Benthic macroinvertebrates definition

Benthic macroinvertebrates means animals which are large enough to be seen by the unaided eye and which can be retained by a U.S. standard No. 30 sieve (28 meshes per inch, 0.595 mm openings), and which live at least part of their life cycle within or upon submerged substrates in a body of water. These animals usually consist of the aquatic life stages of various insects and arthropods, mollusks, leeches and worms.
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Benthic macroinvertebrates means bottom dwelling animals without backbones that live at least part of their life cycles within or upon available substrates within a body of water.
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Benthic macroinvertebrates means invertebrate animals that are large enough to be seen by the unaided eye, can be retained by a U. S. Standard No. 30 sieve, and live at least part of their life cycles within or upon available substrate in a body of water or water transport system.
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Examples of Benthic macroinvertebrates in a sentence

  • Benthic macro-invertebrates (BMIs) and physical habitat quality will be used as biological indicators of water quality and overall stream health.

  • Benthic macroinvertebrates samples were collected in autumn of 1998 and spring, summer, and autumn of 1999- 2002 to evaluate pre-BMP community structure (1998-2000) as well as changes in the community during the implementation phase (2001-2002).

  • Benthic macroinvertebrates - Animals without backbones, which are visible to the eye and which live on, under, and around rocks and sediment on the bottoms of lakes, rivers, and streams.

  • The four pilot projects are: • Development of Standard Operating Procedures (SOPs) and Quality Assurance Project Plans (QAPPs) for Stormwater • Stream Benthos Gap Analysis, Coordination, and Data Management • Inter-calibration Pilot Study • In-Line Ditch Stormwater Treatment Best Management Practice Program Benthic macroinvertebrates are valuable indicators of water quality and watershed health because they have limited mobility and spend most or all of their lives in the stream bed.


More Definitions of Benthic macroinvertebrates

Benthic macroinvertebrates means invertebrate animals that are large enough to be seen by the unaided eye, can be retained by a U. S. Standard No. 30 sieve, and live at least part
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