Detecting environmental change in estuaries: Nutrient and heavy metal distributions in sediment cores in estuaries from the Gulf of Finland, Baltic Sea

Vaalgamaa, Sanna; Conley, Daniel J.

doi:10.1016/j.ecss.2007.06.007

Cited by 48 publications

(19 citation statements)

References 33 publications

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“…Relevant to this, Lee et al (1977) and Boström et al (1982) suggested that over the long-term, the slow but continuous release of P from shallow lake sediments in aerobic conditions may even exceed that in anaerobic conditions. However, possible increase in SAR (Emeis et al 2000;Vaalgamaa and Conley 2008) can cause overestimation of P efflux in this study.…”

Section: Dissolved Species In the Sediment-water Interfacementioning

confidence: 56%

“…This may be attributable to the presence of slowly degradable OP compounds (Reitzel et al 2007) or increased sedimentation of OM in the coastal area. In fact, Vaalgamaa and Conley (2008) reported that sedimentation has increased during the past decades in small shallow bays in the northern GoF. In the coastal sediments examined in the present study, Fe content was the only sediment variable to which residual P was statistically related (Table 6).…”

Section: Immobile Pmentioning

confidence: 73%

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The chemical character and burial of phosphorus in shallow coastal sediments in the northeastern Baltic Sea

Lukkari¹,

Leivuori²,

Vallius

et al. 2009

Biogeochemistry

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The chemical composition and vertical distribution of sediment phosphorus (P) in shallow coastal sediments of the northeastern Baltic Sea (BS) were characterized by sequential extraction. Different P forms were related to chemical and physical properties of the sediments and the chemistry of pore water and near-bottom water. Sediment P composition varied among the sampling sites located in the Archipelago Sea (AS) and along the northern coast of the Gulf of Finland (GoF): the organic rich sites were high in organic P (OP), while apatite-P dominated in the area affected by sediment transportation. Although the near-bottom water was oxic, the sediments released P. Release of P was most pronounced at the site with high sediment OP and reduced conditions in the sediment-water interface, indicating that P had its origins in organic sources as well as in reducible iron (Fe) oxyhydroxides. The results suggest that even though these coastal areas are shallow enough to lack salinity stratification typical for the brackish BS, they are vulnerable to seasonal oxygen (O 2 ) depletion and P release because of their patchy bottom topography, which restricts mixing of water. Furthermore, coastal basins accumulate organic matter (OM) and OP, degradation of which further diminishes O 2 and creates the potential for P release from the sediment. In these conditions, an abundance of labile OP may cause marked efflux of P from sediment reserves in the long-term.

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Section: Dissolved Species In the Sediment-water Interfacementioning

confidence: 56%

Section: Immobile Pmentioning

confidence: 73%

The chemical character and burial of phosphorus in shallow coastal sediments in the northeastern Baltic Sea

Lukkari¹,

Leivuori²,

Vallius

et al. 2009

Biogeochemistry

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“…It has been estimated that the sedimentation of organic matter and thus the burial of C, N and P increased in the Baltic Sea during the latter half of the twentieth century as a result of eutrophication (Jonsson and Carman 1994;Bonsdorff et al 1997;Emeis et al 2000;Vaalgamaa and Conley 2008). Jonsson and Carman (1994) suggested an increase in organic matter deposition by a factor larger than 1.7 between the 1920s and 1980s in the northern Baltic Proper and Emeis et al (2000) estimated a fourfold increase in sediment accumulation in the Bornholm, Gdansk and Gotland basins since 1900.…”

Section: Past Changesmentioning

confidence: 99%

Environmental Impacts—Marine Biogeochemistry

Schneider

Eilola

Lukkari

et al. 2015

Regional Climate Studies

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Marine biogeochemistry deals with the budgets and transformations of biogeochemically reactive elements such as carbon, nitrogen and phosphorus. Inorganic nitrogen and phosphorus compounds are the major nutrients and control organic matter (biomass) production in the surface water. Due to various anthropogenic activities, the input of these nutrients into the Baltic Sea has increased drastically during the last century and has enhanced the net organic matter production by a factor of 2-4 (eutrophication). This has led to detrimental oxygen depletion and hydrogen sulphide production in the deep basins of the Baltic Sea. Model simulations based on the Baltic Sea Action Plan (BSAP) indicate that current eutrophication and thus extension of oxygen-depleted areas cannot be reversed within the next hundred years by the proposed nutrient reduction measures. Another environmental problem is related to decreasing pH (acidification) that is caused by dissolution of the rising atmospheric CO 2 . Estimates indicate a decrease in pH by about 0.15 during the last 1-2 centuries, and continuation of this trend may have serious ecological consequences. However, the concurrent increase in the alkalinity of the Baltic Sea may have significantly counteracted acidification.

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“…However, the current rapid rate of industrialization and urbanization (Jiang et al 2013) and economic activities like mining (Navarro et al 2008), agriculture (Vaalgamaa and Conley 2008;Syed et al 2012), industries and transportation (Jaradat et al 2005; David and Sunday 2012) leads to contamination of environmental resources due to huge amount of waste they generate. For instance, gasoline, battery manufacture, metal plating, smelting, tanneries, petroleum refining, paint manufacture, pesticide, cosmetics, ceramics, pigment manufacture, printing and photographic industries, etc., are sources of heavy metal such as cadmium, zinc, copper, nickel, lead, mercury, cobalt, manganese and chromium (Kadirvelu et al 2001;Alloway 1995).…”

Section: Introductionmentioning

confidence: 99%

Analyzing soil contamination status in garage and auto mechanical workshops of Shashemane City: implication for hazardous waste management

Demie

2015

Environ Syst Res

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Background: Historically human being exist in harmony with their environment. However, the current rapid urbanization, industrialization and expansion of different economic activities were lead to contamination of environmental resources. Hence, the aim of this study was determining the level of heavy metal contamination of soil in garage and auto-mechanical workshops and comparing with existing national and international standards so as to now the impact they had on human being and environment.Methods: To achieve objectives, a total of 36 soil sample were collected form 0-15, 15-30 and 30-45 cm soil depth using calibrated auger. Three control soil samples were also collected from undisturbed area for comparison of the result so as to know the level of pollution. The concentration of heavy metal in soil samples were determined using atomic absorption spectrometer and calculation of their contamination factor, geo-accumulation index and pollution load index were done using SPSS version 20.0. To check variability of the pollutant under different service year of garage and soil depth, correlation analysis and analysis of variance were tested at α (alpha) = 0.05 significance level. Results:The result of study showed that the overall mean concentrations of the heavy metals viz. chromium (Cr), lead (Pb), nickel (Ni), cadmium (Cd) and cobalt (CO) were 290.1, 782.1, 443.6, 133.1 and 331.0 ppm respectively which is extremely higher than US EPA and EU regulation standards. Conclusion:The value of contamination factor and degree of contamination indicated that the study area is considerably polluted by heavy metals under investigation and hence require urgent remedial action for its reclamation.

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Detecting environmental change in estuaries: Nutrient and heavy metal distributions in sediment cores in estuaries from the Gulf of Finland, Baltic Sea

Cited by 48 publications

References 33 publications

The chemical character and burial of phosphorus in shallow coastal sediments in the northeastern Baltic Sea

The chemical character and burial of phosphorus in shallow coastal sediments in the northeastern Baltic Sea

Environmental Impacts—Marine Biogeochemistry

Analyzing soil contamination status in garage and auto mechanical workshops of Shashemane City: implication for hazardous waste management

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