Published in Scientific Papers. Series D. Animal Science, Vol. LXII, Issue 2
Written by Adina POPESCU, Mirela CREȚU, Daniela Cristina IBĂNESCU, Aurelia NICA, Angelica DOCAN
Nutrients play a significant role for the environmental state of lakes, mainly because the primary production of lakes is strongly influenced by nutrient availability. From all these nutrients special attention is accorded to the total organic carbon (TOC), total nitrogen (TN) and the total phosphorus (TP). In this context, the aim of this paper was to determine the TOC, TN,and TP from the sediment and macrophytes samples from Horia Lake, Tulcea County, Romania. The lake is located in the area of Horia, being limited to the north, west, and south by the agricultural field. The slope of the ground allows the accumulation of the waters from the versants adjacent to the lake, with suspension contributions, fertilizers,and herbicides used for the adjacent corn crop. All the samples were collected in the autumn season (November 2016), from six stations of the lake. The results revealed significant differences (p˂0.05) in the concentration of the TOC, TN, and the TP. Comparing the means values of these nutrients from macrophytes and sediments, it can be concluded that the higher values from macrophytes are the result of the assimilation capacity of these nutrients.
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