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Ecosystem dynamics: disturbance and Recovery in the Cape Floristic Region of South Africa Wilson AM, May 12 2014, FIGSHARE, VALE Climate & Energy Inst.

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Presentation on theme: "Ecosystem dynamics: disturbance and Recovery in the Cape Floristic Region of South Africa Wilson AM, May 12 2014, FIGSHARE, VALE Climate & Energy Inst."— Presentation transcript:

1 Ecosystem dynamics: disturbance and Recovery in the Cape Floristic Region of South Africa Wilson AM, May 12 2014, FIGSHARE, VALE Climate & Energy Inst. Wilson AM et al (2011) Scaling up: linking field data and remote sensing with a hierarchical model. Geo Inf Sci 25(3)

2 Research Q: How does FIRE FREQUENCY vary in space and time? Burned areas from field & satellite ~1980 to present Topography90m LANDSAT (satellite) Vegetation Index30m *1970 to present MODIS (satellite) Vegetation Index250m* 2000 to present Daily temp and precipitation (gridded)10km* 1950 to present Biomass measurements 2x3m quadrts  0.1-12ha plots, 2009-10 (*resolution spectral bands) Antarctic Ocean Oscillation cycles CLOUD COVER index. DATA SOURCES

3 Further research Q: Fynbos conservation model (Wilson fire frequency ratio + biodiversity + maturity + land use index) biodiversity index Incl the 3 major INVASIVE species (Aus. Acacia and Wattle) maturity index for Fynbos, NOT necessarily related to veg height/density land use index “dispersal corridor”: (lack of) veg cover; arson, decr. link between veg quality/age with fire cause/frequency  GROUNDTRUTHING database correlate date, rainfall, fire, topography, species cover (density, diversity, alien spp) visible land markers with LANSAT spectrometry [~~ digital age SAPIA!]

4 Ecoregions – SANBI 2005 MAP Shortwave Infrared & Topographic – ESRI 1989-2010 Sonoran Desert EPA Level IV Ecoregions - ESRI 2010

5

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