Comparison of neophyte communities of Robinia pseudoacacia L. and Acer negundo L. in the eastern Baltic Sea region cities of Riga and Kaunas

2015 ◽  
Vol 14 (4) ◽  
pp. 826-834 ◽  
Author(s):  
Vitas Marozas ◽  
Gunta Cekstere ◽  
Maris Laivins ◽  
Lina Straigyte
Keyword(s):  
Baltic Sea ◽  
Robinia Pseudoacacia ◽  
Acer Negundo ◽  
Baltic Sea Region ◽  
Robinia Pseudoacacia L ◽  
Eastern Baltic

scholarly journals Drought identification in the eastern Baltic region using NDVI

2017 ◽  
Vol 8 (3) ◽  
pp. 627-637 ◽  
Author(s):  
Egidijus Rimkus ◽  
Edvinas Stonevicius ◽  
Justinas Kilpys ◽  
Viktorija Maciulyte ◽  
Donatas Valiukas
Keyword(s):  
Baltic Sea ◽  
Arable Land ◽  
Coniferous Forest ◽  
Northwestern Part ◽  
Drought Effect ◽  
Vegetation Season ◽  
Vegetation Condition ◽  
Baltic Sea Region ◽  
The Impact ◽  
Eastern Baltic

Abstract. Droughts are phenomena that affect large areas. Remote sensing data covering large territories can be used to assess the impact and extent of droughts. Drought effect on vegetation was determined using the normalized difference vegetation index (NDVI) and Vegetation Condition Index (VCI) in the eastern Baltic Sea region located between 53–60° N and 20–30° E. The effect of precipitation deficit on vegetation in arable land and broadleaved and coniferous forest was analysed using the Standardized Precipitation Index (SPI) calculated for 1- to 9-month timescales. Vegetation has strong seasonality in the analysed area. The beginning and the end of the vegetation season depends on the distance from the Baltic Sea, which affects temperature and precipitation patterns. The vegetation season in the southeastern part of the region is 5–6 weeks longer than in the northwestern part. The early spring air temperature, snowmelt water storage in the soil and precipitation have the largest influence on the NDVI values in the first half of the active growing season. Precipitation deficit in the first part of the vegetation season only has a significant impact on the vegetation on arable land. The vegetation in the forests is less sensitive to the moisture deficit. Correlation between VCI and the same month SPI1 is usually negative in the study area. It means that wetter conditions lead to lower VCI values, while the correlation is usually positive between the VCI and the SPI of the previous month. With a longer SPI scale the correlation gradually shifts towards the positive coefficients. The positive correlation between 3- and 6-month SPI and VCI was observed on the arable land and in both types of forests in the second half of vegetation season. The precipitation deficit is only one of the vegetation condition drivers and NDVI cannot be used universally to identify droughts, but it may be applied to better assess the effect of droughts on vegetation in the eastern Baltic Sea region.

scholarly journals Atmospheric teleconnections between the Arctic and the eastern Baltic Sea regions

2017 ◽  
Vol 8 (4) ◽  
pp. 1019-1030 ◽  
Author(s):  
Liisi Jakobson ◽  
Erko Jakobson ◽  
Piia Post ◽  
Jaak Jaagus
Keyword(s):  
Baltic Sea ◽  
Reanalysis Data ◽  
Specific Humidity ◽  
The Arctic ◽  
Positive Temperature ◽  
Strong Negative Correlation ◽  
Mild Winter ◽  
Baltic Sea Region ◽  
The Arctic Oscillation ◽  
Eastern Baltic

Abstract. The teleconnections between meteorological parameters of the Arctic and the eastern Baltic Sea regions were analysed based on the NCEP-CFSR and ERA-Interim reanalysis data for 1979–2015. The eastern Baltic Sea region was characterised by meteorological values at a testing point (TP) in southern Estonia (58° N, 26° E). Temperature at the 1000 hPa level at the TP have a strong negative correlation with the Greenland sector (the region between 55–80° N and 20–80° W) during all seasons except summer. Significant teleconnections are present in temperature profiles from 1000 to 500 hPa. The strongest teleconnections between the same parameter at the eastern Baltic Sea region and the Arctic are found in winter, but they are clearly affected by the Arctic Oscillation (AO) index. After removal of the AO index variability, correlations in winter were below ±0.5, while in other seasons there remained regions with strong (|R| > 0.5, p < 0.002) correlations. Strong correlations (|R| > 0.5) are also present between different climate variables (sea-level pressure, specific humidity, wind speed) at the TP and different regions of the Arctic. These teleconnections cannot be explained solely with the variability of circulation indices. The positive temperature anomaly of mild winter at the Greenland sector shifts towards east during the next seasons, reaching the Baltic Sea region in summer. This evolution is present at 60 and 65° N but is missing at higher latitudes. The most permanent lagged correlations in 1000 hPa temperature reveal that the temperature in summer at the TP is strongly predestined by temperature in the Greenland sector in the previous spring and winter.

