SNRE 509
Terms
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- NH4
- Ammonium
- NO3
- Nitrate
- NO2
- Nitrite
- TIN
- Total Inorganic Nitrogen
- NH4OH
- unionized ammonia
- NH2OH
- hydroxlyamine
- TN
- Total Nitrogen
- fixation (nitrogen)
- N2 -> organic N aerobic blue green algae
- assimilation (nitrogen)
- NO3, NH4 -> organic N aerobic plants
- ammonification
- organic N -> NH4 aerobic and anaerobic bacteria
- nitrification
- NH4 -> NO2 -> NO3 aerobic bacteria
- denitrification
- NO3 -> NO2 -> N2 anaerobic bacteria
- Nitrification: Nitrasomonas spp. [broad temp tolerance, best around neutral pH]:
- NH4+ + 1 1/2 O2 ® 2 H+ + NO2- + H2O + energy (does anyone know what the "spp." means?)
- Nitrification: Nitrobacter spp. [ less tolerant of cold and higher pH]
- NO2- + 1/2 O2 ® NO3- + energy (does anyone know what the "spp." means?)
- TP
- total phosphorus
- total phosphorus (TP)
- [PO4] + [xxPO4] + [Org P]
- reduction
- gaining electron(s) gaining energy
- oxidation
- giving away electron(s) giving away energy
- ionic bond
- metal bonded with a non-metal (salt)
- covalent bond
- no metals involved in bond
- Light attenuation (Loss) scattering:
- refraction and reflection by suspended particles, leafs, clouds etc. In water related to suspended particulate concentration
- Light attenuation (Loss) absorption:
- radiant energy captured by molecules related to chemical composition of material it passes through.
- NTU
- turbidity units measured with nephelometer
- Catabolism
- metabolic process related to energy acquisition (organic)
- Anabolism
- process related to energy utilization and biochemical synthesis
- Metabolism
- Catabolism + Anabolism
- Photoautotrophs
- light energy + raw materials
- acidity
- ability to donate protons (H+) ability to accept hydroxides (OH-)
- alkalinity
- ability to accept protons (H+) ability to donate hydroxides (OH-)
- Chemoautotrophs
- “high energy†IngOrg + raw materials
- Photoheterotrophs
- light energy + Org materials
- Chemoheterotrophs
- high energy Organic compounds
- trophogenic zone
- zone in water where there is enough light for photosynthesis
- tropholytic zone
- zone in water where there is not enough light for photosynthesis, respiration is dominant
- chlorophylls
- absorb blue light (short wavelengths) and red light (long wavelengths) 430 and 650 nm
- carotenoids
- absorb green light (middle wavelengths) 450-500 nm
- biliproteins
- absorb orange light (long wavelengths) 500-650 nm
- phylogenetic chromatic adaptation
- evolution sets some limits on what pigment are available can influence what species dominate a particular area
- ontogenetic chromatic adaptation
- many plants can physiologically adapt to light regimes by altering production ratios of the pigments they have
- Monod’s model
- A simple 3 parameter model for rate-constrained growth. Commonly used to describe the relationship between availability of a limiting resource and the resulting rate of cell uptake, growth or photosynthesis.
- growth or uptake rate = (Monad's model)
- = Max * (S/ S+K)
- Liebig’s Law of the minimum
- yield or growth of an organisms is determined by the abundance of that substance which, in relationship to the needs of the organism, is least abundant in the environment [i.e.,at a minimum]
- hypoxia
- low oxygen
- anoxia
- no oxygen
- Biochemical Oxygen Demand (BOD)
- the amount of oxygen required by bacteria while consuming decomposable organic matter under aerobic conditions