This is the zone where sunlight is sufficient for photosynthesis to occur.
What is Photic (Euphotic) Zone
100
The bottom and most dense layer of a thermally stratified lake.
What is Hypolimnion
100
Another name for aquatic plants
What is Macrophytes
100
Deep, cold lakes with very little nutrients or plant growth. Lake Michigan is an example.
What is Oligotrophic
100
Seasons of the year when turnover takes place.
What is Fall and Spring.
200
Nearshore out to the maximum depth of the euphotic zone reaches.
What is Littoral zone.
200
The zone where the temperature gradient is the steepest. This is were the temperature change is the most drastic being more than 1 deg. change per meter of depth
What is Metalimnion.
200
Refers to bottom dwelling organisms like crayfish, clams and aquatic worms.
What is benthos (Benthic organisms)
200
These lakes have very high amounts of nutrients and are dominated by rough fish
What is Eutrophic
200
Temperature when water is at it's most dense.
What is 4 deg. celcius (~39 deg.Fahrenheit)
300
Very bottom zone of a lake where light does not penetrate and only organisms like crayfish and clams live.
What is Benthic zone.
300
Another name for Metalimnion.
What is Thermocline.
300
Refers to larger mobile organisms like fish
What is Nekton
300
These lakes have more nutrients than oligotrophic, but less than eutrophic. Common type of lake found in Northern Wisconsin.
What is Mesotrophic
300
What would happen if ice were more dense than water.
What is Lakes would freeze from the bottom up and freeze completely solid. All life in the lake would die.
400
Open water zone
What is Limnetic zone
400
Upper wind mixed layer of a lake that is also the warmest layer in summer.
What is Epilimnion.
400
Small microscopic organisms that may be plant-like or animal-like
What is plankton
400
Lakes that have both an outlet and an inlet whose source of water is groundwater or runoff.
What is Drainage lake
400
Where would the warmest water be in the winter time.
What is At the very bottom.
500
This is the zone where you would find aquatic macrophytes (plants) growing.
What is Littoral zone
500
Only season in which thermal layers exist.
What is summer.
500
Algae that is attached to submergent plants.
What is periphyton
500
Lake type with no outlet or inlet whose principal source of water is groundwater
What is Seepage.
500
Why is turnover important to lakes
What is it helps oxygenate the lake prior to freeze up.