Pohjan liejukerrostumat kertovat Jyväsjärven ympäristöhistorian
Meriläinen, J. J. (2001). Pohjan liejukerrostumat kertovat Jyväsjärven ympäristöhistorian. Ahdin sanomat : Ympäristöntutkimuskeskuksen tiedotuslehti , 7(1), 9-11. http://urn.fi/URN:NBN:fi:jyu-201510223451
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2001Copyright
© 2001 Jyväskylän yliopisto
Jyväsjärven ympäristöhistoriaa ja ekologisen tilan muuttumista 1700-luvulta nykypäiviin selvitettiin eliöjäänteiden ja sedimentin fysikaalisten ja kemiallisten ominaisuuksien perusteella. Liejunäytteistä tutkittiin 32 alkuaineen ja orgaanisten haitta-aineiden, kuten hartsihappojen, PCB:n, DDT:n ja sen hajoamistuotteiden esiintymistä sekä piilevien ja surviaissääsken toukkien jäänteitä. Tämän ajanjakson, runsaan kahden vuosisadan aikana Jyväsjärvi muuttui erämaajärvestä kaupunkijärveksi. Tämä jakso sisältyy Jyväsjärvessä noin 80 cm:n paksuiseen liejukerrokseen. Yhden vuoden tapahtumat mahtuvat tässä liejuisessa historiankirjassa sivuun, jonka paksuus vaihtelee esiteollisen ajan noin kahdesta millistä voimakkaan kuormituksen ajan 15 milliin.
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Jyväskylän yliopistoParent publication ISBN
1238-8416
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http://urn.fi/URN:NBN:fi:jyu-201510223451Publication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/26997955
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