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The feeding ecology of the aoudad (Ammotragus lervia) was investigated for the first time in north-western Sahara, Djebel Antar (Bechar province, Algeria), from autumn 2015 to summer 2016. Microhistological analyses of faeces revealed an annual diet composed of 23 identified taxa belonging to 16 plant families. The highest species diversity was recorded in spring and summer (23 species), despite a marked consumption of two species: Vachellia tortilis (17.7%) and Avena sterilis (14.0%); diet diversity was lower in autumn and winter (16 species), including mainly Teucrium polium (14.7%, 21.0%) and Gymnocarpos decander (19.7%, 10.0%). The main plant parts consumed during these seasons were stems (77.7%, 65.3%), while leaves and inflorescences were mostly consumed during spring and summer (54.7%, 52.3%). Forbs dominated the aoudad's diet, with 46.3% average relative abundance, including mainly T. polium, Limoniastrum feei, and Chrysanthemum macrocarpum. Woody plants including mainly V. tortilis and G. decander accounted for 33.3% (50.0% in autumn), and grasses including A. sterilis and H. murinum for 20.4% (32.0% in summer). Based on this diet, A. lervia can be classified as a "generalist mixed-feeder."

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Cuvier's gazelle (Gazella cuvieri) and aoudad (Ammotragus lervia) are listed as Vulnerable in the IUCN red list, and any population should be the subject of scientific attention. Both ungulates were monitored for a year in the Nador Mountains (western Algeria). This is the first record of aoudad in this part of Tiaret province. Both species are partly sympatric. However, the aoudad was sighted only in small numbers in the roughest valleys in the north. The gazelle population is larger, but with few juveniles. The future of these wild ungulates is therefore worrying, and new conservation measures are required, including protecting this area.

Jusqu’à présent, les recherches entreprises en Algérie pour contrôler Planococcus ficus Signor et ou cochenille farineuse, ravageur responsable de nombreux dégâts sur vignes, ont été très limitées. Une étude sur la dynamique spatio-temporelle du parasite a été entreprise pendant trois années, dans les vignobles de la Mitidja occidentale en Algérie. Des échantillonnages hebdomadaires de feuilles et de grappes ont été effectués de 2006 à 2008 sur cépages de cuves et de tables. Une forte contamination par P. ficus a été observée en été et en début de l’automne selon les cépages et les années. Le système de Monitoring a montré la succession de 5 à 6 pics sur feuilles et 3 à 4 pics sur grappes de raisins.