Term
|
Definition
| rooted vegitation area of a lake |
|
|
Term
|
Definition
| open water zone, no rooted vegetation |
|
|
Term
|
Definition
|
|
Term
|
Definition
| enough light for photosynthesis |
|
|
Term
|
Definition
| no light, no photosynthesis |
|
|
Term
|
Definition
| foods broken down, at deepest part |
|
|
Term
|
Definition
| respiration and photosynthesis are equal, at photic and aphotic point |
|
|
Term
| name the three types of littoral vegetation |
|
Definition
| emergent, floting-leaved, submergent |
|
|
Term
|
Definition
| living in wetted areas burried in sediment |
|
|
Term
|
Definition
| Bottom dwelling organisms |
|
|
Term
|
Definition
| Film of microbs attached to surfaces of substrates "border community" (like rocks) |
|
|
Term
|
Definition
| plants attached to submergent surfaces |
|
|
Term
Communities living specific:
Epipelic |
|
Definition
|
|
Term
Communities living specific:
epilithic |
|
Definition
|
|
Term
Communities living specific:
epiphytic |
|
Definition
|
|
Term
Communities living specific:
epizootic |
|
Definition
|
|
Term
Organism Community:
Neuston |
|
Definition
| associated with surface tension (mossi) |
|
|
Term
Organism Community:
Nekton |
|
Definition
|
|
Term
Organism Community:
Plankton |
|
Definition
|
|
Term
|
Definition
|
|
Term
| 3 major components of lake sediment |
|
Definition
-particulate mineral
-organic matter
-inorganic remains of biota |
|
|
Term
|
Definition
| Human caused eutrophication |
|
|
Term
Types of sediment:
Gyttja |
|
Definition
| common sedient of eutrophy, mud rich in organic matter |
|
|
Term
|
Definition
| Common sediment of dystrophy (bog at bottom, organic content, acid soils) |
|
|
Term
Types of sediment:
Sapropel |
|
Definition
| develops under highly anerobic conditions (high organic content, no oxygen) |
|
|
Term
|
Definition
| layers of sediment in water, seasonal, can be used to tell lake history |
|
|
Term
|
Definition
| study of pollen in lake history, shows what plants and watershed existed |
|
|
Term
Dissolved oxygen is most important and useful meaure of lake because:
|
|
Definition
-mirrors stratification
-required by heterotrophs
-reflects metabolic conditions within lake strata |
|
|
Term
| the volume of oxygen dissolved in a volume of water depends on: |
|
Definition
-temperature (heat less cooler more)
- partial pressure of 02 (more elevation more oxygen)
-concentration of dissolved salts (more salt less oxygen) |
|
|
Term
|
Definition
| how much oxygen can hold at a certain temp and pressure |
|
|
Term
|
Definition
aquatic plants
algea
diffusion
inflow |
|
|
Term
diel (24 hr period) oxygen cycle:
diurnal |
|
Definition
|
|
Term
diel (24 hr) oxygen cycle:
nocturnal |
|
Definition
|
|
Term
diel (24hr) oxygen cycle:
crepuscular |
|
Definition
|
|
Term
Lake stratification parts:
|
|
Definition
epilimnion
metalimnion
hypolimnion |
|
|
Term
|
Definition
| zone of most rapid tem change (sometimes in metalimnion which is why it has the steepest slope) |
|
|
Term
|
Definition
| light being absorbed by water, rapidly in upper water and exponetialy as passes threw water columns |
|
|
Term
|
Definition
| lake with cold water fish warms up in summer, fish migrate to hypolimnion, hypolimnion begins to run out of oxygen, fish die |
|
|
Term
|
Definition
| ice forms on top, over eutrophication begins when nutrients begin to rot, oxygen begins to run out and fish die |
|
|
Term
|
Definition
| warmest at bottom, due to ice forming at top. water right under ice is saltier and begins to fall to the bottom |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| mixes once a year (in warm climate) or after ice has melted |
|
|
Term
|
Definition
| stratified all year (usually too warm)(unless huricane or stormy period) |
|
|
Term
|
Definition
| mix several times a year (usually high elevation lakes with strong winds) |
|
|
Term
|
Definition
| lakes dont mix throughout entire lake, too deep |
|
|
Term
|
Definition
| how much heat a lake takes on from winter minimum to summer maximum |
|
|
Term
|
Definition
| causes lake to rock back and forth from wind, causeing and unusual mix |
|
|
Term
|
Definition
| area of mixing, causes rate of diffusion to be faster |
|
|
