Seasonal changes in mayfly communities and abundance in relation to water physicochemistry in two rivers at different elevations in Northern Peninsular Malaysia
A field study was performed at rivers in Gunung Jerai forest reserve(Kedah,Malaysia) to assess seasonal changes in mayfly community structure and abundance in relation to altitude and water physicochemistry.Rivers at lower(Batu Hampar River) and higher(Teroi River) elevations were visited through dr...
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| Format: | Article |
| Language: | English |
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Northeast Institute of Geography and Agroecology
2011
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| Online Access: | http://ir.unimas.my/id/eprint/9897/ http://ir.unimas.my/id/eprint/9897/1/Suhaila.pdf |
| _version_ | 1848836660620427264 |
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| author | Suhaila, Abdul Hamid Mohd Ravi, Che Salmah Dieng, Hamady Abu Hassan, Ahmad Satho, Tomomitsu Miake, Fumio |
| author_facet | Suhaila, Abdul Hamid Mohd Ravi, Che Salmah Dieng, Hamady Abu Hassan, Ahmad Satho, Tomomitsu Miake, Fumio |
| author_sort | Suhaila, Abdul Hamid |
| building | UNIMAS Institutional Repository |
| collection | Online Access |
| description | A field study was performed at rivers in Gunung Jerai forest reserve(Kedah,Malaysia) to assess seasonal changes in mayfly community structure and abundance in relation to altitude and water physicochemistry.Rivers at lower(Batu Hampar River) and higher(Teroi River) elevations were visited through dry and wet seasons in September 2007 to August 2008.Monthly visits were made to 20 sites on each river,and water and aquatic insects were sampled using D-pond aquatic nets.Water was warmer,more acid,and more turbid in Teroi River during wet season.Ammonia was the only nutrient exhibiting significant seasonal variations(greater during wet season).Chemical oxygen demand content was higher in Teroi River where biochemical oxygen demand content was low during wet season.Species richness was higher in Batu Hampar River,but displayed seasonal variations only in Teroi River.Among the eight families encountered,Baetidae was the commonest.Baetid abundance was usually high during wet season,and those belonging to the dominant genus(Baetis) were more abundant in Teroi River.Heptageniidae was the second commonest family;its predominant genus,Thalerospyrus was more abundant in Teroi River during dry season.Caenidae,Leptophlebiidae and Oligoneuriidae were only found in Batu Hampar River where their abundances peaked during dry season,i.e.,Habrophlebiodes sp.and Isonychia sp.Ephemerellidae and Teloganodidae occurred only in Teroi River,with the first found only during dry season.Mayflies were recorded under very distinct physicochemical conditions,illustrating their potential usefulness for assessing water quality.Caenids,leptophlebids,oligoneurids ephemerellids and teloganodids seem to be particularly sensitive to temperature,acidity,turbidity,chemical oxygen demand and biochemical oxygen demand,parameters that varied with river altitude. |
| first_indexed | 2025-11-15T06:27:18Z |
| format | Article |
| id | unimas-9897 |
| institution | Universiti Malaysia Sarawak |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T06:27:18Z |
| publishDate | 2011 |
| publisher | Northeast Institute of Geography and Agroecology |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | unimas-98972021-07-05T11:54:06Z http://ir.unimas.my/id/eprint/9897/ Seasonal changes in mayfly communities and abundance in relation to water physicochemistry in two rivers at different elevations in Northern Peninsular Malaysia Suhaila, Abdul Hamid Mohd Ravi, Che Salmah Dieng, Hamady Abu Hassan, Ahmad Satho, Tomomitsu Miake, Fumio GE Environmental Sciences Q Science (General) A field study was performed at rivers in Gunung Jerai forest reserve(Kedah,Malaysia) to assess seasonal changes in mayfly community structure and abundance in relation to altitude and water physicochemistry.Rivers at lower(Batu Hampar River) and higher(Teroi River) elevations were visited through dry and wet seasons in September 2007 to August 2008.Monthly visits were made to 20 sites on each river,and water and aquatic insects were sampled using D-pond aquatic nets.Water was warmer,more acid,and more turbid in Teroi River during wet season.Ammonia was the only nutrient exhibiting significant seasonal variations(greater during wet season).Chemical oxygen demand content was higher in Teroi River where biochemical oxygen demand content was low during wet season.Species richness was higher in Batu Hampar River,but displayed seasonal variations only in Teroi River.Among the eight families encountered,Baetidae was the commonest.Baetid abundance was usually high during wet season,and those belonging to the dominant genus(Baetis) were more abundant in Teroi River.Heptageniidae was the second commonest family;its predominant genus,Thalerospyrus was more abundant in Teroi River during dry season.Caenidae,Leptophlebiidae and Oligoneuriidae were only found in Batu Hampar River where their abundances peaked during dry season,i.e.,Habrophlebiodes sp.and Isonychia sp.Ephemerellidae and Teloganodidae occurred only in Teroi River,with the first found only during dry season.Mayflies were recorded under very distinct physicochemical conditions,illustrating their potential usefulness for assessing water quality.Caenids,leptophlebids,oligoneurids ephemerellids and teloganodids seem to be particularly sensitive to temperature,acidity,turbidity,chemical oxygen demand and biochemical oxygen demand,parameters that varied with river altitude. Northeast Institute of Geography and Agroecology 2011 Article NonPeerReviewed text en http://ir.unimas.my/id/eprint/9897/1/Suhaila.pdf Suhaila, Abdul Hamid and Mohd Ravi, Che Salmah and Dieng, Hamady and Abu Hassan, Ahmad and Satho, Tomomitsu and Miake, Fumio (2011) Seasonal changes in mayfly communities and abundance in relation to water physicochemistry in two rivers at different elevations in Northern Peninsular Malaysia. Wetland Science, 9 (3). pp. 240-250. ISSN 1672-5948 http://www.researchgate.net/publication/236859854_Seasonal_changes_in_mayfly_communities_and_abundance_in_relation_to_water_physicochemistry_in_two_rivers_at_different_elevations_in_northern_peninsular_Malaysia |
| spellingShingle | GE Environmental Sciences Q Science (General) Suhaila, Abdul Hamid Mohd Ravi, Che Salmah Dieng, Hamady Abu Hassan, Ahmad Satho, Tomomitsu Miake, Fumio Seasonal changes in mayfly communities and abundance in relation to water physicochemistry in two rivers at different elevations in Northern Peninsular Malaysia |
| title | Seasonal changes in mayfly communities and abundance in relation to water physicochemistry in two rivers at different elevations in Northern Peninsular Malaysia |
| title_full | Seasonal changes in mayfly communities and abundance in relation to water physicochemistry in two rivers at different elevations in Northern Peninsular Malaysia |
| title_fullStr | Seasonal changes in mayfly communities and abundance in relation to water physicochemistry in two rivers at different elevations in Northern Peninsular Malaysia |
| title_full_unstemmed | Seasonal changes in mayfly communities and abundance in relation to water physicochemistry in two rivers at different elevations in Northern Peninsular Malaysia |
| title_short | Seasonal changes in mayfly communities and abundance in relation to water physicochemistry in two rivers at different elevations in Northern Peninsular Malaysia |
| title_sort | seasonal changes in mayfly communities and abundance in relation to water physicochemistry in two rivers at different elevations in northern peninsular malaysia |
| topic | GE Environmental Sciences Q Science (General) |
| url | http://ir.unimas.my/id/eprint/9897/ http://ir.unimas.my/id/eprint/9897/ http://ir.unimas.my/id/eprint/9897/1/Suhaila.pdf |