Transboundary Lagoons of the Baltic Sea

Chubarenko, Boris; Domnin, Dmitriy; Navrotskaya, Svetlana; Stont, Zhanna; Chechko, V. A.; Bobykina, Valentina; Pilipchuk, V. A.; Karmanov, Konstantin; Domnina, A. M.; Bukanova, Tatiana; Topchaya, V.Yu.; Kileso, Alexander

doi:10.1007/978-3-319-43392-9_6

Cited by 14 publications

(5 citation statements)

References 17 publications

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“…Riverine inflows amount to 3.62 km 3 (17.1 %), atmospheric precipitation 0.5 km 3 (2.4 %), evaporation 0.65 km 3 (3.1 %), and groundwater inflows 0.07 km 3 (0.3 %). While the Curonian Lagoon has maintained the same environmental conditions over ages, the Vistula Lagoon experienced considerable anthropogenic modification at the end of the 19th century, evolving from a freshwater coastal lake to an estuarine lagoon with predominant marine influence (Chubarenko et al, 2017b). There are plans for constructing a second inlet to the lagoon at the Polish side (Rózyński et al, 2018) that could change the water balance of the lagoon in the future.…”

Section: Salinity Dynamics Of Lagoonsmentioning

confidence: 99%

Salinity dynamics of the Baltic Sea

et al. 2022

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Abstract. In the Baltic Sea, salinity and its large variability, both horizontal and vertical, are key physical factors in determining the overall stratification conditions. In addition to that, salinity and its changes also have large effects on various ecosystem processes. Several factors determine the observed two-layer vertical structure of salinity. Due to the excess of river runoff to the sea, there is a continuous outflow of water masses in the surface layer with a compensating inflow to the Baltic in the lower layer. Also, the net precipitation plays a role in the water balance and consequently in the salinity dynamics. The salinity conditions in the sea are also coupled with changes in the meteorological conditions. The ecosystem is adapted to the current salinity level: a change in the salinity balance would lead to ecological stress for flora and fauna, as well as related negative effects on possibilities to carry on sustainable development of the ecosystem. The Baltic Sea salinity regime has been studied for more than 100 years. In spite of that, there are still gaps in our knowledge of the changes in salinity in space and time. An important part of our understanding of salinity is its long-term changes. However, the available scenarios for the future development of salinity are still uncertain. We still need more studies on various factors related to the salinity dynamics. Among others, more knowledge is needed, e.g., from meteorological patterns at various space scales and timescales as well as mesoscale variability in precipitation. Also, updated information on river runoff and inflows of saline water is needed to close the water budget. We still do not understand the water mass exchange accurately enough between North Sea and Baltic Sea and within its sub-basins. Scientific investigations of the complicated vertical mixing processes are additionally required. This paper is a continuation and update of the BACC (Baltic Assessment of Climate Change for the Baltic Sea Region) II book, which was published in 2015, including information from articles issued until 2012. After that, there have been many new publications on the salinity dynamics, not least because of the major Baltic inflow (MBI) which took place in December 2014. Several key topics have been investigated, including the coupling of long-term variations of climate with the observed salinity changes. Here the focus is on observing and indicating the role of climate change for salinity dynamics. New results on MBI dynamics and related water mass interchange between the Baltic Sea and the North Sea have been published. Those studies also included results from the MBI-related meteorological conditions, variability in salinity, and exchange of water masses between various scales. All these processes are in turn coupled with changes in the Baltic Sea circulation dynamics.

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Section: Salinity Dynamics Of Lagoonsmentioning

confidence: 99%

Salinity dynamics of the Baltic Sea

et al. 2022

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“…Although these ecosystems are listed as protected and endangered, strong impacts from anthropogenic activities can, nevertheless, be recognized. One of the major factors in this case is morphological modification due to human activities [12,39] in the coastal area of Latvia. In terms of natural factors, the most significant ones are water cycling and coastal processes (which, together with sediment transport along the shore [40], are causing accumulation and gradually isolating the lagoon from the sea).…”

Section: Discussionmentioning

confidence: 99%

“…High variability of natural and anthropogenic conditions forms the uniqueness of lagoon habitats, as well as their role in the preservation of biological diversity [5][6][7][8][9][10]. Assessing the ecological state, studies on long-term changes have, so far, been carried out only in the largest coastal lagoons in the Baltic Sea, as well as river inlets [2,[11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Two Lagoons in the Coastal Area of the Baltic Sea

Purmalis,

Grinberga,

Dobkevica

et al. 2024

Limnological Review

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The proposed study is focused on an ecological analysis of Latvian coastal lagoons, emphasizing their unique but vulnerable nature. Coastal lagoons are recognized as fragile ecosystems of significant ecological, social, and economic value, as recognized by the European Directive 92/43/EEC (Habitats Directive). Despite their protected status, the existence of these ecosystems can be threatened by morphological, hydrological, and anthropogenic changes. The uniqueness of these ecosystems can be determined by the large number of influencing factors and their dynamics. They are affected by seawater, their level of fluctuation, wind exposure, overgrowing with macrophytes, freshwater sources, and water flow generated streams affecting sediment transport and accumulation. All the influencing factors determine a highly trophic ecosystem, which in the studied lagoons is rated as medium to poor ecological status, which confirms the above-mentioned vulnerability and fragility. The aim of this study was to analyze two lagoons in the coastal area of the Baltic Sea in the Riga Gulf, by characterizing, for the first time, their current conditions and ecological parameters because understanding such ecosystems is only partial. The physicochemical composition of lagoon sediments and water shows the impact of seawater by increased electrical conductivity and the concentration of SO42− and Cl− in water, while the presence of detritus in sediments is almost non-existent; thus, the content of organic matter is low with relatively variable pH. The results show that the diversity of studied benthic macroinvertebrates, macrophytes, zooplankton, and even phytoplankton species is low, but there is higher diversity in lagoons and their parts with regular water exchange with the sea. The study provides valuable insight into the ecological dynamics of coastal lagoons in Latvia, shedding light on their current conditions, anthropogenic impact, and the need for sustainable management measures.

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“…Many other trans-boundary waters (Newton et al, 2014), e.g., Vistula Lagoon (Chubarenko et al, 2014), Curonian Lagoon (Povilanskas et al, 2014) or Flensborg Fjord, are lacking like Szczecin Lagoon from a consistent and joint water quality target setting across political borders. Applying the Integrated Modeling approach of Schernewski et al (2015) to both parts of Szczecin Lagoon allowed to derive harmonized target values (Figure 7), accounting the differences in the present state of both parts, but also the differing reactions to nutrient load changes.…”

Section: Discussionmentioning

confidence: 99%