Subjects -> ENVIRONMENTAL STUDIES (Total: 960 journals)
    - ENVIRONMENTAL STUDIES (853 journals)
    - POLLUTION (31 journals)
    - TOXICOLOGY AND ENVIRONMENTAL SAFETY (58 journals)
    - WASTE MANAGEMENT (18 journals)

ENVIRONMENTAL STUDIES (853 journals)                  1 2 3 4 5 | Last

Showing 1 - 200 of 378 Journals sorted alphabetically
ACS Chemical Health & Safety     Hybrid Journal   (Followers: 5)
ACS ES&T Engineering     Hybrid Journal   (Followers: 9)
Acta Brasiliensis     Open Access   (Followers: 3)
Acta Ecologica Sinica     Open Access   (Followers: 11)
Acta Environmentalica Universitatis Comenianae     Open Access   (Followers: 1)
Acta Oecologica     Hybrid Journal   (Followers: 12)
Acta Regionalia et Environmentalica     Open Access   (Followers: 1)
Advanced Electronic Materials     Hybrid Journal   (Followers: 7)
Advanced Energy and Sustainability Research     Open Access   (Followers: 7)
Advanced Sustainable Systems     Hybrid Journal   (Followers: 9)
Advances in Ecological Research     Full-text available via subscription   (Followers: 45)
Advances in Environmental Chemistry     Open Access   (Followers: 12)
Advances in Environmental Sciences - International Journal of the Bioflux Society     Open Access   (Followers: 21)
Advances in Environmental Technology     Open Access   (Followers: 1)
Advances in Life Science and Technology     Open Access   (Followers: 23)
Advances in Tropical Biodiversity and Environmental Sciences     Open Access   (Followers: 5)
Aeolian Research     Hybrid Journal   (Followers: 6)
African Journal of Environmental Science and Technology     Open Access   (Followers: 5)
Agricultura Tecnica     Open Access   (Followers: 5)
Agricultural & Environmental Letters     Open Access   (Followers: 3)
Agro-Science     Full-text available via subscription   (Followers: 3)
Agroecological journal     Open Access  
Agronomy for Sustainable Development     Open Access   (Followers: 22)
Agrosystems, Geosciences & Environment     Open Access   (Followers: 7)
Amazon's Research and Environmental Law     Open Access   (Followers: 5)
Ambiência     Open Access  
Ambiens. Revista Iberoamericana Universitaria en Ambiente, Sociedad y Sustentabilidad     Open Access   (Followers: 1)
Ambiente & Agua : An Interdisciplinary Journal of Applied Science     Open Access   (Followers: 1)
American Journal of Energy and Environment     Open Access   (Followers: 5)
American Journal of Environmental Engineering     Open Access   (Followers: 16)
American Journal of Environmental Protection     Open Access   (Followers: 9)
American Journal of Environmental Sciences     Open Access   (Followers: 11)
American Naturalist     Full-text available via subscription   (Followers: 85)
Annals of Civil and Environmental Engineering     Open Access   (Followers: 3)
Annals of Environmental Science and Toxicology     Open Access   (Followers: 5)
Annals of GIS     Open Access   (Followers: 31)
Annual Review of Ecology, Evolution, and Systematics     Full-text available via subscription   (Followers: 89)
Annual Review of Environment and Resources     Full-text available via subscription   (Followers: 16)
Annual Review of Pharmacology and Toxicology     Full-text available via subscription   (Followers: 37)
Annual Review of Resource Economics     Full-text available via subscription   (Followers: 10)
Applied and Environmental Soil Science     Open Access   (Followers: 20)
Applied Ecology and Environmental Sciences     Open Access   (Followers: 30)
Applied Environmental Education & Communication     Hybrid Journal   (Followers: 19)
Applied Journal of Environmental Engineering Science     Open Access   (Followers: 2)
Aquatic Ecology     Hybrid Journal   (Followers: 40)
Aquatic Toxicology     Hybrid Journal   (Followers: 26)
Arcada : Revista de conservación del patrimonio cultural     Open Access   (Followers: 2)
Architecture, Civil Engineering, Environment     Open Access   (Followers: 4)
Archives des Maladies Professionnelles et de l'Environnement     Full-text available via subscription  
Archives of Environmental and Occupational Health     Hybrid Journal   (Followers: 12)
Archives of Environmental Contamination and Toxicology     Hybrid Journal   (Followers: 15)
Archives of Environmental Protection     Open Access   (Followers: 6)
Archives of Toxicology     Hybrid Journal   (Followers: 21)
Arctic Environmental Research     Open Access   (Followers: 1)
Asian Journal of Environment & Ecology     Open Access   (Followers: 1)
Asian Journal of Rural Development     Open Access   (Followers: 9)
Asian Review of Environmental and Earth Sciences     Open Access   (Followers: 3)
ATBU Journal of Environmental Technology     Open Access   (Followers: 5)
Atmospheric and Climate Sciences     Open Access   (Followers: 35)
Atmospheric Environment     Hybrid Journal   (Followers: 75)
Atmospheric Environment : X     Open Access   (Followers: 3)
Augm Domus : Revista electrónica del Comité de Medio Ambiente de AUGM     Open Access  
Austral Ecology     Hybrid Journal   (Followers: 18)
Australasian Journal of Environmental Management     Hybrid Journal   (Followers: 13)
Australasian Journal of Human Security     Full-text available via subscription   (Followers: 1)
Australian Journal of Environmental Education     Full-text available via subscription   (Followers: 11)
Basic & Clinical Pharmacology & Toxicology     Hybrid Journal   (Followers: 14)
Basic and Applied Ecology     Hybrid Journal   (Followers: 26)
Behavioral Ecology     Hybrid Journal   (Followers: 60)
Behavioral Ecology and Sociobiology     Hybrid Journal   (Followers: 38)
Biocenosis     Open Access  
Biochar     Hybrid Journal   (Followers: 3)
Biodegradation     Hybrid Journal   (Followers: 2)
Biodiversity     Hybrid Journal   (Followers: 31)
Biofouling: The Journal of Bioadhesion and Biofilm Research     Hybrid Journal   (Followers: 7)
Bioremediation Journal     Hybrid Journal   (Followers: 5)
BioRisk     Open Access   (Followers: 3)
BMC Ecology     Open Access   (Followers: 24)
Boletín Instituto de Derecho Ambiental y de los Recursos Naturales     Open Access  
Boletín Semillas Ambientales     Open Access  
Boston College Environmental Affairs Law Review     Open Access   (Followers: 7)
Bothalia : African Biodiversity & Conservation     Open Access   (Followers: 1)
Built Environment     Full-text available via subscription   (Followers: 5)
Bulletin of Environmental Contamination and Toxicology     Hybrid Journal   (Followers: 15)
Bulletin of the American Meteorological Society     Open Access   (Followers: 65)
Bumi Lestari Journal of Environment     Open Access  
Canadian Journal of Earth Sciences     Hybrid Journal   (Followers: 23)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 50)
Canadian Journal of Soil Science     Full-text available via subscription   (Followers: 14)
Canadian Water Resources Journal     Hybrid Journal   (Followers: 20)
Capitalism Nature Socialism     Hybrid Journal   (Followers: 28)
Carbon Capture Science & Technology     Open Access  
Carbon Resources Conversion     Open Access   (Followers: 3)
