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Understanding the deforestation wave and its consequences in the Amazon basin forest ”,

Understanding the deforestation wave and its consequences in the Amazon basin forest ”,. By: Jose Manuel Ochoa-Quintero Conservation Science Group University of Cambridge jmo34@cam.ac.uk. 1. Identification of deforestation stages at local scale.

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Understanding the deforestation wave and its consequences in the Amazon basin forest ”,

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  1. Understanding the deforestation wave and its consequences in the Amazon basin forest”, By: Jose Manuel Ochoa-QuinteroConservation Science GroupUniversity of Cambridge jmo34@cam.ac.uk

  2. 1. Identification of deforestation stages at local scale 1.1. The differentiation of the colonization stages/phases will be based on deforestation rate. Etter et al. 2006. Unplanned land clearing of Colombian rainforest: Spreading like disease? Rodrigues et al. 2009. Boom-and-Bust Development Across the Amazon Deforestation Frontier

  3. Cattle head Human pop. 2. Social and economical aspects of deforestation stages • Income from the forest • Distance to local market • Farm extension • Land use in the farm

  4. 3. Describe the characteristics of the remaining forest patches and their biological meaning 3.2. Biological meaning • Changes on monkeys and curassows communities 3.1. Landscape metrics • Contiguity index • Density index (No patches/100ha) • Percentage of forest interior Phase III Phase II Phase I

  5. 4. Identification of hunting patterns • Relationship number of prey and deforestation stage • Kilograms of biomass obtained from birds and mammals • Distance travelled by hunters to get a prey

  6. Key aspects • To identify the forest fragmentation pattern associated to each deforestation stage • To define how the community of curassows, forest rens and monkeys are affected by this process • To understand some of the hunting patterns associated to the deforestation stages

  7. Some results n=390 squares of 10 by 10 km

  8. Characteristics of the remaining forest patches Number of patches Largest patch index Stages Kruskal-Wallis=2.2 e-16 Kruskal-Wallis=2.2 e-16 E-F No significant difference test A-B No significant difference test B-E No significant difference test

  9. Cumulative area of forest patches according to patch size in the different deforestation stages

  10. B C D E F

  11. Luciana de Souza Soler Miriam Rothschild Scholarship Prof. William Sutherland Prof. Silvio de Barros FerrazThank you for your attention

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