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Konkurencingumą rezervacinėse sistemose lemiantys veiksniai. Keturių žvaigždučių viešbučių, veikiančių Lietuvoje, atvejis /
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Vaikų ir tėvų su sveikata susijusios gyvenimo kokybės vertinimo skirtumų diadose monitoringas.
No full textResearch on children‘s quality of life is increasingly focused on the new design when the questionnaires are filled out not only by parents but also by children. However, there is a problem in how to evaluate the disagreement in dyadic children’s and parents’ reports. Our research was carried out with 1564 children/adolescents and parents who completed the KIDSCREEN-52 questionnaire in Lithuanian. Our paper calls into question the monitoring of dyadic disagreements as lacking conceptual perspective and addresses self-rated health as shedding systemic insights into the topic
Denitrification, nitrogen uptake, and organic matter quality undergo different seasonality in sandy and muddy sediments of a turbid estuary /
No full textThe interaction between microbial communities and benthic algae as nitrogen (N) regulators in poorly illuminated sediments is scarcely investigated in the literature. The role of sediments as sources or sinks of N was analyzed in spring and summer in sandy and muddy sediments in a turbid freshwater estuary, the Curonian Lagoon, Lithuania. Seasonality in this ecosystem is strongly marked by phytoplankton community succession with diatoms dominating in spring and cyanobacteria dominating in summer. Fluxes of dissolved gas and inorganic N and rates of denitrification of water column nitrate (Dw) and of nitrate produced by nitrification (Dn) and sedimentary features, including the macromolecular quality of organic matter (OM), were measured. Shallow/sandy sites had benthic diatoms, while at deep/muddy sites, settled pelagic microalgae were found. The OM in surface sediments was always higher at muddy than at sandy sites, and biochemical analyses revealed that at muddy sites the OM nutritional value changed seasonally. In spring, sandy sediments were net autotrophic and retained N, while muddy sediments were net heterotrophic and displayed higher rates of denitrification, mostly sustained by Dw. In summer, benthic oxygen demand increased dramatically, whereas denitrification, mostly sustained by Dn, decreased in muddy and remained unchanged in sandy sediments. The ratio between denitrification and oxygen demand was significantly lower in sandy compared with muddy sediments and in summer compared with spring. Muddy sediments displayed seasonally distinct biochemical composition with a larger fraction of lipids coinciding with cyanobacteria blooms and a seasonal switch from inorganic N sink to source. Sandy sediments had similar composition in both seasons and retained inorganic N also in summer. Nitrogen uptake by microphytobenthos at sandy sites always exceeded the amount loss via denitrification, and benthic diatoms appeared to inhibit denitrification, even in the dark and under conditions of elevated N availability. In spring, denitrification attenuated N delivery from the estuary to the coastal area by nearly 35%. In summer, denitrification was comparable (~100%) with the much lower N export from the watershed, but N loss was probably offset by large rates of N-fixation
Sea level dynamics and coastal erosion in the Baltic Sea region /
No full textThere are a large number of geophysical processes affecting sea level dynamics and coastal erosion in the Baltic Sea region. These processes operate on a large range of spatial and temporal scales and are observed in many other coastal regions worldwide. This, along with the outstanding number of long data records, makes the Baltic Sea a unique laboratory for advancing our knowledge on interactions between processes steering sea level and erosion in a climate change context. Processes contributing to sea level dynamics and coastal erosion in the Baltic Sea include the still ongoing viscoelastic response of the Earth to the last deglaciation, contributions from global and North Atlantic mean sea level changes, or contributions from wind waves affecting erosion and sediment transport along the subsiding southern Baltic Sea coast. Other examples are storm surges, seiches, or meteotsunamis which primarily contribute to sea level extremes. Such processes have undergone considerable variation and change in the past. For example, over approximately the past 50 years, the Baltic absolute (geocentric) mean sea level has risen at a rate slightly larger than the global average. In the northern parts of the Baltic Sea, due to vertical land movements, relative mean sea level has decreased. Sea level extremes are strongly linked to variability and changes in large-scale atmospheric circulation. The patterns and mechanisms contributing to erosion and accretion strongly depend on hydrodynamic conditions and their variability. For large parts of the sedimentary shores of the Baltic Sea, the wave climate and the angle at which the waves approach the nearshore region are the dominant factors, and coastline changes are highly sensitive to even small variations in these driving forces. Consequently, processes contributing to Baltic sea level dynamics and coastline change are expected to vary and to change in the future, leaving their imprint on future Baltic sea level and coastline change and variability. Because of the large number of contributing processes, their relevance for understanding global figures, and the outstanding data availability, global sea level research and research on coastline changes may greatly benefit from research undertaken in the Baltic Sea
Развитие геотуризма в трансграничном регионе на основе использования геонаследия (пример Куршской косы — объекта ЮНЕСКО).
