Titlebook: Lake Chad; Ecology and Producti J.-P. Carmouze,J.-R. Durand,C. Lévêque Book 1983 Dr W. Junk Publishers, The Hague 1983 Fauna.benthic.ecolog

ingenue

確定方向

鬼魂

Historical background by the name of Leo Africanus, first spoke of a great lake situated in a desert region and fed by underground water coming from an arm of the Nile. He suggested that the River Niger originated from this lake.

新奇

Paleolimnology of an upper quaternary endorheic lake in Chad basin73), but was completed by diatom (Servant-Vildary 1978) and pollen analysis (Maley 1980) from lacustrine deposits. The main purpose was to reconstruct the paleoenvironments of the quaternary lakes in order to determine climatic variations. The results are incorporated into a more comprehensive progr

責(zé)怪

The lacustrine environment basin which has an outlet towards the Chad Bahr-el-Ghazal above the altitude of 283 m (Fig. I). Lake waters rise above this point only after several consecutive high river floods and then flow towards the lower regions in the northern part of the basin. Around this level, the lake looks like a smal

處理

Physical and chemical characteristics of the watersed both spatially and temporally. It is thus very difficult to describe the environment. We have subdivided the lake into a certain number of regions and considered parameters such as water turbulence, temperature, oxygenation and transparency as well as the chemical characteristics of the water. Th

畢業(yè)典禮

Organonitrile

The aquatic vegetation of Lake Chad The species composition and the location of the populations were determined and some observations on the aquatic vegetation of the then reduced lake area were made by Chouret and Lemoalle (1974), Fotius (1974), Fotius and Lemoalle (1976). These observations follow the changes in the lake basin whic

beta-carotene

結(jié)構(gòu)