scholarly journals Influence of the Cement Dust on Ants Grouping (Hymenoptera, Formicidae)

2020 ◽  
Vol 7 (4) ◽  
pp. 19-26
Author(s):  
Tetiana Mykytyn ◽  
Nelia Dolynko ◽  
Vasyl Stefurak ◽  
Natalia Bielova ◽  
Vasyl Kuzenko
Keyword(s):  
Lasius Niger ◽  
Anthropogenic Influence ◽  
Cement Dust ◽  
Control Zone ◽  
Ant Nest ◽  
Area Of Influence ◽  
The Village ◽  
Polluted Zone ◽  
Adaptive Reaction ◽  
Source Of Pollution

Research of the influence of cement dust in zone of PJSC “Ivano-Frankivskcement” on the ants grouping was conducted. In this exploration was noticed that at the anthropogenic load disappears ants of the genus Formica, which are replaced by species of the genus Lasius and Myrmica. Analyzing the distribution of ants genera and species on experimental meadows, we found a direct correlation between the ants number and distance from the sources of cement dust (r=0.87 at p<0.05). The largest number of the ant species observed in the area of influence from the genus Lasius. Myrmica nests are found not closer than 1 km from PJSC “Ivano-Frankivskcement”, Formica nests are only in the control. Under the action of cement dust on biotopes, the ants display a non-adaptive reaction. The analysis of changes in the population density of the particular genera showed that the nests density of all genera is minimal on the meadows located near the sources of cement dust. With remoteness from the source of pollution, the density of colonies reliably increases (r=0,97 at p<0,05). Colonies of the genus Formica (F. fusca) registered only in control reached the density of grouping 1,5±1,1 nests at 100m the accounting route. For the forest biotopes, the nests density of the genus Lasius is higher in control by 1.8 times (3.1 nests/25 m2) than in the village (1.75 nests/25 m2). For other genera (Camponotus, Myrmica and Formica), an opposite reaction was registered. The nests density of F. fusca, which are registered only in the control, reached 2.5 ± 1.1 nests for 100 m the accounting route. With a decrease in the pollution degree, the proportion of underground nests increases (r=0,90 at p<0,05), the proportion of the dome nests decreases (r=-0,94 at p<0,05). At the same time, the size of dome on average decreases when removed from the source pollution. All nests registered in the most polluted zone consist of a mixture of cement dust and earths up to 45 cm high. About 75 % of all nests found were heavily overgrown. When excavating the nests the dome was as if cemented. Adaptation of the ants to the influence of cement dust differs from other influence types and is expressed in the fact that in technogenic territories nests are more often dome-shaped, smaller diameter and considerably higher nests than those located in the control zone. This is because the soil near PJSC “Ivano-Frankivskcement” is covered with a layer of the lime dust which reaches 5 cm. Lasius niger is resistant to various forms of the anthropogenic influence, which can be explained by the adaptive features of the forms ant nest.

The effect of Lasius niger (Hymenoptera, Formicidae) ant nest on selected soil chemical properties

Pedobiologia ◽  
2003 ◽  
Vol 47 (3) ◽  
pp. 205-212 ◽  
Author(s):  
Jan Frouz ◽  
Michal Holec ◽  
Jiří Kalčík
Keyword(s):  
Chemical Properties ◽  
Soil Chemical Properties ◽  
Lasius Niger ◽  
Ant Nest

Air monitoring at Camaçari Petrochemical Complex

1996 ◽  
Vol 33 (3) ◽  
pp. 9-16
Author(s):  
N. M. S. Neves
Keyword(s):  
Environmental Protection ◽  
Environmental Issues ◽  
Industrial Complex ◽  
Petrochemical Complex ◽  
Consulting Services ◽  
Biological Sludge ◽  
Potential Source ◽  
Engineering Consulting ◽  
Area Of Influence ◽  
Source Of Pollution

