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  Subjects -> BIOLOGY (Total: 2982 journals)
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BIOLOGY (1420 journals)                  1 2 3 4 5 6 7 8 | Last

Showing 1 - 200 of 1720 Journals sorted alphabetically
AAPS Journal     Hybrid Journal   (Followers: 18)
Achievements in the Life Sciences     Open Access   (Followers: 4)
ACS Synthetic Biology     Full-text available via subscription   (Followers: 20)
Acta Biologica Colombiana     Open Access   (Followers: 6)
Acta Biologica Hungarica     Full-text available via subscription   (Followers: 4)
Acta Biologica Sibirica     Open Access  
Acta Biomaterialia     Hybrid Journal   (Followers: 25)
Acta Biotheoretica     Hybrid Journal   (Followers: 5)
Acta Chiropterologica     Full-text available via subscription   (Followers: 6)
acta ethologica     Hybrid Journal   (Followers: 4)
Acta Limnologica Brasiliensia     Open Access   (Followers: 3)
Acta Médica Costarricense     Open Access   (Followers: 2)
Acta Musei Silesiae, Scientiae Naturales : The Journal of Silesian Museum in Opava     Open Access  
Acta Parasitologica     Hybrid Journal   (Followers: 9)
Acta Scientiarum. Biological Sciences     Open Access   (Followers: 2)
Acta Scientifica Naturalis     Open Access   (Followers: 2)
Actualidades Biológicas     Open Access   (Followers: 1)
Advanced Health Care Technologies     Open Access   (Followers: 4)
Advances in Antiviral Drug Design     Full-text available via subscription   (Followers: 3)
Advances in Bioinformatics     Open Access   (Followers: 18)
Advances in Biological Regulation     Hybrid Journal   (Followers: 4)
Advances in Biology     Open Access   (Followers: 8)
Advances in Biosensors and Bioelectronics     Open Access   (Followers: 6)
Advances in Cell Biology     Open Access   (Followers: 23)
Advances in Cellular and Molecular Biology of Membranes and Organelles     Full-text available via subscription   (Followers: 12)
Advances in Developmental Biology     Full-text available via subscription   (Followers: 11)
Advances in DNA Sequence-Specific Agents     Full-text available via subscription   (Followers: 5)
Advances in Ecological Research     Full-text available via subscription   (Followers: 39)
Advances in Ecology     Open Access   (Followers: 13)
Advances in Environmental Sciences - International Journal of the Bioflux Society     Open Access   (Followers: 20)
Advances in Enzyme Research     Open Access   (Followers: 10)
Advances in Experimental Biology     Full-text available via subscription   (Followers: 7)
Advances in Genome Biology     Full-text available via subscription   (Followers: 12)
Advances in High Energy Physics     Open Access   (Followers: 20)
Advances in Human Biology     Open Access  
Advances in Life Science and Technology     Open Access   (Followers: 14)
Advances in Life Sciences     Open Access   (Followers: 4)
Advances in Marine Biology     Full-text available via subscription   (Followers: 16)
Advances in Molecular and Cell Biology     Full-text available via subscription   (Followers: 21)
Advances in Planar Lipid Bilayers and Liposomes     Full-text available via subscription   (Followers: 3)
Advances in Regenerative Biology     Open Access   (Followers: 1)
Advances in Structural Biology     Full-text available via subscription   (Followers: 7)
Advances in Virus Research     Full-text available via subscription   (Followers: 5)
African Journal of Range & Forage Science     Hybrid Journal   (Followers: 6)
AFRREV STECH : An International Journal of Science and Technology     Open Access   (Followers: 1)
Ageing Research Reviews     Hybrid Journal   (Followers: 7)
Aging Cell     Open Access   (Followers: 9)
Agrokémia és Talajtan     Full-text available via subscription   (Followers: 2)
Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat     Open Access  
AJP Cell Physiology     Full-text available via subscription   (Followers: 13)
AJP Endocrinology and Metabolism     Full-text available via subscription   (Followers: 22)
AJP Lung Cellular and Molecular Physiology     Full-text available via subscription   (Followers: 3)
Al-Kauniyah : Jurnal Biologi     Open Access  
Alasbimn Journal     Open Access   (Followers: 1)
AMB Express     Open Access   (Followers: 1)
Ambix     Hybrid Journal   (Followers: 3)
American Biology Teacher     Full-text available via subscription   (Followers: 12)
American Fern Journal     Full-text available via subscription   (Followers: 1)
