the parameters used to determine the trophic state of a water body are: total phosphorus (tp),transparency (secchi disk depth) and chlorophyll a. however, these parameters show strong seasonalfluctuations which may hinder the estimation of trophic state. some authors have proposed that sediments be used as an additional tool to evaluate the trophic state of a water body. the aim of this study w...

Lake sediments reflect conditions in the water column and can be used for rapid, integrative measurements of limnological variables. Examination of 2LoPb-dated cores from 12 Florida lakes of widely differing trophic state (expressed as Carlson’s trophic state index: TSI) shows that net accumulation rate of organic matter is related to primary productivity in the water column. In 26 other lakes ...

Eutrophication of the eastern plain lake (EPL) region has a significant impact on sustainable economic development and is closely related to shortage water resources in China. Remote sensing provides an effective tool for quantifying trophic state inland waters by associating index (TSI) with optically active quality parameters. However, limited satellite coverage range operation time, long-ter...

Remote monitoring of trophic state for inland waters is a hotspot water quality studies worldwide. However, the complex optical properties limit potential algorithms. This research aims to develop an algorithm estimate in waters. First, turbid index was applied determination types on each pixel, and bodies are divided into two categories: algae-dominated (Type I) II). The algal biomass (ABI) th...

BACKGROUND The Teacher Stress Inventory (TSI) is an instrument for measuring occupational stress in teachers. This study aimed to translate and adapt it for use in Greece, and then assess its reliability and validity. METHODS The Greek versions of the TSI and the 14-item Perceived Stress Scale (PSS-14) were posted on all Greek educators' official sites during May 2012. A nationwide sample of ...

Water eutrophication is a global environmental problem that poses serious threats to aquatic ecosystems and human health. The evaluation of provides theoretical basis technical guidance for the management rehabilitation water ecosystems. In last four decades, dozens methods have been applied freshwater eutrophication, but there clear need optimize standardize most suitable methods. We addressed...

An index model for quality evaluation based on the formula of similarity membership functions in the fuzzy c-means (FCM) clustering algorithm is proposed. Summing up the weighted similarity degrees between an observation and designed specific quality-ordered levels develops an alternative overall index. Stretching the values of the controlling parameters in the formula of the similarity members...