Amar Madoui

Université du Québec à Montréal | UQAM

La forêt algérienne continue à être victime de l’insouciance des citoyens par leurs diverses actions destructrices et irréfléchies. Les incendies volontaires, le pâturage excessif et non contrôlé et essentiellement les délits de coupes sur des essences dont les superficies sont déjà réduites et en régression, sont à citer en premier. La forêt de Ba...

Abstract. – Orchids in the northern part of the Setif province (North-East of Algeria). As a follow-up to the previous study on the orchids of the wilaya of Setif and continuing to explore the different potential wider sites that could shelter these plants, this inventory brings other observations of orchids in an area that ranges from Setif to Khe...

The same as https://www.researchgate.net/publication/340878201_Inventaire_des_Orchidees_de_la_partie_septentrionale_de_la_wilaya_de_Setif_nord-est_de_l%27Algerie

This document is a summary of recent data about orchids from north-eastern Algeria. The areas concerned are the Kabylia in the broad sense and the historic Algerian Numidia with its adjacent mountains of Hodna and Aurès. They are very diverse territories in terms of geography (from the coast up to + 2000m altitude), bioclimate (from the semi-arid s...

La Néottie nid d’oiseau (Neottia nidus-avis) a été signalée en Algérie uniquement à Babor. Malgré qu’elle ait été citée par la suite par d’autres auteurs, aucune illustration n’a été donnée de cette très rare orchidée. Après plusieurs sorties au djebel Babor, on a eu la chance d’observer cette orchidée à deux reprises. Au total, 19 individus de Neo...

ABSTRACT : The Neottie bird's nest (Neottia nidus-avis) has been reported in Algeria only in Babor. Although it has been cited by other authors, no illustration has been given of this very rare orchid. After several trips to djebel Babor, we had the chance to observe this orchid twice. In total, 19 individuals of Neottia were found in the Babor for...

Abstract: Wildfire is the main disturbance affecting Mediterranean ecosystems, with implications on biogeochemical cycles, biosphere/atmosphere interactions, air quality, biodiversity, and socio-ecosystems sustainability. The fire/climate relationship is time-scale dependent and may additionally vary according to concurrent changes climatic, envir...

La wilaya de Sétif, réputée par sa richesse floristique et pour sa diversité écologique, héberge une biodiversité floristique remarquable. Cette biodiversité nécessite une bonne investigation sur terrain afin de localiser, d’identifier et de cartographier les espèces rares et menacées de cette région. Parmi ces espèces, les orchidées demeurent les...

Fire is considered as the most important factor responsible for the diminution of Algerian for-ested area. Every year, thousands of hectares of vegetation burn affecting different species. The natural Aleppo pine forests have been the most affected, but recently, fire tends to affect also the planted forests. The effect of fire on Aleppo pine natur...

In the managed boreal forest, harvesting has become a disturbance as important as fire. To assess whether forest recovery following both types of disturbance is similar, we compared post-disturbance revegetation rates of forests in 22 fire events and 14 harvested agglomerations (harvested areas over 5-10 years in the same vicinity) in the western b...

In this study, we characterised the composition and configuration of post-fire residual habitats belonging to two physiographic zones of the black spruce-moss domain in western Quebec. Thirty-three large fires (2000-52000ha) were selected and extracted on classified Landsat satellite imagery. The results show that a minimum of 2% and a maximum of 2...

La forêt boréale est caractérisée par un régime de feu dynamique au cours du temps. Il a subi beaucoup de changements depuis le Petit Âge glaciaire et les plus significatifs sont la diminution des superficies brûlées et l’allongement du cycle de feu. Depuis plus d’une dizaine d’années, des études se sont intéressées à la question de savoir si ces c...

The effect of forest fire on the vegetation of the domanial forest of Bou-Taleb (Algeria) was studied in the Pinus halepensis ecosystems by the method of tables. These communities which were burned at different dates and other ones unburned (older) are located in north part of the forest. The comparative method showed a post-burn progressive recove...

La forêt algérienne continue toujours à subir de multiples agressions de la part de l'homme par ces diverses actions destructrices et irréfléchies. La forêt des Babors a connu des délits de coupes inquiétantes sur les Cèdres de l'Atlas (Cedrus atlantica) durant les dernières décennies. L'auteur essaie, à partir des photographies prises sur les lie...

L'auteur essaie, à partir d'une analyse historique et statistique, de montrer la place du feu dans l'écosystème forestier en Algérie. Il arrive à la conclusion que l'homme, par ses différentes activités a été et est encore la cause principale de tout déclenchement du feu, du fait de ses anciennes habitudes agricoles et pastorales. Il estime que, pe...

The effect of fire on the plant reconstitution of Aleppo pine (Pinus halepensis) formations was studied in the domanial forest of Bou-Taleb (Algeria). Two fires each have burned four sites. The first one is that of 1957 which has destroyed nearly the totality of the north part of the forest and the others in 1972, 1983, and 1990. This situation has...

The vegetation in Aigeria, especially in the semi dry regions, has incured profound modifications du ring its history. These changes have appeared either in its physionomic or in its flora. This has been caused essentially by human and animal destructive actions : e.g. forests fire, illicit cuts, pasturage. These anthropozoogenic actions have contr...