No full textRecreation in protected areas (PAs) has received special attention amid international travel restrictions. The conflict between the conservation and economic use of these territories is increasing. This work aims to find ways to optimise and modernise environmental outreach and recreation in national parks as a type of PAs. Geotourism is viewed here as a sustainable form of tourism bridging the gap between conservation and recreation. Several objectives have been attained to fulfil this aim. The first one was the analysis of the best practices of geotourism development in PAs; the second one was measuring the resource potential for diversifying ecotourism events in PAs; the third objective was designing an algorithm for creating a geological heritage-focused eco-trail, an innovative recreation product aimed at environmental education and community outreach. The authors view the methodology for geo-tour design as an example of heritage preservation and propose a new tourist trail — the Geological and Geomorphological Chronicle of the Baltic Sea. This tour acquaints sightseers with the nature of the Curonian Spit National Park, a unique geological and geomorphological feature whose landscapes are a product of centuries-long human-nature interactions. Twenty years ago, in 2000, the conservation area was listed by UNESCO as a place of considerable natural significance. The field studies were carried out as part of the international project Ecotour4Natur: Ecotourism as a Tool for the Preservation of Natural and Cultural Heritage within the Lithuania- Russia Cross-border Cooperation Programme 2014—2020. The developed algorithm for eco-trail design may benefit other national parks as well
Ports digitalization level evaluation /
No full textCurrently, seaports are actively searching for methods and ways to improve their operational efficiency. Digitalization is considered as one of the main directions of current ports’ development. Ports’ digitalization levels are varied and may depend on different factors, including port size, traditions, turnover and handled cargo type, etc. Ports often face decision-making challenges related to assessment of their digitization level and choice of development directions. The article aims to develop a methodology to evaluate ports’ digitalization level. A marketing research tool was used to collect the data needed for the analysis. A mathematical model allowing simulations is proposed and a case study of 30 ports located in the Baltic, North and Mediterranean Seas regions is explored. Based on conducted calculations, a ranking of analysed ports considering their digitalization level was created. The ports were compared within groups of small, medium-sized and large ports. It was estimated that the digitalization level in small and medium-sized ports is about 30% lower than the level of large seaports. The research results may be of interest to seaports striving to assess their level of digitalization and choose the best digital improvement solutions
Change leadership at local self-government in the context of COVID-19: the case study of Lithuanian municipal administration /
No full textContemporary challenges require public sector institutions to adapt the changing environment and to ensure an appropriate internal management processes, including the leadership. Leaders are expected to inspire and create a vision, and advocate for that vision throughout the periods of growth, disruption or uncertainty. In recent years of pandemic the importance of change leadership increases in local self-government. The aim of this article is to examine the change leadership in Lithuanian municipal administration in the context of the COVID-19 pandemic and on the basis of research results to form the assumptions of strengthening of change leadership in local self-government organisations. Analysis of theoretical aspects revealed main features of change leadership and its connection with transformational leadership in the context of public administration institutions focusing on the COVID-19 pandemic. The scientific methods such as document analysis and qualitative semi-structured interview have been used for the empirical research, based on the case study of selected Lithuanian municipal administration as the field of research. The research results revealed that during the period of changes assumed by the COVID-19 pandemic the managers of Lithuanian municipal administration act like leaders of change, resolving problems in teams and flexibly reacting to current issues