American Journal of Agricultural and Biological Sciences     Open Access   (Followers: 10)
American Journal of Bioethics     Hybrid Journal   (Followers: 10)
American Journal of Biostatistics     Open Access   (Followers: 9)
American Journal of Human Biology     Hybrid Journal   (Followers: 12)
American Journal of Medical and Biological Research     Open Access   (Followers: 5)
American Journal of Plant Sciences     Open Access   (Followers: 19)
American Journal of Primatology     Hybrid Journal   (Followers: 14)
American Malacological Bulletin     Full-text available via subscription   (Followers: 3)
American Naturalist     Full-text available via subscription   (Followers: 63)
Amphibia-Reptilia     Hybrid Journal   (Followers: 6)
Anaerobe     Hybrid Journal   (Followers: 4)
Analytical Methods     Full-text available via subscription   (Followers: 7)
Anatomical Science International     Hybrid Journal   (Followers: 2)
Animal Cells and Systems     Hybrid Journal   (Followers: 4)
Annales de Limnologie - International Journal of Limnology     Hybrid Journal   (Followers: 1)
Annales françaises d'Oto-rhino-laryngologie et de Pathologie Cervico-faciale     Full-text available via subscription   (Followers: 3)
Annales Henri Poincaré     Hybrid Journal   (Followers: 3)
Annales UMCS, Biologia     Open Access   (Followers: 1)
Annals of Applied Biology     Hybrid Journal   (Followers: 8)
Annals of Biomedical Engineering     Hybrid Journal   (Followers: 18)
Annals of Human Biology     Hybrid Journal   (Followers: 4)
Annual Review of Biomedical Engineering     Full-text available via subscription   (Followers: 17)
Annual Review of Biophysics     Full-text available via subscription   (Followers: 25)
Annual Review of Cell and Developmental Biology     Full-text available via subscription   (Followers: 37)
Annual Review of Food Science and Technology     Full-text available via subscription   (Followers: 14)
Annual Review of Genomics and Human Genetics     Full-text available via subscription   (Followers: 18)
Annual Review of Phytopathology     Full-text available via subscription   (Followers: 10)
Anthropological Review     Open Access   (Followers: 23)
Anti-Infective Agents     Hybrid Journal   (Followers: 3)
Antibiotics     Open Access   (Followers: 8)
Antioxidants     Open Access   (Followers: 4)
Antioxidants & Redox Signaling     Hybrid Journal   (Followers: 8)
Antonie van Leeuwenhoek     Hybrid Journal   (Followers: 5)
Anzeiger für Schädlingskunde     Hybrid Journal   (Followers: 1)
Apidologie     Hybrid Journal   (Followers: 4)
Apmis     Hybrid Journal   (Followers: 1)
APOPTOSIS     Hybrid Journal   (Followers: 8)
Applied Bionics and Biomechanics     Open Access   (Followers: 8)
Applied Vegetation Science     Full-text available via subscription   (Followers: 9)
Aquaculture Environment Interactions     Open Access   (Followers: 2)
Aquaculture International     Hybrid Journal   (Followers: 22)
Aquaculture Reports     Open Access   (Followers: 3)
Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society     Open Access   (Followers: 6)
Aquatic Biology     Open Access   (Followers: 4)
Aquatic Ecology     Hybrid Journal   (Followers: 30)
Aquatic Ecosystem Health & Management     Hybrid Journal   (Followers: 13)
Aquatic Science and Technology     Open Access   (Followers: 3)
Aquatic Toxicology     Hybrid Journal   (Followers: 19)
Archaea     Open Access   (Followers: 3)
Archiv für Molluskenkunde: International Journal of Malacology     Full-text available via subscription   (Followers: 3)
Archives of Biomedical Sciences     Open Access   (Followers: 7)
Archives of Microbiology     Hybrid Journal   (Followers: 8)
Archives of Natural History     Hybrid Journal   (Followers: 7)
Archives of Oral Biology     Hybrid Journal   (Followers: 2)
Archives of Virology     Hybrid Journal   (Followers: 5)
Archivum Immunologiae et Therapiae Experimentalis     Hybrid Journal   (Followers: 2)
Arid Ecosystems     Hybrid Journal   (Followers: 3)
Arquivos do Instituto Biológico     Open Access   (Followers: 1)
Arquivos do Museu Dinâmico Interdisciplinar     Open Access  
Arthropod Structure & Development     Hybrid Journal   (Followers: 2)
Arthropods     Open Access   (Followers: 1)
Artificial DNA: PNA & XNA     Hybrid Journal   (Followers: 2)
Artificial Photosynthesis     Open Access   (Followers: 1)
Asian Bioethics Review     Full-text available via subscription   (Followers: 1)
Asian Journal of Biodiversity     Open Access   (Followers: 5)
