نتایج جستجو برای: steppes region
تعداد نتایج: 538411 فیلتر نتایج به سال:
Methodologies based on indicators occupy a prevalent place when assessing ecosystem functioning and monitoring desertification processes because they are affordable yet do not compromise accuracy. The landscape function analysis (LFA), developed in Australia by David Tongway (CSIRO), uses soil surface indicators to assess the condition of a given ecosystem by producing three numerical indices (...
Haplogroup R1a1-M198 is a major clade of Y chromosomal haplogroups which is distributed all across Eurasia. To this date, many efforts have been made to identify large SNP-based subgroups and migration patterns of this haplogroup. The origin and spread of R1a1 chromosomes in Eurasia has, however, remained unknown due to the lack of downstream SNPs within the R1a1 haplogroup. Since the discovery...
Archaeological and genetic evidence concerning the time and mode of wild horse (Equus ferus) domestication is still debated. High levels of genetic diversity in horse mtDNA have been detected when analyzing the control region; recurrent mutations, however, tend to blur the structure of the phylogenetic tree. Here, we brought the horse mtDNA phylogeny to the highest level of molecular resolution...
The Caspian Depression is situated on the flat eastern territory of North Caucasus. According to soil and climatic conditions, different ecosystems are neighboring in Depression: lowland moistened areas (up 30% territories), plat steppes (more than 50%), salt marshes 10%), semi-deserts 10%). majority territories used for domestic animal grazing, where more 3 million sheep, goats up 150 thousand...
The formation of the herbage plant communities depends on natural and climatic features area modes their economic use. In 2013-2021, comparison dynamics aboveground phytomass in steppe meadow Western Siberia at an absolute protective regime was carried out. state vegetation studied territory Novosibirsk region example two (the right-bank part Ob River forest-steppe) solonetzic northern Kulunda ...
This study presents the results of some options to restore pastures with low productivity in arid steppes Kostanay region northern Kazakhstan, describing effects associated grass-legume mixtures. The mixtures, contribution preservation and maintenance pasture forage crops, were discussed. Mixtures grasses legumes selected that are promising crops for regions.The plant density its condition dete...
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