Case Studies in Chemical and Environmental Engineering     Open Access   (Followers: 1)
Casopis Slezskeho Zemskeho Muzea - serie A - vedy prirodni     Open Access  
Cell Biology and Toxicology     Hybrid Journal   (Followers: 12)
Chain Reaction     Full-text available via subscription  
Challenges in Sustainability     Open Access   (Followers: 12)
Chemical Research in Toxicology     Hybrid Journal   (Followers: 26)
Chemico-Biological Interactions     Hybrid Journal   (Followers: 3)
Chemosphere     Hybrid Journal   (Followers: 17)
Child and Adolescent Mental Health     Hybrid Journal   (Followers: 71)
China Population, Resources and Environment     Full-text available via subscription   (Followers: 4)
Ciencia, Ambiente y Clima     Open Access   (Followers: 3)
City and Environment Interactions     Open Access   (Followers: 4)
Civil and Environmental Engineering     Open Access   (Followers: 8)
Civil and Environmental Engineering Reports     Open Access   (Followers: 9)
Civil and Environmental Research     Open Access   (Followers: 22)
CLEAN - Soil, Air, Water     Hybrid Journal   (Followers: 21)
Clean Technologies     Open Access   (Followers: 1)
Clean Technologies and Environmental Policy     Hybrid Journal   (Followers: 5)
Cleaner Environmental Systems     Open Access  
Cleaner Production Letters     Hybrid Journal  
Cleanroom Technology     Full-text available via subscription   (Followers: 1)
Climate and Energy     Full-text available via subscription   (Followers: 7)
Climate Change Ecology     Open Access   (Followers: 2)
Climate Change Economics     Hybrid Journal   (Followers: 36)
Climate Policy     Hybrid Journal   (Followers: 52)
Climate Resilience and Sustainability     Open Access   (Followers: 21)
Coastal Engineering Journal     Hybrid Journal   (Followers: 9)
Cogent Environmental Science     Open Access  
Columbia Journal of Environmental Law     Open Access   (Followers: 15)
Computational Ecology and Software     Open Access   (Followers: 11)
Computational Water, Energy, and Environmental Engineering     Open Access   (Followers: 5)
Conservation and Society     Open Access   (Followers: 14)
Conservation Letters     Open Access   (Followers: 51)
Conservation Science     Open Access   (Followers: 30)
Consilience : The Journal of Sustainable Development     Open Access   (Followers: 3)
Contemporary Problems of Ecology     Hybrid Journal   (Followers: 4)
Critical Reviews in Environmental Science and Technology     Hybrid Journal   (Followers: 15)
Critical Reviews in Toxicology     Hybrid Journal   (Followers: 27)
Cuadernos de Investigación Geográfica / Geographical Research Letters     Open Access  
Culture, Agriculture, Food and Environment     Hybrid Journal   (Followers: 26)
Culture, Agriculture, Food and Environment     Hybrid Journal   (Followers: 11)
Current Environmental Engineering     Hybrid Journal  
Current Environmental Health Reports     Hybrid Journal   (Followers: 2)
Current Forestry Reports     Hybrid Journal   (Followers: 1)
Current Landscape Ecology Reports     Hybrid Journal   (Followers: 2)
Current Opinion in Environmental Science & Health     Hybrid Journal   (Followers: 1)
Current Opinion in Environmental Sustainability     Hybrid Journal   (Followers: 17)
Current Research in Ecological and Social Psychology     Open Access   (Followers: 1)
Current Research in Environmental Sustainability     Open Access   (Followers: 2)
Current Research in Green and Sustainable Chemistry     Open Access   (Followers: 1)
Current Research in Microbiology     Open Access   (Followers: 27)
Current Sustainable/Renewable Energy Reports     Hybrid Journal   (Followers: 9)
Current World Environment     Open Access   (Followers: 7)
Developments in Environmental Modelling     Full-text available via subscription   (Followers: 8)
Die Bodenkultur : Journal of Land Management, Food and Environment     Open Access   (Followers: 2)
Disaster Prevention and Management     Hybrid Journal   (Followers: 32)
Discover Sustainability     Open Access   (Followers: 2)
disP - The Planning Review     Hybrid Journal   (Followers: 1)
Drug and Chemical Toxicology     Hybrid Journal   (Followers: 17)
Duke Environmental Law & Policy Forum     Open Access   (Followers: 7)
Dynamiques Environnementales     Open Access   (Followers: 1)
E3S Web of Conferences     Open Access   (Followers: 2)
Earth and Environmental Science Transactions of the Royal Society of Edinburgh     Hybrid Journal   (Followers: 6)
Earth Interactions     Open Access   (Followers: 13)
Earth Science Informatics     Hybrid Journal   (Followers: 5)
Earth System Governance     Open Access  
Earth System Science Data (ESSD)     Open Access   (Followers: 8)
Earth Systems and Environment     Hybrid Journal   (Followers: 3)
Earthquake Science     Hybrid Journal   (Followers: 15)
EchoGéo     Open Access  
Eco-Thinking     Open Access   (Followers: 5)
Ecocycles     Open Access   (Followers: 6)
Ecohydrology     Hybrid Journal   (Followers: 11)
Ecohydrology & Hydrobiology     Full-text available via subscription   (Followers: 4)
Ecologia Aplicada     Open Access  
Ecología en Bolivia     Open Access  
Ecological Applications     Full-text available via subscription   (Followers: 220)
Ecological Chemistry and Engineering S     Open Access   (Followers: 4)
Ecological Complexity     Hybrid Journal   (Followers: 7)
Ecological Engineering     Hybrid Journal   (Followers: 4)
Ecological Indicators     Hybrid Journal   (Followers: 22)
Ecological Informatics     Hybrid Journal   (Followers: 4)
Ecological Management & Restoration     Hybrid Journal   (Followers: 15)
Ecological Modelling     Hybrid Journal   (Followers: 96)
Ecological Monographs     Full-text available via subscription   (Followers: 39)
Ecological Processes     Open Access   (Followers: 2)
Ecological Questions     Open Access   (Followers: 4)
Ecological Research     Hybrid Journal   (Followers: 12)
Ecological Restoration     Full-text available via subscription   (Followers: 23)
Ecologist, The     Full-text available via subscription   (Followers: 23)
Ecology     Full-text available via subscription   (Followers: 488)
Ecology and Evolution     Open Access   (Followers: 105)
Ecology Letters     Hybrid Journal   (Followers: 345)
EcoMat : Functional Materials for Green Energy and Environment     Open Access   (Followers: 2)
Economics and Policy of Energy and the Environment     Full-text available via subscription   (Followers: 14)
Économie rurale     Open Access   (Followers: 3)
Ecoprint : An International Journal of Ecology     Open Access   (Followers: 6)
Ecopsychology     Hybrid Journal   (Followers: 8)
Ecosphere     Open Access   (Followers: 9)
Ecosystem Services     Hybrid Journal   (Followers: 10)
Ecosystems     Hybrid Journal   (Followers: 33)
Ecosystems and People     Open Access   (Followers: 3)
Ecotoxicology     Hybrid Journal   (Followers: 11)
Ecotoxicology and Environmental Safety     Hybrid Journal   (Followers: 12)
Ecotrophic : Journal of Environmental Science     Open Access  
Ecozon@ : European Journal of Literature, Culture and Environment     Open Access   (Followers: 5)
Éducation relative à l'environnement     Open Access  

