Algerian Sahara

Rocks, stumps, trees, scraped soil, scarred plant stems, or otherwise disturbed vegetation attract the attention of animals who then examine the spot more closely for olfactory information left by conspecifics. The urine balls made by sandrats of the Algerian Sahara provide an elaborate example (Daly and Daly, 1975). Sandrats dig up sand, urinate on it and work it into a ball that other sandrats examine. Urine balls from estrous females strongly attract males. 

Daly, M. and Daly, S. (1975). Behavior of Psammomys obesus (Rodentia Gerbillinae) in the Algerian Sahara. Zeitschriftfur Tierpsychologie 37,298-321. 

Geochimica et Cosmochimica Acta, Vol. 8, pp. 22-48, 137-170, 198-212 Chiarelli, A., 1978. Hydrodynamic framework of Eastern Algerian Sahara. Influence on hydrocarbon occurrence. The American Association of Petroleum Geologists Bulletin, Vol. 62, no. 4, pp. 667-685... 

Two years later, the Hassi-Messaoud oil field and Hassi R Mel gas field in the Algerian Sahara were discovered, and within three years Compagnie Francaise des Petroles began the commercial production and operation on oil wells in these fields. 

Demaisom GJ (1965) The Triassic salt in the Algerian Sahara, in salt basins around Africa. Inst. Petroleum., London, p 91-100... 

Holsinger, D. C. (1980). Trade routes of the Algerian Sahara in the nineteenth century. Revue de rOccident Musulman et de la MSditerranSe, 30(2), 57-70. 

Chader, S., Hacene, H., Agathos, S.N., 2009. Study of hydrogen production by three strains of Chlorella isolated from the soil in the Algerian Sahara. International Journal of Hydrogen... 

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