Mixing zones within the complex transitional waters of the Baltic Sea Vistula Lagoon

Krechik, V. А.; Krek, Alexander; Bubnova, E. S.; Капустина, М. В.

doi:10.1016/j.rsma.2019.101023

Cited by 6 publications

(3 citation statements)

References 43 publications

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“…Many high-level publications on the various management aspects of TTW have focused on the Baltic Sea area [53]. This is no surprise, since 8 of 31 TTW in Europe are around the Baltic Sea and 4 are along its southern rim [54,55]. There is a particular focus on cross-border cooperation for the environmental protection of TTW [56,57].…”

Section: Introductionmentioning

confidence: 99%

Transboundary Transitional Waters: Arenas for Cross-Border Cooperation or Confrontation?

Povilanskas

Razinkovas-Baziukas

2023

Sustainability

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The Russian Federation’s invasion of Ukraine in 2022 evoked academic interest in various aspects of international security and stability. The main objective of this study was to elicit the essential features and indicators for gauging the current state of cross-border cooperation and the risks of confrontation in and around transboundary transitional waters, i.e., those transitional waters where two or more countries share an estuary, delta, or lagoon while having a contiguous border in the territorial waters. The Cooperation and Confrontation Index comprises five facets and 25 indicators spread equally among these five facets. The following are the facets based on the integrated values with which the Cooperation and Confrontation Index for each transboundary transitional water body is calculated: 1. Socioeconomic Cohesion; 2. Environmental Coherence; 3. Cross-border Connectivity; 4. Cross-border Co-operation; and 5. Confrontation Risk. A comprehensive worldwide inventory of transboundary transitional waters was created. The investigation results show that eight transboundary transitional water areas are under high confrontation risk, while six areas are under no confrontation risk. The conclusion is that this risk of confrontation is closely correlated with the level of corruption in a more bellicose country sharing the transboundary transitional water body.

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Section: Introductionmentioning

confidence: 99%

Transboundary Transitional Waters: Arenas for Cross-Border Cooperation or Confrontation?

Povilanskas

Razinkovas-Baziukas

2023

Sustainability

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“…В последние годы выполнены исследования гидрологии и гидрохимии в зоне маргинального фильтра р. Преголя (Lukashin et al 2018;Krechik et al 2020). Исследования планктонных сообществ системы «р.…”

Section: Introductionunclassified

Plankton communities of the “Pregolya River – Vistula Lagoon – Kaliningrad Sea Channel (KSC) – Baltic Sea system”

Semenova,

Dmitrieva

2023

Proceedings ZIN

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The species composition, abundance and biomass, trophic relationships of phytoplankton and zooplankton, as well as the proportion of dead individuals in zooplankton were studied in the water system "Pregolya River – Kaliningrad Sea Channel (KSC) – Vistula Lagoon – Baltic Sea" in July, August and October 2021. In total 173 taxa of phytoplankton and 73 taxa of zooplankton were found during period of investigation. The maximal species diversity was observed in the summer period, in autumn it was decreasing. The maximum number of taxa for both phyto- and zooplankton was found in the Vistula Lagoon and in the KSC, the minimum – in the Baltic Sea. In summer the 3 communities in phytoplankton, 4 in zooplankton, in autumn – 3 communities in both phyto- and zooplankton were found. The plankton communities were confined to water areas with different salinity: The Pregolya River, the KSC and the Vistula Lagoon, the Baltic Sea. The dominant complex of species at the stations differed; species of a predominantly freshwater complex were noted in the Pregolya River, brackish-water species were found in the Vistula Lagoon, and a marine complex of species was identified at the stations of the sea strait and in the Baltic Sea. More abundant plankton communities both in summer and autumn were in the KSC and the Vistula Lagoon (phytoplankton biomass varied from 1.19 g/m3 to 11.89 g/m3; zooplankton biomass varied from 305 mg/m3 to 1801 mg/m3). In this area the most optimal conditions for the development of plankton were formed such as an increased nutrient content and maximum water heating. Plankton communities both in the Pregolya River and in the Baltic Sea in summer and autumn were less abundant (phytoplankton biomass varied from 0.16 g/m3 to 2.50 g/m3; zooplankton biomass varied from 34 mg/m3 to 468 mg/m3). The most intense trophic relationships in the plankton community in the summer in the Baltic Sea, optimal – in the KSC and in the Vistula Lagoon were formed. The proportion of dead individuals in the zooplankton of the studied system in both seasons was maximal in the areas, which had the critical salinity for hydrobionts and high turbulence conditions such as KSC, the Sea strait and at the exit from Sea strait.

