lacustrine

lakustrinen, järvi- Of or relating to lakes.
(quote-book)
1982, R. H. Lowe-McConnell, Tilapias in Fish Communities, Roger S. V. Pullin, R. H. Lowe-McConnell (editors), The Biology and Culture of Tilapias: Proceedings of the International Conference on the Biology and Culture of Tilapias, 2-5 September 1980, https://books.google.com.au/books?id=-rtoFIsImzoC&pg=PA112&dq=%22more%7Cmost+lacustrine%22&hl=en&sa=X&redir_esc=yv=onepage&q=%22more%7Cmost%20lacustrine%22&f=false page 112,

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

This apparently reflects a general change from a more lacustrine environment in the lower member to a more fluviatile setting in the upper.

It covers all of the DVGDDixie Valley Geothermal District and is more lacustrine in nature than the other valley-fill layers.