Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
|
Attenuation |
Exponential loss of light as it passes through yhe water |
|
|
Why ocean water blue? |
It absorbs mostly red and infrared wavelengths |
|
|
Why is some coastal and river water yellow green? |
High amounts of Chromophoric dissolved organic material, they absorb uv and blue wavelengths. |
|
|
Compensation irradiance |
Irradiance where Photosynthetic rate = respiration rate |
|
|
Saturation irradiance |
Irradiance where a further increase in irradiance does not increase rate of photosynthesis |
|
|
Photoinhibition |
Where there is a decrease in photosynthesis at high ireadiances |
|
|
Net photosynthesis |
gross photosynthesis - respiration |
|
|
Photoacclimation |
Where organisms acclimate to a given light regime mostly by altering the concentrations of chlorophyll and/or accessory pigments. |
|
|
Karysostraphy |
Process by which chloroplasts move in reaction to changes in light conditions. |
|
|
Compensation depth |
Depth in a water column where net photosynthesis is 0. |
|
|
Oligotrophic |
Low concentrations of essential nutrients |
|
|
Eutrophic |
High concentrations of nutrients, high primary production |
|
|
Mesotrophic |
Waters with medium nutrients, between eutrophic and oligotrophic |
|
|
Eutrophication |
A process by which productivity of an aquatic system can be increased increase in the rate of supply of organic material to a system |
|
|
What are the main growth limiting nutrients in marine systems? |
Nitrogen and phosphorous |
|
|
4 factors that govern primary production in marine systems |
Light Mixing Stability Nutrients |
|
|
Production |
Amount of biomass accumulation per given area or volume |
|
|
Productivity |
Rate of biomass produced per given area or volume |
|
|
Primary production |
Formation of organic matter through the trapping of light energy and assimilation of inorganic elements. |
|
|
Photosynthetically active Radiation |
400 - 700nm Spectrum of radiation used by photoautotrophic microalgae |
