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Effects of Land Use Change on Mammals Across Dynamic Frontiers in the Amazon Basin. Claudia Azevedo-Ramos, Oswaldo de Carvalho, Jr., Ana Cristina M. Oliveria (IPAM); Lisa M. Curran & Alice McDonald (Yale University); Britaldo Silveira Soares-Filho (UFMG), Ane A.C. Alencar (IPAM) &
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Effects of Land Use Change on Mammals Across Dynamic Frontiers in the Amazon Basin Claudia Azevedo-Ramos, Oswaldo de Carvalho, Jr., Ana Cristina M. Oliveria (IPAM); Lisa M. Curran & Alice McDonald (Yale University); Britaldo Silveira Soares-Filho (UFMG), Ane A.C. Alencar (IPAM) & Daniel C. Nepstad (WHRC/IPAM)
Major Questions & Objectives • Determine how land use change scenarios (BAU & GOV 2010-2050) affect biodiversity across the Amazon Basin; • Identify the specific species and ecoregions under threat; • Conduct nested-scale simulation and empirical analyses within dynamic frontiers of BR163 & Mato Grosso; • Determine species-specific and spatially-explicit effects of forest cover loss, fire and land use type on vertebrate populations; scale-up to basin-wide analyses; • Influence biodiversity conservation and management priorities/approaches toward regions undergoing dynamic land use change and outside of protected areas incl. private landholders
Conservative Methods for Initial Assessment of Effects of Land Use Change on Mammals • 164 mammal species (non-volant; non-aquatic); 23 Families, 74 Genera; • 97%-15% (median = 89%) of geo-range in Amazon basin; Assumptions: habitat widespread & evenly distributed throughout range; most optimistic range projected by experts – often limited sampling points; mammals most resilient w large ranges; Prelim. Analyses: No key habitats or corridors removed; No spatially-explicit dynamics of forest/non-forest; Initial Analyses did NOT include: logged/hunted/burned/climate change or fine scale 9 habitat type associations with probability of movement/use; but underway in next iteration with refined models
500 km 2050 BAU Scenario: Deforested 2,698,735 km2 Forest 3,320,409 km2 Non-forest 1,497,685 km2 Soares-Filho et al. 2004
500 km 2050 Governance Scenario: Deforested 1,655,734 km2 Forest 4,363,410 km2 Non-forest 1,497,685 km2 Soares-Filho et al. 2004
% Amazon Range Deforested # species (164 spp. examined)
Critical Habitats for Imperiled Species – Full Species Ranges (Imperiled: n=48; >40% Amazonian Range Deforested Under BAU 2050)
Critical Habitats for Imperiled Species – Forest in BAU 2050 (Imperiled: n=48; >40% Amazonian Range Deforested Under BAU 2050)
Critical Habitats for Imperiled Species – Forest in GOV 2050 (Imperiled: n=48; >40% Amazonian Range Deforested Under BAU 2050)
Critical Habitats for Imperiled Species – Full Species Ranges (Imperiled: n=12; >40% Amazonian Range Deforested Under GOV 2050)
Critical Habitats for Imperiled Species – Forest in GOV 2050 (Imperiled: n=12; >40% Amazonian Range Deforested Under GOV 2050)
Callitrichidae Mico argentatus Silvery Marmoset 89% Range Loss BAU 2050
Callitrichidae Mico argentatus Silvery Marmoset Gov Saves 45% 80.4% Outside PAs, ARPA & Ind. Res. GOV 2050
Atelidae Ateles marginatus White-whiskered Spider Monkey 69% Range Loss BAU 2050
Atelidae Ateles marginatus White-whiskered Spider Monkey Gov Saves 35% 54% Outside PAS, ARPA & Indig Res. GOV 2050
High Hunting Pressure Nomadic/Seasonal Habitat Use Large Ranges Epidemics from Livestock Diseases Major Prey Large Cats Tayassuidae Tayassu pecari White-lipped Peccary BAU 2050 37% Range Loss
