In arid and semi-arid areas, low soil fertility and water deficit considerably limit crop production. The use of sewage sludge as an organic amendment could contribute to the improvement of soil fertility and hence the agronomic production. The study aims to highlight the behaviour of durum wheat to the application of sewage sludge associated with water stress. The assessment focused on morphop...

The response of phytoplankton populations from surface ultra-oligotrophic waters of the Eastern Mediterranean Sea to Saharan dust additions was studied during a 10-day mesocosm experiment in May 2014. A set of triplicate mesocosms entitled “Single Addition” treatment (SA) was amended with Saharan dust once, while another triplicate set entitled “Repetitive Addition” treatment (RA) received the ...

With decreases in acid deposition, nitrogen : phosphorus (N:P) ratios in lakes are anticipated to decline, decreasing P limitation of phytoplankton and potentially changing current food web dynamics. This effect could be particularly pronounced in the Adirondack Mountains of New York State, a historic hotspot for effects of acid deposition. In this study, we evaluate spatial patterns of nutrien...

Variations in fish communities of shallow lakes in the Yangtze basins were investigated from September 2007 to September 2009. Six lakes were chosen for comparative study of species composition and diversity in relation to environmental variations. Lake heterogeneity was described with environmental physico-chemical variables, using principal component analysis. Sixteen families, composed of 75...

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Struvite is regarded as a promising phosphorus (P) fertilizer compared to commercial pristine mineral fertilizers. The aim of this study was determine the effect Phosgreen fertilizer, with struvite its source, on chlorophyll, potassium (K), and calcium (Ca) contents in lettuce grown peat superphosphate. carried out pot experiment different doses P fertilization. presents chlorophyll a, b, total...

This article investigates the changes in water quality Mastník bay, a part of Slapy Reservoir located at Vltava River, during 2015–2019 period. Due to occurrence drought conditions smaller streams rural areas Czechia have suffered from low quality, especially summer. For these reasons, stream contributes abnormal eutrophication bay. Since exchange between bay and rest reservoir has been limited...

1. Invasions of zebra and quagga mussels have had long-term, large-scale impacts on lake ecosystems in the USA as characterised by high abundance, broad-scale spread and effective adaption to new environmental conditions. Due to their high filtering capacity, decreases in chlorophyll a (Chl) and total phosphorus (TP) concentrations have been reported in many affected lakes. 2. In 25 US lakes, w...

In this study, to determine the trophic level of Küçükçekmece Lagoon Lake, water and sediment samplings were performed at five selected stations seasonally during a year between 2014-2015. The samples analyzed some environmental variables (water temperature, pH, conductivity, DO (dissolved oxygen), TDS (total dissolved solids), salinity. NO3-N, NO2-N, SO4-2, PO4-3, SiO2, chlorophyll-a, TP phosp...

Chickpea yield is decreasing day by due to drought stress, which could be an immense risk for future food security in developing countries. Management practices the most excellent approach diminish loss this abiotic factor. The current research work was designed explore tolerance reaction of chickpea genotypes against management practices, through morphological and biochemical parameters evalua...