        1 2 3 4 5 | Last

Similar Journals
Journal Cover
Contemporary Problems of Ecology
Journal Prestige (SJR): 0.249
Number of Followers: 4  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1995-4263 - ISSN (Online) 1995-4255
Published by Springer-Verlag Homepage  [2654 journals]
  • Composition and Concentration of Hydrocarbons of Bottom Sediments in the
           CHPP-3 Diesel-Fuel Spill Zone at AO NTEC (Norilsk, Arctic Siberia)

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      Abstract: This work contains an analysis of the total content of petroleum products (hydrocarbons) in samples and columns of bottom sediments (BS) of the Noril’skaya–Pyasino group of water objects contaminated as a result of a diesel fuel spill from the CHPP-3 reservoir at AO NTEC near Norilsk. Two methods—fluorimetry and gas chromatography—have been used for analysis. Gas chromatography is also used to obtain the distribution of n-alkanes in extracts from BS and study the contribution of hydrocarbons (HCs) of diesel fuel and of slightly mature organic matter from modern sediments in the total content of HCs. The HC composition of diesel fuel and of chloroform extracts from BS is determined. It is shown that the pollution of BS in Lake Pyasino with HCs is insignificant when compared with their background content, and the maximal pollution is revealed for BS in the Ambarnaya River.
      PubDate: 2021-07-01
       