Tayassuidae Tayassu pecari White-lipped Peccary 66% Outside PAs, ARPA Indig. Gov Saves 15% Range GOV 2050
Heavy Hunting Pressure Prey Base Eroded Will Prey on Livestock Largest Contiguous Ranges Remaining within Amazon Basin; 36% Range Loss Felidae Panthera onca Jaguar BAU 2050
Felidae Panthera onca Jaguar 65% Outside PAs, ARPA Indig R. Gov Saves 14% but also Prey base GOV 2050
High Hunting Pressure Critical Habitats w/in Range Epidemics from Livestock Diseases Major Prey of Large Cats Cervidae Blastocerus dichotomus Marsh Deer BAU 2050 41% Historical Range Loss
Cervidae Blastocerus dichotomus Marsh Deer 66% Outside PAs, ARPA, Ind. Reserves; Gov Saves 16% Range GOV 2050
Current Marsh Deer (Blastocerus dichotomus)Range 1,084,523 km2
Amazon Region Protected Areas Program (ARPA) Areas in BAU 2050: Deforested 381,775km2 Forest 176,122 km2 Non-forest 50,391 km2
ARPA Areas in GOV 2050: Deforested 71,902 km2 Forest 485,995 km2 Non-forest 50,391 km2
BAU 2010 Deforested 84,712 km2 Forest 473,185 km2 Non-forest 50,391 km2
BAU 2020 Deforested 149,947 km2Forest 407,950 km2 Non-forest 50,391 km2
BAU 2030 Deforested 235,982 km2 Forest 321,915 km2 Non-forest50,391 km2
BAU 2040 Deforested 321,941 km2 Forest235,956 km2 Non-forest 50,391 km2
BAU 2050 Deforested 381,775 km2 Forest176,122 km2 Non-forest50,391 km2
Governance Critical to Maintain Forest Cover in ARPA Sites 46% differential area loss
WWF’s Priority Conservation Areas SWA (Global 200) 1. SWA Moist Forest 2. Jurua-Purus Moist Forest 3. Madeira-Purus Moist Forest 4. Madeira-Tapajos Moist Forest 2 1 3 4 Peru Bolivia SWA Global 200
Forest Loss Within Ecoregions BAU 2050 GOV 2050 % Ecoregion Deforested
Deforestation Within Ecoregions 75% 83% 75% % Deforested
86% of Remaining Ombrofila EstacionalForests in BAU 2050 in Protected Areas/Indigenous Reserves 100 km BAU 2050 – 15% Forest 184,076 km2 XINGU
Critical Importance of Privately-Owned Land Management (APP & Reserva Legal) within Mato Grosso Dry Forests • Distinctive forest communities • Region harbors 46 mammalian species; • 57% spp. on CITES; inc. flagship species, heavily hunted and vulnerable species; • Potentially >85% habitat loss; • Critical source/sink habitats esp. for Xingu/Indigenous lands; • Private holdings critical for biodiversity: 82,000 ha; 52% forested; APP riparian zones maintained 6,000 ha; • Document before-after recovery from fire
Current Analyses with Future Activities • 88 mammal species examined within BR 163; • Conducting spatially-explicit analyses w simulations (99-02) within 4 subregions along frontier incl BAU/GOV 2010-2050; • Will incorporate species-specific habitat use, hunting pressure with 1) logged, 2) pasture, 3) mechanized agri; 4) smallholders; and 5) burned area or fire vulnerability models; • Address lack of ecological data OUTSIDE PAs & within specific habitats/uses/vulnerability within the matrix; • Simulate a suite of decision rules re spatial extent of crossings, hunting annuli and recovery
Summary Results to Date • Effective “governance” critical for mammalian conservation in the Amazon basin; • ARPA essential (esp. for > 21 highly vulnerable primate species), but establishment/demarcation alone insufficient; • Focal ecoregions identified for concerted management efforts with high mammalian diversity/vulnerability: Tapajos-Xingu, Purus-Madeira & Madeira-Tapajos; Mato Grosso • Highly vulnerable taxa (BAU 2050) have 54-87% of range outside PAs, ARPA & Indigenous Reserves- • Even if lose 30-40% of habitat, predict synergistic effects of logging/hunting, fragmentation, burned areas with ecological interactions esp. in key ecoregions with high land cover change;