Long-term air pollution trend analysis in the South-eastern Baltic region, 1981–2017

Abstract The Zedmar culture is linked with the subneolithic circle of the South-Eastern Baltic region. So far, excavations have been carried out only on seven archaeological sites. Nonetheless, there are quite a lot of radiocarbon measurements. Most of them refer to the stratigraphic contexts. This allows to integrate all of the data into statistical models. With these, it is possible to query some statements about the Zedmar culture origin and its duration. At least as long as placing the Zedmar culture into an absolute timescale may offer any solution to those issues. The idea that radiocarbon dates could provide solutions or even final answers to some arguable questions in prehistorical studies was dropped, as soon as it became clear that in the whole approach the key role is played by calibration methods and the general variability of sampled material. However – thanks to including Bayesian analysis, a better understanding of dated materials and more complex examination of received results – it has been asserted again.

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The Use of Trajectory Cluster Analysis to Evaluate the Long-Range Transport of Black Carbon Aerosol in the South-Eastern Baltic Region

Advances in Meteorology ◽

10.1155/2014/137694 ◽

2014 ◽

Vol 2014 ◽

pp. 1-11 ◽

Cited By ~ 16

Author(s):

Steigvilė Byčenkienė ◽

Vadimas Dudoitis ◽

Vidmantas Ulevicius

Keyword(s):

Cluster Analysis ◽

Black Carbon ◽

Strong Impact ◽

Baltic Region ◽

The South ◽

Air Masses ◽

South Eastern ◽

Black Carbon Aerosol ◽

Concentration Weighted Trajectories ◽

Eastern Baltic

Trajectory cluster analysis and source-receptor models (the potential source contribution function (PSCF), concentration weighted trajectories (CWT), and trajectory source apportionment (TSA)) were applied to investigate the source-receptor relationship for the aerosol black carbon (BC) measured at the coastal site (Preila, 55.55°N, 21.04°E) during 2013. The main sources and paths of advection to the south-eastern Baltic region and its relation to black carbon concentration were identified. The 72 h backward trajectories of air masses arriving at Preila from January to December 2013 were determined and were categorized by clustering them into six clusters. Subsequently, BC levels at Preila associated with each air mass cluster during this period were analyzed. The PSCF and CWT analysis shows that, on high BC concentration days, the air masses commonly originated and passed over southern regions of Europe before arriving at Preila in winter, while a strong impact of wildfires was observed in spring.

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A survey of Lepturinae Latreille, 1802 (Coleoptera: Cerambycidae) of the south-eastern Baltic region (Lithuania and the Kaliningrad Region)

Biologija ◽

10.6001/biologija.v66i4.4366 ◽

2020 ◽

Vol 66 (4) ◽

Author(s):

Vytautas Tamutis ◽

Vitalii Alekseev

Keyword(s):

Baltic Region ◽

The South ◽

South Eastern ◽

Kaliningrad Region ◽

Eastern Baltic ◽

Distribution Frequency

The paper presents the first review of the composition and distribution of the species Lepturinae Latreille, 1802 subfamily (Coleoptera: Cerambycidae) in the south-eastern Baltic region. A total of more than 3,000 records have been analyzed and more than 4,600 specimens collected since 1888 have been examined. The subfamily is confirmed to be represented by four tribes, 26 genera, and 38 species in the region. Previous records (published notifications) of seven species – Alosterna ingrica (Baeckmann), Brachyta interrogationis russica (Herbst), Euracmaeops marginatus (F.), Gnathacmaeops pratensis (Laichart.), Pachytodes erraticus (Dalman), Rhagium bifasciatum F. and Stictoleptura v. variicornis (Dalman) – were not confirmed in the region. The information on the distribution, frequency, and some features of ecology and zoogeography of 51 species found and expected to be found in the region is confirmed and detailed in the paper. Local temporal and geographical distributions of 36 species are mapped.

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