Asian Journal of Biological Sciences     Open Access   (Followers: 3)
Asian Journal of Cell Biology     Open Access   (Followers: 5)
Asian Journal of Developmental Biology     Open Access   (Followers: 2)
Asian Journal of Medical and Biological Research     Open Access   (Followers: 2)
Asian Journal of Nematology     Open Access   (Followers: 3)
Asian Journal of Poultry Science     Open Access   (Followers: 4)
Australian Life Scientist     Full-text available via subscription   (Followers: 2)
Australian Mammalogy     Hybrid Journal   (Followers: 5)
Autophagy     Hybrid Journal   (Followers: 2)
Avian Biology Research     Full-text available via subscription   (Followers: 3)
Avian Conservation and Ecology     Open Access   (Followers: 7)
Bacteriology Journal     Open Access   (Followers: 2)
Bacteriophage     Full-text available via subscription   (Followers: 3)
Bangladesh Journal of Bioethics     Open Access  
Bangladesh Journal of Plant Taxonomy     Open Access  
Bangladesh Journal of Scientific Research     Open Access   (Followers: 1)
Berita Biologi     Open Access   (Followers: 1)
Between the Species     Open Access   (Followers: 1)
Bio Tribune Magazine     Hybrid Journal  
BIO Web of Conferences     Open Access  
BIO-Complexity     Open Access  
Bio-Grafía. Escritos sobre la Biología y su enseñanza     Open Access  
Bioanalytical Reviews     Hybrid Journal   (Followers: 2)
Biocatalysis and Biotransformation     Hybrid Journal   (Followers: 6)
Biochemistry and Cell Biology     Full-text available via subscription   (Followers: 14)
Biochimie     Hybrid Journal   (Followers: 7)
BioControl     Hybrid Journal   (Followers: 5)
Biocontrol Science and Technology     Hybrid Journal   (Followers: 5)
Biodemography and Social Biology     Hybrid Journal   (Followers: 1)
Biodiversidad Colombia     Open Access  
Biodiversity : Research and Conservation     Open Access   (Followers: 26)
Biodiversity and Natural History     Open Access   (Followers: 5)
Biodiversity Data Journal     Open Access   (Followers: 3)
Biodiversity Informatics     Open Access  
Bioedukasi : Jurnal Pendidikan Biologi FKIP UM Metro     Open Access  
Bioeksperimen : Jurnal Penelitian Biologi     Open Access  
Bioelectrochemistry     Hybrid Journal   (Followers: 2)
Bioelectromagnetics     Hybrid Journal   (Followers: 1)
Bioenergy Research     Hybrid Journal   (Followers: 2)
Bioengineering and Bioscience     Open Access   (Followers: 1)
BioEssays     Hybrid Journal   (Followers: 10)
Bioethics     Hybrid Journal   (Followers: 14)
BioéthiqueOnline     Open Access  
Biofabrication     Hybrid Journal   (Followers: 3)
Biogeosciences (BG)     Open Access   (Followers: 9)
Biogeosciences Discussions (BGD)     Open Access   (Followers: 1)
Bioinformatics     Hybrid Journal   (Followers: 232)
Bioinformatics and Biology Insights     Open Access   (Followers: 14)
Bioinspiration & Biomimetics     Hybrid Journal   (Followers: 6)
Biointerphases     Open Access   (Followers: 1)
Biojournal of Science and Technology     Open Access  
Biologia     Hybrid Journal  
Biologia on-line : Revista de divulgació de la Facultat de Biologia     Open Access  
Biological Bulletin     Partially Free   (Followers: 4)
Biological Control     Hybrid Journal   (Followers: 5)
Biological Invasions     Hybrid Journal   (Followers: 16)
Biological Journal of the Linnean Society     Hybrid Journal   (Followers: 14)
Biological Letters     Open Access   (Followers: 4)
Biological Procedures Online     Open Access  
Biological Psychiatry     Hybrid Journal   (Followers: 41)
Biological Psychology     Hybrid Journal   (Followers: 6)
Biological Research     Open Access  
Biological Rhythm Research     Hybrid Journal   (Followers: 2)
Biological Theory     Hybrid Journal   (Followers: 1)
Biological Trace Element Research     Hybrid Journal  
Biologicals     Full-text available via subscription   (Followers: 9)
Biologics: Targets & Therapy     Open Access   (Followers: 1)
Biologie Aujourd'hui     Full-text available via subscription  
Biologie in Unserer Zeit (Biuz)     Hybrid Journal   (Followers: 44)
Biologija     Open Access  
Biology     Open Access   (Followers: 5)
Biology and Philosophy     Hybrid Journal   (Followers: 16)
Biology Bulletin     Hybrid Journal   (Followers: 1)
Biology Bulletin Reviews     Hybrid Journal  
Biology Direct     Open Access   (Followers: 7)
Biology Letters     Full-text available via subscription   (Followers: 35)
Biology Methods and Protocols     Hybrid Journal  

