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Environment

Volume XVIII |

Risk assessment of consuming aromatic hydrocarbons (The case study: Mesopotamichthys sharpeyi of Huralazim Wetland in Iran)

Abstract: Background and goal: Aromatic hydrocarbons are one of the most important environmental pollutants in the environment. These compounds, even at very low concentrations, have carcinogenic and mutagenic properties and are quantitatively and qualitatively known as compounds that have entered all parts of the environment due to human activities. This research studies the concentration of aromatic hydrocarbons in the predominantly fish (Mesopotamichthys sharpeyi) in Huralazim wetland and calculates the risk of consuming this fish by a human.
Materials and Methods: In the spring of 2018, 210 fish were collected from 4 reservoirs (7 stations). The analysis of 16 hydrocarbon compounds was carried out using the GC-FID (Shimadzn-14A) equipped with a capillary column (RTX-5).
Results: The highest concentration of oil-based hydrocarbons was in fish of station 7 (43.93 ± 2.70 mg/kg) and its lowest concentration was at station 1 (9.52 ± 3.06 mg/kg). The highest carcinogenesis incidence rate was 1.13 at station 7 and the highest mutation rate was 23.49 at station 5. The gradual carcinogenesis rate of Benz [a] pyrene was 0.00003 to 0.0029 and n in general, through Huralazim Wetland it was 0.0027. The gradual mutation risk assessment for Benz [a] pyrene was estimated as 0.055 (which ranges from 0.034 to 0.061).
Conclusion: According to the standard of mutant and carcinogenic compounds [5], it can be said that the daily consumption of fish in this wetland increases the risk of cancer and mutagen in the consumer population. Measures have to be taken to reduce the consumption of caught fish which are exposed to pollution in Huralazim Wetland, in order to minimize the risk of gradual cancer or mutagen, especially in the natives of that area.

Volume XVIII |

Post-Communist Urban Ecologies of Romanian Medium-Sized Towns

Abstract: The post-communist policies on urban restructuring were the driving force in redundant and marginalized spaces’ reproduction in all Romanian cities and towns. The paper investigates post-communist urban ecologies and derelict urban environments in Romanian small-sized municipalities, since these issues remain peripheral in the contemporary research on post-communist urban identity formation of the cities. The research was conducted in the town of Lugoj of Romania, from 2012 to 2016. It bases on empirical data provided by ethnographic analysis, quantitative approach and qualitative investigation. The results unveil a massive decline of some urban areas managed by post-communist policies on urban regeneration, with negative consequences, risk potential and derelict landscapes threatening the local urban welfare. Therefore, these marginal places request further enhancement urban policies to reduce their negative results claiming for more attention by the side of local governments.

Volume XVII |

Application of Wireless Sensor Networks in Flood Detection and River Pollution Monitoring

Abstract: In this paper, we propose a system for river monitoring based on wireless sensor network (WSN) technology. This system consists of sensor nodes that periodically measure several environmental parameters such as flow rate, water level, rainfall and pollution level. Each type of sensor node has two threshold values and measured data is compared with them at the end of the reporting interval. Based on the current situation in WSN and measured data velocity sensors can use three different frequencies of reporting. Simulation of river monitoring system is done using Matlab software tool and the results of river mainte-nance during one WSN life cycle are presented. Two possi-ble hierarchical system architectures are considered and their performance is compared. The optimal system archi-tecture for this WSN application is discussed based on the obtained results.

Volume XVII |

The impact of human activities on the environment in the Romanați Plain (Romania), during the postcommunist era

Abstract: The purpose of the article is to present the impact of human activities on natural landscapes in the Romanati Plain. With the change of the communist regime, the form of ownership of the land has changed due to the disappearance of agricultural cooperatives. This has led to land breaking and changing the way it is used. By ccalculating some human environmental pressure indicators, based on statistical data, maps were made using GIS programs, which were then compared and interpreted, thus following the evolution of anthropic environmental impact during the period 1992-2017.

Volume XVII |

Modelling intact forest landscapes habitats quality at global scales through the use of landscape ecology methods

Abstract: Modelling intact forest landscapes (IFL) quality as habitats for various species represents a crucial aspect concerning wildlife conservation. Landscape ecology provides a rice pallet of metrics suitable for quantifying complex relationships between landscapes structure and function. Our research aims to conduct an ecological diagnosis of the 2013 non-altered IFL patches as optimal habitats for both edge and interior preferring species by taking into account their spatial adjacency to altered IFL patches by fire related and non-fire related causes between 2003 and 2013 through the use of the Edge Contrast Index Metric and the Core Area Index Metric. Our results evidence that none of the world geographical forest regions suffered potential ecological dysfunctions as habitats for either interior or edge dwelling species. However, the equatorial forest zones of Africa, America and Asia are characterized by alarming low levels of habitat quality which in the future can generate severe malfunctions.