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Cothurnia limnoriae - NSCEP | US EPA - US Environmental ...

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Salinity<br />

Table 7: Definitions for the salinity classes.<br />

Salinity Classes:<br />

Level 1<br />

Venice System:<br />

Level 2<br />

Division of Venice Classes:<br />

Level 3<br />

Definition<br />

Fresh water < 0.5 psu<br />

Brackish 0.5 - < 30 psu<br />

Oligohaline 0.5 - < 5 psu<br />

Beta-oligohaline 0.5 - < 3 psu<br />

Alpha-oligohaline 3 - < 5 psu<br />

Mesohaline 5 - < 18 psu<br />

Beta-mesohaline 5 - < 10 psu<br />

Alpha-mesohaline 10 - < 18 psu<br />

Polyhaline 18 - < 30 psu<br />

Beta-polyhaline 18 - < 25 psu<br />

Alpha-polyhaline 25 - < 30 psu<br />

Marine/Euhaline 30 - < 40 psu<br />

Beta-euhaline 30 - < 36 psu<br />

Alpha-euhaline 36 - < 40 psu<br />

Hypersaline ≥ 40 psu<br />

65

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