Open AccessCHANGE DYNAMICS OF BIOGENIC MATTER IN RIVER WATERS OF SOUTHEAST LITHUANIA DURING PERIODS OF DIFFERENT WATERINESS
Author(s) -
Lina Bagdžiūnaitė-Litvinaitienė
Publication year - 2004
Publication title -
journal of environmental engineering and landscape management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.514
H-Index - 28
eISSN - 1822-4199
pISSN - 1648-6897
DOI - 10.3846/16486897.2004.9636836
Subject(s) - environmental science , abundance (ecology) , water quality , period (music) , lithuanian , phosphorus , organic matter , hydrology (agriculture) , ecology , geology , chemistry , biology , linguistics , philosophy , physics , geotechnical engineering , organic chemistry , acoustics
Water protection is one of the most all‐round regulated areas of the EU environmental control. In order to prognose the state of water ecosystem it is necessary to evaluate its long‐term changes. The paper analyses water quality of three southeast Lithuanian rivers (the Streva, the Merkys, the Šventoji) during the last three decades. The dependence of river water abundance and biogenic matter (mineral nitrogen and phosphorus) concentrations and amount changes was analysed. By investigating the annual data of biogenic matter concentrations and discharges during the period of 30 years, it is established that there is no dependence. After an additional sampling (3 times a month) of surface waters it is established that the dependence is strong, the coefficient of correlation fluctuates from 0,5 to 0,99.