Understanding the deforestation wave and its consequences in

Understanding the deforestation wave and its consequences in the Amazon basin forest ”, By: Jose Manuel Ochoa-Quintero Conservation Science Group University of Cambridge jmo 34@cam. ac. uk

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

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

3. Describe the characteristics of the remaining forest patches and their biological meaning 3. 1. Landscape metrics 3. 2. Biological meaning • Contiguity index • • Density index (No patches/100 ha) • Percentage of forest interior Phase III Phase II Changes on monkeys and curassows communities Phase I

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

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

Some results n=390 squares of 10 by 10 km Stage s Def. activity Def. Extent Numb er A 0 to 0. 3 <5% 50 B 0. 3 to 3 <25% 70 C >3 <40% 55 D >3 40% to 60% 38 E >3 60% to 100% 51 F 0. 3 to >75% 22

Largest patch index Number of patches Characteristics of the remaining forest patches Stages Kruskal-Wallis=2. 2 e-16 A-B No significant difference test B-E No significant difference test Kruskal-Wallis=2. 2 e-16 E-F No significant difference test

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

B C D E F

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