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Definitions (51)
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epipsammic
Algae that grow on sand, which is hard, relatively inert, and has relatively little surface area. Few algae live in sand among sand grains, because the sand is too unstable and may crush them.
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epilithic
Algae that grow on hard, relatively inert substrata, such as gravel, pebble, cobble, and boulder, that are bigger than most algae.
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algae
A complex and diverse group of organisms that are, for the most part, aquatic organisms that obtain energy through photosynthesis and are smaller and less complex than land plants. Algae include cyano [..]
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epiphytic
Algae that grow on plants and larger algae, which provide relatively firm substrata that are bigger than the epiphytic algae, but can be highly active metabolically and a great source of nutrients.
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epipelic
Algae that grow on inorganic or organic sediments that are smaller than most unicellular algae. Epipelic algae are typically large motile diatoms, motile filamentous blue-green algae,or larger motile [..]
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phytoplankton
Microscopic algae that are suspended in the water column.
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aquatic benthic macroinvertebrates
Aquatic animals without backbones that can be seen by the unaided eye and typically dwell on the bottom substrate of a waterbody (e.g., rocks, logs, sediment, plants). Examples of aquatic macroinverte [..]
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aquatic life
Any plants or animals that live at least part of their life cycle in fresh water.
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aquatic life uses
The U.S. Clean Water Act requires that waters of the U.S., at a minimum, are managed to attain an Interim Goal condition that provides for protection and propagation of a balanced population of fish, [..]
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as naturally occurs
Conditions with essentially the same physical, chemical and biological characteristics as found in situations with similar habitats, free from measurable effects of human activity.
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