        1 2 3 4 5 6 7 8 | Last

Journal Cover Arid Ecosystems
  [3 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 2079-0961 - ISSN (Online) 2079-0988
   Published by Springer-Verlag Homepage  [2329 journals]
  • Regional distribution patterns of soils in delta ecosystems and their
           potential use on different continents
    • Authors: Z. G. Zalibekov; A. B. Biarslanov; S. A. Mamaev; D. B. Asgerova; U. M. Galimova; M. S. Sultankhamedov
      Pages: 73 - 79
      Abstract: New approaches using mathematical methods have been developed for estimation of the effect of undrained plain heights in delta ecosystems on soil diversity. This makes it possible to consider the effect of positive elements in the delta plain located below the zero marks that favoring the formation of local drainage. Models have been developed from the height gradients of the Terek–Kuma Lowland by the least squares method. The proposed method has revealed the soil diversity and spatial parameters characteristic of alluvialdelta coastal plains common to different continents.
      PubDate: 2017-04-01
      DOI: 10.1134/s2079096117020111
      Issue No: Vol. 7, No. 2 (2017)
       
  • Gypsification processes and porosity changes in soils from southern Iran
           (Jooyom region-Fars province)
    • Authors: Sahar Fazeli; Ali Abtahi; Rosa M. Poch; Hakime Abbaslou
      Pages: 80 - 91
      Abstract: Population growth are leading to intensive and extensive land use even in gypsiferous and gypseous soils which resulted in a greater demand for information of these common soils. The soils of Jooyom region located in southern Iran were studied in order to estimate the rates of soil formation processes, such as gypsum accumulation, and how they affect soil porosity. Soils have gypsum contents ranging from 0.02 to 42.1%, which increases with depth. In the field, gypsum accumulations are described as powdery nodules and vermiform gypsum. Different kinds of micromorphological pedofeatures related to gypsum are observed, which include infillings and coatings of gypsum crystals, typic nodules and crystal twins. Nodules of micrite pseudomorphs after lenticular gypsum are found, where calcite has substituted the original gypsum, which are indicators of a more arid climate in the past, followed by a more humid one. The extent, morphology and size of gypsum crystals depend on the pedogenic processes. In regard to micromorphological classification of gypsiferous soil materials, they are classified in two groups of Eogypsic and Gypsic. Soil porosity changes related to gypsum accumulation were studied and quantified by image analysis. The understanding the retention and movement of water and air in the soil; therefore, these results have a practical importance for land use and management of gypsiferous soils.
      PubDate: 2017-04-01
      DOI: 10.1134/s2079096117020093
      Issue No: Vol. 7, No. 2 (2017)
       
