scholarly journals Biodiversity and distribution of groundwater fauna in the Oum-El-Bouaghi region (Northeast of Algeria)

2019 ◽  
Vol 20 (12) ◽  
Author(s):  
Hichem Khammar ◽  
HADJAB RAMZI ◽  
MERZOUG DJEMOI
Keyword(s):  
Groundwater Fauna ◽  
Aquatic Fauna ◽  
Baited Traps ◽  
North Eastern ◽  
Eastern Algeria ◽  
The City

Abstract. Hichem K, Ramzi H, Djemoi M. 2019. Biodiversity and distribution of groundwater fauna in the Oum-El-Bouaghi region (Northeast of Algeria). Biodiversitas 20: 3553-3558. This study concerns the aquatic fauna of wells and springs in north of the city of Oum El Bouaghi, in the western part of the Tamlouka plain, north-eastern Algeria. 16 wells and two springs were selected and a seasonal sampling of the aquatic fauna was carried out from September 2017 to May 2018, covering periods of high and low water. Two types of traps were used: the phreatobiological net and baited traps. The composition of fauna was found to be 26 taxa and 6617 individuals, dominated by Crustaceans 47% followed by insects and shellfish 23% for each. Only one stygoby species was collected mainly: Pseudoniphargus djemoi.

scholarly journals Groundwater Quality in Two Semi-Arid Areas of Algeria: Impact of Water Pollution on Biodiversity

2020 ◽  
Vol 7 (3) ◽  
pp. 16-34 ◽  
Author(s):  
Redjaimia Lylia ◽  
Hadjab Ramzi ◽  
Khammar Hichem ◽  
Merzoug Djemoi ◽  
Saheb Menouar
Keyword(s):  
Hot Springs ◽  
Well Water ◽  
Dumping Site ◽  
North Eastern ◽  
Eastern Algeria ◽  
The City ◽  
Subterranean Waters ◽  
Semi Arid ◽  
Subterranean Water

The biodiversity and quality of subterranean waters were comparatively studied in the Tarf plain near Oum-El-Bouaghi and in the Ksar S’bahi in Oum-El-Bouaghi, in North-eastern Algeria. For this purpose, physicochemical and faunistic analyses were carried out on the water of ten stations located in the area of Tarf, and thirteen in the area of S’bahi. In the wells of Tarf, the average stygobiologic diversity was relatively high in the wells located upstream the dumping site from the city where the groundwater presented low contents of nitrates and orthophosphates. In contrast, the wells located in the spreading zone of Tarf wastewaters were characterized by the scarcity or the absence of stygobic species; in these latter wells, the water was highly polluted. It was rich in nitrates, nitrites, ammonium, and the conductivity was rather high. In the area of S’bahi, the faunistic inventory recorded ten species, some of which were living in hot springs. The subterranean water was highly mineralized. In the two studied areas, biodiversity decreased when well water was locally polluted.

scholarly journals The Impact of Commercial Mutations on Historical Buildings in Algeria: Case of Colonial Quarters in The City of Annaba

2021 ◽  
Author(s):  
Mounira Mihoubi ◽  
Keyword(s):  
Residential Buildings ◽  
Tenth Century ◽  
Architectural Heritage ◽  
Left Behind ◽  
Commercial Activities ◽  
North Eastern ◽  
Social And Economic Development ◽  
Eastern Algeria ◽  
The Impact ◽  
The City

The commercial dynamics that the city of Annaba has experienced in recent decades, due to social and economic development and market liberalization, have changed its urban and architectural heritage. This city, located in north-eastern Algeria and created before the tenth century, has seen many civilizations and dynasties pass by. Every civilization has left behind traces that time has sometimes taken care of protecting them, to bequeath us or erasing them completely. This heritage wealth testifying and telling the story of our ancestors' past, unfortunately, began to lose its value and originality after the transformations and modifications that took place in the old residential buildings inherited from two opposing cultures by integrating new forms of commercial activities. The objective of this communication is to analyse and measure the evolution of these mutations, with a focus on the ancient colonial areas of the city of Annaba where the phenomenon is most pronounced.

scholarly journals Impact of Anthropic Pressure on the Quality and Diversity of Groundwater in the Region of Sighus Oum-El-Bouaghi and El Rahmounia, Algeria.

