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ASB/BNPP Pantropic Analysis

ASB/BNPP Pantropic Analysis. Kate Sebastian IFPRI. Phase I Results. Stratification of the pan-tropics A framework and a collection of databases for broadly identifying critical or priority areas and extrapolating research findings. Phase II Activities.

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ASB/BNPP Pantropic Analysis

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  1. ASB/BNPP Pantropic Analysis Kate Sebastian IFPRI

  2. Phase I Results • Stratification of the pan-tropics • A framework and a collection of databases for broadly identifying critical or priority areas and extrapolating research findings Phase II Activities • Improve the spatial characterization of the focus area in terms of … • Biodiversity-rich habitats • Physical hydrology • Human population • Forest transition areas

  3. What defines the limits of the pantropic focus area? Warm humid and subhumid tropics Source: IFPRI (2001) based on FAO/IIASA GAEZ Database (1999). Climate based (AEZ) Stratification

  4. Indomalay Afrotropical Neotropical Australasia Source: WWF Global 200 Ecoregions (WWF 2001). Notes: The Biomes displayed are the biomes that are present in the warm humid and subhumid tropics. Terrestrial Biomes by Realm Biodiversity based Strati-fication • WWF • Terrestrial • Ecoregions • Realms (8) • Biomes (14) • Ecoregions (220)

  5. Forest Biomes by Realm Why are these different? Indomalay Afrotropical Australasia Neotropical Source: WWF Global 200 Ecoregions (WWF 2001). Notes: The Biomes displayed are only forest biomes that are present in the warm humid and subhumid tropics.

  6. What did/can we learn from these stratifications and other global datasets?

  7. What share of the tropics is in the climate derived focus area?

  8. Warm Tropics: 1.1 billion 529.3 million How many people live in the biodiversity derived focus area?

  9. Phase II : Improve the spatial characterization of the focus area and define critical areas in terms of … • Biodiversity-rich habitats • Physical hydrology • Human population • Forest transition areas

  10. Each polygon represents a Global 200 ecoregion of which any portion falls within the tropics focus area. Source: WWF Global 200 Ecoregions (WWF 2001). Within moist broadleaf forest biome by biogeographical realm Global 200 Ecoregions Critical Areas based on potential threats to biodiversity

  11. How much of the focus area is considered of biodiversity importance? Global 200* Share of Share of Total AEZ Focus Area Global 200* Area within focus area in Global 200* Total Area focus region Global 200* in focus area (sq km) (sq km) (sq km) Central America & Caribbean 867,212 315,483 89,294 10.3% 28.3% South America 10,511,001 6,686,896 5,313,585 50.6% 79.5% Sub-Saharan Africa 7,915,363 2,797,917 2,371,069 30.0% 84.7% Mainland Asia 2,261,473 3,120,785 1,352,313 59.8% 43.3% Insular SE Asia 2,319,902 1,677,802 1,616,155 69.7% 96.3% Other 77,751 37,199 23,700 30.5% 63.7% Total 23,952,702 14,636,082 10,766,116 44.9% 73.6% * includes only those Global 200 ecoregions that coincide with the focus region

  12. Where are the ASB sites located in relation to the Global 200 Ecoregions & What do the Global 200 characteristics tell us about biodiversity? Biological Distinctiveness Index

  13. Source: IFPRI reclassification of SLCR classes from Global Land Cover Classification Database (GLCCD – USGS/EDC 2000). Does land cover help us understand patterns of conversion? Source: Sebastian 2001.

  14. What is the land cover for the pantropics by region by rainfall?

  15. What is the land cover for the ‘target’ biome?

  16. Can we understand the extent of forest conversion?

  17. Can we define transition areas using coarse resolution satellite data? Source: IFPRI reclassification of SLCR classes from Global Land Cover Classification Database (GLCCD – USGS/EDC 2000).

  18. Warm humid and subhumid tropics Source: Hydro1k (USGS EDC 2001). Hydro1k Basins Hydro-logical function: Basin extent

  19. Warm humid and subhumid tropics Source: A. Nelson, World Bank (2001). Terrain Type Roughness indicator

  20. Warm humid and subhumid tropics Source: Hydro1k – USGS EDC 2001; Terrain type: A. Nelson – World Bank (2001). Note: The shading differentiates between the upper and lower catchments of the basins. Basins by Terrain type Upper and lower catchments

  21. Mouth of the Amazon Andes – down to west coast Share of Basin Area by Terrain Type

  22. Critical Hydrological Function • Potential negative impacts on the flood regimes around major urban areas, based on.. • Watersheds (nested within Basins) • Urban population by watershed • Number of cities in each watershed

  23. Warm humid and subhumid tropics Latin American Watersheds

  24. Improved dataset for understanding extent and density of human settlements Administrative density surface – no detail in urban areas Combined urban & administrative density surface

  25. Comments • Useful to select characterization variables that are hierarchical (e.g., basins/ watersheds, biomes/ecoregions, LCCS) • Need to assess better what (if any) hydrological functions can be represented at this scale • Need to integrate pan-tropic analysis with sub-regional studies (Mesoamerica, Mekong) to address some of these questions and comments

  26. Questions • Are there better variables/approaches we could use in the stratification or in the identification of critical areas? • Can this scale of analysis be useful in linking cross-site or sub-regional studies? • How will we successfully integrate across teams?

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