Aquatic sill

An aquatic sill (or an oceanic sill) is a sea floor barrier of relatively shallow depth restricting water movement between oceanic basins.[1] A similar barrier can also exist on a lake floor.

Aquatic sills as barriers

An aquatic sill can be a biogeographic barrier for species located in deep basins on either side. On top of an aquatic sill, water is often warmer than deeper water.[1]

An aquatic sill can restrict movement of water masses in the bottom, and also results in their isolation, which can be partial, and is sometimes near total.[2]

Examples

See also

References
  1. "Sills". Sills. Blue Habitats. Retrieved 25 September 2017.
  2. "Ocean Basin".
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