 masses of acquatic plants.
ANIMAL ADAPTATIONS Diving insects such as water boatman and Diving beetlesADAPTATION: Carry a bubble of air with them when they go under water in search of prey.
HUMAN IMPACT The shore line is parceled into lots, residences spring up, nutrient seep in the septic tanks and pesticides find their way into the lake. Before long the structure of the lake changes.
Motorboats discharge an oily mixture that can lower oxygen levels and adversely affect the growth and longetivity of fish. Wake created by motor boating disturbs littoral vegetation.
HUMAN IMPACT Overfishing, pollution and introduction of exotic species accidentally or on purpose Human activities like road construction, logging, mining, agriculture add another heavy loads of silts and nutrients, especially nitrogen, phosphorus and organic matter.