  • Utilization of cosmic factors by pasture phytocenosis on various types of
           soils in the northwestern Caspian Sea region
    • Authors: G. N. Hasanov; T. A. Asvarova; M. K. Gadzhiev; Z. N. Ahmedova; A. S. Abdulaeva; R. R. Bashirov
      Pages: 92 - 96
      Abstract: The research data on the potential productivity of light-chestnut and meadow-chestnut soils of semidesert, the species composition of pasture phytocenosis under reservation conditions, and utilization coefficient of photosynthetically active radiation were analyzed with respect to the annual and seasonal water and temperature conditions.
      PubDate: 2017-04-01
      DOI: 10.1134/s2079096117020044
      Issue No: Vol. 7, No. 2 (2017)
       
  • Geoinformation system of assessment of the susceptibility of arid area
           landscapes in the Terek-Kuma Lowland to pollution
    • Authors: I. M. Gazaliev; I. A. Idrisov; A. M. Achmedov
      Pages: 97 - 102
      Abstract: The Terek-Kuma Lowland is characterized by a wide range of anthropogenic impacts. At the same time, with respect to other arid regions of Dagestan, the anthropogenic impact on the geological environment (hydrocarbon and artesian water extraction) is of great importance. The extensive development of sandy soils and the development of animal husbandry also lead to a number of significant geoenvironmental problems. Assessment of the current geoenvironmental state of the area shows that the degree of degradation of the landscapes is small, while the possibility of their self-regeneration is at a high level.
      PubDate: 2017-04-01
      DOI: 10.1134/s2079096117020056
      Issue No: Vol. 7, No. 2 (2017)
       
  • Structures of small mammal populations and communities in Steppe
           ecosystems of the Caspian northwest coastal area and Eastern Mongolia
    • Authors: K. Z. Omarov
      Pages: 103 - 107
      Abstract: The responses of populations and communities of small mammals have been studied under different grazing regimens. It is shown that overgrazing and grazing restriction can have a considerable impact on the population status, demographic structure, and alspecies composition of small mammals in the Caspian northwest coast area (Nogai Steppe) and the steppes of Eastern Mongolia
      PubDate: 2017-04-01
      DOI: 10.1134/s2079096117020081
      Issue No: Vol. 7, No. 2 (2017)
       
  • On the conditions of maintaining the ecological balance on gas and oil
           fields
    • Authors: M.-P. B. Aytekov
      Pages: 108 - 111
      Abstract: The concentrations of radionuclides responsible for radioactive contamination have been determined in an oilfield area based on the example of the Duzlak oilfield, where a gamma survey was previously conducted. The collector and drainage channel bordering the area is shown to lack effectiveness. An evaluation was given for travertines as a construction material. Measures for isolating the salts of radioactive and other elements that accumulated in the considered area are proposed.
      PubDate: 2017-04-01
      DOI: 10.1134/s2079096117020020
      Issue No: Vol. 7, No. 2 (2017)
       
  • Effect of the elemental composition of soils on the reproductive organs of
           permanent crops in relation to the altitudinal gradient
    • Authors: O. K. Vlasova; G. G. Magomedov
      Pages: 112 - 115
      Abstract: The qualitative composition and quantitative content of mineral substances in the soils and fruits of Prunus armeniaca L. and Malus domestica Borkh. cultivated in the environmental conditions of the plains and foothills of central Daghestan has been estimated. The adaptation of apricot and apple trees to the natural factors of the lower foothills results in higher sugar concentrations in their fruits in comparison with trees growing on plains; the apricot and apple trees growing on lower foothills concentrate more Ca and P, while the contents of K, Na, Mg, and Cu in their fruits are reduced. Plants of the same species growing on soils with different contents of mineral substances differ by the total content of macro- and microelements in their fruits but accumulate roughly equivalent levels of P, Na, Ca, Cu, Ni, and Pb.
      PubDate: 2017-04-01
      DOI: 10.1134/s207909611702010x
      Issue No: Vol. 7, No. 2 (2017)
       
  • Extremophilic microbial communities of saline soils and their diversity in
           the regions of the Caspian Depression
    • Authors: E. A. Khalilova; S. Ts. Kotenko; E. A. Islammagomedova; R. Z. Gasanov; A. A. Abakarova; D. A. Aliverdieva
      Pages: 116 - 120
      Abstract: The microbial communities of alkali-saline soils and halophytes of the Caspian Depression regions have been studied for the first time. Over 40 species and forms of bacteria have been revealed. Along with a wide variety of soil microorganisms, bacteria of the genera Bacillus and Salimicrobium are the main components of the extremophilic microbial communities; their detection is one of the indices of the taxonomical structure determination, which is closely related to the ecosystem type.
      PubDate: 2017-04-01
      DOI: 10.1134/s2079096117020068
      Issue No: Vol. 7, No. 2 (2017)
       
