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Departement of Nature and life sciences
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Recent Publications
Distribution pattern of waterbirds in Algerian Central Hauts Plateaus wetlands
Citation
M. BENSACI Ettayib, (2024-12-19), "Distribution pattern of waterbirds in Algerian Central Hauts Plateaus wetlands", [international] 2nd International Tunisian-Algerian Scientific Seminar : Applied Sciences and Sustainable Development. , Tunisia
Species composition, relative abundance, and habitat association of Waterbirds in the Sahara wetlands of Algeria
Citation
M. BENSACI Ettayib, (2024-12-19), "Species composition, relative abundance, and habitat association of Waterbirds in the Sahara wetlands of Algeria", [international] 2nd International Tunisian-Algerian Scientific Seminar : Applied Sciences and Sustainable Development. , Tunisia
Assessing the Presence of Metals in Surface Waters: a Case Study Conducted in Algeria Using a Combination of Artificial Neural Networks and Multiple Indices
hazards to human health and ecological balance. Given increasing urbanization and activities in places
like Algeria, it is crucial to closely monitor and effectively control heavy metal pollution in surface
water. This study proposes the use of artificial neural networks (ANN) and various indicators to comprehensively
assess metal contamination in Algerian surface waters and its implications for public
health. Sixteen water samples were collected for the composition analysis and source identification.
Measurements indicated that several areas exceed the World Health Organization (WHO) limits for
four metals. Methods such as the Heavy Metal Evaluation Index (HEI) and Heavy Metal Pollution
Index (HPI) were employed to assess pollution levels. Results showed that over 99% of samples exhibited
significant pollution according to HPI, with 60% showing elevated pollution levels by HEI, highlighting
substantial contamination risks. Principal Component Analysis (PCA) revealed that the first
two components accounted for 93.540% of total variation, with subsequent components contributing
6.459% or less. PCA 1 and PCA 2, representing 49.084 and 44.456% of variability, respectively, were
identified as primary components, while PCA 3 and PCA 4 each contributed less than 5.015 and 1.444% to
total variance. The study demonstrated minimal error values and R2 values exceeding 0.5 during the testing
of heavy metal models, indicating robust performance. Overall, this study underscores the prevalence
of elevated metal levels in water bodies, providing comprehensive insights into heavy metal contamination
in Algerian basins to assist environmental management decisions and protect public health.
Citation
M. BENSACI Ettayib, (2024-07-19), "Assessing the Presence of Metals in Surface Waters: a Case Study Conducted in Algeria Using a Combination of Artificial Neural Networks and Multiple Indices", [national] Journal of Water Chemistry and Technology , PLEIADES PUBLISHING INC
Long-term dynamics of remote sensing indicators to monitor the dynamism of ecosystems in arid and semi-arid areas: contributions to sustainable resource management
fluctuations and conserving biodiversity. In this study, we assessed the long-term variability of remote sensing indicators in 25 watershed
areas in Algeria known for their significant biodiversity. We employed two statistical methods, namely linear regression and the Mann–
Kendall (MK) test, to capture long-term fluctuations by integrating data from various sources, including Modis and Landsat satellite data.
A time-series dataset spanning 22 years was developed, consisting of the following indicators: normalized difference vegetation index
(NDVI), enhanced vegetation index (EVI), normalized difference water index (NDWI), normalized difference moisture index (NDMI), and land
surface temperature (LST). We evaluated the relationships between these variables. The results indicated that NDVI exhibited a stronger temporal
response compared to EVI, NDWI, and NDMI. Additionally, negative associations between NDVI and LST confirmed the impact of
drought and plant stress on vegetation in the study areas (R2 ¼ 0.109–R2 ¼ 0.5701). The NDMI results pointed to water stress in the water
bodies, showing a significant decreasing trend. The results from the MK trend analysis underscored the importance of NDVI and highlighted
its strong association with EVI, NDWI, and NDMI. Understanding the dynamics of vegetation and water stress has become crucial for ecosystem
forecasts.
