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Hydrochemical versus Biological Conditions of the Functioning of Three Shallow Lakes in Łęczna‐Włodawa
Author(s) -
Ferencz Beata,
Dawidek Jarosław,
Toporowska Magdalena
Publication year - 2014
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143013x13807328849332
Subject(s) - trophic state index , eutrophication , dominance (genetics) , trophic level , drainage basin , environmental science , hydrology (agriculture) , ecology , nutrient , biology , geology , geography , biochemistry , cartography , geotechnical engineering , gene
Lake‐catchment relationships were presented with reference to each part of the subsystem. Ionic loads reflected the potential of the catchment areas and displayed the following pattern: Lake Rotcze < Lake Sumin < Lake Syczyńskie; with respect to every ion, except nitrogen. The highest specific load of ions in Lake Syczyńskie and the strong hydrochemical influence of the lake inlets facilitated the growth of water blooms of cyanobacteria, with a dominance of toxic filamentous P. agardhii . It resulted in a poor ecological status of the lake (Q index = 0.8) and its hypertrophy (TSI chl‐a = 78). The specific load of ions in the Lake Rotcze catchment (0.23 kg/yr·km 2 of P‐PO 4 ) contributed to the good ecological status (Q = 3.2) and mesotrophic character (TSI chl‐a = 50) of the lake. Lake Sumin has a moderate catchment influence (2.41 kg/yr·km 2 of P‐PO 4 ), which facilitated moderate ecological (Q = 2.1) and trophic (eutrophy; TSI chl‐a = 63) status.