The Prospects of the Impact of Desertification on Turkey, Lebanon, Syria and Iraq

Haktanır, Koray; Karaca, Ayten; Omar, Soufi

doi:10.1007/978-94-007-0973-7_9

Cited by 26 publications

(27 citation statements)

References 2 publications

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“…In Turkey, 500000 hectares of irrigation areas are affected by salinization (FAO 2015). Salt-affected soil in Turkey is primarily located in the Central South, Central North and Mediterranean regions (Haktanır et al 2012). The salt-affected soils contain excess salts, which affect plants by decreasing the osmotic potential of the soil solution (osmotic stress), interfering with normal nutrient uptake, inducing ionic toxicity, and associating nutrient imbalances (Dudley 1992.…”

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confidence: 99%

The Effects of Aloe vera L. Leaf Extract on Some Physiological and Cytogenetical Parameters in Allium cepa L. Seeds Germinated under Salt Stress

2016

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SummaryThe present study was performed to evaluate the role of Aloe vera L. leaf extract (AvLE) on some physiological and cytogenetical parameters of Allium cepa L. seeds exposed to salinity. The radicle length of the seeds germinated in the medium with AvLE alone increased as compared with ones of the control seeds germinated in distilled water medium, while their radicle number and fresh weight reduced according to the control. In addition, the germination percentage of the mentioned seeds statistically was the same as the control seeds. Furthermore, the seeds germinated in the media containing 0.1 mg/L AvLE alone showed a significant increase of mitotic index, although they exhibited a higher number of chromosomal aberrations and micronucleus (MN) formation as compared with the seeds germinated in control conditions. On the other hand, salt stress considerably inhibited the seed germination and seedling growth of A. cepa. Moreover, salinity markedly decreased the mitotic index in root tip meristems of the seeds and increased the number of chromosomal aberrations. The negative effect of salt on the seed germination, seedling growth, mitotic activity and MN formation was alleviated in dramatically varying degrees by AvLE application. In contrast, the detrimental effects of salt on the chromosomal aberrations greatly increased with this treatment. Consequently, we reported that the application of AvLE alone induced chromosomal aberrations and MN formation, which are an indicator of genotoxicity, and had cytotoxic activity in normal conditions. However, the frequency of MN is greatly reduced in root tip cells of the seeds germinated in the medium containing 0.1 mg/L AvLE +0.15 M NaCl.

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The Effects of Aloe vera L. Leaf Extract on Some Physiological and Cytogenetical Parameters in Allium cepa L. Seeds Germinated under Salt Stress

2016

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“…Such ancient associations probably explain why, during the present survey, we never found a sampling unit of grassland with livestock, but without sousliks. These benefits, however, cannot be confused with the threats represented by overgrazing which is one of the major factors affecting grassland degradation in the steppe environments (Haktanir et al 2004;Taşeli 2007).…”

Section: Discussionmentioning

confidence: 99%

Exploring co-extinction correlates: the effects of habitat, biogeography and anthropogenic factors on ground squirrels–dung beetles associations

Carpaneto

Mazziotta

Pittino³

et al. 2011

Biodivers Conserv

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Co-extinction is a recurring topic in conservation biology. Quantification of coextinction\ud has been generally restricted to parasite–host, predator–prey and herbivore–host\ud plant interactions. The loss of detritivorous insects upon the depletion of herbivore\ud mammals has been poorly explored. Here, we used rarefaction curves to predict co-decline\ud involving the decrease in scarab dung beetles diversity due to a reduction in the number of\ud dens of the Asia minor ground squirrel in the Turkish steppe biome. We also evaluated the\ud potential benefits provided by livestock in mitigating the decline of scarab beetle communities.\ud Rarefaction curves estimated that a 50% reduction in the number of sample units\ud where squirrel faecal pellets are the only available food resource accounts for a reduction\ud of 28% of all the scarab species, and of 24% of the squirrel-linked species. The current\ud decline of ground squirrels, mainly due to intensification of agriculture, may represent a\ud threat for biodiversity in steppic environments because it may affect the specialized\ud insects, and may produce a cascade effect also on their predators, i.e., saker falcon, buzzards,\ud eagles and mustelids. We also showed that the conservation of ground squirrels and\ud their affiliate scarab species may be ensured by a moderate livestock grazing, owing to the\ud higher ecological success of these rodents in the presence of large herbivores keeping low\ud the grass cover

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“…The world losses over six million hectares of its land per year by desertification and 70 m 2 is minimum area of arable land required to feed a person ( Haktanır, Karaca, & Omar, 2002).…”

Section: Introductionmentioning

confidence: 99%

Global Attention to Turkey Due to Desertification

Çeti̇n

Karaca

Haktanır

et al. 2006

Environ Monit Assess

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Desertification has recognized as an environmental problem by many international organizations such as UN, NATO and FAO. Desertification in Turkey is generally caused by incorrect land use, excessive grazing, forest fires, urbanization, industry, genetic erosion, soil erosion, salinization, and uncontrolled wild type plants picking. Due to anthropogenic destruction of forest, steppe flora gradually became dominant in Anatolia. In terms of biodiversity, Turkey has a significant importance in Europe and Middle East. Nine thousands plant species naturally grown in Turkey, one third of them are endemic. Also, endemic species of vertebrates, thrive in the lakes and marshy areas. The studies of modelling simulation of vegetation on the effects of Mediterranean climate during the Roman Classical period by using vegetation history showed that, in 2000 years BP, Mediterranean countries were more humid than today. Turkey is a special place on the global concern in terms of desertification because of biodiversity, agricultural potential, high population, social and economical structure, topographical factors and strategic regional location. Communication among scientists, decision makers and international non-profit organizations must be improved.

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The Prospects of the Impact of Desertification on Turkey, Lebanon, Syria and Iraq

Cited by 26 publications

References 2 publications

The Effects of <i>Aloe vera</i> L. Leaf Extract on Some Physiological and Cytogenetical Parameters in <i>Allium cepa</i> L. Seeds Germinated under Salt Stress

The Effects of <i>Aloe vera</i> L. Leaf Extract on Some Physiological and Cytogenetical Parameters in <i>Allium cepa</i> L. Seeds Germinated under Salt Stress

Exploring co-extinction correlates: the effects of habitat, biogeography and anthropogenic factors on ground squirrels–dung beetles associations

Global Attention to Turkey Due to Desertification

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