Camaçari Petrochemical Complex, the largest integrated industrial complex in Latin America, began its operation in 1978, in one of the most populated areas of Greater Salvador, near the cities of Camaçari and Dias D'ávila. With more than sixty industries in operation, the Complex is a potential source of pollution requiring rigorous environmental protection efforts. From its initial planning phase, in the mid 1970s, the Camaçari Petrochemical Complex ranked environmental issues as one of its highest priorities. It was the first industrial complex in Brazil to be conceived and planned with a marked interest in the environmental impacts resulting from its activities. CETREL, which began operations at the same time as the Petrochemical Complex, is a product of this concern for the environment. Built to treat the effluents and industrial residues generated by the complex, it was called the Center for Treatment of Liquid Effluent. CETREL's functions have been gradually diversifying, and today the Company performs a variety of tasks in the area of environmental protection. Besides treating the liquid effluents, CETREL operates an incinerator for hazardous liquid residues; it processes hazardous solid residues in special industrial landfills; it monitors the complex's environment and all of the complex's area of influence (the air, aquifers, sea and rivers of the region) and it provides environmental engineering consulting services to several Brazilian companies. Moreover, CETREL develops projects like the Pronatura Program, the objective of which is the afforestation of a 500-hectare area using the biological sludge produced at its own Central Treatment Station, and the Fauna Preservation Program that monitors and protects wildlife living on Company grounds.

scholarly journals ФУНКЦІОНАЛЬНО-ЕКОЛОГІЧНА ЕКСПЕРТИЗА (ФЕЕ) ГАЙСИНСЬКОГО РАЙОНУ ВІННИЦЬКОЇ ОБЛАСТІ

2020 ◽  
Vol 78 (4) ◽  
pp. 49-58
Author(s):  
O. V. Yermishev
Keyword(s):  
Focal Point ◽  
Age Groups ◽  
Paediatric Population ◽  
Integral Characteristic ◽  
Functional Health ◽  
Control Zone ◽  
Radiation Control ◽  
Ecological Pressure ◽  
The Village ◽  
Living Area

The concept of functional and ecological expertise (FEE) of radiation control regions fundamentally complements the accepted forms of dosimetric and thyroid dosimetric control. The purpose of our work was to carry out the verification of radiation dependence of functional health and dosimetric certification of settlements in Haisyn district of Vinnytsia region with the help of FEE. 186 children (91 boys, 95 girls) of different age groups living in the villages of Karbivka, Kunka and Stepashky of Haisyn district during 1993-1996 were examined with the help of FVD method by V.G. Makat.s The functional health of сhild population, which is becoming a "bioindicator" of individual health and characterizing the environmental dynamics of the compact living area, is in the focal point of FEE. The ecological criterion of FEE of a particular region of the population is systemically dependent comparison of inhibition of functional activity of the organism (parasympathetic activity (PA), vegetative equilibrium (VE) and sympathetic activity (SA). An integral characteristic of the ecological state is formed on this basis and the levels (zones) of its ecological pressure are determined. The surveyed populated areas of Karbivka village, Kunka village and the village of Stepashky in Haisyn district of Vinnytsia region belong to the IV radiation control zone. Our observations have shown that functional and vegetative health of children is ecologically dependent, and its indicators are the most sensitive bioindicators of radiation (environmental) pollution. Functional vegetative health of children in the surveyed populated areas of Haisyn district coincides with the official dosimetric certification of these areas. Monitoring of vegetative health of children should become the basis of modern functional medical examination of paediatric population and supplement state dosimetric and thyroid dosimetric certification of the populated areas.

scholarly journals Stigmergic construction and topochemical information shape ant nest architecture

2016 ◽  
Vol 113 (5) ◽  
pp. 1303-1308 ◽  
Author(s):  
Anaïs Khuong ◽  
Jacques Gautrais ◽  
Andrea Perna ◽  
Chaker Sbaï ◽  
Maud Combe ◽  
...  
Keyword(s):  
Body Size ◽  
Stochastic Model ◽  
Social Insects ◽  
Large Scale ◽  
Lasius Niger ◽  
Nest Construction ◽  
Nest Architecture ◽  
Individual Behaviors ◽  
Ant Nest ◽  
Key Features