  • Oil Spills in Fresh Waters and State of Ecosystem of Lake Pyasino before
           the Incidental Spill of 2020

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      Abstract: This article presents the history of large oil spills in freshwaters, considering the processes of physicochemical and biological degradation of oil. It discusses the toxicity of oil for hydrobionts and effects of oil pollution on communities of plankton, benthos, and ichthyofauna, as well as challenges in mitigating the environmental impact of oil spills. The discussion is concerned with the state of the ecosystem in Lake Pyasino before the incidental spill of 2020, specifically, hydrochemical indicators; species composition; and abundance and biomass of plankton, benthos, and fish. Candidate technologies for restoring the Lake Pyasino ecosystem are reviewed, including “bottom-up” biomanipulation.
      PubDate: 2021-07-01
       
  • Bacteria of Lake Pyasino and Adjacent Rivers after an Accidental Diesel
           Spill in 2020

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      Abstract: The bacterial composition of water and sediments in Lake Pyasino and adjacent rivers has been studied by high-throughput sequencing for the first time. No hydrocarbon-degrading bacteria are found in the river sections exposed to the diesel spillage in May 2020. The Daldykan and Ambarnaya rivers, located downstream of the spill site, are dominated by bacteria that oxidize sulfur and heavy metals. At the same time, these bacteria are not found in Lake Pyasino, which is dominated by small cyanobacteria. Thus, the composition of bacteria in the water and sediments of the Norilsk-Pyasino lake–river system corresponds to the technogenic impact to which it is exposed and also demonstrates the buffer properties of Lake Pyasino as water flows into the Kara Sea.
      PubDate: 2021-07-01
       
  • Zooplankton of Lake Pyasino and the Rivers Flowing into It after the
           Diesel Spill in 2020

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      Abstract: At the beginning of August, 2 months after 20 000 t of diesel fuel spilled into the Bezymyanny Stream (which took it out to the Daldykan and Ambarnaya rivers), the large Norilsk expedition of the Siberian Branch, Russian Academy of Sciences, sampled net zooplankton at 13 stations located in both sections of these rivers and Lake Pyasino with the Pyasina River outflowing from it. A comparative analysis of the species composition, abundance, biomass, and saprobity index of zooplankton at these stations has been carried out. The productions of rotifer and crustacean zooplankton and potential production of planktivorous fish in Lake Pyasino have been calculated. Based on the state of zooplankton, a gradual improvement in water quality has been observed from river areas exposed to the oil products to the northern part of the lake and the River Pyasina outflow. The low abundance and biomass of zooplankton in the lake (43 800 ± 17 550 ind./m3, 112.8 ± 26.2 mg/m3, on average) due to the dominance of rotifers (Ploesoma truncatum (Levander), Bipalpus hudsoni (Imhof), and Conochilus unicornis Rousselet) resulted in low values of zooplankton production and the potential production of planktivorous fish (0.85 kg/ha per season).
      PubDate: 2021-07-01
       
  • Phytoplankton and Phytoperiphyton Characteristics of Lake Pyasino and Its
           Tributaries after an Accidental Fuel Spill in 2020

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      Abstract: — An assessment of the species composition, abundance, biomass, and pigment characteristics of phytoperiphyton and phytoplankton of Lake Pyasino, its tributaries (Bezymyannyi Stream, Daldykan, Ambarnaya, and Norilskaya rivers), and the head of the Pyasina River has been carried out after a manmade accident (a diesel-fuel spill near the city of Norilsk in May 2020). A significant decline in the biomass and changes in the species composition of phytoperiphyton after the water was contaminated by fuel is revealed only near the spillage site (in the Daldykan River and the Ambarnaya River downstream the mouth of the Daldykan). Downstream, in the Ambarnaya mouth zone, as a response to the release of a large amount of nutrients during the decomposition of fuel products and dead organisms, as well as the mechanical cleaning of the bank line, there has been a massive growth of diatom and green algae (Tabularia tabulata, Spirogyra sp.) in the water column and the appearance of indicators of organic pollution (Euglenophyceae and Cryptophyceae). No significant changes in the plankton of Lake Pyasino and the Pyasina River in comparison with the data obtained in the second half of the 20th century (i.e., long before the accident) are found. Species composition and quantitative features, as well as amount and ratio of pigments, characterized the phytoplankton and phytoperiphyton of Lake Pyasino and the Pyasina River as a normally functioning freshwater community of oligotrophic waters. All this indicates the absence of a negative impact of the accidental fuel spill on the ecosystem of Lake Pyasino and the Pyasina River.
      PubDate: 2021-07-01
       
  • Hydrochemical Indicators of Water Quality in the Norilsk–Pyasino
           Lake–River System after a Diesel Fuel Spill at Norilsk Heat and Power
           Plant 3 in 2020

