Redox Reactions
This redox reaction is the most energetically favorable (e.g., produces the most energy).
What is aerobic respiration?
he developed the spiral concept in 1975
who is Webster?
the type of relationship required for biological N fixation
what is a symbiotic relationship?
the process by which plants and algae acquire P
what is assimilatory uptake?
when production is greater than respiration, a system is considered this.
what is autotrophic?
measurement of the direction/amount of electron transfer
the compartments between which nutrients "spiral"
what are the abiotic and biotic compartments?
the process carried out by Nitrosomonas and Nitrobacter bacteria
what is nitrification?
the major sources of P to the biosphere
what are weathering and mining?
the P:R ratio of a heterotrophic system
what is <1?
the electron acceptor in denitrification
what is nitrate?
this metric can be used to compare streams with different velocities
what is uptake velocity?
the preferred DIN source
what is ammonium?
the pH with the most freely available phosphate
what is a neutral pH?
this cycle in oxygen concentrations allows you to measure metabolism
what is a diel cycle?
a common process in marine systems occurring with ample Mn and organic matter
what is manganese reduction?
nutrient uptake decreases following floods as a result of this happening to the algae in streams
what is scouring?
where most N is stored in open-channel streams
what is the biota?
the oxygen conditions where phosphorus will release from the sediments
what are anerobic conditions?
inputs derived from outside of the system
what are allochthonous inputs?
the least energetically efficient process that requires abundant organic matter
what is methanogenesis?
this metric tells you how far a nutrient molecule travels before being removed from the water column
what is uptake length?
an anaerobic process that was discovered in waster water treatment plants
what is anaerobic ammonium oxidation?
this cation preferentially binds P at high pH?
what is calcium?
the conceptual model describing how changing physical characteristics influences the biology moving from small headwater streams to large rivers
what is the river continuum concept?