F4 BIOMASS (2)
Biomass in four main natural regions [kg (dry wt.) ha-1]
South Basin Open water Archipelago North Basin Open water Archipelago
Phytoplankt 0.09 4.13 3.84 7.28
Macrophytes 11,000
Zooplankton
- Copepoda 2.5 6.9 8.9
Benthos
- Mollusca 25.8 10.6 64.2 33.6
- Worms 2.0 0.8 8.0 1.8
- Insects 0.1 0.6 2.1 1.8
Source: Carmouze, J.-P., Durand, J.-R., & Leveque C. (1983) The lacustrine ecosystem during the "Normal Chad" period and the drying phase. "Lake Chad" (ed. Carmouze, J.-P., Durand, J.-R. & Leveque, C.), pp. 527-560.