Biogeography, ecology, and conservation of mayfly communities of relict mountain streams, north‐eastern Algeria

2021 ◽  
Author(s):  
Boudjéma Samraoui ◽  
Joaquín Márquez‐Rodríguez ◽  
Manuel Ferreras‐Romero ◽  
Hamed A. El‐Serehy ◽  
Farrah Samraoui ◽  
...  
Keyword(s):  
Mountain Streams ◽  
North Eastern ◽  
Eastern Algeria

scholarly journals Taxonomy, Distribution and Life Cycle of the Maghrebian Endemic Rhithrogena sartorii (Ephemeroptera: Heptageniidae) in Algeria

Diversity ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 547
Author(s):  
Boudjéma Samraoui ◽  
Laurent Vuataz ◽  
Michel Sartori ◽  
Jean-Luc Gattolliat ◽  
Fahad A. Al-Misned ◽  
...  
Keyword(s):  
Nineteenth Century ◽  
Life Cycle ◽  
Environmental Monitoring ◽  
Species Distribution ◽  
Potential Role ◽  
Mountain Streams ◽  
Molecular Analyses ◽  
North Eastern ◽  
Eastern Algeria ◽  
Taxonomical Study

Despite being recorded in Algeria since the nineteenth century, the genus Rhithrogena has never been the object of a taxonomical study and no identified species is known from this country. Investigations of the relict mountain streams of El Kala, north-eastern Algeria, have led to the discovery of a Rhithrogena population. Morphological and molecular analyses identified the species as the Maghrebian endemic Rhithrogena sartorii, so far known only from neighboring Tunisia. We report on the species’ distribution, status, and life cycle and discuss its potential role as a bioindicator in environmental monitoring.

scholarly journals Ecological determinants of Black Fly assemblages of relict mountain streams in north-eastern Algeria, plus new records (Diptera: Simuliidae)

2021 ◽  
pp. e01609
Author(s):  
Boudjéma Samraoui ◽  
Farrah Samraoui ◽  
Fahad A. Al-Misned ◽  
Hamed A. El-Serehy ◽  
Peter H. Adler
Keyword(s):  
New Records ◽  
Mountain Streams ◽  
Black Fly ◽  
North Eastern ◽  
Eastern Algeria

Ground beetles (Coleoptera: Carabidae) assemblages in two agricultural landscapes in North-Eastern Algeria

2014 ◽  
Vol 40 (2) ◽  
pp. 5-16 ◽  
Author(s):  
Yasmina Saouache ◽  
Salaheddine Doumandji ◽  
Nadia Ouchtati
Keyword(s):  
Ground Beetles ◽  
Agricultural Landscapes ◽  
North Eastern ◽  
Eastern Algeria

Environmental determinants of mayfly assemblages in the Seybouse River, north‐eastern Algeria (Insecta: Ephemeroptera)

Biologia ◽  
2021 ◽  
Author(s):  
Boudjéma Samraoui ◽  
Zineb Bouhala ◽  
Khemissa Chakri ◽  
Joaquín Márquez-Rodríguez ◽  
Manuel Ferreras-Romero ◽  
...  
Keyword(s):  
Environmental Determinants ◽  
North Eastern ◽  
Eastern Algeria

scholarly journals Biodiversity of bulbous and tuberous geophytes from the El Kala National Park (North-Eastern Algeria): checklist, vulnerability and conservation

2019 ◽  
pp. 25-38
Author(s):  
Besma Dechir ◽  
Atef Chouikh ◽  
Tarek Hamel ◽  
Nawel Nadia Azizi ◽  
Nawel Ganaoui ◽  
...  
Keyword(s):  
New Species ◽  
Environmental Variables ◽  
National Park ◽  
Multivariate Analyses ◽  
North Eastern ◽  
Floristic Analysis ◽  
The Subject ◽  
Eastern Algeria ◽  
A New Species

