ICHTHYOLOGY and LAKE ECOLOGY

Let’s Talk Lakes!!!

Lake Zones

10 %

FOOD CHAIN

AQUATIC PLANTS

OLIGOTROPHIC, MESOTROPHIC, EUTROPHIC

TROUTNEED COLD, CLEAN WATER

BULLHEADSCAN TOLORATE WARM, MUDDY WATER

PHOSPHORUS

WINTER KILL!

TURBIDITY AND TEMP.

BOG STAINED WATERS

BIOLOGICAL MAGNIFICATION

MISSISSIPPI WATERSHED

HARD WATER VS. SOFT WATERMineral in bedrock (Leeching)

Boundary Waters Canoe AreaGlacial Erosion, Acid Precipitation?

Fish Survey

EXTERNAL ANATOMY

INTERNAL ANATOMY