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      Abstract: The results of a hydrochemical analysis of the consequences of an accidental fuel release in the Norilsk–Pyasino water system are presented. The pollution of watercourses in the catchment of Lake Pyasino (a nameless (Nadezhdinsky) creek, the Daldykan River, and the Ambarnaya River) with oil products, phenols, easily oxidizable and hard to oxidize organic matter (COD, PO, and BOD5), suspended solids, inorganic salts, and heavy metals at concentrations exceeding the background levels and MPC for fishery water bodies, as well as a temperature rise in waters of the nameless creek near Norilsk Heat and Power Plant 3 (CHPP-3), have been revealed. The contamination of the surface water decreases downstream in ascending order: nameless creek–Daldykan River–Ambarnaya River. The occurrence of oil products, phenols, and organic substances in the surface waters 2 months after the fuel spill is obviously due to their diffusion from the river bottom sediments, which accumulated a considerable quantity of heavy fractions of diesel fuel after the accident. Increased concentrations of Ca, Cu, Zn, Mn, Co, and Ni in the waters of the studied tributaries of Lake Pyasino are not directly related to the accident; they result from the general technogenic pollution of the territory and the increased geochemical background for these elements. Water contamination with oil products and phenols in the studied areas of Lake Pyasino (its central and northern parts) and the Pyasino River has not been detected. However, Pb concentrations exceed the MPC and Cd is recorded in the water, which is probably due to pollutants that accumulated in previous years.
      PubDate: 2021-07-01
       
  • Zoobenthos of Lake Pyasino and the Rivers Flowing into It after the Diesel
           Spill of 2020

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      Abstract: — The species composition and quantitative characteristics of the zoobenthos in Lake Pyasino and rivers flowing into it after a diesel spill have been analyzed. The production of zoobenthos and potential production of benthivorous fish in Lake Pyasino have been calculated. A small number of zoobenthos species and low values of abundance and biomass are revealed. In the Bezymyanny Stream, the mouth of the Daldykan River, and the Ambarnaya River, oligochaetes Limnodrilus hoffmeisteri Claparede and Tubifex tubifex (O. F. Muller) dominate in the zoobenthos abundance and biomass. In Lake Pyasino and the Pyasina River outflow, larvae of caddis flies, chironomids, stoneflies, and amphipods prevail. In the area of the deepwater silted station of Lake Pyasino, oligochaetes L. hoffmeisteri develop, the proportion of which in the benthic fauna at this station (40 and 79% of the total biomass and abundance, respectively) is maximal. The amphipod Monoporeia affinis (Lindström) dominates in terms of biomass at this station. A decrease in the chironomid diversity, an increase in the proportion of polysaprobic oligochaetes, and lower values of the Shannon index in Lake Pyasino in 2020 when compared to 1992 are found. The low abundance (2181 ± 2048 ind./m2) and biomass (2.01 ± 1.85 g/m2) of zoobenthos in the lake results in low values of zoobenthos production and the potential production of benthivorous fish (3 kg/ha per season). Based on the state of zoobenthos, an improvement in water quality has been observed from river sections exposed to the oil spill to the lake and the source of the River Pyasina.
      PubDate: 2021-07-01
       
  • Morphological Variability of Nitraria Species in Central and Southern
           Kazakhstan

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      Abstract: The variability of metric traits has been studied in 20 Kazakhstan populations of three Nitraria species (N. schoberi L., N. sibirica Pall., and N. komarovii Iljin & Lava ex Bobrov). According to the results, N. sibirica differs from N. schoberi and N. komarovii in small leaves, fruits, and seeds, as well as in the structural features of inflorescences and flowers. N. sibirica is characterized by a greater number of flowers per inflorescence (25–66 on average) than N. schoberi and N. komarovii (14–28 on average). Additionally, N. sibirica differs from N. schoberi by narrower (1.3×) petals and smaller anthers (1.46× in length and 1.2× in width) and pistils (1.25× in length and 1.44× in width). N. komarovii differs from N. schoberi by narrower leaves (1.7×). N. komarovii is characterized by relatively large (especially in width) size of anthers that, together with smaller petals, makes it possible to distinguish this species during flowering. Flowers of N. komarovii are bright yellow, while those in N. schoberi and N. sibirica are white and light purple, respectively. N. komarovii fruits are orange, pale red, or bright red. Fruits of N. schoberi and N. sibirica are dark burgundy and black, respectively. At the intraspecific level, most of the studied metric traits (except for the habitus of N. sibirica plants) are stable and do not depend on the 16 climatic parameters of plant habitats. At the same time, a number of morphological features have been revealed in N. sibirica plants from the Ili Depression. In these populations, N. sibirica plants form shrubs up to 1.8 m in height with a large (up to 90) number of flowers per inflorescence, large petals (3.5 mm in length and 2.2 mm in width on average), small (~0.6 mm) anthers, small (5–5.5 mm in length) fruits, and small (~4 mm in length) narrow ovate stones. These features indicate the ecological–geographical differentiation of N. sibirica under the extra-arid conditions of the stony desert of the depression and evidence a separate taxonomic rank of these populations.
      PubDate: 2021-05-01
       
  • Using Information Statistics to Study the Ecology of Vegetation and
           Dynamic Processes of the Earth’s Vegetation Cover

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      Abstract: Methods for the ecological and geographical analysis of vegetation, as part of the method of diversity, which make it possible to identify the main botanical–geographical relationships and determine the dynamic processes of vegetation, are considered. These methods can be used at different structural levels of vegetation: global, regional, landscape, and even cenotic.
      PubDate: 2021-05-01
       
  • Structure and Developmental Rhythm of Shoot Systems of A. frutescens (L.)
           K. Koch., A. replicata Lam., and A. pyrifolia Bunge (Atraphaxis L.,
           Polygonaceae)

