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International Journal on Algae
SJR: 0.229 SNIP: 0.261 CiteScore™: 0.24

ISSN Imprimir: 1521-9429
ISSN On-line: 1940-4328

International Journal on Algae

DOI: 10.1615/InterJAlgae.v2.i4.40
pages 57-70

Periphyton biomass related to water pollution in the Pinang River basin, Malaysia

Wan Maznah
School of Biological Sciences, University Sains Malaysia, 11800 Minden, Penang, Malaysia
Mashhor Mansor
School of Biological Sciences, University Sains Malaysia, 11800 Minden, Penang, Malaysia
Ho Sinn Chye
School of Biological Sciences, University Sains Malaysia, 11800Minden, Pinang, Malaysia

RESUMO

Chlorophyll a concentration, ash-free dry weight (AFDW) and accumulation rate of organic matter (net productivity) were determined for periphyton assemblages developed on artificial substrate (glass slide). Periphyton samples were obtained by exposing glass slides on periphyton samplers, which were placed at 12 sampling stations with different levels of pollution around the Pinang River basin. Biomass and chlorophyll a concentration were highly variable, and the highest values were recorded at relatively polluted stations, where biomass peaked at 10.48 mg Chl. a/m2 and 8.24 g/m2 AFDW. Maximum biomass at clean sites was 4.1 mg Chl. a/m2 and 2.45 g/m2 AFDW, with maximum net production 85.71 mg AFDW/day. The accumulation of chlorophyll a and AFDW was characteristically higher during the drier months and relatively lower during the wet season at all sampling stations. AFDW positively correlated with chlorophyll a and net productivity.


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