การสำรวจสาหร่ายในน้ำพุร้อนโป่งอาง อำเภอเชียงดาว จังหวัดเชียงใหม่ เพื่อประโยชน์ทางการสอน

Abstract

Survey of algae in Pong Ang hot spring Chiang Dao district, Chiang Mai province during January – March 2013 was show water temperature ranged from 45 ºC to 60 ºC and the physical, chemical properties of water were also examined. The algae in 1 division 5 order 6 familes 8 genera 8 species were found in this site. All algae were classified in to Division Cyanophyta and the most common algae were in the Family Oscillatoriaceae that found in wide temperature ranges. At the temperature ranges of 45-50 ºC and 51-55 ºC were found blue green algae 8, 7 species respectively. At temperature ranges of 56-60 ºC were found various types of macroalgae at least 2 species. The biodiversity of algae were shown positive correlated with dissolved oxygen but shown negatively correlated with temperature and sulfide ion (confidence level of 95%.) This research was applied for biological science teaching of and in high school course that described in the topic of ecology and biodiversity. The complementary activity manuals for study the variety of algae in hot springs were constructed and applied to science subjects in ninth grades student of Ban Hoay Jakan Border Patrol Police Memorial School. The results were revealed the higher up averages scores in topic of ecology and biodiversity after used this manual. In term of satisfaction level of these manuals were shown the higher level after used.