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      Abstract: A structural and rhythmological analysis of shoot systems of three Atraphaxis species has been carried out. The species demonstrate differences in the structure of terminal synflorescences, floral units, and generative shoots. The duration of spring–summer flowering of Atraphaxis is determined by the number and branching order of paracladia in synflorescence and by the length of generative shoots. The species differ in the morphological differentiation of the axes and in the distribution of functions between generative and vegetative shoots. The main skeletal axes of A. frutescens are based on the generative shoots, which perform both assimilative and reproductive functions. The species takes the life form of an aeroxylic shrub, dwarf shrub or semi-shrub, depending on the preserved part of vegetative zone of generative shoots, which is determined by wintering conditions. The main skeletal axes of A. replicata are based on both generative and vegetative shoots. Terminal abbreviation, that is, the underdevelopment of terminal synflorescence in powerful generative shoots, creates conditions for the transfer of reproductive function to small, early flowering generative shoots, which allows the species to adapt to a semiarid climate. The formation of a perennial axial system in A. pyrifolia is based on powerful branched vegetative shoots, making it possible to more fully implement the advantages of acrotonic branching and achieve a significant size. The specialization of generative shoots in the performance of the reproductive function in this species is most fully implemented.
      PubDate: 2021-05-01
       
  • Geographic and Intraspecific Variation of Cold Hardiness in Ants of the
           Genus Lasius Fabricius, 1804 (Hymenoptera, Formicidae)

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      Abstract: As a model species to study the geographic variation of cold hardiness in insects, we use ants Lasius flavus from populations of territories separated by thousands of kilometers (southern Finland, the Moscow region, and Amur oblast) and with contrasting climates, from maritime variants to climates differing in degrees of continentality. We measure supercooling points (SCPs) and the temperature at which 50% of the sample perishes (LT50%) and evaluate overwintering conditions. The data on L. flavus are compared to similar data obtained on L. niger, аs well as to similar measurements in separate nests of L. alienus, L. psammophilus, and L. fuliginosus, which were published earlier. The workers of L. flavus and L. niger have similar values of cold hardiness (LT50% from –13 to –15°C, minimum average SCP from –24 to –25°C), although these species inhabit different climatic zones and arrange their overwintering chambers at different depths. Such resistance to long-term exposure to negative temperatures is more than sufficient for overwintering, even in the coldest of the studied areas (village of Arkhara, Amur oblast), where the average minimum temperature in January in the ant overwintering chambers at a depth of 50 cm does not fall below –6°C. The variation in cold hardiness and higher values of its parameters in other studied ant species are due to their insufficient preparedness for overwintering. However, the narrow range of SCP values (from –27 to –29°C) in the most cold-resistant individuals of all studied species strongly suggests that their average SCP and LT50% values are similar to those of L. flavus and L. niger. The similar (or perhaps identical) cold hardiness of the studied ant species appears to be a stable trait of the genus Lasius, as was demonstrated for another ant genus, Myrmica, and which is dissimilar to the genus Formica, in which different species have individual characteristics of cold-resistance. Excessive for overwintering in the warmer climate (southern Finland and Estonia), such cold hardiness appears to have no adaptive value. It can be considered a byproduct of diapause, which is manifested in preadaptation to withstand negative temperature. However, it was this cold hardiness that allowed the ant species to colonize the vast territory of southern Siberia and the Far East.
      PubDate: 2021-05-01
       
  • Desert Ephemeral Synusia As an Indicator for Archeological Sites

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      Abstract: — A vegetation survey of three model sites has been conducted on the Emdy limestone plateau in the Mangyshlak middle desert subzone on the eastern shore of the Caspian Sea (Western Kazakhstan). The main goal was to find indicator species in vegetation composition which reflect ancient anthropogenic influence from about 1500 years ago. The model sites are situated in comparable ecological conditions and differ only by the type and time of anthropogenic influence. One is located in the area of an ancient settlement from the 3rd to 5th centuries, the second is in an area that may have been used for agriculture, and the third is a control without hardly any anthropogenic influence. It is found that four main synusia can be determined in the plant community structure. The most diverse synusia of the desert ephemeras contains 61% of the plant species pool and may be considered an indicator of former anthropogenic activity. There were no specific plants connected with past agriculture on the second site. Considering this fact, together with general ecological conditions of the site, it was concluded that there had been no agriculture on this site. It is shown that different ephemeral species react to microhabitat characteristics such as humidity, insolation, salinization, and soil bioturbations. All ephemeral species can be divided into true and induced ephemera. The latter group consists of widespread ruderal annual mesophytes (Buglossoides arvensis and Descurainia sophia). These species appear in places of long and intense anthropogenic pressure and are able to persist in plant communities at least up to 1500 years after the end of anthropogenic pressure.
      PubDate: 2021-05-01
       
  • Tundra and Steppe Locations of Altai Highland Depressions: Features of
           Vegetation Community and Soil Cover and Their Thermal Regime

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      Abstract: The combination of steppe and tundra locations at Altai highland depressions—Bertek and Khindiktig-Khol’—is considered with regard to verifying the hypothesis of the existence of a tundra steppe in northern Eurasia during the Last Glacial Maximum (LGM) and its contemporary landscape analogues. Data on soil–vegetation cover diversity at the Altai highland depressions are represented. Cause-and-effect relations explaining the spatial differentiation of nature complexes are identified. The thermal regime of locations with the predominance of steppe and dwarf-birch vegetation is investigated. The interrelation between soil–vegetation cover differentiation and distinction in the microclimate and the permafrost boundary are proved.
      PubDate: 2021-05-01
       
  • Reconstruction of Environmental Conditions in the Eastern Part of
           Primorsky Krai (Russian Far East) in the Late Holocene

