Search results for "balti"
showing 10 items of 784 documents
Latvijas Vēstures Institūta Žurnāls. 2014, Nr. 2 (91)
2014
Valsts kultūrkapitāla fonds
The biocenotic value of Slitere National Park, Latvia, with special reference to inter-dune mires
2019
Inter-dune wetlands in Europe harbour many Red List species because they are very nutrient-poor ecosystems. Most of these wetlands are geologically very young and no or little peat formation has occurred. In Slītere National Park the numerous inter-dune wetlands are relatively old, up to 4500 years old, and most mire communities are peat forming and they are well preserved. However, the hydrological systems that have conserved the mires are largely unknown. In the present study we analysed 128 vegetation relevées of dune mires in order to assess the variation in ecological mire types. We also carried out several short-time studies to get an insight into the peat development and hydrological…
Baltic Sea in Estonian and Finnish media : discussed topics and stakeholders
2016
In this paper the stakeholders and most discussed topics of Baltic Sea in the media are examined. Baltic Sea is a fragile ecosystem that provides variety of services to the locals. Not only the locals hold the stake, but also industries and governments. This paper aims to present the complexity of stakeholder network and contradicting interests. Altogether 104 newspaper articles from Estonian and Finnish media on Baltic Sea were used as the data source and the concerning topics, themes and stakeholders were surveyed. The qualitative data was inserted to the textual analysis software QDA Miner 4 Lite. Three main topics were named according to the concept of three pillars of sustainability- e…
Solar PAR and UVR modify the community composition and photosynthetic activity of sea ice algae
2015
The effects of increased photosynthetically active radiation (PAR) and ultraviolet radiation (UVR) on species diversity, biomass and photosynthetic activity were studied in fast ice algal communities. The experimental set-up consisted of nine 1.44 m(2) squares with three treatments: untreated with natural snow cover (UNT), snow-free (PAR + UVR) and snow-free ice covered with a UV screen (PAR). The total algal biomass, dominated by diatoms and dinoflagellates, increased in all treatments during the experiment. However, the smaller biomass growth in the top 10-cm layer of the PAR + UVR treatment compared with the PAR treatment indicated the negative effect of UVR. Scrippsiella complex (mainly…
Dynamics of particulate major and trace elements in the lower reaches of the Daugava River and adjacent area of the Gulf of Riga (Baltic Sea).
2004
Suspended particulate matter (SPM) was collected in the freshwater-seawater mixing zone in the lower reaches of the Daugava River (Latvia) and adjacent marine area, during five cruises in 1998-2001. The study focused on biogeochemical phase exchange processes. SPM in the freshwater was found to be mainly allochthonous with a high content of organic matter, Mn and sorbed phosphate. Property-salinity plots suggested flocculation of humic-Fe complexes across the salinity gradient. The variability of sorbed phosphate was related to particulate Fe, although no dependence on pH and ionic strength was observed. The Mn contents of SPM mainly follow conservative mixing, but there are also indication…
Eiropas aizsardzības stiprināšana un Baltijas valstu izaicinājumi
2018
Kopējās drošības un aizsardzības politika ir kļuvusi par vienu no lielākajām prioritātēm un kritiski apskatītāko diskusijas tematu Eiropas Savienībā, kas automātiski izveido jaunu platformu attīstībai valstīm, kuras ir vistuvāk ES ārējām robežām. Maģistra darba galvenais izvirzītais mērķis ir identificēt Eiropas Savienības aizsardzības un drošības sektora jaunās iespējas un piedāvātās metodes, kas tiks aktualizētas un īstenotas Daudzgadu finanšu shēmas (Multiannual Financial Framework) ietvaros no 2021. –2027.gadam, un piedāvāt ieteikumus un risinājumus, plānojot to iespējamo izmantošanu un pielietojumu Baltijas valstīs. Pētījuma rezultāti parāda, ka, pirmkārt, Eiropas Savienības valstis ir…
Bioaccumulation of hepatotoxins : A considerable risk in the Latvian environment
2014
Abstract The Gulf of Riga, river Daugava and several interconnected lakes around the City of Riga, Latvia, form a dynamic brackish-freshwater system favouring occurrence of toxic cyanobacteria. We examined bioaccumulation of microcystins and nodularin-R in aquatic organisms in Latvian lakes, the Gulf of Riga and west coast of open Baltic Sea in 2002–2007. The freshwater unionids accumulated toxins efficiently, followed by snails. In contrast, Dreissena polymorpha and most lake fishes (except roach) accumulated much less hepatotoxins. Significant nodularin-R concentrations were detected also in marine clams and flounders. No transfer of nodularin-R and microcystins between lake and brackish …
A statistical model for predicting the inter-annual variability of birch pollen abundance in Northern and North-Eastern Europe
2018
The paper suggests a methodology for predicting next-year seasonal pollen index (SPI, a sum of daily-mean pollen concentrations) over large regions and demonstrates its performance for birch in Northern and North-Eastern Europe. A statistical model is constructed using meteorological, geophysical and biological characteristics of the previous year). A cluster analysis of multi-annual data of European Aeroallergen Network (EAN) revealed several large regions in Europe, where the observed SPI exhibits similar patterns of the multi-annual variability. We built the model for the northern cluster of stations, which covers Finland, Sweden, Baltic States, part of Belarus, and, probably, Russia and…
Humanities and Social Sciences Latvia. Vol. 25, N. 1 (Spring-Summer 2017)
2017
Foreign direct investment attraction in the Baltic States
2014
This paper considers the importance of macroeconomic factors as well as investment climate for foreign direct invest ment attraction in the Baltic states. It reviews some of the indicators for measuring the investment climate and their usefulness as indicators of strength of FDI attraction and uses the results of econometric analysis to consider relative importance of various macroeconomic factors. The results suggest that perceptions of corruption and fiscal policy are some of the more important drivers of FDI attraction. The paper also considers several measures that could improve foreign direct investment attraction in the Baltic States such as expanding the protection of property right…