Plants of Desert Dunes

Danin, Avinoam

doi:10.1007/978-3-642-60975-6

Cited by 139 publications

(128 citation statements)

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“…Moreover, the relatively high value of hemicryptophytes of the plant species in the present study may be attributed to the ability of these species to resist drought, salinity, sand accumulation and grazing (Danin & Orshan, 1990;Danin, 1996).…”

Section: Discussionmentioning

confidence: 70%

Plant communities along the international coastal highway of Nile delta, Egypt

El‐Amier

El-Gawad

2017

jsa

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The construction of highways promotes several changes in the roadside habitat, vegetation, and plant invasion. The present study aimed to describe the plant communities-environment interactions of the international coastal highway from Port-Said to Abu-Qir, northern Nile delta coast of Egypt. A total of 146 species (83 annuals, 4 biennials, and 59 perennials), belonging to 116 genera and 33 families were recorded in 80 stands. The Mediterranean chorotype is the most represented. The cluster analysis of stands yielded four communities. The community I was dominated by Silybum mariannum, community II was dominated by Mesembryanthemum crystalinum, Community III is the largest one and was co-dominated by Hordeum murinum and Senecio glaucus and community IV was codominated by Cakile maritima and S. glaucus. Diversity indices showed more richness of communities II and more evenness of community IV. Electric conductivity, porosity, soil texture, Na + , Cl -and bicarbonate showed significant variation among communities. The soil of C. maritima and S. glaucus community was more saline (1.78 ms cm -1 ). The application of CCA showed that communities II and III were mainly correlated with salinity and organic matter. The present study revealed that roadside habitat of the international coastal highway dominated by different plant communities which correlated with the habitat structure, salinity, and anthropogenic activities. Furthermore, nine invasive species were recorded in this study which could be attributed to the increment of human activities after the construction of the highway.

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Section: Discussionmentioning

confidence: 70%

Plant communities along the international coastal highway of Nile delta, Egypt

El‐Amier

El-Gawad

2017

jsa

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“…This view is also consonant with the vegetation spectra in the northern part of the eastern desert of Egypt and other parts of the Middle East as Zahran and W illis (1992) and El -Bana and Al-Mathnani (2009). Based on the study of Mobayen (1996) (Danin, 1996;Galal and Fahmy, 2012). …”

Section: Life Formmentioning

confidence: 99%

Floristic diversity and vegetation structure of Al-Dissah area northwestern Saudi Arabia

Fakhry¹,

Al-Anazi²

2017

Egypt. J. Exp. Biol. (Bot.)

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“…The common 'phalanx' type growth strategy leads to densely aggregated clones with lower ramet density in the centre; a pattern referred to as fairy-ring or central die-back (Wikberg and Svensson 2003). The degeneration of the central area of the tussock has been interpreted as the results of the architectural development of the genet (Danin 1996), increase of interspecific competition inside the clones (Castellanos et al 1994) or, alternatively, as a consequence of changes in abiotic factors or resource levels (Falinska 1995;Wikberg and Mucina 2002). Plant-soil 'negative feedback' is a specific case of such plant-induced soil heterogeneity Bever 1994).…”

Section: Introductionmentioning

confidence: 99%

Negative Plant–Soil Feedback and Positive Species Interaction in a Herbaceous Plant Community

et al. 2005

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Increasing evidence shows that facilitative interaction and negative plant-soil feedback are driving factors of plant population dynamics and community processes. We studied the intensity and the relative impact of negative feedback on clonal growth and seed germination of Scirpus holoschoenus, a 'ring' forming sedge dominant in grazed grassland, and the consequences for species coexistence. The structure of aboveground tussocks was described. A Lithium tracer assessed belowground distribution of functional roots. Seed rain and seedling emergence were compared for different positions in relation to Scirpus tussocks. Soil bioassays were used to compare growth on soil taken from inside and outside Scirpus tussocks of four coexisting species (Mentha acquatica, Pulicaria dysenterica, Scirpus holoschoenus and Dittrichia viscosa). We also compared plant performance of dominant plant species inside and outside Scirpus tussocks in the field. The 'ring' shaped tussocks of S. holoschoenus were generated by centrifugal rhizome development. Roots were functional and abundant under the tillers and extending outside the tussocks. The large roots mats that were present in the inner tussock zone were almost all dead. Seedling emergence and growth both showed a strong negative feedback of Scirpus in the inner tussock zone. Scirpus clonal development strongly reduced grass biomass. In the degenerated tussock zone, Pulicaria and Mentha mortality was lower, and biomass of individual plants and seed production were higher. This positive indirect interaction could be related to species-specific affinity to soil conditions generated by Scirpus, and interspecific competitive release in the degenerated tussock zone. We conclude that Scirpus negative feedback affects its seedling emergence and growth contributing to the development of the degenerated inner tussock zone. Moreover, this enhances species coexistence through facilitative interaction because the colonization of the inner tussock zone is highly species-specific.

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Plants of Desert Dunes

Cited by 139 publications

References 0 publications

Plant communities along the international coastal highway of Nile delta, Egypt

Plant communities along the international coastal highway of Nile delta, Egypt

Floristic diversity and vegetation structure of Al-Dissah area northwestern Saudi Arabia

Negative Plant–Soil Feedback and Positive Species Interaction in a Herbaceous Plant Community

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