scholarly journals BIOMONITORING OF ATHMOSPHERE AIR POLLUTION IN THE FOREST ECOSYSTEMS AND ECO-TONE ZONE

AGROFOR ◽  
2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Adam BEGU
Keyword(s):  
Air Pollution ◽  
Forest Ecosystems ◽  
Current Level ◽  
Annual Average ◽  
Republic Of Moldova ◽  
Clean Air ◽  
The Republic ◽  
Harmful Effects

Within our research, the air quality of 62 forest ecosystems from Republic ofMoldova was assessed, taking into consideration the lichens indicator speciesspecific diversity, abundance and toxitolerance. It was established that theMoldavian forest ecosystems do not contain reserves concerning critical loads forSO2 pollution, the annual average for the vegetation season for dendrologicalspecies being 0,02 mg/m3 air, and for communities of lichens and cyanobacteria,organisms sensitive to pollution, represented only 0,01 mg/m3. Lichen indicationdemonstrated that the current level of pollution is between 0,05 and 0,5 mg/m3 SO2air, thus long-term harmful effects are manifested in all 62 studied forestecosystems and the ecosystems from the eco-tone zone. We believe that for theRepublic of Moldova lichen, indicator species can provide a scale of 6 levels: 5levels characterized by species with different toxitolerance degree and the last stepbeing an area in which lichens are completely missing, thus the most polluted area.Within the Republic of Moldova territory, there were reported 3 forest ecosystemsin which the air is evaluated as clean air, 11- low polluted air, 31- moderatepolluted air, 12- polluted air, 3- high polluted air and those with critical polluted airwas missing.

scholarly journals The seasonal dynamics of phytoplankton and water quality in the Prut River lower sector

2021 ◽  
Author(s):  
Laurenţia Ungureanu ◽  
◽  
Daria Tumanova ◽  
Grigore Ungureanu ◽  
◽  
...  
Keyword(s):  
Water Quality ◽  
Seasonal Dynamics ◽  
Phytoplankton Composition ◽  
Republic Of Moldova ◽  
Qualitative And Quantitative ◽  
The Republic ◽  
Quantitative Indicators ◽  
Prut River

The article presents the results on qualitative and quantitative indicators of phytoplankton of the Prut River lower sector within the Republic of Moldova in 2018-2020. In phytoplankton compositions 72 species were identified. Seasonal and long-term patterns of phytoplankton development have been established in Prut River lower sector. The numbers of phytoplankton changed within the limits 1,06 to 20,32 mln. cell/l, with biomass 1,23-21,64 g/m3. The values of saprobic indexes, estimated on the basis of species-indicators (52 species) from phytoplankton composition, which are in proportion of 58% typically β-mezosaprobic, confirm the following: the water quality of lower Prut River sector in the period 2018-2020 was satisfactory for the development of phytoplankton and was attributed mainly to II-III (good-moderately polluted) quality classes.

Impactul activităților umane asupra stării peisajelor geografice din bazinul hidografic Cogâlnic în anii 2004-2014

2020 ◽  
Author(s):  
Nicolae Boboc ◽  
◽  
Valentina Munteanu ◽  
Keyword(s):  
Statistical Data ◽  
Environmental Changes ◽  
Spatial Dynamics ◽  
Anthropogenic Pressure ◽  
Human Pressure ◽  
Republic Of Moldova ◽  
Temporal And Spatial ◽  
The Republic ◽  
High Degree

The high degree of land use in the Republic of Moldova as a whole, and the Cogâlnic river basin in particular, imposes the need to assess the quality of the environment and the characteristics of the anthropogenic pressure on the landscapes in temporal and spatial dynamics and to identifying an adequate of measure system for the purpose to maintain/restore the optimal structure and functioning of landscape systems. Based from the Land Cadastre on data, statistical data of population censuses, bibliographic and cartographic sources, a system, was appraised a system of indicators(of naturalness, of artificialization of landscapes, environmental changes) and quantified human pressure on the environment through agriculture and anthropogenic pressure on forest landscapes from the Cogâlnic catchment area. The values of the indices and the human pressure on the landscapes were processed using GIS techniques and elaborated cartographic models.

Reteaua de licee: cum o optimizam din punct de vedere numeric si în profil teritorial

2019 ◽  
Author(s):  
Serafim Florea ◽  
Keyword(s):  
High School ◽  
High Schools ◽  
Negative Impact ◽  
Boarding Schools ◽  
Qualified Teachers ◽  
Republic Of Moldova ◽  
School Network ◽  
New Type ◽  
The Republic

There are over 300 high schools in the Republic of Moldova, most of which do not have 10-12th parallel classes, many of which also lead to the lack of qualified teachers in some subjects, which has a negative impact on the quality of students education. The optimization of the high school network can be achieved by keeping only about 100 of their existing number, planning them in new type institutions: district high-schools, boarding schools and mixed high schools of both these categories.