2020 ◽  
Vol 7 (3) ◽  
pp. 85-105
Author(s):  
HADJAB RAMZI ◽  
KHAMMAR HICHEM ◽  
REDJAIMIA LYLIA ◽  
MERZOUG DJEMOI ◽  
SAHEB MENOUAR
Keyword(s):  
Water Quality ◽  
Human Activity ◽  
Arid Regions ◽  
The Other ◽  
Aquatic Fauna ◽  
North Eastern ◽  
Eastern Algeria ◽  
The Relationship ◽  
Semi Arid ◽  
Anthropic Pressure

Groundwater of Oum-El-Bouaghi and its surroundings hosts a variety of microflora and fauna. This study investigated the relationship between the effect of human activity and the biodiversity and distribution of aquatic fauna in two semi-arid regions Sighus region (Oum-El-Bouaghi) and El Rahmouni (Constantine) in north-eastern Algeria. Fourteen wells and six springs were studied in two hydrographic basins, that of Constantine and Seybouse Melegue. Significant differences were revealed between the wells and springs in the two watersheds, making it possible to distinguish four groups of wells and two groups of springs. The overall faunal richness of the stations appeared to be weakly correlated with water quality, but on the other hand, the specific richness of the stygoby fauna, and even more so the abundance of stygoby species, decreased when water quality deteriorated.

scholarly journals Diversity and abundance of terrestrial gastropods in Skikda region (North-East Algeria): correlation with soil physicochemical factors

2021 ◽  
Vol 82 (1) ◽  
Author(s):  
Nedjoua Zaidi ◽  
Louiza Douafer ◽  
Amel Hamdani
Keyword(s):  
Inventory Data ◽  
Gastropod Species ◽  
Terrestrial Gastropods ◽  
North East ◽  
Physicochemical Factors ◽  
North Eastern ◽  
Cornu Aspersum ◽  
Eastern Algeria ◽  
The Relationship ◽  
The City

Abstract Background The inventory process is the first method to protect and safeguard animal biodiversity. This study carries out a quantitative and qualitative inventory of terrestrial gastropods at three sites in Skikda province (north-eastern Algeria). The relationship between terrestrial gastropod diversity and soil physicochemical factors was investigated using statistical analyses. Results The inventory data reveals the presence of four families and eight species showing varied predominance rates of Cornu aspersum species according to each site in the city of Skikda (Azzaba 53.88%; Ben-Azzouz 56.12%; El-Hadaiek 37.92%). The maximal specific richness was registered in the El-Hadaiek site (seven species), and the highest mean richness was noted in the Ben-Azzouz site (392 individuals). Of the eight gastropod species identified, three species (Cornu aspersum, Cantareus apertus and Rumina decollate) were classified as constant species. The Shannon–Weaver diversity and equitability indices vary by site. Conclusion The presence of certain species in one site and their absence in other sites, as well as the variation in ecological indices, could be attributed to the effect of soil-physicochemical factors.

The influence of submesoscale eddies on hydrochemical parameters and structural and functional characteristics of phytoplankton in the north-eastern part of the Black Sea

2019 ◽  
pp. 24-40
Author(s):  
Sergey B. Kuklev ◽  
Vladimir A. Silkin ◽  
Valeriy K. Chasovnikov ◽  
Andrey G. Zatsepin ◽  
Larisa A. Pautova ◽  
...  
Keyword(s):  
Anticyclonic Eddy ◽  
The Black Sea ◽  
Hydrochemical Parameters ◽  
North East ◽  
The North ◽  
Seasonal Thermocline ◽  
North Eastern ◽  
Quantitative Indicators ◽  
The City ◽  
North Eastern Part

On June 7, 2018, a sub-mesoscale anticyclonic eddy induced by the wind (north-east) was registered on the shelf in the area of the city of Gelendzhik. With the help of field multidisciplinary expedition ship surveys, it was shown that this eddy exists in the layer above the seasonal thermocline. At the periphery of the eddy weak variability of hydrochemical parameters and quantitative indicators of phytoplankton were recorded. The result of the formation of such eddy structure was a shift in the structure of phytoplankton – the annual observed coccolithophores bloom was not registered.

