Inorganic nutrients
16; Limiting factor: P, N ….
Source:
Rain, river run off, sediment, sea water.
Organic nutrients
Source:
Phytoplankton, diatom, bacteria, algae on tress and roots,
dead organic matter, river runoff soil nutrients from coastal and upland erosion,
dead plants and animals.
Nutrient fluxes in the mangrove forest
Amount of nutrient which exports from mangrove forest is
important parameter of the ecosystem productivity. It is important to identify
the various sources of nutrient inputs and outputs from mangrove ecosystem.
Sources:
Static: Fixed nutrient; N P …
Dynamic: Comes from the tidal inundation and upland erosion (Na,
K Fe..)
Input of inorganic matter in mangrove ecosystem
1.
Rainfall.
2.
Fresh water runoff from surrounding land forest including
both dissolved and particulate boundary nutrient.
3.
N2 fixation.
4.
Mineralization: Heterotrophic conservation of
organic nutrient to inorganic nutrient.
5.
Tidal borne dissolved or particulate bound
nutrient.
6.
Chemical release from fixed state in soil.
7.
Man made influence (agriculture, drainage,
sewage, clearing mangrove areas etc.)
Output of inorganic matter in mangrove ecosystem:
1.
Tidal transport of dissolved and particulate
bound nutrient and plant litter.
2.
De-nitrification and volatilization.
3.
Immobilization of organic nitrogen in soil.
4.
Leaching of soils by fresh water.
