Biodiversity & Conservation

MarLIN Glossary

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Sill
Lowest point on a submarine ridge or saddle at a relatively shallow depth, separating a basin from an adjacent sea or another basin (from Baretta-Bekker, Duursma & Kuipers, 1992). In sea lochs, sills are structures commonly formed by glaciation, found at the mouth or elsewhere along the length of the loch. Such a threshold can limit water exchange.

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Glossary references