Environmental factors determining regional biodiversity patterns of groundwater fauna in semi-arid aquifers of northwest Algeria

Mahi, Abdelhakim; Lorenzo, Tiziana Di; Haicha, Bathoul; Belaidi, Nouria; Taleb, A.

doi:10.1007/s10201-019-00579-x

Cited by 6 publications

(3 citation statements)

References 59 publications

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“…The taxonomic richness of VO_GWB was high and consistent with previous studies in other European and non-European alluvial aquifers [60,64,66,68,69], both at the local and the regional scales [15,70]. However, the number of species collected in VO_GWB is surprisingly high if considering the persisting N-compound contamination which occurred in 90% of the aquifer.…”

Section: Discussionsupporting

confidence: 88%

Potential of A Trait-Based Approach in the Characterization of An N-Contaminated Alluvial Aquifer

Lorenzo

Murolo

Fiasca

et al. 2019

Water

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Groundwater communities residing in contaminated aquifers have been investigated mainly through taxonomy-based approaches (i.e., analyzing taxonomic richness and abundances) while ecological traits have been rarely considered. The aim of this study was to assess whether a trait analysis adds value to the traditional taxonomy-based biomonitoring in N-contaminated aquifers. To this end, we monitored 40 bores in the Vomano alluvial aquifer (VO_GWB, Italy) for two years. The aquifer is a nitrate vulnerable zone according to the Water Framework Directive. The traditional taxonomy-based approach revealed an unexpectedly high biodiversity (38 taxa and 5725 individuals), dominated by crustaceans, comparable to that of other unpolluted alluvial aquifers worldwide. This result is in contrast with previous studies and calls into question the sensitivity of stygobiotic species to N-compounds. The trait analysis provided an added value to the study, unveiling signs of impairments of the groundwater community such as low juveniles-to-adults and males-to-females ratios and a crossover of biomasses and abundances curves suggestive of an intermediate alteration of the copepod assemblages.

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Section: Discussionsupporting

confidence: 88%

Potential of A Trait-Based Approach in the Characterization of An N-Contaminated Alluvial Aquifer

Lorenzo

Murolo

Fiasca

et al. 2019

Water

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“…As a result, it is necessary to study of vegetation structure. The characteristics of biodiversity is essential to understanding the relationships between biodiversity and ecological factors (Mahi et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Effects of Ecological Water Conveyance Project on the Structure, Species Diversity and Stability of Desert Riparian Forest in the Lower Reaches of Tarim River, Northwest China

Xiyi¹,

Ma²,

Ling³

et al. 2020

Preprint

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Background: The lower reaches of the Tarim River is an arid region of inland China. In this area, vegetation is sparse and the environment is fragile. Therefore, it is of great significance to study the structure and stability of the plant community and ecosystem in the lower reaches of the Tarim River. It is valuable to increase the understanding of ecological protection and restoration in arid areas. Methods: In this study, four sections, Yingsu, Karday, Alakan, and Yiganbjm, were selected as research sites, and 96 arbor and shrub quadrats and 288 herb quadrats were delimited in these sites. The ecological characteristics of all species in the quadrats were investigated. We selected the surveyed data from 2000, 2004, 2008, 2012, 2016, and 2019. Based on the data, we analyzed the variations in species composition. We also determined Shannon-Wiener indexes, Alatalo indexes, and ecological dominance to discuss the species diversity and uniformity of plant community. Plant community stability were also evaluated. Results: There were 17 species in 2000 and 31 species in 2019. The proportion of arbor and shrub species decreased, while the understory herbaceous species gradually increased; all of the species become balanced. The stability of the plant community gradually increased; however, it remained unstable. Conclusions: In general, water conveyance in an ecosystem plays a positive role in promoting the restoration of vegetation and ecological stability. This study provides a new method for the evaluation of ecological protection and restoration benefits in arid areas. Our findings can be a good reference for similar studies.

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“…We can mention the work of Gurney (1908); Monod (1924); Gauthier (1928); Nourrisson (1956); Delamare Deboutteville (1960); Pesce and Tete (1978) and Pesce et al (1981). In northwestern Algeria, hydrobiology programs are developing at a growing rate in the Tafna watershed (Belaidi et al 2004;Taleb et al 2008;Mahi 2007;Belaidi et al 2011Benhadji 2013and Mahi et al 2019. In recent years, underground fauna has been the subject of systematic studies to record the stygobian species of North-East Algeria (Merzoug et al 2010;Piscart et al 2013;Khaldoun et al 2016;Hadjab et al 2018 andAyati et al 2019), It is part of a global context of the stygobian fauna of Algeria and the stakes of the knowledge of the biodiversity of the underground ecosystems particularly the importance of invertebrates hosted by dug wells.…”

Section: Introductionmentioning

confidence: 99%

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

2019

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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.

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Environmental factors determining regional biodiversity patterns of groundwater fauna in semi-arid aquifers of northwest Algeria

Cited by 6 publications

References 59 publications

Potential of A Trait-Based Approach in the Characterization of An N-Contaminated Alluvial Aquifer

Potential of A Trait-Based Approach in the Characterization of An N-Contaminated Alluvial Aquifer

Effects of Ecological Water Conveyance Project on the Structure, Species Diversity and Stability of Desert Riparian Forest in the Lower Reaches of Tarim River, Northwest China

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

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