Diversity of the riparian vegetation of lower agusan river towards establishing the sago-based eco belt for disaster risk reduction
Paper Details
Diversity of the riparian vegetation of lower agusan river towards establishing the sago-based eco belt for disaster risk reduction
Abstract
The study describes the floristic diversity of Lower Agusan river as basis in enhancing riparian vegetation as buffer zone to reduce flash flood impacts. A survey was conducted in the 5-kilometer easement of the river to determine existing floristic composition and soil characteristics using transect and quadrat method. Results showed that the vegetation is composed of 105 species of vascular plants belonging to 85 genera and 42 families, with composite Shannon-Weiner diversity index (H’) of 1.338 for the entire ecobelt. Despite low diversity index, a number of important floral species are present in the riverbanks wherein six species under threatened status were recorded. The vegetation structures differ in every site covered by the survey. In Pagatpatan, the palm Nipa fruticansis predominant although significant portions are also occupied by dense grass species. The lowest diversity of plant species was in the Banza site because it is already densely populated,. In species richness, the highest species count comprising 63% of the total identified species was recorded in Mahay site. This is followed by Pagatpatan and Banza at 61% and 50%, respectively. The stocking density of the ecobelt area was assessed to be very poor to function ecologically as a riparian buffer, having a mean density of 48 stems per hectare only. This indicated that all areas surveyed were classified to be of high risk, thus immediate rehabilitation is necessary to enhance vegetation cover especially those with low plant diversity status.
Abraham ERG, Gonzalez JCT, Castillo ML, LitILJ., Fernando ES. 2010. Forest cover and biodiversity profile of the crater area of Mt. Makiling, Luzon, Philippines. Asia Life Sciences, Supplement 4, 49-82.
Amoroso VB, Amoroso CB, Coritico FB. 2012. Diversity and Status of Plants in Three Mountain Ecosystems in Southern Mindanao, Philippines. Asian Journal of Biodiversity 3(1), 50-73. http://dx.doi.org/10.7828/ajob.v3i1.83
Amoroso VB, Arances J. 2002. Participatory Inventory and Assessment of Floral Resources and Livelihood Development in Malindang Range, Misamis Occidental. (unpublished)
Azuelo AG, SarianaLG, Pabualan MP. 2010. Diversity and Ecological Status of Bryophytes in Mt. Kitanglad, Bukidnon. Asian Journal of Biodiversity 1(1), 49-71.
Badali H, Gueidan C, Najafzadeh MJ, Bonifaz A, van den Ende AHGG, de Hoog GS. 2008. Biodiversity of the genus Cladophialophora. Studies in Mycology, 61, 175–191. http://dx.doi.org:10.3114/sim.2008.61.18
Baird ART, Wetmore DG.2003. Riparian Buffers Modification and Mitigation Guidance Manual. Virginia Department of Conservation and Recreation. Chesapeake Bay Local Assistance. September 2003 – Reprinted 2006.
Bakhtiari F, Jacobsen JB, Strange N, Helles F. 2014. Revealing lay people’s perceptions of forest biodiversity value components and their application in valuation method. Global Ecology and Conservation 1, 27-42. http://dx.doi.org/10.1016/j.gecco.2014.07.003
Chua-Barcelo RT. 2014.Ethnobotanical survey of edible wild fruits in Benguet, Cordillera administrative region, the Philippines. Asian Pacific Journal of Tropical Biomedicine 4(Supplement 1), S525-S538. http://dx.doi.org:/10.12980/APJTB.4.201414B36
Culmsee H, Pitopang R, Mangopo H, Sabir S. 2011. Tree diversity and phytogeographical patterns of tropical high mountain rain forests in Central Sulawesi, Indonesia. Biodiversity and Conservation 20(5), 1103-1123. http://dx.doi.org/10.1007/s10531-011-0019-y
Faham E, Rezvanfar A, Shamekhi T. (2008). Analysis of socio-economic factors influencing forest dwellers’ participation in reforestation and development of forest areas (The case study of West Mazandaran, Iran). American Journal of Agricultural and Biological Sciences 3(1), 438-443.
Fernando ES, Co LL, Lagunzad DA, Gruezo WS, Barcelona JF, Madulid DA, Baja-Lapis A, Texon GI, Manila AC, Zamora PM. 2008.Threatened plants of the Philippines: a preliminary assessment. Asia Life Sciences, Supplement 3, 1–52.
Gardner T. 2012. Monitoring Forest Biodiversity: Improving Conservation through Ecologically-Responsible Management (Reprint edition). London: Routledge.
Gomez-Roxas P, Boniao RD, Burton EM.,Gorospe-Villarino A, Nacua SS. 2005. Community-Based Inventory and Assessment of Riverine and Riparian Ecosystems in the Northeastern Part of Mt. Malindang, Misamis Occidental. Laguna: SEAMEO SEARCA.
Harrison PA., Berry PM, Simpson G, Haslett JR, Blicharska M, Bucur M, Turkelboom F. 2014. Linkages between biodiversity attributes and ecosystem services: A systematic review. Ecosystem Services. 9, 191-203. http://dx.doi.org/:10.1016/j.ecoser.2014.05.006
Hill D. 2005. Handbook of biodiversity methods: survey, evaluation and monitoring. Cambridge University Press.
Lowe S, Browne M, Boudjelas S, De Poorter M. 2000. 100 of the World’s Worst Invasive Alien Species A selection from the Global Invasive Species Database. The Invasive Species Specialist Group (ISSG).
Madulid DA. 2001. A Dictionary of Philippine Plant Names1. Philippines: The Bookmark, Inc.
Pelser P. 2013. Retrieved August 14, 2014, from www.phytoimages.siu.edu
Shi H, Singh A, Kant S, Zhu Z, Waller E. 2005. Integrating Habitat Status, Human Population Pressure, and Protection Status into Biodiversity Conservation Priority Setting. Conservation Biology 19(4), 1273–1285. http://dx.doi.org/10.1111/j.1523-1739.2005.00225.x
Spellerberg IF, Fedor PJ. 2003. A tribute to Claude Shannon (1916–2001) and a plea for more rigorous use of species richness, species diversity and the “Shannon- Wiener” Index. Global Ecology and Biogeography 12(3), 177–179.
The IUCN. 2016. The IUCN Red List of Threatened Species 2016-3. Downloaded on 05 March 2017.
Roger T. Sarmiento, Glenn Arthur A. Garcia, Rowena P. Varela (2017), Diversity of the riparian vegetation of lower agusan river towards establishing the sago-based eco belt for disaster risk reduction; JBES, V10, N4, April, P70-80
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