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The ‘colour’ of remotely sensed and GIS data in the sustainable management of tropical coastal biocomplexity. Farid Dahdouh-Guebas & Nico Koedam Laboratory of General Botany and Nature Management, Mangrove Management Group, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium. - PowerPoint PPT Presentation
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ANGROVE management group
TheThe ‘colour’ of remotely sensed and GIS data ‘colour’ of remotely sensed and GIS data in the sustainable management ofin the sustainable management of
tropical coastal biocomplexitytropical coastal biocomplexity
TheThe ‘colour’ of remotely sensed and GIS data ‘colour’ of remotely sensed and GIS data in the sustainable management ofin the sustainable management of
tropical coastal biocomplexitytropical coastal biocomplexity
Farid Dahdouh-Guebas & Nico KoedamFarid Dahdouh-Guebas & Nico Koedam
Laboratory of General Botany and Nature Management,Laboratory of General Botany and Nature Management,Mangrove Management Group, Vrije Universiteit Brussel,Mangrove Management Group, Vrije Universiteit Brussel,
Pleinlaan 2, B-1050 Brussels, BelgiumPleinlaan 2, B-1050 Brussels, Belgium
ANGROVE management group
‘‘Tropical Coastal Biocomplexity’Tropical Coastal Biocomplexity’
MANGROVE FORESTS
flora fauna
man env.
biodiversity
ecosystem functioning
SEAGRASS BEDS
flora fauna
man env.
biodiversity
ecosystem functioning
CORAL REEFS
flora fauna
man env.
biodiversity
ecosystem functioning
overall relevance :biodiversity
coastal protectionwood and fishery resource
ANGROVE management group
‘‘The colour’The colour’
remote sensing as a monitoring toolfrom historic aerial photography to VHR satellite imagery
GIS as an analysis tool
ANGROVE management group
Remote sensing and GIS in theRemote sensing and GIS in thesustainable managementsustainable management
of tropical coastal ecosystemsof tropical coastal ecosystems
8 papers covering tropical coastal areas in Venezuela, Kenya, Sri Lanka and Malaysia
ANGROVE management group
Resolutions :spatial
temporalspectral
(radiometric)(taxonomic) S pat ial
Temporal
S pect ral
Identific a tionof spec ies
typ ific a tion of ec osystems and land uses / land c over
Disaster monitoring
G eomorphology
d
Popula tion dynamic s
Pollution
Vegeta tionstress
Arc haeology
Typific ation ofassemblages
tc
Identific a tionof spec ies
typ ific a tion of ec osystems and land uses / land c over
Disaster monitoring
ANGROVE management group
Identification of species/genera (LK)Identification of species/genera (LK)
Verheyden, A., F. Dahdouh-Guebas, K. Thomaes, W. De Genst, S. Hettiarachchi & N. Koedam, 2002.High resolution vegetation data for mangrove research as obtained from aerial photography.
tonalitytexture
structure
shapeshadesize
position
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Vegetation structure dynamics (LK)Vegetation structure dynamics (LK)
Dahdouh-Guebas, F., A. Verheyden, W. De Genst, S. Hettiarachchi & N. Koedam, 2000. Four decade vegetation dynamics in Sri Lankan mangroves as detected from sequential aerial photography : a case-study in
Galle. Bulletin of Marine Science 67(2): 741-759.
19561956 19741974 19941994
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Identification of species (LK-KE)Identification of species (LK-KE)IKONOS satellite imageryaerial photography
pansharpenedBGNIR
false colourcomposite
panchromatic
• new space technology (Ikonos, Quickbird) • automated identification• extra temporal window
20022002
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Calzadilla Pérez, A., M.C.J. Damen, D. Geneletti & T. Hobma, 2002. Monitoring a recent delta formation in a tropical coastal wetland using remote sensing and GIS. Case study : Guapo River Delta, Laguna de Tacarigua,
Venezuela.
Monitoring coastal Monitoring coastal changes (VE)changes (VE)
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Typification of assemblages/ Typification of assemblages/ land cover (KE)land cover (KE)
Kairo, J.G., B. Kivyatu & N. Koedam, 2002. Application of remote sensing and GIS in the management of mangrove forests within and adjacent to Kiunga Marine Protected Area, Lamu, Kenya.
ANGROVE management group
Typification of land Typification of land cover / assemblages (LK)cover / assemblages (LK)
Jayatissa, L.P., M.-C. Guéro, S. Hettiarachchi & N. Koedam, 2002. Changes in vegetation cover and socio-economic transitions in a coastal Lagoon
(Kalametiya, Sri Lanka), as observed by teledetection and ground-truthing, can be attributed to an upstream
irrigation scheme.
socio-economic survey :• use of lagoon water• fishermen demography• (shell)fish catch
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De La Ville, N., A.C. Diaz & D. Ramirez, 2002. Remote sensing and GIS technologies as tools to support sustainable management of areas devastated by landslides.
Disaster Disaster management management
(VE)(VE)
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Long-term monitoring / integration / forecastingLong-term monitoring / integration / forecasting
Dahdouh-Guebas, F., J.G.Kairo, L.P. Jayatissa, S. Cannicci & N. Koedam, 2002. An ordination study to view vegetation structure dynamics in disturbed and undisturbed mangrove forests in Kenya and Sri Lanka. Plant Ecology 161(1): 123-135.
ANGROVE management group
Research challengesResearch challenges• remote sensing and GIS innovation;
• automated integration of image attributes (texture + structure detection) : have the computer done what until now only the human eye is capable of;
• long-term monitoring (way beyond the scale of projects with a short duration of 4-5 yrs);
• parallel complementary research from many disciplines;
• integration of inter-disciplinary data.