Practical techniques for mapping small patches of mangroves
| Autor: | Jon P. Altamirano, Jurgenne H. Primavera, Hisashi Kurokura, Ma. Regina N. Banaticla |
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| Rok vydání: | 2010 |
| Předmět: |
geography
Data processing geography.geographical_feature_category business.industry Computer science Mangrove area Environmental resource management Wetland Management Monitoring Policy and Law Aquatic Science Field (geography) Remote sensing (archaeology) Global Positioning System Mangrove business Coastal management Ecology Evolution Behavior and Systematics Remote sensing |
| Zdroj: | Wetlands Ecology and Management. 18:707-715 |
| ISSN: | 1572-9834 0923-4861 |
| Popis: | Practical mapping methods employing GPS field surveys and manual image analyses with affordable software were used to assess two mangrove sites in Aklan Province, NE Panay Island, central Philippines. The Jawili mangroves, absent from current maps, actually included 21.5 ha with 24 true mangrove species. On the other hand, the Batan Estuary mangroves, shown to be 4244 ha in available topographic maps, revealed only 406 ha of scattered patches. Actual mangrove data on specific areas worldwide is limited, especially in the Philippines where available maps show discrepancies from actual mangrove distribution. Remote sensing (RS) techniques provide promising results but require expensive setup, particularly for small areas. Therefore, financially limited users need affordable and rapid mapping alternatives. The practical techniques presented here can be immediately implemented at minimal cost and can produce useful estimates of actual mangrove area, fundamental for coastal management. Basic principles used here also have potential applications in other systems and locations. When resources are available though, additional confirmation and precise mapping are also further recommended. |
| Databáze: | OpenAIRE |
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