Salinity
Mike McMahon

Salinity describes the amount of salt dissolved in a body of water. Fresh and salt water organisms have vastly different salinity tolerance. Even organisms such as O‘opu, which live in both fresh and salt water at different stages in their lives, can not tolerate abrubt changes in salinity. Like conductivity, salinity can be used to check for possible saline intrusions.

As Salinity increases:
Conductivity increases;
TDS increases
Water Quality decreases
Definitions

Salinity:

Concentration of dissolved salts found in a sample of water. Measured as the total amount of dissolved salts in parts per thousand. Seawater has an average salinity of about 34 parts per thousand.