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11 Cards in this Set
- Front
- Back
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Biomass
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-the mass of living material
present at any time, expressed as grams per unit area or volume |
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Productivity
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-the rate of production of
living material per unit time per unit area or volume |
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Primary productivity
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-productivity due to
photosynthesis |
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Secondary productivity
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-productivity by the
consumers of primary producers |
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Autotrophic
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-are capable of photosynthesis and growth using only dissolved inorganic nutrients
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Auxotrophic
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-require a few organically derived substances (e.g. vitamins, fatty acids) and dissolved inorganic nutrients for photosynthesis
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Heterotrophic
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-consume organic matter exclusively
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Saprophytic
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-decompose organic matter
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Food chain
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-linear sequence showing which organisms consume which other organisms, making a series of trophic levels
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Trophic level
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-a species or group of species that feed on one or more other species (which can be grouper into a lower trophic level)
-Primary Producers =>Phytoplankton and some macrophytes -Consumers: heterotrophic animals =>Primary consumers: herbivores =>Secondary and higher-level consumers: carnivores, predators -Decomposers: bacteria and fungi -Trophic Level 4: Top carnivore -Trophic Level 3: Carnivore -Trophic Level 2: Herbivore -Trophic Level 1: Autotroph |
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Food web
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-more complex diagram showing feeding relationships among organisms, not restricted to a linear hierarchy
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