scholarly journals Anthropogenic Effects on Forest Ecosystems at Various Spatio-Temporal Scales

2002 ◽  
Vol 2 ◽  
pp. 827-841 ◽  
Author(s):  
Michael Bredemeier
Keyword(s):  
Air Pollution ◽  
Long Range ◽  
Acid Deposition ◽  
Soil Degradation ◽  
Forest Ecosystems ◽  
Global Scale ◽  
Soil Productivity ◽  
Long Term Effects ◽  
The World

The focus in this review of long-term effects on forest ecosystems is on human impact. As a classification of this differentiated and complex matter, three domains of long-term effects with different scales in space and time are distinguished: 1- Exploitation and conversion history of forests in areas of extended human settlement 2- Long-range air pollution and acid deposition in industrialized regions 3- Current global loss of forests and soil degradation.There is an evident link between the first and the third point in the list. Cultivation of primary forestland — with its tremendous effects on land cover — took place in Europe many centuries ago and continued for centuries. Deforestation today is a phenomenon predominantly observed in the developing countries, yet it threatens biotic and soil resources on a global scale. Acidification of forest soils caused by long-range air pollution from anthropogenic emission sources is a regional to continental problem in industrialized parts of the world. As a result of emission reduction legislation, atmospheric acid deposition is currently on the retreat in the richer industrialized regions (e.g., Europe, U.S., Japan); however, because many other regions of the world are at present rapidly developing their polluting industries (e.g., China and India), “acid rain” will most probably remain a serious ecological problem on regional scales. It is believed to have caused considerable destabilization of forest ecosystems, adding to the strong structural and biogeochemical impacts resulting from exploitation history.Deforestation and soil degradation cause the most pressing ecological problems for the time being, at least on the global scale. In many of those regions where loss of forests and soils is now high, it may be extremely difficult or impossible to restore forest ecosystems and soil productivity. Moreover, the driving forces, which are predominantly of a demographic and socioeconomic nature, do not yet seem to be lessening in strength. It can only be hoped that a wise policy of international cooperation and shared aims can cope with this problem in the future.

Critical cases of maternal mortality - a severe obstetrical complication, reflecting the quality of medical services provided

2017 ◽  
pp. 27-30
Author(s):  
Yu.V. Dondyuk ◽  
Keyword(s):  
Maternal Death ◽  
Maternal Morbidity ◽  
Obstetric Care ◽  
Near Miss ◽  
Maternal Near Miss ◽  
Maternal Deaths ◽  
Republic Of Moldova ◽  
Mortality Index ◽  
The Republic

Maternal near miss and maternal death audit has become an esssential process in the context of obstetric care in both developed and developing countries. The objective: of the present study was to assess the quality of medical services provided within the multilevel regionalized Perinatal Health System in the Republic of Moldova, by identifying the inconsistencies with existing standards of medical care, in cases of severe obstetric complications and maternal deaths. Materials and methods. All cases of maternal near miss cases and maternal deaths recorded in the Secondary and Tertiary Perinatal Centers of the Republic of Moldova during the period 2009–2014 were analyzed retrospectively. To assess the quality of obstetric care, the following indices have been calculated: maternal near miss/ maternal deaths ratio; the mortality index for each obstetric condition/ complication. Results. During a period of 6 years, in 11 Secondary and Tertiary Perinatal Centers of the Republic of Moldova there were registered 154 651 births, 2881 cases of maternal near miss and 21 maternal deaths. The General Mortality index was 0.72%, and the Mortality Index by direct obstetric morbidity was 0.48%. 92.86% of maternal deaths through direct obstetric causes were avoidable, and the proportion of near miss cases with substandard care was 81.85%. The most frequent gaps (82.48%) were caused by human factors, such as insufficient team work, communication deficiency, lack of knowledge and clinical skills necessary to properly recognize and treat critical obstetric patients, delay and errors in diagnosis and treatment, non-compliance with clinical protocols. Conclusions. The excessively high proportion of avoidable factors highlighted in the study is alarming and implies the need for more extensive activities and the development of strategies focused on ensuring the presence of qualified medical workers in medical institutions, which will allow the provision of qualitative care and safety for patients in the Republic of Moldova, reducing maternal morbidity and mortality. Key words: severe maternal morbidity, maternal near miss, maternal death, maternal mortality.

scholarly journals Local NO2 concentrations and asthma among over-50s in Ireland: A microdata analysis

2020 ◽  
Author(s):  
Philip Carthy ◽  
Aonghus Ó Domhnaill ◽  
Margaret O’Mahony ◽  
Anne Nolan ◽  
Frank Moriarty ◽  
...  
Keyword(s):  
Older Adults ◽  
Air Pollution ◽  
Self Report ◽  
Model Specification ◽  
Asthma Prevalence ◽  
Marginal Effect ◽  
Annual Average ◽  
Individual Level ◽  
Percentage Points ◽  
The Republic

