Organisms that introduce energy into the food web

A specialist who studies inland waters

The aquatic food web is a diagram of the complex movement of what through an aquatic environment

A type of graph showing how something changes over space or time

An invasive, parasitic fish native to the Atlantic Ocean that has infiltrated the great lakes

Single celled aquatic organisms that make energy by photosynthesis

A white, or sometimes parti-colored disk used to determine the transparency of water

The source of energy for tertiary consumers

A type of graph used to compare and contrast numbers, frequencies or other measures of distinct categories of data

A freshwater char living in lakes in northern North America including Lake Superior, also known as siscowet

Most common photosynthetic chemical in algae and aquatic plants

A layer of rock, gravel and/or sand that contains water that can feed a well or spring

Primary consumers such as copepods are one of the types of organisms known generally as

Light, depth, chlorophyll concentration, temperature are examples of

The largest, and one of the longest lived, fish in Lake Superior

Group of organisms that are plant-like and wander or drift through the water

A map illustrating the bottom topography and depth of a lake or pond

Small aquatic animals, and the aquatic larval stages of insects, including dragonfly and stonefly larvae, snails, worms, and beetles

In graphing limnological data, the y-axis typically represents this variable

Cisco and inland tullibee are all names for this cold water fish

A waste product generated by primary producers during photosynthesis

A state in which a lake or pond is nutrient rich and sustains high levels of biological productivity

The cyclic, synchronized daily movement of zooplankton and fish up and down in the water column to feed and evade predators

In graphing limnological data, this axis is positioned at the top of the page

This macroinvertebrate is the primary food source for the majority of open-water Lake Superior fishes