scholarly journals Horsemeat in the culinary traditions of the Mishär Tatar diaspora in the eastern Baltic Sea region: cultural and historical aspects

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Ingvar Svanberg ◽  
Sabira Ståhlberg ◽  
Renat Bekkin
Keyword(s):  
Twentieth Century ◽  
Baltic Sea ◽  
Domestic Consumption ◽  
Food Stores ◽  
Historical Aspects ◽  
Saint Petersburg ◽  
Baltic Sea Region ◽  
Culinary Traditions ◽  
Sea Area ◽  
Eastern Baltic

Abstract Hippophagy is still unthinkable in many European countries, but in the Mishär Tatar culinary tradition, horsemeat products play an important role. Part of the Mishär Tatars, originally from Nizhny Novgorod province (Russia), migrated to the eastern Baltic Sea region in the nineteenth and early twentieth century. They continued to slaughter horses and eat horseflesh, despite being opposed and stigmatized by the majority in their new surroundings. Today, home slaughtering has disappeared, and the tradition focuses mainly on sausages prepared for domestic consumption or bought in food stores. Horsemeat is today considered a delicacy and an important aspect of commensality among Mishär Tatars. There is a small and persistent market for horseflesh products in the eastern Baltic Sea area, mainly Finland, Saint Petersburg (Russia), Estonia, and Latvia. Hippophagy continues to play an important role for the diaspora Mishär Tatar identity and the preservation of traditional narrative and culture, and so far it has resisted all adaptation attempts in the majority societies, where horsemeat is frowned upon.

RESEARCH OF COMPETITIVE ENVIRONMENT OF KLAIPĖDA SEAPORT COMPARING TO OTHER SEAPORTS IN THE EASTERN BALTIC SEA REGION

Transport ◽  
2012 ◽  
Vol 27 (1) ◽  
pp. 5-13 ◽  
Author(s):  
Aldona Jarašūnienė ◽  
Laima Greičiūnė ◽  
Algirdas Šakalys
Keyword(s):  
Baltic Sea ◽  
Competitive Ability ◽  
International Market ◽  
Current Paper ◽  
Competitive Environment ◽  
Key Factors ◽  
Port Development ◽  
Baltic Sea Region ◽  
Port Competitiveness ◽  
Eastern Baltic

Constructive and systematic management of a seaport may determine its successful competitive ability in the international market. The analysis of competitive ability of Klaipėda Seaport highlighted its weakest points, influencing the overall competitiveness of the port. The encouragement of port competitive ability is often stressed, however, there is a lack of methodologically based competitive models that include all key factors determining port competitive ability. The current paper gives stages of evaluation both the significance of indices and the importance of criteria in the international market allowed us to determine factors that have an impact on port competitive ability mostly. The method, allowing to predict cargo flows, was used in the description of scenarios for the encouragement of port competitiveness. In order to ensure these cargo flows the port development is also concerned, as an integrated task, which would allow the evaluation of possible changes of cargo flows, port investments and influence of other ports on cargo flows, etc.

scholarly journals Comparative Analysis of Ports on the Eastern Baltic Sea Coast

Logistics ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Jūratė Liebuvienė ◽  
Kristina Čižiūnienė
Keyword(s):  
Comparative Analysis ◽  
Baltic Sea ◽  
General Type ◽  
Statistical Data ◽  
Eastern Shore ◽  
The Baltic Sea ◽  
Baltic Sea Region ◽  
The Baltic ◽  
Sea Coast ◽  
Eastern Baltic

Ports are an important part of the global and regional freight supply chain and transport network. As port activities have a significant impact on the economic growth of these countries, it is necessary to constantly analyse and plan port activities, anticipate market changes and improve the ability of ports to withstand the growing general competitive pressure. This article analyses studies conducted by researchers on the topic of seaports, thus, and find that there are no analyses comparing more than two ports. A comparative analysis of the ports on the eastern shore of the Baltic Sea was conducted using the analysis of statistical data. The comparative analysis of ports on the eastern Baltic Sea revealed that Klaipeda port is the most diversified port in the eastern Baltic Sea region, given that it does not have any single most important type of cargo. The largest ports in terms of bulk cargo are in Tallinn, Riga and Ventspils. Primorsk is the largest port for liquid cargo and St. Petersburg handles the greatest volumes of cargo of a general type andwhile the distribution of cargo flows in the port of Visotsk is best correlated with the selected parameters, which allows us to state that the infrastructure of this port is used to the maximum.

