9 Critical Factors in Plankton Abundance

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Atmospheric nitrogen Denitrification Nitrogen fixation Primary production Dissolved inorganic nitrogen Respiration Advection, Mixing Organic nitrogen External nitrogen sources and sinks Nitrogen Cycle
Problem: On global and historical scale: is nitrogen limiting oceanic productivity, given exchanges between atmosphere and ocean. 1. Ocean has abundant cyanobacteria – nitrogen fixers 2. Denitrification occurs in anoxic locations (sediments, anoxic waters) and this returns N 2 to the atmosphere. 3. Balance is not so clear.
Page 1: 9 Critical Factors in Plankton Abun
Page 4 and 5: Light and Phytoplankton - concepts
Page 6 and 7: Cause of the spring phytoplankton i
Page 9 and 10: Cause of the spring phytoplankton i
Page 11 and 12: Rejuvenation of conditions for the
Page 13: What matters in the spring diatom b
Page 17 and 18: Water column exchange in shallow wa
Page 19 and 20: Water column exchange in shallow wa
Page 21: Water column exchange in shallow wa
Page 25 and 26: Other applications: phytoplankton b
Page 27 and 28: Photosynthetic rate + _ 0 P max Gro
Page 29 and 30: Photosynthesis in Water Column Phyt
Page 32 and 33: Nutrients Nutrients are substances
Page 34 and 35: Nutrients Nitrogen - New vs. Regene
Page 38 and 39: Nutrients Phosphorus - occurs disso
Page 40 and 41: Nutrients The limiting nutrient? In
Page 42: Nutrients Iron - important cofactor
Page 46 and 47: Nutrients Trace elements such as Mn
Page 48 and 49: Microbial Loop 1. Bacteria are abun
Page 50 and 51: Nutrient uptake Nutrient uptake by
Page 52 and 53: Nutrient uptake K is nutrient conce
Page 54 and 55: Nutrient uptake Application of mode
Page 56 and 57: Phytoplankton Succession Seasonal c
Page 58 and 59: Zooplankton Grazing Grazing effect:

9 Critical Factors in Plankton Abundance

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