Heterogeneity of Soil and Vegetation in the Urban Habitats of New Industrial Cities in the Desert Landscape of Egypt

El-Ghani, Monier M. Abd; Bornkamm, Reinhard; El-Sawaf, Nadia; Turky, Hamdiya

doi:10.15835/nsb.7.1.9433

Cited by 2 publications

(5 citation statements)

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“…This study revealed that soil characteristics varied amongst the different habitats. This result confirms soil heterogeneity in newly urbanized areas (Abd El-Ghani et al., 2015). Variation of soil criteria among the habitats surveyed could be attributed to human manipulations.…”

Section: Discussionsupporting

confidence: 84%

“…The soils were analyzed for determination of soil texture, pH, electrical conductivity (EC), in addition to soil CaCO 3 and the organic carbon (OC). These soil criteria are important to be determined as they affect distribution and composition of flora of a given area (Hegazy et al., 2004; Gomaa, 2012a; Abd El-Ghani et al., 2015).…”

Section: Methodsmentioning

confidence: 99%

“…The effects of human activities on the desert vegetation have been reported in parts of the arid region of the world (Batanouny, 1983, 1999; Abd El-Ghani et al., 2017). Additionally, a few floristic studies in some anthropogenic habitats due to urbanization of desert have been investigated in Egypt (Abd El-Ghani et al., 2011, 2012, 2015). However, these studies may be insufficient work as new cities in the desert are being built, or under construction, with the creation of new socioeconomic activities, climate, soil conditions and water availability, leading to the appearance of certain plant cover with new composition and diversity which are still unknown.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, the terrestrial habitat of new urban ecosystems was mainly desert, but due to urbanization and greening purpose, clayey and silty soils were derived from old agricultural systems and introduced into this territory to be more suitable for plantations of gardens and parks, leading to significant changes in the physicochemical characteristics of the soil such as soil texture, pH, electrical conductivity (EC), CaCO 3 and organic matter status. These parameters were reported to be controlling composition, diversity and distribution of plant species in different habitats including the old crop farm lands, reclaimed lands, deserts in addition to the new urban areas (Abd El-Ghani et al., 2015; Gomaa et al., 2012; Hegazy et al., 2004). These changes in land use and water availability due to the human activities can favor native plant communities, as well as affect microclimate (Miltner et al., 2004; Paul and Meyer, 2001), and also facilitate the distribution of plants (Daehler, 2003; Song et al., 2017).…”

Section: Introductionmentioning

confidence: 99%

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Effect of human activities on floristic composition and diversity of desert and urban vegetation in a new urbanized desert ecosystem

Hassan

2019

Heliyon

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Human impact in newly urbanized deserts creates new environments that may favor the establishment/dominance of certain plant species. In this study, we showed how the human activities during desert urbanization do affect distribution, composition and diversity of plant species in a new urban ecosystem. In a field study during 2015–2016 and 2017–2018 growing seasons, we investigated these vegetation criteria in three new habitats created recently due to human manipulations in addition to the old habitat of such area (i.e. the desert). We also compared vegetation criteria comprising the floristic cover, composition and diversity between the desert locations inside and on the outskirts of the city. The detrended correspondence analysis (DCA) successfully separated the different habitats studied. Besides, the floristic composition and diversity were significantly varied amongst these habitats. The canonical correspondence analysis (CCA) revealed an apparent correlation between floristic composition and soil criteria across the study area. For the desert vegetation, the cover values of both Tamarix nilotica and Zygophyllum coccineum , in addition to the whole diversity indices, were significantly suppressed in the desert fragments inside the newly constructed city in comparison with their cover in the desert adjacent to it. Moreover, the cover of both species was significantly declined in 2018 compared with their cover in 2015. On converse, the covering areas of Phragmites australis and Bassia indica were increased after intensive constructions in 2018. These results suggest that the human activities and, consequently, urbanization may influence plant life in newly urbanized desert ecosystems, leading to dispersal of new species and destruction of plant cover in some parts of the desert. Efforts and conservation strategies should be devoted to save the desert species that are vulnerable to elimination due to expansion of urbanization.

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Section: Discussionsupporting

confidence: 84%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of human activities on floristic composition and diversity of desert and urban vegetation in a new urbanized desert ecosystem

Hassan

2019

Heliyon

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“…At the same time, railway stations and early-successional sites shared several apophytes. Abiotic factors strongly constrain urban plant species in harsh environments (e.g., in Egypt -Abd El-Ghani et al, 2015). Boulevards, squares and parks may overlap in abiotic conditions and share the same diagnostic species.…”

Section: Effects Of Habitat Type and City Size On Species Compositionmentioning

confidence: 99%

Urban plant diversity in Kazakhstan: Effects of habitat type, city size and macroclimate

Vakhlamova

Wagner

Cubino

et al. 2022

Applied Vegetation Science

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Questions Urbanisation has accelerated the spread of alien and apophytic species around the world including the drylands of continental inland Asia. However, few studies have examined the patterns and drivers of urban plant diversity in this region. We ask how habitat type, city size and macroclimate affect species richness and composition of alien, apophytic and non‐apophytic indigenous plants in cities of the steppe and forest‐steppe zones of Kazakhstan. Location Ten cities in central and northeastern Kazakhstan, Middle Asia. Methods Using a standardized sampling protocol, we recorded spontaneously occurring vascular plant species in 1‐ha plots in seven habitat types (central square, boulevard, residential area, park, early‐successional vacant site, mid‐successional vacant site and railway station) in five large (>100,000 inhabitants) and five small (<100,000 inhabitants) cities. We used linear mixed‐effect models to quantify the effects of habitat type, city size and macroclimate on species richness and the proportion of alien, apophytic and non‐apophytic indigenous plants. Results Plant species richness differed significantly among habitat types, with the lowest richness in central squares, and the highest in railway stations and residential areas. Apophytic species were most numerous in railway stations and alien species in residential areas. The richness of alien, apophytic and non‐apophytic indigenous species varied more among habitats than among cities. The proportion of apophytes increased linearly with annual precipitation. The largest differences in species composition were between disturbed sites in city centres (squares, boulevards and parks) and early‐successional, mid‐successional and railway station sites. Large and small cities also differed in species composition. Conclusions Plant diversity in cities of northern Kazakhstan depends mainly on habitat type and less on macroclimate. Overall, cities in inland continental Asia follow patterns of urban species diversity observed in other Asian and European cities.

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Heterogeneity of Soil and Vegetation in the Urban Habitats of New Industrial Cities in the Desert Landscape of Egypt

Cited by 2 publications

References 0 publications

Effect of human activities on floristic composition and diversity of desert and urban vegetation in a new urbanized desert ecosystem

Effect of human activities on floristic composition and diversity of desert and urban vegetation in a new urbanized desert ecosystem

Urban plant diversity in Kazakhstan: Effects of habitat type, city size and macroclimate

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