Soil-Vegetation Relationships of Saline Wetlands in North East of Algerian Sahara

Koull, Naïma; Chehma, Abdelmadjid

doi:10.1080/15324982.2014.898346

Cited by 17 publications

(8 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Saharan climate is characterized, in particular, by a weak and irregular precipitation, intense brightness, high potential evapotranspiration and high thermal amplitude. These climatic characteristics create drastic conditions that cannot be easily tolerated by the living ecosystems, resulting in a phytochemical adaptation and the appearance of new protective molecules against this extreme environment (Sitouh, 1983;Koull and Chehma, 2015).…”

Section: Introductionmentioning

confidence: 99%

Chemical profile and bioactive properties of the essential oil isolated from Ammodaucus leucotrichus fruits growing in Sahara and its evaluation as a cosmeceutical ingredient

Halla

Heleno

Costa

et al. 2018

Industrial Crops and Products

View full text Add to dashboard Cite

Ammodaucus leucotrichus is a medicinal plant commonly used in Algeria by the indigenous populations, especially due to its therapeutic effects. In this context, the aim of the present study was to chemically characterize the essential oil of A. leucotrichus fruits (EOALF) growing in Algerian Sahara, and to evaluate its bioactive properties (antimicrobial, antioxidant and anti-inflammatory). Considering the interest of the cosmetic industry for natural ingredients, and taking into account the obtained biological properties, the essential oil was also evaluated by incorporation in a base cosmetic (cream). The essential oil was extracted with a yield of 2.58 ± 0.17%, being perilla aldehyde identified as the main component, accounting for 85.6% of the total composition. Concerning the tested bioactivities, EOALF presented antioxidant potential, a strong anti-inflammatory activity, and was effective against the tested microbial strains (Staphylococcus aureus, Eschericia coli and Pseudomonas aeruginosa), being S. aureus the most sensitive bacteria. After incorporation in a base cosmetic, the developed formulation was able to preserve the EOALF bioactivities along 28 days under storage. The obtained results, with relevance for the strong-anti-inflammatory activity, pointed out the interest to exploit this essential oil as a cosmeceutical ingredient in the cosmetic industry.

show abstract

Section: Introductionmentioning

confidence: 99%

Chemical profile and bioactive properties of the essential oil isolated from Ammodaucus leucotrichus fruits growing in Sahara and its evaluation as a cosmeceutical ingredient

Halla

Heleno

Costa

et al. 2018

Industrial Crops and Products

View full text Add to dashboard Cite

show abstract

“…The main factors leading to the formation of these crusts are aridity, high evaporation and salty groundwater 26 . When studying salt marshes in south-eastern Spain, Álvarez Rogel noted that with increased salinity, the relative percentages of Ca 2+ and K + decreased, leading 26 to an imbalance in favour of the most toxic cations, such as Na + and Mg 2+ 1 . Similar results were also obtained in the present study.…”

Section: Discussionmentioning

confidence: 99%

Edaphic characterization and plant zonation in the Qaidam Basin, Tibetan Plateau

Xian-jie

Kong

et al. 2018

Sci Rep

View full text Add to dashboard Cite

This paper presents a study of edaphic characteristics and their relationship with plant distribution in the Qaidam Basin, Tibetan Plateau, and establishes a distribution model for plants in sandy gravel Gobi to dry salt lake areas. All of the communities in the study area were dominated by plants with strong saline-alkaline tolerance. In this area, salts appeared to migrate to the surface; the surface soil was striped, and the salt distribution varied from sandy gravel Gobi to dry salt lake areas. The salt composition mainly consisted of NaCl in the surface crust. In the subsurface layers, the salt composition was dominated by Ca2+, Cl− and SO42−. The type of vegetation at the study site can be divided into two categories: salt-tolerant vegetation and weakly salt-tolerant vegetation. The salt-tolerant vegetation is influenced by Na+, Cl−, and the salinity. The soil of these vegetation communities had a higher salt and Na+ concentration and a lower Ca2+ and K+ concentration. The weakly salt-tolerant vegetation is mainly affected by the Ca2+/Na+ and K+/Na+ ratios. Based on the above results, a vegetation distribution model for saline lakes on the inland plateau was established.