The nests of social insects are not only impressive because of their sheer complexity but also because they are built from individuals whose work is not centrally coordinated. A key question is how groups of insects coordinate their building actions. Here, we use a combination of experimental and modeling approaches to investigate nest construction in the ant Lasius niger. We quantify the construction dynamics and the 3D structures built by ants. Then, we characterize individual behaviors and the interactions of ants with the structures they build. We show that two main interactions are involved in the coordination of building actions: (i) a stigmergic-based interaction that controls the amplification of depositions at some locations and is attributable to a pheromone added by ants to the building material; and (ii) a template-based interaction in which ants use their body size as a cue to control the height at which they start to build a roof from existing pillars. We then develop a 3D stochastic model based on these individual behaviors to analyze the effect of pheromone presence and strength on construction dynamics. We show that the model can quantitatively reproduce key features of construction dynamics, including a large-scale pattern of regularly spaced pillars, the formation and merging of caps over the pillars, and the remodeling of built structures. Finally, our model suggests that the lifetime of the pheromone is a highly influential parameter that controls the growth and form of nest architecture.

scholarly journals Вплив полтавського полігоніу твердих побутових відходів на питну воду та воднi об’єкти

2018 ◽  
pp. 210-213
Author(s):  
А. В. Молчанова
Keyword(s):  
Drinking Water ◽  
Solid Waste ◽  
Negative Impact ◽  
Waste Landfill ◽  
Wide Range ◽  
Big City ◽  
Multicomponent Nature ◽  
Solid Waste Landfills ◽  
The Village ◽  
Source Of Pollution

У Полтаві експлуатується полігон твердих побутових відходів поблизу селища Макухівка (4 км від Полтави).  Полігон не має ніяких захисних екранів, а на відстані 800 м від полігону протікає річка Коломак. Забруднені фільтратом ґрунтові води, що течуть до річки Коломак, є серйозним, постійно діючим, багатокомпонентним джерелом забруднення, вплив якого необхідно ліквідувати або мінімізувати, адже р. Коломак впадає у Ворсклу, що несе свою воду в Дніпро. Нижче за течією м. Полтави розташовані міста і села, які користуються поверхневим забором питної води. В їх числі і велике місто Кременчук. Наведено результати впливу полтавського полiгону твердих побутових відходів на питну воду та воднi об’єкти. In Poltava, a landfill for solid waste near the village Makukhovka (4 km from Poltava) is operated. The landfill has no protective screens, and at a distance of 800 m from the landfill the Kolomak River flows. The groundwater contaminated by the filtrate flowing to the Kolomak River is a serious, permanent, multicomponent source of pollution, the effect of which must be eliminated or minimized, because Kolomak flows into Vorskla, which carries its water into the Dnieper. Downstream of the Vorskla River not far from Poltava city are located cities and villages which use surface intake of drinking water. Among them there is a big city Kremenchuk. The results of the influence of the Poltava solid waste landfill on drinking water and water bodies are presented. Solid waste landfills (SWL) are dangerous sources of environmental pollution. Especially those of them that are not equipped with an anti-filtration screen and are operated without proper insulation of inert materials and without the necessary compaction of waste. Environmental and sanitary problems associated with their operation are almost the same, this is a negative impact on all components of the environment, including surface and groundwater. The complexity of this impact is also revealed in the fact that pollution has a multicomponent nature, that is, various substances of a very wide range enter into the environment from the side of solid waste landfills in various ways and the number of pollutant components is constantly increasing.

Effects of Thermal Discharge from a Coastal Power Plant on Phytoplankton in Zhanjiang Bay

2013 ◽  
Vol 316-317 ◽  
pp. 532-539
Author(s):  
Xue Ying Li ◽  
Bin Li ◽  
Xing Li Sun ◽  
Hui Li Sun
Keyword(s):  
Power Plant ◽  
Species Diversity ◽  
Spring Tide ◽  
Water Source ◽  
Thermal Discharge ◽  
Control Zone ◽  
Chl A ◽  
Maximum Value ◽  
Tidal Changes ◽  
Polluted Zone

