© ANS e.V. HAWK (10/2011)
Organic matter plays an important role in the maintenance of various soil quality aspects, e.g. the capacity to adsorb water and nutrients, the nutrient supply by mineralization, the stabilization of soil aggregates, etc. Due to global warming and EU restrictions on the application rates of animal manure there is a risk of an undesired decline in organic matter contents in agricultural soils. Although such risk seems to be relatively low in the Netherlands (Reijneveld et al., 2009), it is of importance to explore management strategies that may contribute to the maintenance of organic matter contents.

Using topography and vegetation attributes for estimation of saturated hydraulic conductivity in semiarid rangelands of Iran
© Aristotle University of Thessaloniki (6/2009)
Topographic (elevation, slope, and aspect) and vegetation attributes are routinely available data from digital elevation models (DEMs) and normalized difference vegetation index (NDVI). The objective of this study was to use topographic and vegetation attributes in addition to soil attributes to develop pedotransfer functions (PTFs) for estimating soil saturated hydraulic conductivity (Ks) in the semiarid rangelands of Iran.

Accumulation of cadmium and lead in the edible parts of the fodder shrub Atriplex halimus L. grown on Cd and Pb contaminated soils
© Aristotle University of Thessaloniki (6/2009)
Cadmium and lead accumulation in above ground edible parts of Atriplex halimus L. which is a widespread C4 xero-halophyte plant in the Mediterranean region, has been investigated, not only for the exploration of its possible use for phytoextraction purposes but mainly for the examination of the possible heath threat that can be caused since saltbushes have been extensively used as livestock fodder reserves in arid and semi-arid counties.

Land degradation due to diapirs in Iran, case study: Hableh-Rood Drainage Basin, East of Tehran
© Aristotle University of Thessaloniki (6/2009)
Different geological characteristics play role in land degradation in Iran which are: 1-The abundance of Neogene evaporitic marly formations around and in desertic depression. These units have had important role in the formation of present landforms, are saline, alkaline and erodible and degrade the quality of water resources as diffuse and widespread sources. 2- The presence of numerous diapirs, some of which are salt domes consisting of halite.

Arsenic contaminated environments: bioremediation perspective from molecular analysis on the bacterial arsenical metabolism
© Aristotle University of Thessaloniki (6/2009)
The metalloid arsenic (As) can be released from geological formations and it is widely used in anthropogenic activities (industry, agriculture, etc.) contaminating several aquatic and soil environments. The arsenate As(V) and arsenite As(III) can be subject to microbiologically oxidation, reduction and methylation reactions. Indeed, bacterial metabolisim of arsenical species in the environment is critical in the As cycle. In the present study, novel aerobic bacterial strains responsible for the oxidation and reduction of As were isolated in water samples supplemented with arsenite or arsenate.

Phytoextraction potential of Cynara cardunculus L. grown under single and binary cadmium and nickel treatment conditions
© Aristotle University of Thessaloniki (6/2009)
A greenhouse experiment was carried out using three groups of 12 pots each, filled with surface soil spiked by single and binary cadmium and nickel aqueous solutions. Measured bioavailable metal concentrations in soil ranged widely and were up to 246.7 mg kg-1 for Cd and 61.1 mg kg-1 for Ni.

A combined landfarming-phytoremediation system for remediation of petroleum hydrocarbons and metals from contaminated soils
© Aristotle University of Thessaloniki (6/2009)
Petroleum hydrocarbons are among the most common groups of persistent organic contaminants in the environment and are known to be toxic to many organisms. In this study, plant establishment and growth in two petroleum contaminated soils (S1 and S2), which were previously treated using landfarming technique, was evaluated. Investigation of phytoremediation technique for remediation of heavy metals in these petroleum contaminated soils was also part of the purpose.

Chemical fractionation and phytoextraction capacity of maize plant grown on chromated copper arsenate soil
© Aristotle University of Thessaloniki (6/2009)
A pot experiment was performed to study the single and sequential extraction of As, Cr and Cu in chromated copper arsenate (CCA) contaminated soil and the potential of maize (Zea mays) for the removal of the metals from the CCA contaminated soil.

The influence of soil – plant factors on the uptake of Cs by two plant species
© Aristotle University of Thessaloniki (6/2009)
To investigate Cs uptake by two different plant species grown on soils with contrasting physicochemical properties, a greenhouse pot experiment was conducted. Soil in each pot contaminated with 40 ug g-1 of Cs in the form of CsCl by spraying the solution in layers. After an equilibration period of two months, the soil of each pot appropriately sowed with seeds of Lolium perenne and Trifolium pratense plants.

Physiological responses of rosemary (Rosmarinus officinalis L.) to salinity and copper nutrition in a nutrient solution
© Aristotle University of Thessaloniki (6/2009)
Salinity and copper deficiency are two factors that inhibit plant growth. This study was conducted to investigate individual and combined effects of salinity and copper nutrition on growth, leaf relative water content and nutrient uptake of rosemary (Rosmarinus officinalis L.).

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