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

scholarly journals Gonoactivity of Culex (Culex) (Diptera: Culicidae) Mosquitoes During Winter in Temperate Argentina

2021 ◽  
Author(s):  
María Florencia Branda ◽  
Magdalena Laurito ◽  
Andrés Mario Visintin ◽  
Walter Ricardo Almirón
Keyword(s):  
Developmental Stage ◽  
Culex Quinquefasciatus ◽  
Culex Pipiens ◽  
Life Cycles ◽  
Morphological Identification ◽  
Dry Ice ◽  
Culex Pipiens Pipiens ◽  
Host Seeking ◽  
Baited Traps ◽  
The City

Abstract The subgenus Culex L. includes species involved in summer–autumn arbovirus transmission but studies during winter are scarce in temperate Argentina. Female specimens were collected host-seeking at dry-ice-baited traps during autumn–winter–spring at two sites in Córdoba City during 2016 and 2017. The specimens were morphologically identified and dissected to determine the follicular developmental stage (gonotrophic activity). Females with advanced follicular stages (≥III) were subjected to molecular procedures to confirm or re-identify previous morphological identification. Five species (Culex apicinus Philippi (Diptera: Culicidae), Culex dolosus (Lynch-Arribálzaga) (Diptera: Culicidae), Culex maxi Dyar (Diptera: Culicidae), Culex pipiens pipiens L. (Diptera: Culicidae), and Culex quinquefasciatus Say (Diptera: Culicidae)) were collected and found gonoactive during winter; showing that a high proportion of Culex (Culex) females remain reproductively active during the unfavorable season for mosquito populations. Among them, it is worth noting the collection of Cx. quinquefasciatus, vector of the St. Louis encephalitis virus (endemic in the city), a specimen of Cx. p. pipiens, and a hybrid of Cx. p. pipiens/Cx. quinquefasciatus (during autumn). The study of this community during winter should continue because a high gonoactive female proportion with advanced follicular stages was found: 29.12 and 13.07% in 2016 and 2017, respectively. Local studies such as this one provide evidence about ornithophilic Culex species with active year-round life cycles, species that could favor arbovirus overwintering.

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

Introgression between non-sister species of honeyeaters (Aves: Meliphagidae) several million years after speciation

2019 ◽  
Vol 128 (3) ◽  
pp. 583-591
Author(s):  
Leo Joseph ◽  
Alex Drew ◽  
Ian J Mason ◽  
Jeffrey L Peters
Keyword(s):  
Gene Flow ◽  
Reproductive Isolation ◽  
Sex Chromosomes ◽  
Common Ancestor ◽  
Sister Species ◽  
Species Boundaries ◽  
North Eastern ◽  
The City

Abstract We reassessed whether two parapatric non-sister Australian honeyeater species (Aves: Meliphagidae), varied and mangrove honeyeaters (Gavicalis versicolor and G. fasciogularis, respectively), that diverged from a common ancestor c. 2.5 Mya intergrade in the Townsville area of north-eastern Queensland. Consistent with a previous specimen-based study, by using genomics methods we show one-way gene flow for autosomal but not Z-linked markers from varied into mangrove honeyeaters. Introgression barely extends south of the area of parapatry in and around the city of Townsville. While demonstrating the long-term porosity of species boundaries over several million years, our data also suggest a clear role of sex chromosomes in maintaining reproductive isolation.

OTTOMAN INFLUENCES ON THE SIDI EL KETTANI MOSQUE IN CONSTANTINE ALGERIA

2021 ◽  
Vol 3 (4) ◽  
pp. 173-182
Author(s):  
Malika MEKKAS
Keyword(s):  
Unique Characteristic ◽  
Architectural Style ◽  
French Colonialism ◽  
Eastern Algeria ◽  
The City

The city of constantine is considered one of the algerian cities , that witnessed tremendous urban and architectural devlopment during the ottoman era, and the ottoman chose it to be the capital of eastern algeria, and the city witnessed during this period the building of many mosques but most of these monuments were subjected to sabotage and destruction from the party of french colonialism, and perhaps the most important models that still presrve a large part of their orignal style, we mention the sidi el kettani mosque which was built by salih bey as it combined the local architectural style, with the incoming ottoman style and this gave it a unique characteristic in the field of architecture in addition, to its richness of exquisite architectural and decorative elements

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