  • Comparative analysis of the morphometric signsvariability and vitality of
           two Jurinea ciscaucasica (Sosn.) Iljin coenopopulations
    • Authors: N. A. Magomedova; A. I. Adjieva
      Pages: 121 - 124
      Abstract: A comparative study of the morphometric traits and vitality of Sarykum and coastal Jurinea ciscaucasica coenopopulations, revealing higher results than for those from the seaside. The quality of life of the Sarykum coenopopulation is generally high, while the other is low and its depressive character is an alarming symptom that requires further monitoring studies.
      PubDate: 2017-04-01
      DOI: 10.1134/s207909611702007x
      Issue No: Vol. 7, No. 2 (2017)
       
  • The dynamics of mobile iodine forms in components of arid ecosystems of
           the Western Caspians
    • Authors: N. T. Gadzhimusieva; A. A. Saidieva
      Pages: 125 - 129
      Abstract: Multiyear studies on the dynamics of iodine accumulation and migration processes in the soil–plant system are summarized. The characteristics of seasonal rhythms of iodine consumption by natural vegetation and agrophytocenosis are given, and the role of soil humus in the accumulation of mobile forms of iodine are defined. Indicators of the seasonal cycle and the dynamics of the outflow of mobile element forms from soil to plant vegetative organs are described. The reserves of total iodine forms indicate potential enrichment with mobile forms and the elimination of iodine deficiency of the soils of the Western Caspian Sea region.
      PubDate: 2017-04-01
      DOI: 10.1134/s2079096117020032
      Issue No: Vol. 7, No. 2 (2017)
       
  • Biological activity of anthropogenic mountain soils of medieval
           agricultural terraces of mountainous Dagestan
    • Authors: N. N. Kashirskaya; E. V. Chernisheva; A. K. Khodzaeva; A. V. Borisov
      Pages: 1 - 10
      Abstract: The study of agricultural terraces in mountainous Dagestan that date to the Middle Ages revealed the polygenetic character of anthropogenic soils, which reflects the main stages of their evolution. In light of their long-term burial, the soil layers of the preanthropogenic stage of evolution were characterized by fairly high values of biological activity, with the exception of the biomass of fungal mycelium, a small amount of which remained. At the early agrogenic stage, soil plowing without irrigation did not significantly change their microbiological properties; however, the increase in urease activity in some studied profiles may indicate that cattle fertilizers were applied in some areas of the terraces. During the Little Ice Age (the 16–18th centuries A.D.) the terraces were abandoned, which led to the accumulation of organic carbon in the soils as a result of the fallow process, as well as an increase in their enzymatic activity. The second agrogenic stage with irrigation was characterized by a noticeable growth in the active microbial biomass, the soil phosphatase activity, and, in particular, the urease activity, which may indicate that farming was intensive and organic fertilizers were applied. In the last 20 years, the development of terraces under natural conditions led to a noticeable growth in the biological activity of upper fallow horizons. However, the urease activity significantly decreased in nonirrigated areas, whereas the indicators of microbial biomass remained at the same level.
      PubDate: 2017-01-01
      DOI: 10.1134/s2079096117010085
      Issue No: Vol. 7, No. 1 (2017)
       
