6 research outputs found
Selection Strategy of Small Mammalian Preys by the Common Genet Genetta Genetta between Natural and Anthropized Environments in Edough Forest Massif (Northeastern Algeria)
No full textWe analyzed fluctuations in of small mammals’ biodiversity through the winter diet of the common genet Genetta genetta (Linnaeus, 1958), to deduce the predator - adopted strategy according to the habitat conditions in which it occurs, particularly in anthropogenic environments. The field sampling was conducted during the 2020 winter season, in two contrasting environments of the Edough mountain range: natural site (Ain Boukal), and anthropized site (Bouzizi landfill). The analysis of 30 collected excrements in each of the two sites, allowed us to identify different food categories including small mammals. The result shows that the common genet is an excellent sampler of small mammals by consuming at least four taxonomic genera. The results also show that despite that the genet is a generalist predator with a wide food spectrum, the results show that it had exercised a selectivity on small mammals, preferentially on genera Apodemus which was abundant in the natural habitat. However, in the anthropized habitats, the genet was opportunistic feeding on waste and abundant small mammals, mainly for the genera Rattus
Comparative Effects of Wild Boar (<i>Sus scrofa</i>) Rooting on the Chemical Properties of Soils in Natural and Post-Fire Environments of the Edough Forest Massif (Northeastern Algeria)
No full textWild boars use a wide range of habitats. Their invasive nature is gaining attention due to the complexity of its impact. The goal of this research is to analyze the impact of the wild boar on the chemical properties of soils in a natural and a post-fire forest in the Edough Forest Massif in Algeria. This study compares the impact of wild boar rooting on soil parameters to determine the functional role of the wild boar. The research was conducted during the winter of 2022. The study sites included a natural forest and a post-fire area. Rooting tracks were geolocated and soil samples were collected. The results show significant differences between rooted and control patches in the chemical parameters measured in the two environments. However, in the natural environment, significant differences were only noted for the calcium content and electrical conductivity. But in the post-fire environment, strong significant differences were observed for all measured parameters, suggesting that wild boars do not exert a noticeable soil homogenization effect on the soil properties. This research highlights the importance of understanding and managing the impact of wild boars in natural and post-fire forests on soil formation processes, the diversity of soil properties, and their magnitude
Environmental and Habitat Preferences of the Algerian Hedgehog Atelerix Algirus(Lereboullet, 1842) in El Kala National Park (North-East Algeria)
No full textWe conducted this study to identify the preferred habitat of Atelerix algirus in the National Park of El Kala (PNEK), through the analysis of the catches rates of the species combined to an ethno zoological survey carried out among the residents. The study was conducted between January 2010 and December 2011, in five localities of the Park, different by their useful areas (forests and agricultural land) and their degree of urbanization: Raml Souk, El Aioun, Berrihane, El Kala and Bougous. We also surveyed 57 residents of Berrihane locality. Our results identified the locality of Berrihane as the preferred area of life for the species within the PNEK. This area, which has the highest abundance, is rather semi-urban and as much forest as agricultural, meeting the different needs of the species in terms of survival, sustainability and reproduction. This study provided fundamental data on the bio-ecology of this urban adapt species in Mediterranean environments
BIODIVERSITY OF MACROINVERTEBRATES IN A STREAM OF MOUNT EDOUGH (NORTHEASTERN, ALGERIA)
No full textThe current study seeks to evaluate the biodiversity and the structure of the onstream macroinvertebrates community assemblage in Edough Mountain in north-eastern Algeria. Data was collected between April and June 2019 along a mountain stream, from its source to its outlet, with analysis of some physico - chemical parameters. After capturing 906 specimens, we were able to identify 08 taxonomic orders and 35 taxonomic families. The results showed that the richest and most abundant families are Dytiscidae (Coleoptera) and Corixidae (Heteroptera)
DOES THE AFRICAN GOLDEN WOLF, Canis anthus, PLAY THE ROLE OF REGULATOR OF NATURAL MICROMAMMAL POPULATIONS IN THE EDOUGH MOUNTAIN RANGE (NORTHEASTERN ALGERIA)?
No full textThe objective of this study is to analyse the share of small mammals in the diet of the African Golden Wolf (Canis anthus), to deduce its functional role as regulator of densities of this food category.
Methods: Sampling campaign was carried out during the winter period 2020, when trophic resources are least abundant, and when the small mammals are most abundant. We choosed two different ecological conditions to conduct the scats sampling in the Edough Mountain Range, once in the natural environment of Berouaga and the second in Ain Barbar landfill. 30 droppings were collected in the field and at each site, then sterilized, washed, sorted and identified in the laboratory.
Results: We were able to identify rodents, wild boar’s carcass, arthropods, birds, plants and wastes (plastic bag, papers, aluminium foils..). Occurrence frequencies analysis of item preys stand shows that the African golden wolf consumes micromammals less frequently in the natural environment, to avoid interspecific competition pressure with other predators like common genets, and does not consume them at all in the anthropized environment, since the anthropogenic resources are abundant, easily accessible and requiring no energy loss.
Conclusion: By its opportunistic behavior, the African Golden Wolf turns away from its role as regulator of natural populations of small mammals, in the presence of anthropogenic resources
Selection Strategy of Small Mammalian Preys by the Common Genet Genetta Genetta between Natural and Anthropized Environments in E onments in Edough F dough Forest Massif (Nor est Massif (Northeastern Algeria) theastern Algeria)
No full textWe analyzed fluctuations in of small mammals’ biodiversity through the winter diet of the
common genet Genetta genetta (Linnaeus, 1958), to deduce the predator - adopted strategy
according to the habitat conditions in which it occurs, particularly in anthropogenic
environments. The field sampling was conducted during the 2020 winter season, in two
contrasting environments of the Edough mountain range: natural site (Ain Boukal), and
anthropized site (Bouzizi landfill). The analysis of 30 collected excrements in each of the two
sites, allowed us to identify different food categories including small mammals. The result
shows that the common genet is an excellent sampler of small mammals by consuming at
least four taxonomic genera. The results also show that despite that the genet is a generalist
predator with a wide food spectrum, the results show that it had exercised a selectivity on
small mammals, preferentially on genera Apodemus which was abundant in the natural
habitat. However, in the anthropized habitats, the genet was opportunistic feeding on waste
and abundant small mammals, mainly for the genera Rattus
