Temporal variations in abundance and biomass of fish species inhabiting the K’sob reservoir (Eastern of Algeria)

Abstract

This study presents data on fish community structure in the K'sob reservoirs (semi arid area) in the East of Algeria. The artisanal fishery was conducted from September 2010 to August 2011. The monthly variations in species composition were analyzed by effort and catch per unit of effort (CPUE) and biomass per unit of effort (BPUE). A total of seven species representing three families was recorded in the investigated reservoir. Cyprinids dominated in this reservoir. Luciobarbus callensis is the native species captured in this area, the rest of the fish were introduced. The other Cyprinids are: Cyprinus carpio carpio, Hypophthalmichthys molitrix, Hypophthalmichthys nobilis, Squalius cephalus. The Poecilidae were represented by Gambusia holbrooki. The third family, Cichlidae, was represeted by Oreochromis niloticus. The dominant species in terms of abundance was L. callensis, however, C. carpio carpio and H. nobilis showed higher values in biomass. Several species showed significant temporal variation in monthly samples. The fish assemblage is dominated by invasive species, while predatory species were not detected in the study.

Freshwater fish distribution in the Maghreb: a call to contribute

“…All available GBIF point occurrence records for each of these species were then downloaded as individual shapefiles. These spatial data were combined with our own field sampling records plus georeferenced records from existing published literature (Boutellier, 1918;Dollfus, 1955;Furnestin et al, 1958;Libois et al, 1997Azeroual, 2003;Bacha & Amar, 2007;Nait-Larbi, 2011;Qninba et al, 2011Qninba et al, , 2012Renaud, 2011;Clavero et al, 2014;Mimeche & Oliva-Paterna, 2018). The territories of Ceuta, Melilla and Western Sahara were subsequently omitted from the study due to a lack of data.…”

Diversity of arthropods subservient to olive groves in arid region (Northeastern Algeria)

“…The rainy season spans from October to May, while the dry season typically persists until August. The region's Mediterranean climate is influenced by the Sahara (Mimeche and Oliva-Paterna, 2018). Hydrologically, this environment is linked to a rainfall regime marked by pronounced irregularities leading to the absence of permanent flows from most watercourses (Mimeche, 2014).…”