  • Components of C and N cycles in natural and anthropogenic ecosystems of
           semideserts of the northern Caspian area
    • Authors: N. Yu. Kulakova; B. D. Abaturov; Yu. D. Nukhimovskaya
      Pages: 11 - 18
      Abstract: Changes in the amounts and dynamics of the deposition of carbon and nitrogen in the soil surface of anthropogenic pasture and forest ecosystems created in places of natural steppe and desert plant associations in the Northern Cis-Caspian area were studied. For two years after input, the litter of oak stands (Quercus robur) deposited 1.3 times more carbon and about the same amount of nitrogen as compared to the steppe litter, even though the mass of litter input in the forest plantation was 1.4 times less than that in the grass ecosystem. The values of carbon and nitrogen contents in the soil under steppe vegetation and under plantation were similar, but there was a redistribution of carbon and nitrogen contents in the forest soil. The carbon contents in the forest litter and 0–5 cm layer make up 33% of the contents in the litter and in 0–50 cm soil layer. The respective value was 22% under the steppe vegetation; the nitrogen contents were 2.9 and 2.0%, respectively. Due to intensive grazing, the ecosystems of microdepressions obtain 1.6–1.7 times less carbon and nitrogen than those of virgin plots. This value was 1.4 for the ecosystem of microelevations. A significant decrease in the contents of carbon and nitrogen was observed in the litter and 0–5 cm layer of meadow–chestnut soils of microdepressions under the pressure of intensive grazing.
      PubDate: 2017-01-01
      DOI: 10.1134/s2079096117010097
      Issue No: Vol. 7, No. 1 (2017)
       
  • The impact of droughts on the mineralization of reservoirs in northeastern
           Brazil
    • Authors: Yu. S. Dacenko
      Pages: 19 - 22
      Abstract: The climatic features of northeastern Brazil result in the almost complete absence of river runoff during drought periods. The extreme irregularity of runoff in the reservoirs of the region leads to an increase in water salinity by the end of the drought. The degree of mineralization growth with respect to the reservoir volume at the beginning of the dry period and the amount of water abstraction from this reservoir during this period was estimated via the calculation of water mineralization for conditions in which there is no flow to reservoirs. These estimates are presented in the form of graphical calculation diagrams for three reservoirs of the Brazilian Ceará state.
      PubDate: 2017-01-01
      DOI: 10.1134/s2079096117010048
      Issue No: Vol. 7, No. 1 (2017)
       
  • Plant communities of the lower reaches of the Volga River on soils with
           strongly seasonal dynamics of salinization
    • Authors: V. B. Golub; A. V. Chuvashov; V. V. Bondareva; L. F. Nikolaichuk
      Pages: 23 - 30
      Abstract: The database EU-RU-002 of the Lower Volga valley vegetation plots has been analyzed. The database contains the characteristics of 15029 relevés located in the region in the period from 1924 to 2013. Two associations, Alismato‒Salicornietum Golub 1985, and Crypsido aculeatae‒Salsoletum sodae ass. nova, have been discovered. These associations include halophytes and glycophytes on the same sample plots. Analysis of water extracts from soil samples made it possible to determine significant dynamics of the toxicity of a soil solution during the year. These changes are related to the hydrological regime of the Volga River.
      PubDate: 2017-01-01
      DOI: 10.1134/s207909611701005x
      Issue No: Vol. 7, No. 1 (2017)
       
  • Phytocenotic characteristic of the Achnatherum splendens (trin.) Nevski
           communities of western Transbaikalia
    • Authors: M. G. Merkusheva; A. L. Baldanova; L. N. Boloneva; I. N. Lavrent’eva
      Pages: 31 - 40
      Abstract: The phytocenotic characteristics of cheegrass (Achnatherum splendens (trin.) Nevski) communities developed on solonchaks in the haloxerophytic steppe of western Transbaikalia are given. The specific features of their composition and structure have been revealed. The similarity of the species composition of cheegrass communities is slight or medium. The botanical composition accounts for 14 species of halophytes and 17 species of halotolerant glycophytes. The communities and their production are mainly formed by three to four species, including the dominants. The production of the cheegrass communities is at a normal level (1626 g/m2 per year).
      PubDate: 2017-01-01
      DOI: 10.1134/s2079096116040041
      Issue No: Vol. 7, No. 1 (2017)
       
