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Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

The Journal of Latvian Academy of Sciences

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1407-009X
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Volume 65, Issue 5-6 (Jan 2011)

Issues

Reconstruction of past anthropogenic impact intensity in Lake Engure using sedimentary record analysis

Māris Kļaviņš
  • Faculty of Geography and Earth Sciences, University of Latvia, Raiņa bulv. 19, Rīga LV-1586, LATVIA
  • Other articles by this author:
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/ Agnese Pujāte
  • Faculty of Geography and Earth Sciences, University of Latvia, Raiņa bulv. 19, Rīga LV-1586, LATVIA
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/ Ilga Kokorīte
  • Faculty of Geography and Earth Sciences, University of Latvia, Raiņa bulv. 19, Rīga LV-1586, LATVIA
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/ Laimdota Kalniņa
  • Faculty of Geography and Earth Sciences, University of Latvia, Raiņa bulv. 19, Rīga LV-1586, LATVIA
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/ Valērijs Rodinovs
  • Faculty of Geography and Earth Sciences, University of Latvia, Raiņa bulv. 19, Rīga LV-1586, LATVIA
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/ Linda Ansone
  • Faculty of Geography and Earth Sciences, University of Latvia, Raiņa bulv. 19, Rīga LV-1586, LATVIA
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/ Jonas Mažeika
  • Radioisotope Research Laboratory, Nature Research Centre, T. Ševčenkos 13, Vilnius 03223, LITHUANIA
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/ Maruta Jankēvica
  • Faculty of Geography and Earth Sciences, University of Latvia, Raiņa bulv. 19, Rīga LV-1586, LATVIA
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/ Egils Bogans
  • Institute of Atomic Physics and Spectroscopy, University of Latvia, Raina bulv. 19, Rīga LV-1586, LATVIA
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/ Anda Švāgere
  • Institute of Atomic Physics and Spectroscopy, University of Latvia, Raina bulv. 19, Rīga LV-1586, LATVIA
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Published Online: 2012-06-28 | DOI: https://doi.org/10.2478/v10046-011-0030-4

Reconstruction of past anthropogenic impact intensity in Lake Engure using sedimentary record analysis

Environmental pollution with trace elements is considered as one of the most important environmental problems. Analysis of trace element accumulation in sedimentary phases of lakes may reflect the overall regional pollution level, and analysis of trace element accumulation patterns in sediment profiles can help to reconstruct the history of anthropogenic impact. The aim of this study was to analyse trace element concentrations in sediments of Lake Engure in Latvia and to determine factors influencing their availability. The metal concentrations in sediments of Lake Engure are at background levels, especially compared with metal concentrations in West European countries. However, the change in element concentration in sedimentary profiles provides information about trends of recent accumulation (within the last 100 years) and on the balance between natural and human-induced accumulation processes.

Antropogēnās ietekmes intensitātes rekonstrukcija Engures ezerā, izmantojot nogulumu sastāva analīzi

Vides piesārņojums ar toksiskiem mikroelementiem ir viena no nozīmīgām vides problēmām. Mikroelementu uzkrāšanās ezeru nogulumos ļauj novērtēt vispārējos piesārņojuma līmeņus ezera sateces baseinā, bet metālu sadalījums nogulumu vertikālajā profilā atspoguļo cilvēka ietekmes mainības raksturu. Pētījuma mērķis ir analizēt mikroelementu koncentrāciju Engures ezera nogulumos un izvērtēt to saturu ietekmējošos faktorus. Salīdzinot ar mikroelementu koncentrāciju Rietumeiropas valstu ūdenstilpju nogulumos, metālisko elementu koncentrācijas Engures ezerā ir tuvu fona līmenim. Tomēr pētīto elementu koncentrāciju izmaiņas nogulumu profilā ļauj izvērtēt antropogēnās slodzes mainības raksturu pēdējo 100 gadu laikā un raksturot antropogēno un dabiski noritošo procesu mainības raksturu.

Keywords: lake sediments; paleolimnology; trace and major elements; organic matter; pollen; spectrophotometry

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Published Online: 2012-06-28

Published in Print: 2011-01-01


Citation Information: Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences., ISSN (Print) 1407-009X, DOI: https://doi.org/10.2478/v10046-011-0030-4.

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