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“…Ключевые слова: структура зоопланктона, нагонные явления, штормовая активность, направление ветра, река Преголя, бассейн Балтийского моря Преголя -средняя, медленно текущая река общей длиной 123 км (292 км с притоками)является важнейшим пресноводным объектом Калининградской области РФ. Устьевая область реки, Вислинский залив (часть залива, которая принадлежит РФ, называется Калининградским заливом) и Калининградский морской канал, выходящий в Балтийское море, формируют единую гидродинамическую систему, для которой характерны смешение пресных и морских вод, а также вертикальный и горизонтальный градиент солёности (Чубаренко и Шкуренко, 2001 ;Krechik et al, 2020). В месте впадения р. Преголи в Вислинский залив среднее значение солёности составляет около 3 ‰, а вόды с солёностью 1 ‰ проникают в русло по дну; придонная граница клина солоноватых водных масс распространяется на 11 км выше устья реки, приповерхностнаяна 7 км (Домнин и др., 2013).…”

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Wind effect on zooplankton distribution in the estuary of the Pregolya River (the Baltic Sea basin) after technogenic transformation of its riverbed

Polunina

Stont

2022

mbj

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In 2014–2018, large-scale hydrotechnical works were carried out in the estuary of the Pregolya River. The structural changes in the summer zooplankton in the river mouth in 2019 were revealed in comparison with the data obtained prior the riverbed transformation. In June 2019, zooplankton total abundance and biomass were of (136 ± 111) thousand ind.·m−3 and (860 ± 840) mg·m−3, respectively. It is comparable with mean annual data of 1996–2006: (71 ± 66) thousand ind.·m−3 and (664 ± 337) mg·m−3, respectively. In the summer of 2019, for the first time, the euryhaline species Eurytemora affinis inhabiting the Vistula Lagoon was recorded in the Novaya Pregolya branch. The presence of this species in the river branches, as well as the values of water salinity, may result from an increase in the frequency or intensity of water surges into the river from the Vistula Lagoon. In this regard, the wind conditions in 1998–2006 and 2011–2019 were analyzed. In 2011–2019, there was no increase in the frequency of winds acting along the effective surge direction (southwest and west ones) compared with those in 1996–2006. However, a rise in the frequency of storms was noted, inter alia in summer. Westerly storm winds cause upstream water inflow from the Vistula Lagoon and channel. Probably, the destruction of river macrophyte communities, concreting of embankments, and a change in the channel bottom configuration affected the intensity of water inflow from the lagoon into the river branches during surges and became the main factor affecting the distribution of euryhaline species from the lagoon in the river branches.

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Mixing zones within the complex transitional waters of the Baltic Sea Vistula Lagoon

Cited by 6 publications

References 43 publications

Transboundary Transitional Waters: Arenas for Cross-Border Cooperation or Confrontation?

Transboundary Transitional Waters: Arenas for Cross-Border Cooperation or Confrontation?

Plankton communities of the “Pregolya River – Vistula Lagoon – Kaliningrad Sea Channel (KSC) – Baltic Sea system”

Wind effect on zooplankton distribution in the estuary of the Pregolya River (the Baltic Sea basin) after technogenic transformation of its riverbed

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