The answer is following-
Angiosperms (decotyledon) and (Cycads).
The herbivore population would starve and decrease as well.
The proportion of mottled fish will
increase over time because of the construction company that dumps a load of
gravel in the bottom of the lake which give it a mottled appearance that made
the mottled fish invisible by their major predator which is the wading bird that hunts them
by sight.