Abstract This paper presents a quantitative account of vegetation–environmental factor relationships in arid rangelands. Vegetation cover was recorded using Braun-Blanquet combined abundance-cover scale in each quadrat. Within each quadrat, one profile was dug and soil samples being taken at 0-20cm and 20-100cm depths. Under study physical-chemical characteristics included texture, lime, orga...

Due to drought, low soil fertility, little rain fall, elevated levels of evapotranspiration, salinization the and a lack ground water, problem desertion agricultural areas has developed in KSA recent years (e.g. Tabuk region). In Saudi Arabia, land abandonment’s negative impact on composition perennial vegetation, quality, structure population was investigated. several abandoned fields research...

Lead (Pb) soil contamination remains a major ecological challenge. Zygophyllum fabago is candidate for the Pb phytostabilisation of mining tailings; nevertheless, cytogenotoxic effects low doses on this species are still unknown. Therefore, Z. seeds collected from non-mining (NM) and (M) areas were exposed to 0, 5 20 µM four weeks, after which seedling growth, redox status analyzed. The data re...

Nucleotide sequences of Rubisco Large Subunit (rbcL) and the internal transcribed spacers (ITS) of nrDNA were obtained for the five species of Larrea and one species each of Bulnesia (ITS only) and Plectrocarpa (rbcL only). Parsimony analyses were conducted, including sequences from seven genera of Zygophyllaceae reported by other authors-Kallstroemia, Zygophyllum, Augea, Fagonia, Pintoa, Guaia...

CONTEXT Balanites aegyptiaca (L.) Delile (Zygophyllaceae) is a tropical tree that has many folk uses in various countries. The bark extract is used for the control of the fresh water snails that act as intermediary host of Schistosoma. OBJECTIVE Study the molluscicidal activity and chemical constituents of seed oil and seed glycosides of B. aegyptiaca against Monacha cartusiana and determine ...