Key words: Algeria, indicators, remote sensing, vegetation, watersheds
Citation
M. BENSACI Ettayib, (2024-03-16), "Long-term dynamics of remote sensing indicators to monitor the dynamism of ecosystems in arid and semi-arid areas: contributions to sustainable resource management", [national] Journal of Water and Climate Change , IWA PUBLISHING
Assessment of the long‑term effects of climate on vegetation in 25 watersheds in dry and semi‑dry areas, Algeria
particularly with regard to ecosystems and environmental balance. 25 watersheds were
selected in Algeria for this study. Here, the vegetation index (NDVI) and climatic variables
(precipitation and temperature) were used to verify the temporal-spatial patterns and
impact of the time difference from 1981 to 2021 by applying the correlation coefficient and
time delay analysis. The NDVI showed a significant decline, especially in recent years, and
spatial differences in NDVI in all areas of study were narrow (slope values from 0.0005
to 0.04), decrease in surface water area from year to year was observed in all regions. The
vegetation index was negatively associated with low rainfall and high temperatures. The
vegetation’s reaction to temperature has been greater than that too rainfall. In general, a
time lag in the vegetation response was found over a time period of at least 1 month. This
study provided new insights into variations in vegetation change and the importance of
vegetation recovery.
Citation
M. BENSACI Ettayib, (2024-03-14), "Assessment of the long‑term effects of climate on vegetation in 25 watersheds in dry and semi‑dry areas, Algeria", [national] Natural Hazards , Springer
Comprendre la Dynamique de la Réponse de la Végétation au Changement Climatique et Élucider les Causes de la Sécheresse dans le Bassin de Reghaia : Une Étude Complète Utilisant les Données MODIS.
Citation
M. BENSACI Ettayib, esra pulat, Ateşoğlu Ayhan, , (2023-11-15), "Comprendre la Dynamique de la Réponse de la Végétation au Changement Climatique et Élucider les Causes de la Sécheresse dans le Bassin de Reghaia : Une Étude Complète Utilisant les Données MODIS.", [international] International sGIS DAY Algeria (4th edition) Annaba 15th Nov 2023 , annaba
ENVIRONMENTAL FACTORS AFFECTING NEST-SITE SELECTION OF BREEDING YELLOW-LEGGED GULLS IN CONTINENTAL SEMI-ARID AREA (ALGERIA)
michaehellis is considered as an ideal species to investigate effects of environmental factors change. The breeding ecology of the
Yellow-legged Gull was followed for the first time in the continental semi-arid area in Algeria, during two consecutive years 2014
and 2015. The breeding site (Ain Zada dam) located in the Central Hauts Plateaux around 60 Km far from the Mediterranean Sea.
Comparatively to previews observations, a rapid and massive growth of this marine species in the continental regions of the country
was observed. In the aim to analyze factors affecting nest-site selection some environmental parameters influencing breeding
parameters were surveyed such as nest density, vegetation density and height. Our results, showed the direct effect of water
availability on the nest site selection and laying period in the semi-arid area. The mean nest density found in the study area (0.73 ±
0.15 nest/m2) was higher than those reported in other Mediterranean colonies. However, nest density associated with vegetation
density, but negatively correlated with island size.
Citation
M. BENSACI Ettayib, saheb_tahar@yahoo.fr, Billal gasmi, lhadi mailbi, , (2023-11-10), "ENVIRONMENTAL FACTORS AFFECTING NEST-SITE SELECTION OF BREEDING YELLOW-LEGGED GULLS IN CONTINENTAL SEMI-ARID AREA (ALGERIA)", [national] Analele Universităţii din Oradea, Fascicula Biologie , University of Oradea Publishing House
Monitoring the effect of droughts and extreme climate variables for various time periods on vegetation density in the Reghaia catchment, Algeria.
Citation
M. BENSACI Ettayib, (2023-05-30), "Monitoring the effect of droughts and extreme climate variables for various time periods on vegetation density in the Reghaia catchment, Algeria.", [national] Natural Resources and Sustainable Development , ERIH PLUS
Spatio-Temporal Variation Patterns of Bird Community in the Oasis Ecosystem of the North of Algerian Sahara
of the North of Algeria Sahara. This contribution aimed to investigate the poorly studied bird
fauna of Bousaâda oasis. The direct observation method was used for bird counts, adopted
only during the breeding period. A total of 53 species of birds from 29 families and 16 orders
were assessed in the different habitats of the Oasis (palm, fruit trees and, cultivated crops).
