does Arrow A represent? ____________________________________________In the diagram above, how much energy is used for cellular respiration or lost as heat? _________________Write an equation for NPP._______________________________________________________________________________________Look at the Biome Characteristics Chart and the maps of United States temperature and precipitation data provided by your teacher. Predict what areas of the United States would have the highest and lowest NPP values. In which biome do you think these areas are located? Discuss your ideas with a partner and then write your conclusions below.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ................
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