Long-term trends in nutrient concentrations in Polish coastal rivers

Jarosiewicz, Anna; Obolewski, Krystian; Ożgo, Małgorzata

doi:10.1016/j.ocecoaman.2015.04.007

Cited by 10 publications

(6 citation statements)

References 22 publications

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“…In the south-western part, the lake is fed by the Gardno-Łebsko Canal, connecting both lakes, and the Łupawa-Łebsko Canal, which is a by-pass linking valleys of two rivers of Polish Pomerania: the Łupawa and Łeba. As a result, Lake Łebsko is a sedimentation tank for pollution transported from an area of more than 2700 km 2 [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Heavy Metals in Lake Water and Sediments on Bottom Invertebrates Inhabiting the Brackish Coastal Lake Łebsko on the Southern Baltic Coast

Mrozińska

Bąkowska

2020

IJERPH

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Lake Łebsko is the largest and most productive coastal lake of the southern Baltic Sea to which it is permanently connected. The shoreline is well-developed, and the lake is divided into three parts: eastern, central, and western. Seawater intrusion affects most strongly the eastern part, where the Łeba River connects it with the sea. Samples of water and sediments were collected in 2014–2015. In the same places and time interval, bottom fauna was collected to determine the influence of environmental predictors on its qualitative-quantitative structure. Metals Cr (chromium), Pb (lead), Ni (nickel), Cu (copper), and Al (aluminium) in the samples were analyzed using inductively coupled plasma optical emission spectrometry. Most of the analyzed physicochemical variables of water were significantly higher in the eastern part: conductivity, salinity, sulfates (p < 0.0001) and chlorides (p = 0.01). Metal concentrations in water did not differ significantly between the lake parts, but in sediments they were generally higher in the western part. During the study, we detected significant changes in descriptors and abundance of the major groups of benthic fauna (Oligochaeta and Diptera), mostly between the eastern and western parts. BIO-ENV analysis showed that the benthic community of Lake Łebsko is shaped primarily by physicochemical variables of water (42% of the variance), linked with intrusion of seawater. Secondarily, the structure of the benthic community is affected by the amounts of heavy metals in sediments (31%) and water (12%). The findings can help us improve the principles of management of coastal lakes, including modification of hydrological conditions.

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Section: Introductionmentioning

confidence: 99%

Effects of Heavy Metals in Lake Water and Sediments on Bottom Invertebrates Inhabiting the Brackish Coastal Lake Łebsko on the Southern Baltic Coast

Mrozińska

Bąkowska

2020

IJERPH

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“…A sharp deceleration in a watercourse’s inflow into a coastal water body accelerates the mineralization of organic matter and causes the deposition of allochthonous and autochthonous matter in the bottom sediments 9 . For this reason, waters flowing into the sea through coastal lakes may be less loaded with nutrients and organic matter than they would otherwise be 10 , 11 .…”

Section: Background and Summarymentioning

confidence: 99%

Physicochemical characteristics of lakes along the southern Baltic Sea coast

Obolewski,

Matela,

Glińska-Lewczuk

et al. 2024

Sci Data

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We present a unique data set of selected physicochemical parameters characterizing the environment of the Baltic coastal lakes within Polish borders. The peculiarity of the system derives principally from the interaction of the lakes with a sea of relatively low salinity. In contrast to our best understanding of the state of biological knowledge, the abiotic parameters of coastal lakes along the southern Baltic Sea have never previously been so comprehensively supplemented. The database consists of physicochemical properties of 13 coastal lakes based on the analytical assessment of 419 water samples collected seasonally between 2014 and 2019. Water properties were analyzed according to the connection of the lakes to the Baltic Sea using a total of 23 predictors. The lakes were classified as closed, intermittently connected, or open. Based on the physicochemical data, a relationship between the hydrological connection between the lakes and the sea was determined. The data collected could be used to monitor ongoing global climate change at the biosphere level.

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“…Since they are located close to river mouths, coastal aquatic ecosystems are more exposed to pollution and loaded with heavy metals than other aquatic ecosystems [ 8 , 9 , 10 ]. Coastal waters, especially brackish ones, act as transition zones where weathering material from the catchment is trapped and through which some of the material is transported to the open sea.…”

Section: Introductionmentioning

confidence: 99%

“…Coastal waters, especially brackish ones, act as transition zones where weathering material from the catchment is trapped and through which some of the material is transported to the open sea. In the case of lakes along the southern Baltic Sea coast, their pollution loads are primarily of agricultural origin [ 10 , 11 ] or derive from domestic sewage discharged both directly from land and indirectly, through seawater intrusion, from the sea. Moreover, coastal lakes, due to their shallow depths, are particularly susceptible to wind-induced water mixing and resuspension of the mineral and organic matter stored in bottom sediments.…”

Section: Introductionmentioning

confidence: 99%

Phytoplankton Sensitivity to Heavy Metals in Baltic Coastal Lakes

Walkiewicz

Glińska-Lewczuk

Burandt

et al. 2022

IJERPH

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This study aimed to compare concentrations of chlorophyll-a between individual phytoplankton groups for four shallow Baltic coastal lakes, varying in type of connection with the sea. For two years, the research focused on quantifying the effects of abiotic factors—concentrations of heavy metals (Ba, Bi, Cr, Cu, Mn, Fe, Ni, Pb, and Zn) and hydrological connectivity—on phytoplankton composition, biomass, and photosynthetic activity. Our results show that hydrological factors are the main predictors of phytoplankton structure. The lakes differed in salinity: freshwater vs. brackish vs. transitional lakes. Irrespective of lake type, the dominant group was that of Cyanobacteria (~80%), but their percentage contribution was lower in the brackish lake. Baltic seawater intrusion resulted in a decrease in heavy-metal concentrations in lake water for Fe, Zn, Pb, and Bi. Redundancy analysis (RDA) suggested positive effects of some heavy metals on the biomass of the Chlorophyta and Bacillariophyta. For the Cryptophyta only, a slight decrease in biomass was linked with increased metal concentrations in open water.

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Long-term trends in nutrient concentrations in Polish coastal rivers

Cited by 10 publications

References 22 publications

Effects of Heavy Metals in Lake Water and Sediments on Bottom Invertebrates Inhabiting the Brackish Coastal Lake Łebsko on the Southern Baltic Coast

Effects of Heavy Metals in Lake Water and Sediments on Bottom Invertebrates Inhabiting the Brackish Coastal Lake Łebsko on the Southern Baltic Coast

Physicochemical characteristics of lakes along the southern Baltic Sea coast

Phytoplankton Sensitivity to Heavy Metals in Baltic Coastal Lakes

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