The Passeriformes order was the most abundant represented by 35 species and 16 families.
The relative abundance and species richness were recorded during our study period over
different seasons and thought that whole surveyed stations represent all the oasis habitats.
The Boussaâda oasis holds 18 resident-breeders which is a transit zone for a number of
migratory birds i-e 14 and 10 species for summer and winter migrants respectively) and11
occasional visitor ones. These results confirmed the positive effects of stations and seasons
on the richness and abundance of birds of Bousaâda oasis.
Citation
M. BENSACI Ettayib, (2021), "Spatio-Temporal Variation Patterns of Bird Community in the Oasis Ecosystem of the North of Algerian Sahara", [national] Journal of Bioresource Management , Wright State University
DIVERSITY, ECOLOGY AND THERAPEUTIC PROPERTIES OF THE MEDICINAL PLANTS IN ZIBAN REGION (ALGERIA)
properties in the Ziban region (Algeria), a survey was conducted along two successive study
years in the main area. The objective of this study was to contribute to the knowledge and
description of this plant groups with exhaustive inventory spontaneous vegetation. In order to
study the dynamics of medicinal plants, we used a quantitative method based essentially on
the classic technique of linear surveys and floristic inventory using the minimum area
method. The results showed that the floristic procession of medicinal plants is represented by
21 species belonging to the 13 families, with a total of 31 species for the 08 study stations,
which represents 68% of the total procession. The results obtained showed that the overall
recovery is higher at the Ain Ben Noui station with 69%, even if the clumps of Aristida
pungens, Atractylis serratuloides and Atriplexhalimus are isolated and scattered. The lowest
overall coverage at the Oumache station is less than 21%, as it is an area with sandy soils.
The species that contribute most to the recovery of mobile sand accumulations is Astragalus
armatus with a rate of 76.19% at the Ain Ben Noui station. Frequency results allowed us to
say that Atriplex halimus and Zizyphus lotus are the ubiquitous species (100% of the surveys).
On the other hand, Nitraria retusa, Teucrium polium, Shismus barbatus, Sueda mollis and
Halocnemum strobilaceum are the species present in only one survey.
Citation
M. BENSACI Ettayib, Hadjab Ramzi, , (2021), "DIVERSITY, ECOLOGY AND THERAPEUTIC PROPERTIES OF THE MEDICINAL PLANTS IN ZIBAN REGION (ALGERIA)", [national] Journal of Bioresource Management , Wright State University
SURFACE WATER QUALITY ASSESSMENT IN SEMI-ARID REGION (EL HODNA WATERSHED, ALGERIA) BASED ON WATER QUALITY INDEX (WQI)
the waters of the El Hodna watershed are unfit for human consumption, irrigation, and aquatic life. The obtained results have shown that different types of pollution (industrial, domestic and agricultural) affect the waters of the El Hodna watershed, which lead to degrade the water quality of this aquatic ecosystem and consequently its biodiversity and public health.
Citation
M. BENSACI Ettayib, MOHAMMED TAHAR HALILAT, , (2021), "SURFACE WATER QUALITY ASSESSMENT IN SEMI-ARID REGION (EL HODNA WATERSHED, ALGERIA) BASED ON WATER QUALITY INDEX (WQI)", [national] STUDIA UBB CHEMIA , STUDIA UNIVERSITATIS BABEŞ-BOLYAI
Effects of vegetation and water seasonal variation on habitat use of herons (Aves, Ardeidae) in Tonga Lake (North-East Algeria)
environmental factors such as water features and vegetation cover on the
distribution and habitat use of herons over different seasons of the bird’s life
(breeding, passage and wintering) in Tonga Lake (North East Algeria) from
March 2017 to February 2018. We used remote sensing techniques to study the
environmental factors variations, we adopted the normalized difference
vegetation index (NDVI) to give an estimate of vegetation cover and we used the
normalized difference water index (NDWI)to study the water features. In our
study, we determine that the abundance and richness of herons species is largely
influenced by the water features and vegetation cover. The seasonal variations
in the amount of these environmental factors areknown to affect the availability
of various food items for herons. Eight species of herons were identified during
the study period. Pearson’s Correlation Coefficient was used to examine the
effect of NDVI and NDWI on the distribution of herons. The results showed that
the NDVI was significantly positively correlated with richness and abundance of
herons respectively (r=0.728, p<0.05) (r=0.651, p<0.05), wherease the NDWI
was significantly negatively correlated with the richness and abundance of
herons (r=-0.65, p<0.05) (r=-0.69, p<0.05) respectively.
