Thrive inandesert environment reproductive capacity phenotypic plasticity enabling them to thrive nual plants have high[41]. The preponderance of Asteraceae, Poaceae, and Brassicaceae inside the present atmosphere [41]. The preponderance of Asteraceae, various wadis [427]. inside the desert study was in harmony with other preceding studies in Poaceae, and BrassicaAsteraceae and Poaceae families will be the with other previous studies in distinct wadis ceae in the present study was in harmonylargest families worldwide, especially in arid and semi-arid regions [48,49]. [427]. Asteraceae and Poaceae households would be the biggest families worldwide, specifically Four semi-arid regions have been identified by means of the Isethionic acid sodium salt Cancer classification of stands. Amongst these in arid andplant communities [48,49]. communities, Phragmites australis–Tamarix nilotica community was stands. Amongst these Four plant communities were identified via the classification from the most diverse and has the highest Simpson australis–Tamarix nilotica community was essentially the most diversewadi, communities, Phragmites diversity index. This neighborhood colonizes the head of the and where it receives the highest quantity of water. It really is worth mentioning right here with the wadi, has the highest Simpson diversity index. This community colonizes the head that the road construction that cut the wadi head of water. It is worth mentioning right here that the road exactly where it receives the highest amount led to trapping of water that percolates toward the wadi stream. This makes the head of your wadi mostly water that percolates toward we building that cut the wadi head led to trapping ofmoist (17.76) year-round, andthe look at that that is the reason for high wadi largely moist (17.76) year-round, and we wadi stream. This tends to make the head of theplant diversity in that location. Within this community, hydrophytes have been the purpose for higher plant diversity in that place. Tamarix nilotica, and contemplate that this isobserved such as Phragmites australis, Juncus rigidus, Within this community, Aeluropus lagopoides. This community colonizes the head of therigidus, exactly where it receives hydrophytes were observed including Phragmites australis, Juncus wadi, Tamarix nilotica, a high amount of water. Also, the larger soil water content material of this community enabled maidenhair fern; Adiantum capillus-veneris to inhabit the shaded locations of this habitat. Incredibly few research in the Riyadh area or other regions having comparable climatic conditions indicated the presence of A. capillus-veneris [502] and Ficus salicifolia [53]. The presence of those two uncommon wetland species in the study area necessitates an urgent biodiversity conservation action.Diversity 2021, 13,9 ofThe soil evaluation and also the CCA revealed that the Phragmites australis–Tamarix nilotica neighborhood was impacted by the content material of soil moisture, salinity, Cl, SO4 , Na, Ca, and Mg. Salinity is amongst the most important factors affecting plant communities’ assemblage [54,55]. Water is among the vital components that affect the plant neighborhood structure, dynamics, and composition in arid regions [17,56]. The water in the desert ecosystem involves precipitation, sand adsorbed water, surface runoff, air-water, and groundwater [57]. As a result of the greater price of evapotranspiration inside the desert ecosystem, salinity generally increases, hindering plant water uptake [58]. In this context, salinity is one of the most important elements affecting plant communities’ assemblage [54,55]. A study by Gong, et al. [55] reported that a.