Pond and Stream Terms

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klokot
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36353
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Pond and Stream Terms
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2010-09-21 18:58:32
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Pond and Stream Terms
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  1. WHAT IS A WETLAND?
    usually a low lying area of soft waterlogged ground and standing water
  2. WHAT IS A MARSH?
    a wetland dominated by herbacious plants
  3. WHAT IS A SWAMP?
    a low land region saturated with water
  4. HOW DO YOU DETERMINE IF ITS A SWAMP OR NOT?
    by the type of vegatation that is found there
  5. WHAT IS A PERENNIAL STREAM?
    it means it flows all year round
  6. WHAT IS AN INTERMITTENT STREAM?
    it means it flows during part of the year
  7. WHAT IS A EPHEMERAL STREAM?
    it means it flows even less than a intermittent stream, usually after a snow melt etc.
  8. WHAT IS A MACROPHYTE?
    a macroscopic plant (visible to the naked eye)
  9. WHAT DOES EMERGENT MEAN?
    it means it grows above and out of the water
  10. WHAT DOES SUBMERGENT MEAN?
    it means below the surface of the water
  11. WHAT DOES THE TERM FLOATING LEAF MEAN?
    it means on top of wetland
  12. WHAT IS LENTIC?
    still water environment
  13. WHAT IS LOTIC?
    moving water environment
  14. WHAT DOES "DO" STAND FOR AND MEAN?
    dissolved oxygen, and its the amount of oxygen dissolved in a body of water
  15. WHAT DOES THE WORD AEROBIC MEAN?
    it has oxygen
  16. WHAT DOES THE WORD ANAEROBIC MEAN?
    deprived oxygen also tends to smell bad
  17. WHAT DOES THE TERM "BOD" STAND FOR AND MEAN?
    biochemical oxygen demand/ demand organisms put on environment by breaking down organic matter
  18. WHAT IS SUBSTRATE?
    its the rocky cobbely bottom of the stream floor
  19. WHAT IS DETRITUS?
    organic debris formed from the decay of organisms
  20. WHAT IS SURFACE TENSION?
    a property of liquids caused by unbalanced molecular cohesive forces at surface, behaves like a thin elastic film
  21. WHAT IS A HEXAPOD?
    a 6 legged arthropod which can tolerate low levels of DO
  22. WHAT IS A DECAPOD?
    • any crustacean mostly in marine order having 10 legs
    • Ex- crabs, lobsters etc.
  23. WHAT IS A ISOPOD?
    • any crustacean characterized by a flattened body bearing 7 pairs of legs
    • Ex- sow bugs
  24. WHAT DOES BENTHIC MEAN?
    its unconsolidated organic material
  25. WHAT IS PHYTOPLANKTON?
    • free floating aquatic plants
    • Ex- algae
  26. WHAT IS ZOOPLANKTON?
    • plankton that consists of animals
    • Ex- coral, rotifers, jellyfish etc.

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