We studied a complete Holocene sediment record from shallow (zmax = 9.7 m) Lake Harris, Florida (USA) to infer the historical development of the lake and its current eutrophic status. We used (210)Pb and (14)C to date the 5.9-m sediment sequence (core LH-6-13) and determined accumulation rates for bulk sediment, organic matter, calcium carbonate, phosphorus fractions and biogenic silica fractio...

In this paper, we first obtained the data of each water quality monitoring point in May and July Hassel Sea 2021, analyzed spatial distribution element total phosphorus (TP), nitrogen (TN), transparency (SD), high manganese index (CODmn) chlorophyll a (Chl. a) data, then used integrated trophic state method algal species quotient to evaluate lake. The results were assess lake’s status. showed t...

Temporal and seasonal variability of hydrochemical properties in a deep, highly eutrophic lake was presented. It was shown that the feedback between the biocenosis and abiotic properties was of key importance for the lake environment, especially for features shaped by oxygen content. During vegetation season in a shallow trophogenic zone supersaturated with oxygen, quick depletion of some nutri...

Dissolved organic carbon (DOC) in lakes serves as a substrate for heterotrophic bacterial growth, regulator of the global cycle, and light absorption agent. DOC eutrophic is greatly influenced by phytoplankton phenology terrigenous input rivers. Therefore, it necessary significant to dynamically monitor concentration, storage, riverine exchange flux DOC. By using in-situ measurements from 2004 ...

The hypothesis was tested that zooplankton community size structure shifts toward an increased relative biomass of microzooplankton with increased lake trophy at 12 sites in Quebec, The seasonal mean abundance and biomass of ciliates, rotifers, nauplii, cladocerans, and cyclopoid copepods were significantly (P < 0.1) related to lake trophy, but Calanoid copepod abundance and biomass varied inde...