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Distribution and Diversity of Mangrove in the Philippines

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Ching Servano

on 30 September 2012

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Transcript of Distribution and Diversity of Mangrove in the Philippines

Distribution and Diversity of Mangrove in the Philippines Deoxier Ribo Agub, Angelica Mae Gallego, Judylene Pacdiw, Richele Servano INTRODUCTION DISTRIBUTION Mangrove Forest Found in Aurora, Philippines CONSERVATION & DELINEATION OF THE MANGROVE FORESTS Fifty-six percent of 54 true species of mangroves thrive in Aurora and here, in its mangrove forest, 77% of the 39 major and minor species known in the Philippines can be found. One largest impact on mangrove delineation is the expansion of brackish water aquaculture. A total of fourteen mangrove species from eight families and twelve associated mangrove species were identified in Danjugan. The Philippines ranked 5th among countries with the most number of endemic species. It has elatively high mangrove diversity with 35 true mangrove species Comparison of areal estimates of mangrove forest for the Philippines. Dates indicate year of estimate. The total area of mangrove forests in the Philippines is estimated to be 256,185 hectares based on circa 2000. Sixty six out of 82 provinces in the country propagate mangroves and noted that Palawan and Sulu have the largest mangrove forests It is estimated a total of 15.2 million hectares of mangroves exist worldwide. MANGROVES Mangroves are various kinds of trees up to medium height and shrubs that grow in saline coastal sediment habitats in the tropics and subtropics – mainly between latitudes 25° N and 25° S OBJECTIVES To present the distribution and diversity of mangrove in the philippines This is because they have developed a series of physiological and morphological adaptations that have allowed them to successfully colonize these environments. These adaptive traits are: salt secreting leaves, exposed branching root system, production of viviparous propagules They can grow under a relatively wide range of flooding and salinity conditions Kingdom Plantae Subkingdom Traechiobionta Division Magnoliophyta Superdivision Spermatophyta
(Seed plants) Division Magnoliophyta
(Flowering plants) Class Magnoliopsida Subclass Rosidae Order Rhizophorales Family Rhizophoraceae Order Myrtales Family Lythraceae Family Melastomataceae Family Myrtaceae Class Rosospsida Order Lamiales Family Lamiaceae Family Verbenaceae To be able to present the species in different selected areas To delineate the mangrove degradation in the Philippines To enumerate several uses and/or advantages of mangrove forests in the Philippines Worldwide distribution of mangroves (Forestry Dept., FAO, United Nations, 1994). Of the total mangrove coverage, 41.4% exist in South and Southeast Asia Traditionally, mangroves are used for the production of firewood, charcoal, alcohol, medicines and thatching used for construction. It provide biological protection from coastal erosion. It provides a ground for nurseries and feeding ground for marine species Spatial distribution of mangrove forests of the Philippines for 2000. Mangrove areal extent by province. Geographical Distribution of Mangrove in Aurora Avicennia lanata Avicennia marina Avicennia officinalis Bruguiera gymnorrhiza Bruguiera parviflora Bruguiera sexangula Ceriops tagal Kandelia candel Lumnitzera littorea Nypa fruticans Rhizopora apiculata Rhizopora mucronata Diversity of mangrove species in Danjugan Island, Cauayan,Negros Occidental, Philippines Schematic outline map of Danjugan Island with location of lagoon areas where mangrove stands were identified. Total abundance of true mangrove species in each lagoon on Danjugan Island Lumnitzera littorea Avicennia marina Rhizopora stylosa Sonneratia alba Sonneratia caseolaris Exocoercia agallocha Xylocarpus granatum Xylocarpus moluccensis Aegicera sp. Nypa fruticans Bruguiera cylindrical Bruguiera gymnorrhiza Ceriops decandra Rhizophora apiculata Rhizopora mucronata Sonneratia alba Sonneratia caseolaris Another is the need of constructing residential houses for landless residents, thus clearing the forests. Delineation Conservation Requirements for fish pond lease application had been tightened all-throughout the country. During the early 1900s, a wide-spread ban of cutting trees are implemented Legal permits to clear forest was also made difficult to obtain Switching to alternative sources of fuels and income CONCLUSION The diversity of mangroves is relatively high because of its geographical location wherein environments are subtropical or tropical where mangroves can thrive in. List of Mangrove found in Aurora, Philippines
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