Diversity of diatoms in relation to the physico-chemical characteristics of Dasmariñas River, Dasmariñas, Cavite.

Casareo, Norrie-Anne A. and Blasquiño, Alvin Dale Roel V. (2014) Diversity of diatoms in relation to the physico-chemical characteristics of Dasmariñas River, Dasmariñas, Cavite. Undergraduate thesis, De La Salle University-Dasmarinas.

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Abstract

The study entitled: Diversity of Diatoms in Relation to the Physico-chemical Characteristics of Dasmarinas River talks about the diatom species that can be found in Dasmarinas River in relation to its physico-chemical characteristics namely: pH, salinity, transparency, DO, temperature, TDS and BOD. Dasmarinas River is classified according to the water standard set by the DENR under Administrative Order No. 34 Series of 1990 and it is categorized under Class D which means that the river is suitable for use in irrigation, livestock watering and agriculture. Collections of samples were done twice, one during the dry season and the other during the rainy season from the duration of May to August. The species collection was done using plankton net with a mesh size of 2μm and was subjected to centrifugation using a rocket type centrifuge to isolate and identify the diatom species. Testing for its physico-chemical characteristics on the other hand was done on field except for the BOD. It was found out that more diatom species emerged during the rainy season because of factors like the fulvic acid content of the river and the richness of the environment after the rain. There are nineteen species of diatoms identified and were computed for its Simpson and Shannon indices, both used in identifying the diversity of diatoms. Their diversity was also correlated to the physico-chemical characteristics of the river using the Pearson r correlation and showed that the higher the diversity index of the species, the more diverse the organisms are. However, there are no rare species found in the river thus, the site might be ideal for industrial building purposes.

Item Type: Thesis (Undergraduate)
Additional Information: BIO 1074 2009
Subjects: Q Science > QH Natural history > QH301 Biology
Users: College of Science and Computer Studies > Biological Science
Depositing User: Ms. Bibiana Alcantara
Date Deposited: 04 Dec 2015 00:17
Last Modified: 04 Dec 2015 00:17
URI: http://thesis.dlsud.edu.ph/id/eprint/241

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