Citation
M. BENSACI Ettayib, (2019), "Effects of vegetation and water seasonal variation on habitat use of herons (Aves, Ardeidae) in Tonga Lake (North-East Algeria)", [national] STUDIA UNIVERSITATIS BABEŞ-BOLYAI BIOLOGIA , STUDIA UNIVERSITATIS BABEŞ-BOLYAI BIOLOGIA
Nest characteristics aNd breediNg success of black kites (Milvus Migrans Migrans) iNthe high Plateau (algeria)
in 2014 and 2015 on Tarf Mountain in the semi-arid High Plateaus region. The nearest-neighbour
nest distance was found to range from 130 to 550 m for colonial pairs and from 1,730 to 2,390 m for
the solitary ones. All 12 monitored nests were placed on cliffs at different heights ranging from149
to 155 m. The mean egg laying period was 15 days, and the mean clutch size was 2.83 ± 0.31 and 3
± 00 eggs per nest in 2014 and 2015, respectively. The mean hatching success was 83% and that of
fledging 75%. Only 2 nests were predated. Our results disagree with those of the previous studies that
were carried out mainly in the Mediterranean basin and Asia, differing in such nest characteristics
as the nearest-neighbour nest distance, cliff and nesting heights, egg laying period and hatching success. Otherwise, no consistent differences in clutch size and fledging success were revealed. Finally,
we determined that Black Kites tend to build their nest on the eastern side of cliffs. However, our
analysis showed no effect of nest placement on breeding parameters and success.
Citation
M. BENSACI Ettayib, (2019), "Nest characteristics aNd breediNg success of black kites (Milvus Migrans Migrans) iNthe high Plateau (algeria)", [national] Zoology and Ecology, , Françis Taylor
Diversity of macro-invertebrates inLake Tonga (northeast Algeria)
being a good indicator for the health of the aquatic ecosystem. Our study presents an inventory of macro-invertebrates in the shores
of Lake Tonga (wetland of international importance – Ramsar Site). The sampling was conducted between January to May 2017 and
in three stations (Fad smar, Wadi El Hout and Fad El Alig). Theywere identified to family level. We provide a checklist and some
observations on 20 families belonging to six orders. The taxonomic richness shows fluctuations between the studied stations, 13
families in Fad smar station, 14 in Wadi El Hout station and 17 families in Fad El Alig. Hemeptera, Coleoptera and Gasteropoda are
dominant in the area. Factorial analysis of correspondence revealed significantly different macro-invertebrates assemblages among
the stations of Lake Tonga.
Citation
M. BENSACI Ettayib, (2019), "Diversity of macro-invertebrates inLake Tonga (northeast Algeria)", [national] BIHAREAN BIOLOGIST , Biharean Biologist, Oradea, Romania
Behavior and Breeding phenology of the Ruddy Shelduck tadorna ferruginea Ziban in dry grasslands (Algerian steppe).
Keys words: Ruddy Shelduck, Todorna ferruginea, Algeria, statut, Sahara, breeding, time budget.
Citation
M. BENSACI Ettayib, guergueb El yamin, , (2019), "Behavior and Breeding phenology of the Ruddy Shelduck tadorna ferruginea Ziban in dry grasslands (Algerian steppe).", [national] L'apport des biotechnologies sur la protection de l'environnement , M'Sila
Bird Fauna of Eastern Great Erg of Algerian Sahara: Status, Protection and Conservation.
Bird fauna is probably the most well studied group in Algeria. Over the past 20 years, the spatial and temporal compositions of birds communities in different habitats in arid and Saharan areas mainly the Eastern Great Erg of Algeria, which considered important hotspot for many species. These efforts yielded a great amount of data on distribution patterns of each species.
A group of Researchers, academics, students and enthusiasts were gathered in April, 2013 to create “The Algerian National Association of Ornithology (ANAO)” that aims essentially to conserve and preserve the most threatened biodiversity.
