BIOLOGY 287 Lecture Notes - Lecture 17: Dinoflagellate, Chemosynthesis, Downwelling
11 Dec 2014
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Heterotrophs: all animals are heterotrophs; animals are dependent on the primary producers either directly or indirectly, herbivores (grazers) feed directly on autotrophs, carnivores (predators) feed on live herbivores or other carnivores, and scavengers feed on carrion, animals acquire energy through respiration, c6h12o6 + 6o2 (cid:224) 6co2 + 6h 20 + organic by products, (glucose/simple sugar + oxygen (cid:224) carbon dioxide + water + organic by products) : the production of organic matter by all autotrophs: stored chemical energy = carbohydrates, proteins, fats, primary production is measured in gc/m2/day, grams of carbon per square meter per day, much of the primary production in the ocean is by photosynthesis by microscopic, unicellular phytoplankton and photosynthetic bacteria = cyanobacteria, lesser amounts by, chemosynthetic bacteria (ex. at hydrothermal vents and cold seeps, multicellular algae (seaweeds in coastal waters, vascular plants in coastal waters (grasses, mangrove trees)
