THE INFLUENCE OF CLIMATIC AND ANTHROPOGENIC FACTORS ON HYDROLOGICAL REGIME OF RIVERS AT THE SOUTH OF KRASNOYARSK KRAI

The role of river runoff resources is very important for Kazakhstan – the country located deep within the continent, with an arid climate, and experiencing water shortage. With such a geographical location, the hydrological regime of rivers is characterized by the considerable spatiotemporal variability, thereby complicating the water resousrces management. The issue of evaluating water resources is particularly relevant not only from a scientific point of view. In recent years, it has gained socio-economic and political nature due to the increasing role of anthropogenic factors (including geopolitical ones), as well as increasingly more noticeable changes in the global and regional climate. Based on hydrometric information using modern methodology, the water resources of eight water-resources basins (WRBs) on the territory of Kazakhstan have been estimated in the context of water-resources regions.

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DYNAMICS OF MARRIAGE-FAMILY RELATIONS OF THE POPULATION OF THE SOUTH OF KRASNOYARSK KRAI IN THE LATE 1940S – LATE 1980S

Vestnik Tomskogo gosudarstvennogo universiteta ◽

10.17223/15617793/428/7 ◽

2018 ◽

pp. 54-63

Author(s):

Natalia A. Barantseva ◽

Keyword(s):

Family Relations ◽

Krasnoyarsk Krai ◽

The South

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Natural and Anthropogenic Factors Shaping the Shoreline of Klaipėda, Lithuania

Journal of Marine Science and Engineering ◽

10.3390/jmse9121456 ◽

2021 ◽

Vol 9 (12) ◽

pp. 1456

Author(s):

Vitalijus Kondrat ◽

Ilona Šakurova ◽

Eglė Baltranaitė ◽

Loreta Kelpšaitė-Rimkienė

Keyword(s):

Baltic Sea ◽

Coastal Development ◽

Eastern Coast ◽

Anthropogenic Factors ◽

The South ◽

The Baltic Sea ◽

Shoreline Position ◽

Shoreline Changes ◽

South Eastern ◽

The Baltic

Port of Klaipėda is situated in a complex hydrological system, between the Curonian Lagoon and the Baltic Sea, at the Klaipėda strait in the South-Eastern part of the Baltic Sea. It has almost 300 m of jetties separating the Curonian Spit and the mainland coast, interrupting the main path of sediment transport through the South-Eastern coast of the Baltic Sea. Due to the Port of Klaipėda reconstruction in 2002 and the beach nourishment project, which was started in 2014, the shoreline position change tendency was observed. Shoreline position measurements of various periods can be used to derive quantitative estimates of coastal process directions and intensities. These data can be used to further our understanding of the scale and timing of shoreline changes in a geological and socio-economic context. This study analyzes long- and short-term shoreline position changes before and after the Port of Klaipėda reconstruction in 2002. Positions of historical shorelines from various sources were used, and the rates (EPR, NSM, and SCE) of shoreline changes have been assessed using the Digital Shoreline Analysis System (DSAS). An extension of ArcGIS K-means clustering was applied for shoreline classification into different coastal dynamic stretches. Coastal development has changed in the long-term (1984–2019) perspective: the eroded coast length increased from 1.5 to 4.2 km in the last decades. Coastal accumulation processes have been restored by the Port of Klaipėda executing the coastal zone nourishment project in 2014.

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The contribution of tidal currents in the sedimentation of the Strait of Avlida, Southern Evoikos Gulf (Greece)

Bulletin of the Geological Society of Greece ◽

10.12681/bgsg.17350 ◽

2018 ◽

Vol 34 (2) ◽

pp. 731 ◽

Cited By ~ 2

Author(s):

Σ. E. ΠΟΥΛΟΣ ◽

Π. Γ. ΔΡΑΚΟΠΟΥΛΟΣ ◽

Σ. Ν. ΛΕΟΝΤΑΡΗΣ ◽

Ε. ΤΣΑΠΑΚΗΣ ◽

Ε. ΧΑΤΖΗΓΙΑΝΝΗ

Keyword(s):

Suspended Sediment ◽

Hydrological Regime ◽

Tidal Currents ◽

Coarse Grained ◽

The South ◽

Fine Grained ◽

Suspended Sediment Concentrations ◽

Historical Times ◽

Sea Level Fluctuation ◽

Muddy Sediments

The investigated area of Avlida (northern part of the South Evoikos Gulf), which obtained its present shape within Holocene, is characterised by shallow water depths (<12 m) and the presence of muddy sediments. The hydrological regime of the area is governed mainly by the tide (sea level fluctuation 0.25-0.4 m). The water column (in April 1998) found to be almost homogeneous with temperature and salinity to increase progressively with depth from 13.7 °C and 34.1 psu (surface) to 14.1 °C and 35.7 psu (near bed). Suspended sediment concentrations varied between 1 and 4 mg/1 with the highest values observed above the seabed (4-8 mg/I). These values of suspended sediment are relatively high when compared with other coastal areas, as that of Thermaikos Gulf (<1 mg/1). Furthermore, their presence is attributed primarily to the action of tidal currents assisted periodically by the wave activity and human interference i.e. navigation. Especially the high near bed values are associated with the near-bed activity of the tidal currents, which having usually velocities > 11 cm/s apply to the seafloor bottom shear velocities capable of causing resuspension of the surficial muddy sediments and inhibiting final deposition of the suspensates. Therefore, the fine-grained sediments are resuspended and subsequently advected by the tidal currents and eventually distributed all over the study area. Finally, the relatively coarse-grained sediments found to be more abundant at the southern part are related to the deltaic progradation within historical times of the torrential rivers Mégalo Rema and Lilantas which form the south-end part of the strait of Avlida.