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      Abstract: This paper examines a 115 cm long profile section of lacustrine-swamp sediments from the Langou I Bay (eastern part of Primorsky Krai; 44°25′10.16″ N, 135°54′26.08″ E). According to the produced age model, the sediments are 3900 years old. A multiproxy study involving geochemical, chironomid, diatom, and palynological analysis indicates that the climatic and environmental conditions on the seacoast in the eastern part of Primorsky Krai developed in many respects synchronously with known climatic phases of the Late Holocene. The period from ca. 4200 to 2600 cal years BP corresponds to the first and second warm stages of the Jōmon period and the late Jōmon transgression in Japan. The peak of summer temperatures in the vicinity of the Langou I Bay occurred between 2900 and 2600 cal years BP. The cooling that began after 2600 cal years BP was not as severe in the study area as in Japan (cold Jōmon and Kofun stages): the reconstructed temperatures were 1°C lower than now; in Japan, they were 2–3°C below the current level. The Medieval Climate Optimum (Nara–Heian–Kamakura stage in Japan) reconstructed for the eastern part of Primorsky Krai in the period from 1250 to 750 cal years BP featured a humid climate with summer temperatures ca. 1.5°C higher than at present. The period between 750 and 250 cal years BP correlates with the Little Ice Age: summer temperatures had dropped to 1.5–2°C below the modern one. In the last 200 years, the lake has been shallowing and has nearly dried out. This period is marked by temperature fluctuations amid the trend of climate warming.
      PubDate: 2021-05-01
       
  • Impacts of Forest–Peat Fires on Soils and Their Influence on Carbon
           Losses in Phytogenic Microelevations of Mountain Swamps in the Southern
           Part of Central Siberia

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      Abstract: An assessment of the degree of contrast in the physicochemical properties of pyrogenic peat soils and fire-induced carbon losses 20 years after a major fire that partially destroyed a swamp spruce forest (Picea obovata Ledeb.) located within a complex of small river valleys in Kuznetsk Alatau, Republic of Khakassia, is made. The area affected by the fire is currently occupied by a shrub–sedge–green moss–hypnum birch forest (Betula pubescens Ehrh.) belonging to the group of short-term–secondary postfire grass forests. The pyrogenic peat soils (i.e., mechanical and chemical underburning) that formed as a result of passive smoldering (i.e., thermal impact below the ignition point) feature a high variability of physicochemical parameters (Cv = 26–37%). The application of multivariate statistical analysis techniques (cluster, discriminant, and canonical analysis) has made it possible to distinguish and statistically substantiate four clusters that correlate with the series of pyrogenic peat soils. Organic carbon makes the greatest (83%) input into the total contribution of chemical parameters to the differentiation of clusters, while the input of the volumetric water content is significantly less (15%). Based on the diversity and abundance of fire traces in the profile of pyrogenic peat soils, the distinguished clusters have been conditionally associated with slight, moderate, medium, and strong thermal impacts. Proportionally to the fire impact intensity, the soil clusters are enriched with ash components by 1.6–2.7 times (the ash content varies from 18.9 to 77%) and compacted by 2.2–4.3 times (the bulk weight reaches 0.147–0.421 g/cm3), while their pH value gradually changes from 6.8 to 7.6. A new approach to assessing carbon losses that occur in the course of passive peat smoldering is proposed. The new approach is based on the difference in the carbon content before and after the fire; it supplements the traditional method based on the peat-deposit incineration depth. The additional carbon losses in the 0- to 20-cm layer of pyrogenic peat soils vary in the range from 1.6 to 4.0 kg/m2, which is equivalent to 5.9–14.8 kg/m2 in CO2 emissions. The data on additional carbon losses at the stage of passive peat deposit smoldering are presented for the first time.
      PubDate: 2021-05-01
       
  • Enzymatic Biotesting: Scientific Basis and Application

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      Abstract: The paper provides a review of the current state of research in the field of biotesting, and the problems of environmental studies and ways to solve them are discussed. The basic principles and examples of using enzymes for detecting toxicants in various environmental samples are considered. Based on an analysis of numerous published data, the advantages and limitations, as well as the prospects for using enzymes for performing biotesting tasks, are assessed. A separate section of the review is devoted to bioluminescent enzymatic bioassays developed by the authors and successfully used for environmental monitoring of water, soil, and air. The necessity of developing a battery of enzymatic bioassays is substantiated. It allows one to have the most complete and accurate information about the degree of pollution of environmental objects.
      PubDate: 2021-05-01
       
  • Decomposition of Main Litter Types and Nitrogen Release in Post-fire Larch
           Forests of the Russian Far East

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      Abstract: Decomposition processes in larch forests, which occupy a significant part of the boreal zone and are most frequently affected by devastating ground fires, are poorly researched. In the course of a long-term (850 days) field experiment, the decomposition of litter types typical for boreal larch forests of the Russian Far East (needles, leaves, branches, and grass) was monitored in larch stands, both natural ones and those disturbed by fire. The following litter parameters were measured: mass loss, carbon (C) and nitrogen (N) dynamics, respiration, and environmental conditions (temperature and humidity). It is established that, 15 years after a long-lasting ground fire, the inflow of C and N with ground litter has decreased 2.2 times in comparison with the prefire level. At this stage of post-fire succession, the share of tree litter is lower, while the share of low-lignin grass litter is higher in comparison with the control. No differences in mass loss rates were identified between the studied stands for leaves, grass, and branches. However, at the end of the experiment (day 850, p = 0.0035), needles were decomposing more slowly in the burned larch forest than in the control. A lower CO2 emission intensity featured by the needle litter in the postfire forest (p = 0.0207) in comparison with the control and a lower nitrogen content in decomposing needles at later stages of the experiment (p = 0.0234) indicate that the post-fire factor inhibits microbiological activities. A decrease in the total N inflow with litter in the post-fire stand, combined with a lower needle decomposition rate, results in a slower release of nitrogen and its availability to plants and microorganisms, which may affect the restoration of boreal larch forest ecosystems damaged by fires.
      PubDate: 2021-03-01
       
