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This
page
was
last updated on:
July 09, 2011
See
the Process
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P3DM for Collaborative Research
in the Philippines |
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| 1:10,000
scale model of Polillo Islands Philippines (Yr 2001) made to
determine the extent and distribution of remaining forest
fragments.
 Note:
Much of Polillo's unique wildlife is dependent on lowland
forest. However prior to this study only limited speculative
information was available about the distribution and extent of
such forest remaining in the Polillo Islands. To produce
relevant conservation plans at an appropriate geographical
scale, more complete spatial records are necessary.
Method/tools:
P3DM, GPS and GIS
Details:
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Images and text taken
with the consent of the authors from
http://mampam.50megs.com/polillo/2001
A complete report on the study done on Polillo Islands is
found at
http://mampam.50megs.com/polillo/2001
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Thematic maps:
No satellite imagery was available for the Polillo Islands,
and due to the extensive and demanding terrain comprehensive
ground surveys were not feasible.
 Therefore
community mapping was considered to be an indispensable tool
and a P3DM exercise was conducted to determine the extent and
distribution of forest. This initially involved working with
local representatives and college students to construct a 10
square meter 3D model of the islands wherein each 10m contour
based on topographic maps is represented by a sheet of
corrugated cardboard and secured by papier-mâché. Secondly
selected GPS points were mapped onto the model to assist
participants form a mental map of their locality. Discussions
with key informants both in the field and during model
construction formed the basis of land-use maps. These maps
were subsequently ground-truthed using Global Positioning
Systems (GPS) data collected during fieldwork and the accuracy
of participants' information assessed. The inaccessibility of
certain areas coupled to inevitable time restrictions required
at times the knowledge of informants to stand alone. The
mapping project was coordinated with ecological surveys in
order to produce a spatially coherent understanding of the
forest, wildlife and natural resources in the Polillo Islands. |
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Lessons learned:
In some areas forest and coconuts form a complex interlinked
matrix, which cannot be delineated further at this scale,
consequently forest cover on the maps is overestimated.
However the 3D participatory mapping technique effectively
provides an overall picture of land-use, incorporating
sufficient data to provide a strong framework upon which ideas
and recommendations can be formulated.
The reliability of most informants'
contributions corresponded very closely to the GPS data that
was collected. The model in SLPC is freely
accessible for all and provides an invaluable educational and
planning tool. The map does not claim to be all encompassing
and can be both improved and made more accurate as knowledge
grows. This process is currently ongoing and overseen
diligently by Hannibal Disanta, a student at SLPC. The map
aims to raise awareness of the geography and land use of
Polillo. The 3D model is visually effective, easy to
understand and we hope of interest to all, and welcomes
additional information. Forested regions marked on the map
vary in quality, partly due to the extent of logging and
partly due to the underlying geology and landscape. A brief
description of forest is given where appropriate in the site
descriptions, for more detail refer to the
forestry report.
From this knowledge gained it is possible to identify priority
forest areas in need of protection.
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More Case studies on P3DM used in the
context of collaborative research
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Model
produced by different stakeholders in the framework of the
.... funded (2001) |
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