Variability of nitrogen levels in fishpen water and its effect on algal growth

Date

10-1985

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Aida R. Reyes

Abstract

Santos, Frederick Palermo. University of the Philippines at Los Banos, October, 1985. "Variability of Nitrogen Levels in Fishpen Water and its Effect on Algal Growth".

Adviser: Prof. Aida R. Reyes

Water samples were gathered from selected areas in a fishpen at the Alabang portion of Laguna de Bay at different sampling periods. Variability in concentrations of ammonium-nitrogen (NH4+-N), nitrite-nitrogen (N02-N) and nitrate-nitrogen (NO3-N), Total Kjeldahl Nitrogen (TEN) and algal count were determined from February to July. The NH4 5-N concentration was observed to increase from February to April, decreased during the summer months of April to May and finally increased in June and July. The levels of NO2-N and NO3-N did not change appreciably and no significant increase or decrease were observed. For TKN, the concentration increased from February to April and decreased from April to July. The algal count, on the other hand, was found to increase from March to April. These trends could be due to the possible utilization of the nitrogen species by the algae and as a net result of the rates of ammonification, nitrification, immobilization and denitrification process occurring at the nitrogen cycle of the fishpen water.

The study showed that there was no correlation existing between the different nitrogen species with the algal growth. The result, however, is inconclusive and further studies are recommended to be able to establish a definite trend.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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