  • Analysis of the current status of populations of rare plant species of
           nature monument Troicki chalk mountains (Orenburg region)
    • Authors: O. A. Karimova; L. M. Abramova; Ya. M. Golovanov
      Pages: 41 - 48
      Abstract: the results are presented for the study of four rare species in the Troicki chalk mountains: Anthemis trotzkiana Claus., Matthiola fragrans Bunge, Lepidium meyeri Claus, and Zygophyllum pinnatum Cham. The total density of the studied coenopopulations ranged from 2.2 to 6.1 copies/m2, and the effective density was 1.5–4.2 copies/m2. Coenopopulations are normally incomplete, most typically lacking the spectrum of seedlings, juvenile and senile individuals, and generative individuals that peak in middle-age. Coenopopulations Anthemis trotzkiana lack postsenile individuals. By the “delta-omega” classification, coenopopulations Anthemis trotzkiana, Matthiola fragrans are growing old, Lepidium meyeri are transitional, and Zygophyllum pinnatum are mature. The indices of recovery and senescence are 0.03–0.36 and 0.03–0.72, respectively. High levels of variability and plasticity of morphometric characters have been registered.
      PubDate: 2017-01-01
      DOI: 10.1134/s2079096117010073
      Issue No: Vol. 7, No. 1 (2017)
       
  • Distribution and ecological features of Peganum harmala L. in the environs
           of Lake Baskunchak (Astrakhan oblast)
    • Authors: K. A. Grebennikov
      Pages: 49 - 51
      Abstract: The modern distribution of Peganum harmala (Peganum harmala L.) in the environs of Lake Baskunchak (including the Bogdinsko–Baskunchakskiy Nature Reserve), where the species has been found for the first time, is shown. The distribution trends of the species and its indicator role in assessing the state of natural ecosystems in the area under study are discussed.
      PubDate: 2017-01-01
      DOI: 10.1134/s2079096117010061
      Issue No: Vol. 7, No. 1 (2017)
       
  • History of research on biodiversity in Crimean hypersaline waters
    • Authors: E. V. Anufriieva; N. V. Shadrin; S. N. Shadrina
      Pages: 52 - 58
      Abstract: The paper reviews the history of research on the biodiversity of hypersaline waters in the Crimean arid zone from the end of the 18th century to the present. Summing up the accumulated knowledge on biodiversity of these water bodies, the authors have noted the presence of 290 species of eukaryotic organisms, including 190 unicellular ones, and nearly 200 species of bacteria and archaea, of which at least 100 species are represented by cyanobacteria. It has been concluded that the diversity of both prokaryotic and eukaryotic organisms is still understudied. This paper is not an exhaustive review of the history of research on the biodiversity of Crimean hypersaline waters; it is rather a prelude to such a historical study, as well as a call for a broadening and deepening of the scientific knowledge of the unique biodiversity in these extreme habitats.
      PubDate: 2017-01-01
      DOI: 10.1134/s2079096117010036
      Issue No: Vol. 7, No. 1 (2017)
       
  • Topical and trophic structure of midsummer zooplankton in saline rivers in
           the Elton Lake basin
    • Authors: V. I. Lazareva
      Pages: 59 - 68
      Abstract: In August 2013, 17 taxa of zooplankton in the rank of species (Cladocera, Cyclopoida, Calanoida, and Rotifera) and three taxa of meroplankton (Mollusca, Diptera, and Heteroptera larvae) were identified in the zooplankton of six small rivers in the basin of Lake Elton with a mineralization of 6–32 g/L. Benthoplankton formed most of the list (45% of species); euplankton constituted only 20%. Three trophic levels were distinguished in the community: peaceful phyto- and bacteriodetritophages, omnivorous animals with different body sizes (<1.5 and 1.5–6 mm), and predators. The effect of salinity on the zooplankton structure, the biotopical distribution of species, the features of trophic relations, and the food supply of predators are discussed.
      PubDate: 2017-01-01
      DOI: 10.1134/s207909611604003x
      Issue No: Vol. 7, No. 1 (2017)
       
  • New record of Rhinopoma cystops Thomas, 1903 (Mammalia, Chiroptera) in
           arid southwestern Sahara of Algeria
    • Authors: M. Ahmim; R. Tahri
      Pages: 69 - 71
      Abstract: In January 2015, a colony of approximately 50 individuals of Rhinopoma cystops was found, and 10 Asellia tridens were netted in a cave of Béchar, Algeria, near the border with Morocco, southwestern Algerian Sahara. These two species were recorded previously in Algeria, but Rhinopoma cystops has been registered in Béchar for the first time. Therefore, information regarding the distribution and geographic variation of this species are also provided in the present study.
      PubDate: 2017-01-01
      DOI: 10.1134/s2079096117010024
      Issue No: Vol. 7, No. 1 (2017)
       
 
 
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