Density and relative abundance of macrobenthic invertebrates in Talisid River, Tanay, Rizal

Date of Publication

1993

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Biology

Subject Categories

Biology

College

College of Science

Department/Unit

Biology

Abstract/Summary

The study assessed the present condition of Talisid River using macrobenthic invertebrates as indicators of water quality. Four stations were sampled in February, March, and June of 1993, using a one square foot Surber Sampler. Physico-chemical factors of the river like width, depth, velocity of flow, temperature, substrate composition, water hardness, pH, and amount of dissolved oxygen were obtained as well as density and relative abundance of macrobenthic invertebrates were obtained.The mean width of the river ranged from 6.41 to 7.71 meters, mean depth from 31.13 to 31.42 cm., mean velocity from 0.78 m/sec to 3.79 m/sec, mean temperature from 26.6 to 29 centigrade, mean dissolved oxygen ranged from 8.68 mg/1 to 9.26 mg/1, mean pH from 7.17 to 8.48, and mean water hardness from 279.49 mg/1 to 308.64 mg/1. Findings showed that density of macrobenthic invertebrates decreased from February to June. Insect nymphs of the Genus Isoperla were found to be the most abundant organism. Substrate composition of the four sampling stations were mostly made up of gravel and coarse sand.

Abstract Format

html

Language

English

Format

Print

Accession Number

TU06369

Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

90 leaves ; Computer printout

Keywords

Marine invertebrates--Philippines--Tanay (Rizal); Water--Analysis

Embargo Period

1-14-2021

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