Biodiversity of benthic diatoms and macroalgae in Mae Sa stream, Doi Suthep-Pui national park, Chiang Mai
2001
Yuwadee Peerapornpisal(Chiang Mai University, Chiang Mai (Thailand). Faculty of Science. Department of Biology) E-mail:scboi017@chiangmai.ac.th | Samorn Kluensuwan(Chiang Mai University, Chiang Mai (Thailand). Faculty of Science. Department of Biology) | Chamaporn Niwasabutr(Chiang Mai University, Chiang Mai (Thailand). Faculty of Science. Department of Biology) | Kanokporn Kawiwat(Chiang Mai University, Chiang Mai (Thailand). Faculty of Science. Department of Biology) | Sakorn Promkutkaew(Chiang Mai University, Chiang Mai (Thailand). Faculty of Science. Department of Biology) | Trai Pekthong(Chiang Mai University, Chiang Mai (Thailand). Faculty of Science. Department of Biology) | Prasert Waiyaka(Chiang Mai University, Chiang Mai (Thailand). Faculty of Science. Department of Biology) | Thattaporn Kunpradid(Chiang Mai University, Chiang Mai (Thailand). Faculty of Science. Department of Biology)
Biodiversity of benthic diatoms and macroalgae was investigated in Mae Sa stream, Doi Suthep Pui national park, Chiang Mai province from April 1997 to March 2000. The most diverse group of organisms were benthic diatoms, 244 species were encountered. Sixty six species of these had never been recorded in Thailand before. A total of 75 species of macroalgae were found and eighteen of these were new records for Thailand. The prominent benthic diatoms were in the Order Pennales, e.g., Navicula spp., Nitzschia spp., Fragilaria spp. and Gomphonema spp. The macroalgae were Cladophora glomerata Kutzing and Spirogyra spp. in the Division Chlorophyta. The organisms which could be used as indicators the quality of water were the red macroalgae such as Batrachospermum macrosporum Montague, Batrachospermum vugum Agardh and Nemalionopsis shawii Skuja. They indicate oligotrophic status. In addition, these three red macroalgal species were new records for Thailand. Benthic diatoms that indicated eutrophication and high organic pollution were Gomphonema parvulum (Kutzing) Grunow and Nitzschia palea (Kutzing) W. Smith.
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This bibliographic record has been provided by Thai National AGRIS Centre, Kasetsart University