Effects of thermal discharge from a coastal power plant on phytoplankton community were determined in subtropical Zhanjiang Bay. Two sampling transects were chosen up and down the Zhanjiang Plant in the Zhanjiang Bay, Nine stations were located along the two transects, which were divided into four zones. Monthly boat cruises were undertaken in the bay at spring up here, tide ebb slack, neap rise open and neap tide ebb slack respectively, during the period April-October 2012. Species diversity (H') showed a distinct increasing gradient from the most thermally polluted zone to the healthy zone. The more distinct gradient occurred at spring tide. Species diversity fluctuated during April-October 2011 and four sampling tide times with no visible patterns. Evenness showed indistinct gradient from the heated water source to the control zone, and fluctuated during April-October 2011 and four sampling tide times with no visible patterns. Species richness, cell count and Chl a concentration at mixed and healthy zones were significantly higher than that at heated zones, with the maximum value recorded at mixed zone, and showed seasonal and tidal changes with no obvious pattern.

scholarly journals Roman sarcophagus from Titel

Starinar ◽  
2020 ◽  
pp. 201-223
Author(s):  
Bojan Djuric
Keyword(s):  
Small Town ◽  
The South ◽  
The Past ◽  
Close Relationship ◽  
Long Time ◽  
Complex Picture ◽  
Area Of Influence ◽  
The Village

The unusual Roman sarcophagus of green volcaniclastic rock that was found in Titel, a small town in Vojvodina (SRB), and is now kept in the Muzeul National al Banatului, in Timi?oara (RO), caused considerable unease among scholars in the past as it could not be convincingly connected with any of the productions in Pannonia and Moesia Superior. Only Silvio Ferri, albeit a long time ago, correctly identified its connection with the sarcophagus production in Sirmium and with the sarcophagus of Asclepiodota in particular, made of Dardagani limestone. Sarcophagi of volcaniclastic rock have only been recorded in the region of Srem and its immediate vicinity, and were all produced in Sirmium. The material most likely arrived there from the south, quarried near the village of Rajici, ca 25 km west of Domavia, in the valley of the River Drina. The structure and decoration of the sarcophagus from Titel reveal it as essentially the type produced by the workshops at Salona using models from Prokonessos. Having said that, its decorative details reveal a more complex picture. The decoration of narrow strips of plant motifs indicates a close relationship between the sarcophagus workshops at Sirmium and the workshops active in the middle and upper valley of the River Drina with its tributaries, with the centre at Skelani (municipium Malvesiatium), which, in turn, had close ties with the Salona production. The use of the Norico-Pannonian volute of Type 6 (after Pochmarski) on the inscription panel frame of the sarcophagus from Titel shows another area of influence - the travertine sarcophagus production of Aquincum - on the appearance of the sarcophagi from Sirmium that freely use these motifs (including Type 7) to form the frames of the inscription and figural panels. Available evidence clearly shows that the sarcophagus from Titel can be attributed to the Sirmium sarcophagus production of the 3rd century, more precisely its second half.

scholarly journals The Application of Geophysical Methods in Identification of Subsurface Fractures in The Vicinity of a Poor Performance Percolation Tank

2021 ◽  
pp. 386-388
Author(s):  
Irshad S Shaikh ◽  
Dr. Aayyed Haffiyuddin Badurrudin ◽  
Dr. P. L. Salve
Keyword(s):  
Geophysical Methods ◽  
Low Frequency ◽  
Poor Performance ◽  
Early Summer ◽  
Water Users ◽  
Electromagnetic Methods ◽  
Short Period ◽  
Subsurface Fractures ◽  
Area Of Influence ◽  
The Village

Percolation tanks are constructed to conserve the rainwater in large quantities and allow more infiltration in its area of influence. Sometimes due to heavy fracture concentration/thick weathered zone, the water in percolation tank migrates fast in short period and tank becomes dry, which leads to early scarcity conditions. The village karkatta of taluka and district Latur is one such village, where water is provided by constructing two wells in the vicinity of percolation tank. The water level in the percolation tank depletes fast and the tank becomes dry in early summer. Also one cement nala bandhara was constructed in the downstream of the nala. The village is funded by UNICEF to implement MUS (Multiple Water Users) project. The area is surveyed by applying both electrical resistivity methods and low frequency electromagnetic methods in submergence of tank as well as in the downstream of percolation tank. The studies reveal that the leakages are due to thick vesicular basalt followed by fractured massive basalt. Suitable remedial measures are recommended to slow down the subsurface flow so as to improve the performance of the percolation tank.

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