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Riparian, channel and environment (RCE) inventory, species composition and vegetation analysis of the streams in Tubay, Agusan Del Norte, Philippines

Dawn Rosarie M. Fajardo, Jess H. Jumawan

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J. Bio. Env. Sci.7(5), 119-127, November 2015


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Riparian zone possesses a wide variety of environmental processes. A study was conducted in Tubay, Agusan del Norte to assess the species composition, vegetation analysis and RCE Inventory of four selected water systems. A total of 1344 individual were recorded from 51 different species and most of the samples collected was from the family Poaceae. Vegetation analysis revealed that the study area was generally characterized by Pandanus affinis (75), Eichhornia crassipes (46.3), Pistia stratiotes (32.2), Calamus microcarpus (29.2), Spenomeris chinensis (28.2), Chromolaena odorata (27.5), Phrynium interruptum (26.1), Selaginella plana (25.1), Sphagneticola trilobata (25) and Cocos nucifera (24.1). Among the four study stations, Tagmamarkay had the most number of individuals followed by Dumlao, Bugnam and Upstream MBR. Moreover, Upstream MBR had the highest RCE score. The overall species diversity and species richness (1.82) were considered to be moderately high and the computed species evenness (0.85) were also high. The results suggest that the species abundance was most likely distributed evenly among other species in all study sites. The dominance of C. microcarpus and P. affinis resulted to a low species richness at Upstream MBR and the selected water systems ranged from fair to good condition.


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Riparian, channel and environment (RCE) inventory, species composition and vegetation analysis of the streams in Tubay, Agusan Del Norte, Philippines

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