Zusammenfassung der Ressource
Chemistry
- Macro Nutrients
- Silicon
- Sources
- weathering of rocks
- transported by rivers
- Hydrothermal Vents
- Distribution higher in coastal waters
- due to river runoff
- concentrations increase in spring
- higher in pacific because more time accumulate
- deep water has more because there is no photosynthesizers to use up nutrients
- Phosphate
Anlagen:
- Essential for:
- Photosyntheses
- creating cell walls (phospholipids)
- Energy Transfer
- Dissolved Inorganic
- Most behavioural form
- PO43-
- 80% of total Inorganic P
- 8.2pH
- Dissolved Organic
- poorly defined
- Occurs in surface waters due to:
- Plant decompostion
- Decomposition and excretion of Marine Animals
- Sources
- Natural Weathering of Apatites
Anmerkungen:
- Anthropogenic Sources
- Chemical and Biological fertilizers
- Excretion from farm animals
- transported to ocean via rivers
- sewage disposal on coasts
- Affected By:
- The rate of Primary Productivity
- Photosynthesis by Phytoplankton
- rate of respiration
- Nitrogen
Anmerkungen:
Anlagen:
- Sources
- Volcanic Activity (NH3)
- Atmospheric
Anmerkungen:
- NO2 from Nitrogen fixation
- Rivers
Anmerkungen:
- removed
- Fixation
- Plants
- Carried out by nodular bacteria from land plants
- insignificant in water column
- when plants die Nitrogen is released back into water column
- Phytoplankton
- Euphotic zone
- rapid removal in spring due to plankton growth
- Regeneration
- Oxidation of organic nitrogen
- excretion of phytoplankton by fish and zooplankton
- Surface waters have low levels
- Deep water is rich in Nitrates
- Pacific
- Higher Concentrations
- Water is older thus accumulated more NO3