show abstract

“…Pedologically, the halophytes do not have strict requirements to colonize the edges of sebkhas where the saline character is perceptible (Aboura et al, 2006). Koull and Chehma (2015) indicated that both soil salinity and moisture affect the distribution of vegetation in saline wetlands. This agrees with other studies which showed that these two variables have a strong influence on plant distribution in saline habitats (e.g.…”

Section: Soil-vegetation Relationshipmentioning

confidence: 99%

“…The effect of abiotic factors can be understood in the borders of saline wetland when or where soil properties change gradually Hannon, 1967, 1970;Pennings and Callaway, 1992;Ungar, 1998). However, only a few studies have examined the effect of environmental factors on the distribution of vegetation in the northeastern Algeria, especially the Oued Righ region (Chenchouni, 2012;Youcef et al, 2012;Koull and Chehma, 2015). Moreover, floral biodiversity in this area remains poorly understood.…”

mentioning

confidence: 99%

Soil characteristics and plant distribution in saline wetlands of Oued Righ, northeastern Algeria

Koull

Chehma

2016

J. Arid Land

Self Cite

View full text Add to dashboard Cite

Saline wetlands are rare ecosystems in Saharan areas, which are important for conservation of many endemic and rare plant species. In this study, we investigated five saline wetland sites of the Oued Righ region, located in the northeastern Algeria, to determine the environmental factors controlling the composition and distribution of plant communities. We established a total of 20 transects to measure the vegetation parameters (density and cover) and soil characteristics (electrical conductivity, moisture, pH, CaSO4, CaCO3, organic matter, Na + , K + , Mg 2+ , Ca 2+ , SO4 2-, Cl-, NO3and HCO3-). A total of 17 plant species belonging to seven families were identified. The natural vegetation was composed of halophytic and hydro-halophytic plant communities, presented specially by the species of Amaranthaceae family. Soils in the studied wetlands were moist, gypsiferous, alkaline, salty to very salty with dominance of chloride and calcium. Results of the Canonical Correspondence Analysis (CCA) showed that community structure and species distribution patterns of vegetation were mainly dependent on soil characteristics, mainly being soil salinity (CaSO4, K + , Ca 2+ and Cl-) and moisture. The distribution of plant species was found to follow a specific zonal pattern. Halocnemum strobilaceum was observed to grow in highly salt-affected soils, thus being the more salt-tolerant species. Phragmites communis plants were widely distributed in the study area with a high density at the edges of accumulated water body. Juncus maritimus, Tamarix gallica and Salicornia fructicosa grew in soils that are partially or completely flooded in winter. Suaeda fructicosa, Traganum nudatum, Arthrocnemum glaucum, Aeluropus littoralis, Cressa cretica and Cynodon dactylon were distributed in salty and moist soils away from the open water body. Plants of Zygophyllum album, Limonastrirum guyonianum, Cornulaca monacantha, Cistanche tinctoria, Mollugo nudicaulis and Sonchus maritimus were found in soils with less salty and moisture. They constituted the outermost belt of vegetation in the studied wetlands. This study will provide a reference on introducing the salt-tolerant plant species as a fodder resource in saline habitats and regenerating the degraded saline wetlands.

show abstract

Soil-Vegetation Relationships of Saline Wetlands in North East of Algerian Sahara

Cited by 17 publications

References 13 publications

Chemical profile and bioactive properties of the essential oil isolated from Ammodaucus leucotrichus fruits growing in Sahara and its evaluation as a cosmeceutical ingredient

Chemical profile and bioactive properties of the essential oil isolated from Ammodaucus leucotrichus fruits growing in Sahara and its evaluation as a cosmeceutical ingredient

Edaphic characterization and plant zonation in the Qaidam Basin, Tibetan Plateau

Soil characteristics and plant distribution in saline wetlands of Oued Righ, northeastern Algeria

Contact Info

Product

Resources

About