Banca de DEFESA: FELIPE GUIMARAES COSTA DA SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : FELIPE GUIMARAES COSTA DA SILVA
DATE: 27/09/2023
TIME: 14:00
LOCAL: Instituto de Tecnologia
TITLE:

EVALUATION OF THE TROPHIC STATE INDEX OF LAGO AÇU (INSTITUTE OF AGRONOMY LAKE), LOCATED ON THE SEROPÉDICA CAMPUS OF THE FEDERAL RURAL UNIVERSITY OF RIO DE JANEIRO

KEY WORDS:

Eutrophication, chlorophyll a, TSI.

PAGES: 98
BIG AREA: Ciências Agrárias
AREA: Engenharia Agrícola
SUMMARY:

Eutrophication involves the enrichment of a body of water with nutrients, leading to excessive algae growth. While this process can occur naturally, human activities have exacerbated eutrophication, resulting in significant impacts on the water quality of lakes and reservoirs. Eutrophication is primarily caused by the input of nutrients, mainly phosphorus and nitrogen, from untreated domestic and agroindustrial effluents. One way to assess the magnitude of eutrophication is through the Trophic State Index (TSI), which considers parameters such as Chlorophyll a, Total Phosphorus, dissolved oxygen, pH, solids, among others, and allows for the classification of a water body on a scale ranging from ultra-oligotrophic to hyper-eutrophic. In this context, this study aims to determine the Trophic State Index of Lake IA at the Federal Rural University of Rio de Janeiro (UFRRJ). For this purpose, two sampling campaigns were conducted on August 26, 2022, and December 14, 2022, during which samples were collected from 40 points in the lake using an aluminum boat for subsequent analysis. The results were plotted on maps with color scales to visualize the distribution of the values obtained. The TSI values found for both campaigns were 77.3 and 76.3 for August and December, respectively, classifying the lake as hyper-eutrophic on both dates, which represents the worst condition of eutrophication on the scale.

COMMITTEE MEMBERS:
Presidente - 1759225 - ALEXANDRE LIOI NASCENTES
Interno - 2353141 - LEONARDO DUARTE BATISTA DA SILVA
Externo à Instituição - DAVID VILAS BOAS DE CAMPOS - EMBRAPA