We will present our association and its objectives for biodiversity conservation, particularly in the Sahara, also to look for collaboration opportunities to develop research projects on Algerian Sahara wildlife.
Keywords: Great Erg, Sahara, conservation, biodiversity, ANAO
Citation
M. BENSACI Ettayib, merouani Sakina, , (2019), "Bird Fauna of Eastern Great Erg of Algerian Sahara: Status, Protection and Conservation.", [national] L'apport des biotechnologies sur la protection de l'environnement , M'Sila
Preliminary data on the diversity pattern of waterbirds of Chott El-Hodna (Central High Plateaux-Algeria)
results obtained through monthly companies of waterbirds counts started from September 2007 to
September 2009. On this wetland of international importance under Ramsar convention, a total of 39
species of water birds representing 12 families have been recorded. The family of ducks is the most
represented by 10 species. Amongst of all species, 20 of them are wintering species, 12 are visitors, 06
are resident breeder species as well as the Ruddy Shelduck Tadorna furruginea and Black-winged Stilt
Himantopus himantopus etc. Only one species has breeder- migrant status as well as the white stork
Ciconia ciconia. However, 11 species are protected under Algerian law, which one species is listed in
(VU) Category of Red List of endangered species (Teal marbled Marmaronetta angustirostris) by the
International Union for Conservation of Nature (IUCN).
Citation
M. BENSACI Ettayib, Asma Zoubiri, El Yamine Guergueb, Menouar Saheb, Moussa Houhamdi, , (2019), "Preliminary data on the diversity pattern of waterbirds of Chott El-Hodna (Central High Plateaux-Algeria)", [international] International Biodiversity & Ecology Sciences Symposium , Istanbul / Turkey
Diversity and distribution pattern of waterbirds in wetlands of Algerian steppe region
located in Algerian steppe region. a survey was conducted along four successive study years in the main
sites.
This monitoring allowed assessing 52 species, representing 16 families. Anatidae are the most abundant
and represented by 11 species. Boughzoul´s reservoir is the high richness wetlands, followed by Chott El
Hodna and K’sob reservoir. However, Dayet El Kerfa is the preferred wetland for breeding species.
Winter migrant, resident , and migrant species are the dominated status with 43 %, 28 % and 17 %
respectively. While these statuses varied between sites.
Overall, the analyze phonological status of assessed species display the key role played by these wetlands
as wintering grounds, a stopover during migration journeys and breeding sites for several waterbirds
species. The presence of vulnerable species (Marmaronetta angustirostris), and three near threatened
other species (Aythya nyroca, Limosa limosa, Numenius arquata ) following the IUCN Red List confirms
the importance of the steppe region wetlands for waterbirds conservation.
Citation
M. BENSACI Ettayib, zoubiri asma, bilal gasmi, saheb menouar, , (2019), "Diversity and distribution pattern of waterbirds in wetlands of Algerian steppe region", [international] BioEco2019 , International Biodiversity & Ecology Sciences , Istanbul / Turkey
Studies on the benthic macroinvertebrate community from K’sob Wadi (M’Sila, Algeria)
Citation
M. BENSACI Ettayib, Soumai Djamai, Radhoune Alouani, , (2019), "Studies on the benthic macroinvertebrate community from K’sob Wadi (M’Sila, Algeria)", [international] International Biodiverstiy & Ecology Sciences Symposium Proceeding (Bioeco2019) , Turkey
Diversity of macro-invertebrates in Lake Tonga (northeast Algeria)
Citation
M. BENSACI Ettayib, Soumia DJAMAI, Francisco J OLIVA-PATERNA, , (2019), "Diversity of macro-invertebrates in Lake Tonga (northeast Algeria)", [international] BIHAREAN BIOLOGIST , University of Oradea Publishing House
Effects of vegetation and water seasonal variation on habitat use of herons (Aves, Ardeidae) in Tonga Lake (North-East Algeria)
Citation
M. BENSACI Ettayib, soumia.djamai@univ-msila.dz, , (2019), "Effects of vegetation and water seasonal variation on habitat use of herons (Aves, Ardeidae) in Tonga Lake (North-East Algeria)", [international] STUDIA UNIVERSITATIS BABEŞ-BOLYAI BIOLOGIA , STUDIA UNIVERSITATIS BABEŞ -BOLYAI , Romania