Abstract Background Links between air pollution and asthma are less well established for older adults than some younger groups. Nitrogen dioxide (NO2) concentrations are widely used as an indicator of transport-related air pollution, and some literature suggests NO2 may directly affect asthma. Methods This study used data on 8162 adults >50 years old in the Republic of Ireland to model associations between estimated annual outdoor concentration of NO2 and the probability of having asthma. Individual-level geo-coded survey data from The Irish Longitudinal Study on Ageing (TILDA) were linked to model-based estimates of annual average NO2 at 50 m resolution. Asthma was identified using two methods: self-reported diagnoses and respondents’ use of medications related to obstructive airway diseases. Logistic regressions were used to model the relationships. Results NO2 concentrations were positively associated with the probability of asthma [marginal effect (ME) per 1 ppb of airborne NO2 = 0.24 percentage points asthma self-report, 95% confidence interval (CI) 0.06–0.42, mean asthma prevalence 0.09; for use of relevant medications ME = 0.21 percentage points, 95% CI 0.049–0.37, mean prevalence 0.069]. Results were robust to varying model specification and time period. Respondents in the top fifth percentile of NO2 exposure had a larger effect size but also greater standard error (ME = 2.4 percentage points asthma self-report, 95% CI −0. 49 to 5.3). Conclusions Associations between local air pollution and asthma among older adults were found at relatively low concentrations. To illustrate this, the marginal effect of an increase in annual average NO2 concentration from sample minimum to median (2.5 ppb) represented about 7–8% of the sample average prevalence of asthma.

scholarly journals Air Pollution and Watershed Research in the Central Sierra Nevada of California: Nitrogen and Ozone

2007 ◽  
Vol 7 ◽  
pp. 206-221 ◽  
Author(s):  
Carolyn Hunsaker ◽  
Andrzej Bytnerowicz ◽  
Jessica Auman ◽  
Ricardo Cisneros
Keyword(s):  
Air Pollution ◽  
Sierra Nevada ◽  
Spatial Data ◽  
Air Pollutants ◽  
Forest Ecosystems ◽  
Management Strategies ◽  
Forest Service ◽  
Passive Samplers ◽  
Department Of Agriculture ◽  
Clean Air

Maintaining healthy forests is the major objective for the Forest Service scientists and managers working for the U.S. Department of Agriculture. Air pollution, specifically ozone (O3) and nitrogenous (N) air pollutants, may severely affect the health of forest ecosystems in the western U.S. Thus, the monitoring of air pollution concentration and deposition levels, as well as studies focused on understanding effects mechanisms, are essential for evaluation of risks associated with their presence. Such information is essential for development of proper management strategies for maintaining clean air, clean water, and healthy ecosystems on land managed by the Forest Service. We report on two years of research in the central Sierra Nevada of California, a semi-arid forest at elevations of 1100–2700 m. Information on O3and N air pollutants is obtained from a network of 18 passive samplers. We relate the atmospheric N concentration to N concentrations in streams, shallow soil water, and bulk deposition collectors within the Kings River Experimental Watershed. This watershed also contains an intensive site that is part of a recent Forest Service effort to calculate critical loads for N, sulfur, and acidity to forest ecosystems. The passive sampler design allows for extensive spatial measurements while the watershed experiment provides intensive spatial data for future analysis of ecosystem processes.

scholarly journals The Effects of Air Pollution on COVID-19 Infection and Mortality—A Review on Recent Evidence

2020 ◽  
Vol 8 ◽  
Author(s):  
Nurshad Ali ◽  
Farjana Islam
Keyword(s):  
Public Health ◽  
Air Pollution ◽  
Nitrogen Dioxide ◽  
Air Pollutants ◽  
Health Concern ◽  
Public Health Concern ◽  
Short Term ◽  
The World ◽  
Harmful Effects

The outbreak of COVID-19 has created a serious public health concern worldwide. Although, most of the regions around the globe have been affected by COVID-19 infections; some regions are more badly affected in terms of infections and fatality rates than others. The exact reasons for such variations are not clear yet. This review discussed the possible effects of air pollution on COVID-19 infections and mortality based on some recent evidence. The findings of most studies reviewed here demonstrate that both short-term and long-term exposure to air pollution especially PM2.5 and nitrogen dioxide (NO2) may contribute significantly to higher rates of COVID-19 infections and mortalities with a lesser extent also PM10. A significant correlation has been found between air pollution and COVID-19 infections and mortality in some countries in the world. The available data also indicate that exposure to air pollution may influence COVID-19 transmission. Moreover, exposure to air pollution may increase vulnerability and have harmful effects on the prognosis of patients affected by COVID-19 infections. Further research should be conducted considering some potential confounders such as age and pre-existing medical conditions along with exposure to NO2, PM2.5 and other air pollutants to confirm their detrimental effects on mortalities from COVID-19.

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