General Ecology_Mahaffy_Date__030910

General Ecology_Mahaffy_Date__030910 - In aquatic systems...

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Energy continued Productivity Primary productivity Definition: rate that producers can capture light energy and store hydrogen in chemical bonds Gross Everything Net That which is available to consumers Measured during day Carbon dioxide uptake in combination with photosynthesis and respiration Photosynthetic efficiency GPP = energy fixed by GPP/ energy in incident sunlight Transpiration efficiency Water use efficiency Net primary productivity varies among ecosystems Limits to productivity
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Unformatted text preview: In aquatic systems Light Nutrients • Especially potassium, nitrogen, and iron In terrestrial systems Sunlight Temperature Water • Use efficiency Nutrients Animals need nutrients too Small intestine Where nutrient absorption takes place Herbivory vs. carnivory vs. omnivory Gut specializations Hindgut/ forgut fermentation Coprophagy Mineral needs Especially in the spring time for herbivores...
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