Labso, Lloyd Leonell P. and Cacapit, Katrina M. (2014) Correlation of the relative abundance of macrobenthos with the physico-chemical parameters of the lakes of The Orchard Golf and Country Club, Dasmariñas, Cavite. Undergraduate thesis, De La Salle University-Dasmarinas.

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Abstract

This study is conducted to determine the water quality of three lakes in The Orchard Golf and Country Club. Each lake was divided into three sampling stations: A, B, and C. Three samples were taken at each station using an improvised Surbersampler, Ekman bottom-grabber and bottom water-sampler. Sampling was done every other week during the months of June and July for a total of three sampling days. Each sampling day includes collection, identification of macrobenthos species in each lake, and measurement of the physico-chemical parameters: light penetration, temperature, pH, nitrates, phosphates, dissolved oxygen (DO) and biological oxygen demand (BOD). Each of the physico-chemical parameters was correlated with the relative abundance of each species of macrobenthos. Analysis of Variance-Single Factor and Tukey-Kramer method were also performed to determine if there were significant differences in the physico-chemical parameters of the three lakes. It is shown that there are no significant differences in light penetration and temperature. Nitrate and phosphate have no significant difference in Lake 2 and Lake 3. A total of 1750 live macrobenthos were collected and identified under the Class Bivalvia and Gastropoda of the Phylum Mollusca. Four (4) macrobenthos were found in Lake 1, six-hundred four (604) in Lake 2 and one thousand one hundred forty two (1142) in Lake 3. A total of seven species were identified: C. arata, Cyclotus sp,. Faunus ater, Helicostyla sp., M. tuberculata, Parreysia sp., and P. ampullacea. M. tuberculata have the highest relative abundance meanwhile Cyclotus sp. and Parreysia sp..have the lowest. The pearson r-values show a consistent negative correlation of species with DO and negative correlation of species with pH in Lake 2. Several species show no correlations. In Lake 1, Cyclotus sp. and Helicostyla sp. have no correlation with nitrate. In Lake2, C. arata have no correlation with light penetration, temperature, phosphate, DO and BOD, F. ater have no correlation with temperature and BOD, and P. ampullacea shows no correlation with pH and BOD. In Lake 3, Helicostyla sp. shows no correlation with nitrate and phosphate, while P. ampullacea shows no correlation with light penetration, DO, and BOD. Only four species show significant associations with the physico-chemical parameters at 0.05 level. These are F. ater, M. tuberculata, Parreysia sp., and P. ampullacea.

Item Type:	Thesis (Undergraduate)
Additional Information:	BIO 1075 2009
Subjects:	Q Science > QH Natural history > QH301 Biology
Users:	College of Science and Computer Studies > Biological Science
Depositing User:	Users 4 not found.
Date Deposited:	04 Dec 2015 00:29
Last Modified:	24 Jun 2021 06:17
URI:	https://thesis.dlsud.edu.ph/id/eprint/242

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