Many recent studies have focused on the relationship between biodiversity and ecosystem functioning, such as investigations into the productivity of experimental plant communities. One of the central issues affecting the functioning of ecosystems is the diversity of resident species richness and the composition of the plant community. However, one challenge to experimental studies is that resul...

Soil samples and physical size-density fractions isolated from them (silt particle size less than 1 µm, light fraction (LF) with a density of 2 g/cm 3 the residue) ordinary chernozem were studied in three contrasting variants experimental fields Kamennaya Steppe agrolandscape Voronezh region: mowed steppe, long-term permanent bare fallow corn – main differences which are tillage (cultivated not...

Arrested development of abomasal trichostrongylid nematodes was studied in 30 permanent grazing lambs on a large farm in the North-East of Algeria. The steppe climate has cold winters and hot and dry summers. The lambs were monitored monthly for gastrointestinal nematodes using nematode faecal egg counts, from February 2008 to February 2009. Every 2 months, two of the original 30 permanent lamb...

Purpose. To estimate the ecological plasticity of common millet yield under conditions Steppe, Forest-Steppe and Forest Ukraine. Methods. Mathematical statistical: determination stability by Eberhart & Russell method, correlation analysis. Results. As a result analysis cultivated areas during period 2011–2020, it was revealed that in Ukraine depend on world ones (r = 0.34). It determined hi...

The relationship between species richness (SR) and aboveground net primary productivity (ANPP) is still a central and debated issue in community ecology. Previous studies have often emphasized the relationship of alpha diversity (number of species identity) to the mean ANPP with respect to the SR-ANPP relationship while neglecting the contribution of beta diversity (dissimilarity in species com...

Purpose. To evaluate the quality indicators of spring barley seeds grown under different soil and climatic conditions. Methods. Laboratory, calculation statistical methods were used during research, analysis synthesis to draw conclusions. Results. As a result dependence indicators, namely: grain uniformity protein content, on zones growing conditions was revealed. Thus, ranged from 86.7% (high,...

The paper presents a part of the results obtained in a complex research project on Romanian Grey Steppe breed, owner of some remarkable qualities such as hardiness, longevity, adaptability, special resistance to ban weather and diseases and included in the genetic fund (G.D. no. 822/2008.) from Romania. Following the researches effectuated, we identified alleles of six loci, codifying the six t...