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DISTRIBUTION AND BIOLOGY OF INVASIVE SPECIES OF BEAN BRUCHID ACANTHOSCELIDES OBTECTUS (INSECTA, COLEOPTERA, BRUCHIDAE)

Russian Journal of Biological Invasions ◽

10.35885/1996-1499-2021-14-4-54-76 ◽

2021 ◽

Vol 14 (4) ◽

pp. 54-76

Author(s):

V. G. Kaplin

Keyword(s):

South America ◽

Common Bean ◽

Climate Warming ◽

Anthropogenic Factors ◽

Acanthoscelides Obtectus ◽

The South ◽

The North ◽

Literary Sources ◽

European Part Of Russia ◽

Primary Habitat

The review of literary sources on ecology, biology, distribution of bean bruchid ( Acanthoscelides obtectus ) and its main food plant - Phaseolus vulgaris in North and South America; Europe, Africa, Asia, Australia and more details in Russia; the influence of abiotic, biotic and anthropogenic factors on the invasive process, phytosanitary condition of common bean crops in Russia is presented. Some aspects of the invader management are shown. The main stages and areas of cultivation of common bean and invasion of bean bruchid from their primary habitat in South America and in the south of North America are traced; the vectors and reasons causing them are considered. In Russia, the economic importance of bean bruchid has increased since the mid-1980s, which coincided with the climate warming; there was an expansion of its distribution in the eastern and north-western directions. At the last decades of the 20th century, it had penetrated in Smolensk and in the south part of the Tver and the Tomsk regions. With the increase in production of beans in Russia, the lack of systemic protection from bean bruchid and further increase of climate warming will contribute to the extension of its range to the north in the European part of Russia and the Urals to 57-58° N. Lat., where the conditions of the summer period are favorable for development of common bean and bean bruchid. To the east, it may spread to Tyva, Buryatia, the Trans-Baikal territory, the Amur region, the Jewish Autonomous region, and the southern part of the Khabarovsk territory. With the introduction of strict internal quarantine and a system of protection of common bean from this pest, which prevents the spread of infected dry bean, on the contrary, it is possible to reduce the distribution range of the bean bruchid, with its disappearance in the Siberian, Ural districts, Bashkortostan and Tatarstan.

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Assessment of the Trophic Status of the South Lagoon of Tunis (Tunisia, Mediterranean Sea): Geochemical and Statistical Approaches

Journal of Chemistry ◽

10.1155/2018/9859546 ◽

2018 ◽

Vol 2018 ◽

pp. 1-17 ◽

Cited By ~ 1

Author(s):

Myriam Abidi ◽

Rim Ben Amor ◽

Moncef Gueddari

Keyword(s):

Water Quality ◽

Trophic Status ◽

Nutrient Content ◽

Water Quality Monitoring ◽

Anthropogenic Factors ◽

The South ◽

Engineering Project ◽

Multivariate Statistical ◽

Status Assessment ◽

High Level

The trophic status assessment of the South Lagoon of Tunis, a shallow Mediterranean coastal area after its restoration, is addressed herein with respect to its various environmental settings which are taken as indicators of water quality. The lagoon had, in the past, witnessed severe environmental quality issues. To resolve these problems, a large restoration project of the lagoon was undertaken which consisted of dredging the bottom sediments removing areas of water stagnation and improving water circulation. After this restoration work, the lagoon morphology has radically changed. In this paper, we attempt to evaluate the lagoon water’s trophic state to analyze the eutrophication risk after almost 16 years. In order to achieve these purposes, two water quality monitoring campaigns were conducted (July 2013 and February 2014). Natural and anthropogenic factors controlling the nutrient content of the lagoon water have been assessed through both geochemical methods and multivariate statistical tools. The results show that the nutrients are from external sources due to the discharge of municipal and industrial wastewater from the surrounding city of the catchment in the lagoon’s south side. According to the TRIX index, the lagoon remains eutrophic presenting a “poor” water quality, notwithstanding the engineering project due to the high level of nutrients.

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A geophysical and geotechnical study to determine the hydrological regime of the Central Manitoba gold mine tailings deposit

Canadian Geotechnical Journal ◽

10.1139/t08-102 ◽

2009 ◽

Vol 46 (1) ◽

pp. 69-80 ◽

Cited By ~ 5

Author(s):

Barbara L. Sherriff ◽

Ian J. Ferguson ◽

Michael W. Gupton ◽

Jamie F. VanGulck ◽

Nikolay Sidenko ◽

...

Keyword(s):

Surface Water ◽

Water Flow ◽

Hydrological Regime ◽

Shear Zones ◽

Discharge Zone ◽

The South ◽

Groundwater Movement ◽

The North ◽

Surface Water Flow ◽

Gold Mine Tailings

Extraction of gold from quartz–carbonate shear zones has left a barren deposit of tailings at Central Manitoba mine, which remains unchanged after 70 years. In this study, the shape of the basin, the groundwater and surface water flow regime, and the electrical conductivity of the tailings have been delineated using a combination of geotechnical, geophysical, and geochemical techniques. Groundwater and surface water flow from the north–south-fractured bedrock outwards to the east and west. A component of upward groundwater movement in the deposit is due to evaporation in hot, dry summers, limited recharge from precipitation, and the tailings basin being a local groundwater discharge zone. Electromagnetic surveys indicate that the thickness of the tailings and underlying peat bog material increases from ∼1 m at the south of the tailings to ∼5 m at the north. The surveys provided an effective way of mapping the spatial distribution of acidic pore fluids and associated increased salinity. Zones of acidification, occurring mainly on the south side of the tailings, support the hypothesis that acidification is due to differential settling during the initial discharge of carbonate and sulfide minerals.

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