Treinta estaciones en el Parque Nacional El Kala (Noreste de Argelia) fueron objeto de un inventario florístico que se centró en el estudio de la ecología de geófitos bulbosos y tuberosos. La flora se caracteriza por una alta proporción de taxones raros y/o endémicos, entre ellos, 6 especies son endemismos algero-tunecinos pertenecientes a la familia Orchidaceae. En este trabajo, se da a conocer la presencia de una nueva especie para la flora argelina, Ophrys fusca subsp. lupercalis. Los análisis multivariantes revelaron, ciertas variables ambientales que determinan la distribución de los geófitos. Los lugares de interés son particularmente sensibles a las amenazas, particularmente las de origen antrópico. Thirty stations at the El Kala National Park (North Eastern Algeria) were the subject of a floristic focused on the study of the ecology of bulbous and tuberous geophytes. The floristic analysis was used to draw up a checklist of 67 species belonging to 36 genera and 14 families, among of which 19 species a high proportion of rare and/or endemic taxa; among them six signed taxa are endemic to algerian-tunisian mainly represented by family of Orchidaceae. In this work, we recorded the presence of a new species for the Algerian flora which is Ophrys fusca subsp. lupercalis. Multivariate analyses revealed certain environmental variables determining the distribution of geophytes. The visited sites show an alarming vulnerability and subject to threats, particularly anthropogenic ones.

scholarly journals Kherzet Youcef Mine Flooding of 2nd June 1990 Revisited (Northeastern of Algeria) Origine and Hydrogeological Consequences

2021 ◽  
Author(s):  
CHEDDAD Souhila ◽  
Haouchine Abdelhamid
Keyword(s):  
Aquifer System ◽  
Ore Bodies ◽  
Lead And Zinc ◽  
Hydrogeological Study ◽  
Zn Content ◽  
North Eastern ◽  
Mine Flooding ◽  
Hydrogeological Studies ◽  
Eastern Algeria ◽  
And Storage

Abstract This work is part of the hydrogeological study of the Kherzet Youcef deposit. The polymetallic deposit of Kherzet Youcef, known, since the beginning of the 20th century, by the exploitation of Lead and Zinc ore, is located 50 Km southeast of Setif (North-eastern Algeria) and 5.5 Km west of Ain Azel. Mineralization is represented by some ore bodies (about 25). The thickness variate from a few centimeters up to 3m. These bodies are located on the layers of dolomites and dolomitized marls and along the Kherzet Youcef fault. The geological reserves of Zinc and Lead ore are of the order of 1.6 million tons. This ore has a Pb content of 3.6% and Zn content of 18.4%. The projected annual exploitation was 100 thousand tons per year. Hydrogeological studies carried out successively (1973-1977) and (1981-1983) revealed the existence of an aquifer system located west of the Kherzet Youssef fault characterized by the presence of Karts and by strong cracking due to local brittle tectonics. These two characteristics define the filtration and storage capacity of very abundant groundwater. This groundwater represented a major handicap for mining in view of the large amounts of water that required the installation of major pumping and drainage devices. The Kherzet Youssef mine has experienced frequent flooding in the past at a time when technology could not pump efficiently. It caused the mine to close several times. In June 1990, the mine experienced a flood of great magnitude that has never been observed and despite the large installed means of pumping, this "water cost" led to the total drowning of the mine, the death of 19 workers and the stoppage of the exploitation of this deposit since. Pitting attempts were carried out with a pumping capacity of 1100 m3/h, then 1800 m3/h but without success. The interpretation of the drawdown data and field observations made it possible to conclude that this accident was only the result of the general destabilization of the massif. Our complementary work by geophysical prospecting made it possible to represent the configuration of the underground layers and demonstrate the hydrodynamic communication between the two East and West compartments of the deposit.

Nesting ecology of Ferruginous DuckAythya nyrocain north-eastern Algeria

2015 ◽  
Vol 50 (4) ◽  
pp. 299-305 ◽  
Author(s):  
Aicha Fouzari ◽  
Farrah Samraoui ◽  
Ahmed H Alfarhan ◽  
Boudjéma Samraoui
Keyword(s):  
Nesting Ecology ◽  
North Eastern ◽  
Eastern Algeria

scholarly journals Arrested development of abomasal trichostrongylid nematodes in lambs in a steppe environment (North-Eastern Algeria)

Parasite ◽  
2016 ◽  
Vol 23 ◽  
pp. 39 ◽  
Author(s):  
Salah Meradi ◽  
Jacques Cabaret ◽  
Bourhane Bentounsi
Keyword(s):  
Arrested Development ◽  
North Eastern ◽  
Eastern Algeria
Sign in / Sign up

Export Citation Format

Share Document