Congruence patterns of aquatic communities in a tropical river basin,Malaysia |
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Authors: | Salman Abdo Al-Shami Che Salmah Md Rawi Suhaila Abdul Hamid Nurul Huda Abdul Mariam Zhafarina Rusli Wan Nur Asiah Wan Mohd Adnan Nur Adibah Mohd Ishadi Mohd Shafiq Zakeyuddin Sanya Abdulkareem Al-Qormuti Khalid A. Al-Mutairi Yap Chee Kong |
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Affiliation: | 6. Department of Agriculture and Technology, Faculty of Agriculutre, Universiti Putra Malaysia, Selangor 43400, Malaysia;7. Department of Plant Science, Kulliyyah of Science, International Islamic University of Malaysia, Kuantan, Pahang 25200, Malaysia;8. Biotechnology Division, Department of Chemistry Malaysia, Selangor 46661, Malaysia;9. Regulatory and Environmental Science Unit, TNB Research Sdn Bhd, Kawasan Institusi Penyelidikan, Kajang, Selangor 43000, Malaysia;10. Faculty of Forestry and Environment, Universiti Putra Malaysia, Selangor 43400, Malaysia |
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Abstract: | The loss of aquatic biodiversity in tropical streams of SE Asia is evident due to increasing anthropogenic activities. Therefore, there is a necessity for immediate and feasible conservation plans. Effective conservation planning depends on successful application of surrogate groups. However, progress of this approach is hindered by the paucity of relevant reports based on cross-taxon congruence analysis. In this study, we investigated congruence patterns among aquatic groups (Plecoptera, Trichoptera, Ephemeroptera, Odonata and fish) in six rivers located in the Kerian River Basin (KRB), Malaysia. Species richness was significantly correlated among aquatic groups (except for Ephemeroptera and Trichoptera where r = 0.040 and P = 0.202). The strongest relationship in species richness was reported between Ephemeroptera and Plecoptera. The Mantel's r coefficient of similarity matrices (based on the Bray-Curtis distance measure) showed a positive correlation between the matrices of Ephemeroptera-Trichoptera and Plecoptera-Trichoptera. However, a negative relationship was reported between Odonata-fish matrices. The relationships between average Trichoptera-Odonata distance to the centroid (i.e. beta diversity) among the aquatic groups were also investigated. The strongest relationship in the average to the centroids was reported between Ephemeroptera and Odonata (R2 = 0.424, P < 0.05). However, the weakest relationship was reported between Trichoptera and fish with R2 value of 0.024. It is concluded that richness of Plecoptera, Odonata and fish showed correlations patterns, and these can be used as surrogates for each other with some restrictions. |
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