نتایج جستجو برای: nutrient level

تعداد نتایج: 1142206  

2017
Veronica Ferreira Eric Chauvet

In woodland streams, the decomposition of allochthonous organic matter constitutes a fundamental ecosystem process, where aquatic hyphomycetes play a pivotal role. It is therefore greatly affected by water temperature and nutrient concentrations. The individual effects of these factors on the decomposition of litter have been studied previously. However, in the climate warming scenario predicte...

Jalal Javadi moghaddam Maryam Hosseini

In this research, the physico-chemical water quality parameters and the effect of climate changes onwater quality is evaluated. During the observation period (5 months) physico-chemical parameterssuch as water temperature, turbidity, saturated oxygen, dissolved oxygen, pH, chlorophyll-a, salinity,conductivity, and concentration of total nitrogen (nutrient level) as main pollutant factor have be...

2014

In woodland streams, the decomposition of allochthonous organic matter constitutes a fundamental ecosystem process, where aquatic hyphomycetes play a pivotal role. It is therefore greatly affected by water temperature and nutrient concentrations. The individual effects of these factors on the decomposition of litter have been studied previously. However, in the climate warming scenario predicte...

2010
R. AERTS

This paper reports on patterns in plant-mediated processes that determine the rate of nutrient cycling in temperate fens and bogs. We linked leaf-level nutrient dynamics with leaf-litter decomposition and explored how the observed patterns were reflected in nutrient cycling at the ecosystem level. Comparisons were made among growth forms (evergreen and deciduous shrubs and trees, graminoids and...

2014
Cristiana Callieri Roberto Bertoni Mario Contesini Filippo Bertoni Hans G. Dam

Global warming has been shown to strongly influence inland water systems, producing noticeable increases in water temperatures. Rising temperatures, especially when combined with widespread nutrient pollution, directly favour the growth of toxic cyanobacteria. Climate changes have also altered natural water level fluctuations increasing the probability of extreme events as dry periods followed ...

2013
Kalista Higini Peter Ulrich Sommer

Shrinking of body size has been proposed as one of the universal responses of organisms to global climate warming. Using phytoplankton as an experimental model system has supported the negative effect of warming on body-size, but it remains controversial whether the size reduction under increasing temperatures is a direct temperature effect or an indirect effect mediated over changes in size se...

2016
Robert MacDonell Mark W Hamrick Carlos M Isales

Nutrients (protein, carbohydrates and fats) have traditionally been thought of as fuels simply providing the energy for cellular metabolic activity. According to the classic view, if nutrients are available, then anabolic pathways are activated, and if nutrients are not available, catabolic pathways are activated. However, it is becoming increasingly clear that nutrient effects on bone cells (s...

Journal: :journal of fasting and health 0
masoomeh aghababazadeh 1. medical genetics research center, faculty of medicine, mashhad university of medical sciences, mashhad, iran 2. department of medical genetics, faculty of medicine, mashhad university of medical sciences, mashhad, iran mohammad amin kerachian 1. medical genetics research center, faculty of medicine, mashhad university of medical sciences, mashhad, iran 2. department of medical genetics, faculty of medicine, mashhad university of medical sciences, mashhad, iran

humans suffer transient or persistent starvation due to a lack of food intake, either because of fasting, voluntary dieting, or due to the scarcity of available food. at the cellular level it is possible to possess pathological starvation during ischemia and solid tumors. blood provides many nutrients to our cells, and researchers provide these nutrients to cells in culture in the form of enric...

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