scholarly journals ВМІСТ МАКРОНУТРІЄНТІВ ТА ВАЖКИХ МЕТАЛІВ У ЛИСТКАХ ДЕРЕВ З ДЕВАСТОВАНИХ ЗЕМЕЛЬ КРИВОРІЗЬКОГО РЕГІОНУ (ЦЕНТРАЛЬНА УКРАЇНА)

2020 ◽  
Vol 5 ◽  
pp. 81-99
Author(s):  
Юлія В. Бєлик ◽  
Василь М. Савосько ◽  
Юрій В. Лихолат ◽  
Герман Хайльмейер ◽  
Іван П. Григорюк
Keyword(s):  
Betula Pendula ◽  
Robinia Pseudoacacia ◽  
Acer Negundo ◽  
Betula Pendula Roth ◽  
Robinia Pseudoacacia L

Актуальність досліджень була зумовлена необхідністю уточнення біогеохімічних характеристик деревних видів рослин, які природно зростають на девастованих землях. Метою роботи було проведененя порівняльного аналізу вмісту макропоживних речовин (макронутріентів) та важких металів у листках дерев, що спонтанно поширені на девастованих землях Криворізького регіону. Дослідження проводилося на Петровському відвалі, центральна частина Криворізького залізорудного та металургійного регіону (Дніпропетровська область, Україна). Вміст макронутрієнтів (K, Ca, Mg, P та  S) і важких металів (Fe, Mn, Zn, Cu, Pb та  Cd) у листках трьох видів дерев (клен ясенелистий  Acer negundo L., береза повисла Betula pendula Roth., робінія звичайна Robinia pseudoacacia  L.) були зібрані на девастованих землях. Встановлено, що вміст макроелементів (K, Ca, Mg, P, S) та важких металів (Fe, Mn, Zn, Cu, Pb, Cd) в листках деревних видів рослин маніфестує важкі екологічні умови на девастованих землях Петровського відвалу. Дерева, які природно зростають на цьому відвалі, мають очевидну нестачу поживних речовин (особливо К і Р) та надлишок токсичних металів (особливо Fe, Mn та Zn). Беручи до уваги виявлені значення оптимальних концентрацій макронутрієнтів та виявлений вміст важких металів у листках, ми припускаємо, що клен ясенолистий та робінія звичайна сарана (в порівнянні з березою повислою) більш стійкі до геохімічних умови девастованих земель.  

Changes in structure and function of epigeous cotyledons of woody angiosperms during early seedling growth

1977 ◽  
Vol 55 (2) ◽  
pp. 208-215 ◽  
Author(s):  
P. E. Marshall ◽  
T. T. Kozlowski
Keyword(s):  
Robinia Pseudoacacia ◽  
Fraxinus Pennsylvanica ◽  
Acer Negundo ◽  
Palisade And Spongy Parenchyma ◽  
Early Seedling ◽  
Robinia Pseudoacacia L ◽  
Mother Cells ◽  
And Function ◽  
Cotyledon Expansion ◽  
Seed Coats

Variations in anatomy and stomatal characteristics of cotyledons were studied with light microscopy and scanning electron microscopy during postgermination development. Species investigated were Acer negundo L., Ailanthus altissima (Mill.) Swingle, Fraxinus pennsylvanica Marsh., and Robinia pseudoacacia L. During their development, cotyledons of all species progressed through storage, transition, photosynthetic, and senescent stages. When germination was initiated, most cells of embryonic cotyledons were filled with reserve materials (lipids, proteins, and carbohydrates). Embryonic cotyledons lacked functional stomata, and those of very few species had developing guard-cell mother cells. In embryonic cotyledons, the mesophyll was differentiated into palisade and spongy parenchyma. Amounts of cotyledon expansion varied greatly among species, and cotyledon expansion was due primarily to increased cell size. Emergence of cotyledons from seed coats occurred over a range of seedling ages, depending on species. After cotyledons emerged, chlorophyll was rapidly synthesized and stomata became functional. Anatomical characteristics of cotyledons were much different from those of foliage leaves. Leaves were much thinner and had smaller parenchyma cells than did cotyledons. Cotyledons of Acer negundo and Robinia pseudoacacia were relatively short-lived (less than 30days), while those of the other species were more persistent.

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