lacustrine

adj

Etymology: From Latin lacustris, from lacus (“lake”).

1. Of or relating to lakes.

   “These deposits of sand have always been formed by the disintegration of a siliceous rock, and the fragments so formed have been sifted and transported by the agency of water, being finally deposited by a river either in the sea (marine deposits) or in lakes (lacustrine deposits), while the action of water, either during transport or after deposition, has frequently worn the individual particles into the shape of rounded grains.”

   “[…]has some of these features, such as brooding one brood a year (which suggests that this species may have evolved under more lacustrine conditions).”