Vegetation and soil changes induced by Mesembryanthemum crystallinum L. in a Mediterranean desert ecosystem

El-Ğhareeb, R.

doi:10.1016/s0140-1963(18)30693-1

Cited by 24 publications

(13 citation statements)

References 16 publications

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“…Results indicated that the high representation of annual species in the sand dune habitat of El-Arish area may be due to several factors such as high percentage of fine ingredients, moisture content of the soil and the mild prevailing climate of this area .Also, the increase of maritime influence has great impact on the vegetation composition and nature of the characteristic species in north Sinai. Results of the present work agreed with those ofEl- Ghareeb (1991) and AbdEl-Fattah and Dahmash (2002).…”

supporting

confidence: 91%

Studies on the Ecology and Fertility Properties of Some Desert Soils in Egypt

Zaghloul

Shata²,

Attia

et al. 2012

Journal of Soil Sciences and Agricultural Engineering

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A pilot experiment was adopted in the period July 2011 to June 2012 by the Desert Research Center, in collaboration with Agricultural Research for Development Fund (ARDF), Ministry of Agriculture and Land Reclamation. The eco-physiological responses of the sand dune vegetation were studied in relation to climatic and microedaphic factors at three locations i.e. El Arish, North Sinai, (Garada village), Siwa Oasis (Khamisa) and East of Cairo (El Gabel Al Asfer). Besides, the soil fertility status. Statistical analysis indicated that significant differences were observed between the under studied three regions and each other in the content of organic matter (O.M.) and available macro-and micro-nutrients in the soil surface layer. The relationship between pH, EC, cations and anions, in soil saturated paste extract of the surface layer in the three studied regions, was showed through multiple correlations.

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supporting

confidence: 91%

Studies on the Ecology and Fertility Properties of Some Desert Soils in Egypt

Zaghloul

Shata²,

Attia

et al. 2012

Journal of Soil Sciences and Agricultural Engineering

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“…This might be the case for allelopathic plant species or for those that modify habitats (i.e. soil salinity: El‐Ghareeb 1991, or nitrogen availability: Holmes and Crowling 1997).…”

Section: Discussionmentioning

confidence: 99%

Comparison of the herbivore defense and competitive ability of ancestral and modern genotypes of an invasive plant, Lespedeza cuneata

Beaton¹,

Zandt²,

Esselman³

et al. 2011

Oikos

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The evolution of increased competitive ability (EICA) hypothesis provides a compelling explanation for the success of invasive species. It contends that because alien plants have escaped their coevolved natural enemies, selection pressures favor a diversion of resources from herbivore defense to traits that confer increased competitive ability. Here, we provide evidence for EICA in the noxious grassland invader Lespedeza cuneata, by comparing the ancestral genotype introduced to North America in 1930 with modern‐day invasive (North American) and native (Japanese) genotypes. We found that the invasive genotype was a better competitor than either the native or the ancestral genotype. Further, the invasive genotype exhibited greater induced resistance but lower constitutive resistance than the ancestral and native genotypes. Our results suggest that selection has played a pivotal role in shaping this invasive plant species into a more aggressive, but less constitutively defended competitor.

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“…Besides higher biomass, allelopathic compounds (novel weapons) were found to increase the competitive ability of invasive species by reducing the survival, germination, growth and reproductive output of resident species (Tilman 1988;Gentle & Duggin 1997;Ridenour & Callaway 2001;Lau et al 2008). Modifications of the soil microbial community (Niu et al 2007) and other mechanisms have also been put forward to explain the high impact of invasive plant species on community structure (El-Ghareeb 1991;D'Antonio & Vitousek 1992;Evans et al 2001). Thus, it often remains unclear whether an ecosystem impact is simply a consequence of higher biomass/densities of invasive plants with similar resource use traits as natives, due to functional traits of invasive plants that are not found among the native resident species, or a combination of the two (Ehrenfeld 2010).…”

Section: Introductionmentioning

confidence: 99%

Invasive plants differ from native plants in their impact on native communities

Sun

Junod

2017

J Vegetation Science

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Aims Although the impacts of alien plant invasions on native communities are well documented, the mechanisms that underlie these impacts are poorly resolved. Little is yet known as to why invasive alien plants have greater impacts than native species on their neighbouring species within a community. We investigated two potential mechanisms by which invasive plants may harm neighbouring species: resource competition and novel compounds of the invaders. Locations Field removal experiment in France and Switzerland, and common garden experiment at the University of Fribourg, Switzerland. Methods We first conducted a field removal experiment to compare the response of neighbouring communities to experimental biomass removal of two alien invasive vs two dominant native plant species in two sites of each target species (thus eight sites in total). In addition, we conducted a common garden pot experiment to compare the effect of eight triplets of closely related target species (24 species in total), each consisting of an alien invasive species in Europe, a dominant native and a random native species, on the growth of a grass community under the addition or not of activated carbon (AC). Results (1) Field removal experiment: in the control plots, we found that the biomass of native species explained a substantial amount of the variation in biomass of the neighbouring communities, but the invader's biomass did not. Moreover, the neighbouring community recovered from removal of the dominant native species, showing a significant increase in biomass, but did not after removal of the invaders. (2) Common garden pot experiment: we found a larger effect of invasive species than native species on the growth rate of the grass community, but this difference disappeared when AC was added. Conclusion Both experiments suggest that the impact of some invasive species is not driven by resource competition, but by other mechanisms, most likely by novel weapons or novel plant–soil interactions.

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Vegetation and soil changes induced by Mesembryanthemum crystallinum L. in a Mediterranean desert ecosystem

Cited by 24 publications

References 16 publications

Studies on the Ecology and Fertility Properties of Some Desert Soils in Egypt

Studies on the Ecology and Fertility Properties of Some Desert Soils in Egypt

Comparison of the herbivore defense and competitive ability of ancestral and modern genotypes of an invasive plant, Lespedeza cuneata

Invasive plants differ from native plants in their impact on native communities

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