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Publicatii proprii

Long-term dynamics of zooplankton in the Matita and Merhei shallow lakes (the Danube Delta, Romania). 1. Diversity and abundance

The present paper presents significant changes occurred in the multi-annual dynamics of zooplankton diversity and abundance (1980-2007), under the pressure of human-induced eutrophication in two shallow lakes specific for the Danube Delta. Zooplankton community from lakes Matita and Merhei was characterized by high species richness but low abundance values until 1981, in ecological conditions unaffected by eutrophication. For the next ten years,

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Comparing the efficiency of transportation routes and corridors – Statistical-mathematical model

In the broader context of the importance granted to accessibility by the European spatial planning policies, comparing the effi ciency of European and national transportation routes and corridors constitutes an issue of particular relevance for Romania. In order to resolve it, this paper proposes a methodology based on potential accessibility, determined by the total population served, and the effi ciency of the path, by analogy with the least squares

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Systemic theory applied to ecology, geography and spatial planning. Theoretical and methodological developments

Starting from a critical comparative analysis of how the systemic conception is applied in geography, ecology and spatial planning, with a particular focus on the new concept of 'territorial system', the book demonstrates the hypothesis according to which the transfer of statistical methods currently used to study ecological systems toward the analysis of territorial systems is not only possible, but also beneficial based on theoretical foundations

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Geostatistical analysis of time series: an exploratory analysis of climatologic and ecological data using a spatial instrument

The extensive use of the Geographical Information Systems, but also of their extensions, in fields that do not necessary connect to geography, but allow for the implementation of methodologies based on the analysis of spatially referenced data, had resulted into new applications and methodological approaches to answer specific research questions. This paper proposes such an extension from the real space define by longitude and latitude to a virtual

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Higher education post-Bologna: required changes, instruments and ethical aspects

In 1999 Romania became part of the Bologna process, focused on the European Credit Transfer and Accumulation System, design to increase the compatibility of European universities, ensuring the mobility of students and professors in the context of re-orienting education to the formation of competences continuously adapted to market requirements. This model draws the new education system closer to American education. The paper analyzes the importance

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Assessing the vulnerability to climate change in the Romanian part of Tisza river basin

Clime change represents an important issue for the scientific community regardless of the specific field of study due to the environmental effects and impacts on the economy (especially agriculture) and human communities. The environmental impacts include the loss of biodiversity (species and ecosystems), while agricultural impacts include the exposure to heat, changes of the precipitation regime, and dispersion of diseases and pests. The assessment

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Maternal smoking and Down syndrome by maternal race

Down’s syndrome represents an important public health issue in the United States (US). The purpose of this analysis was to investigate the relationship between maternal smoking and Down syndrome, among white and black women separately using birth certificate data. After adjusting for alcohol consumption and gestational age, the effect of smoking on Down syndrome appeared to differ among black and white women. There was a reduced risk for Down syndrome

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Comparing the efficiency of transportation routes and corridors – Statistical-mathematical model

In the broader context of the importance granted to accessibility by the European spatial planning policies, comparing the efficiency of European and national transportation routes and corridors constitutes an issue of particular relevance for Romania. In order to resolve it, this paper proposes a methodology based on potential accessibility, determined by the total population served, and the efficiency of the path, by analogy with the least squares

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GIS assessment of development gaps among Romanian administrative units

A new set of indices for monitoring the effects of implementing new regional development policies of the European Union, as well as other sectoral policies with territorial effects, resulted into the creation of new flexible systems, able to increase the administrative capacity to access structural and cohesion funds. The novelty of this study consists of the original methodology embedding mathematical methods (i.e., the ELECTRE and the index of

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Diversity of arthropod communities as an indicator of changes produced by the utilization of silvicultural techniques

The dynamics of forest arthropod communities can be completely understood only when based on their trophic connections. Given their importance in detritic food chains with their influence on the rate of decomposing organic matter and the dynamics of nutrients, terrestrial arthropods from litter and soil are useful in monitoring changes in environmental conditions in forest ecosystems. Due to their flexible diet they cannot be appropriately assigned

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