  • Effects of the Growth Substrate on the Restoration of Stipa capillata L.
           Populations on Refuse Dumps

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      Abstract: A 5-year-long experiment was carried out to assess the possibility of creating a naturelike community of meadow–steppe plant species with the predomination of Stipa capillata L. on the overburden dump of the Vinogradovskii coal pit in Kemerovo oblast. The dump preparation involved leveling the technogenic eluvium and its subsequent covering with (1) a 10-cm layer of fertile topsoil (FTS) taken from heaps of soil removed and piled prior to the dump formation or (2) a 10-cm layer of potentially fertile undersoil (PFUS) consisting of loesslike loam from the overburden dump. A flat site on a sandstone dump with a lithogenically undeveloped soil layer without the application of FTS or PFUS was used as the control. The herbal–seed mixture (HSM) was procured in summer and fall in Bachatskie Sopki regional botanical reserve on steppe slopes, whose vegetation is constituted by meadow–steppe plant communities with the predomination of S. capillata. The experimental and control sites were monitored for 5 years, from 2015 to 2019. The variant with loamy undersoil provides the best conditions for the growth and development of S. capillata: some individuals start blossoming as early as in the first year; in the third year, all plants blossom and fruit; and, in the fifth year, the share of S. capillata in the total productivity amounts to 83.6%. The plants form a thick sod layer and successfully compete with weeds. In the variant with FTS, the share of S. capillata was 4–8% in 2015–2018 and reached 30.1% only in 2019. The suppression of S. capillata in this variant is caused by the high competitiveness of the species Elytrigia repens (L.) Nevski, whose rhizomes were brought to the dump together with FTS from the soil heaps. In the control variant, an S. capillata community was noted in the fifth–fourth years; apparently, it originates from seeds dispersed from the experimental variants.
      PubDate: 2021-03-01
       
  • Spatial Monitoring of the Modern Environmental Situation in Localities of
           Vavilovia formosa (Fabaceae) Based on Predictive Climatic Modeling

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      Abstract: Spatial monitoring was conducted and the environmental situation assessed in local populations of a relict endemic species, V. formosa, based on a climatic modeling of its distribution range performed using the maximum entropy method. Plants belonging to this species live only in high mountains on open unsodded shale screes in periglacial zones and sporadically occur in mountain systems of the Taurus Mountains, Armenian Highlands, Caucasus Ridge, and Elburz Range. V. formosa is an extremely rare species listed in the Red Data Books of Russia, Azerbaijan, and Armenia, as well as in many regional Red Data Books. The limiting factors determining its rarity previously remained unidentified, which raised the need to assess the environmental situation in all habitats of this species on the basis of climatic modeling. An original methodology has been developed to assess the environmental situation within and around the localities of the species using the following gradations: favorable, unfavorable, and ambivalent; a quantitative point-based assessment technique is proposed for this purpose. The new methodology makes it possible to identify the most favorable areas for the preservation of local V. formosa populations. The environmental situation was recognized low favorable for 11 local populations, unfavorable for 23 local populations, and ambivalent for 36 local populations. Such an approach to describing the environmental situation around localities is proposed for the first time in international practice. The purpose of this approach is to obtain the most accurate formalized information on the climatic situation in each locality and in each nestle cell surrounding the locality throughout the entire distribution range of a given species. To formalize a description of a specific climatic situation, a color scale of rasters generated in MAXENT is proposed: 1 point is assigned to loci adversely affected by the complex of climatic factors (blue segment of the spectrum), 2 points are assigned to neutrally affected loci (green segment of the spectrum), and 3 points are assigned to loci positively affected by the complex of climatic factors (yellow-red segment of the spectrum).
      PubDate: 2021-03-01
       
  • Herbivore Diet Selectivity and Its Influence over Ecosystem Recycling in
           Wrangel Island

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      Abstract: Under increasing human activity in Arctic areas and in the face of global climate change, the study of Arctic communities and ecosystems is becoming more and more relevant. However, the question of the impact of interspecific interactions in their transformation remains unresolved. The paper deals with an analysis of diet selectivity of Wrangel Island lemming, goose and ruminant species, also with an estimation of the selectivity influence on their long-term community dynamics and the entire tundra ecosystem functioning. It was shown that the herbivore selectivity distribution mainly depends on their morphophisiology and that, under equal conditions, lesser selective feeders become dominant with increasing biodiversity. We conclude that, despite the considerable human impact on the composition of herbivore species on the island, their mainly endogenous dynamics of abundance distribution correspond to ecological succession, in which the total herbivore biomass decreased by half and their total phytomass consumption—and likely the whole primary production—decreased more than fourfold.
      PubDate: 2021-03-01
       
 
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