Population Size and Conservation Strategies for the Northeast Rufous Gnateater, a Threatened Subspecies of a Relictual Atlantic Forest

Transcrição

1 Population Size and Conservation Strategies for the Northeast Rufous Gnateater, a Threatened Subspecies of a Relictual Atlantic Forest Ileyne Lopes Wesley Silva Universidade Estadual de Campinas, UNICAMP - Brazil

2 Introduction and Justification The Atlantic forest is a Hotspot of biodiversity MYERS et al., 2000

3 Introduction and Justification

4 Introduction and Justification But because of the pressure of deforestation has only 7.9 % of its original area SOS MATA ATLÂNTICA e INPE, 2012

5 Introduction and Justification Recent data demonstrates that hreats remain high 2000 to hectares deforested SOS MATA ATLÂNTICA; INPE, 2012

6 Introduction and Justification In Brazilian redlist 58% of the threatened species Are endemic of the Atlantic Forest MMA, 2003; MACHADO et al. 2008a,2008b

7 Introduction and Justification 58% of the threatened species Are endemic of the Atlantic Forest The majority of them are birds MMA, 2003; MACHADO et al. 2008a,2008b

8 Introduction and Justification 58% of the threatened species Are endemic of the Atlantic Forest 80% are in the Northeast MMA, 2003; MACHADO et al. 2008a,2008b

9 Study Area SOS MATA ATLÂNTICA; INPE, 2012

10 Study Area SOS MATA ATLÂNTICA; INPE, 2012

11 Study Area Baturité mountain SOS MATA ATLÂNTICA; INPE, 2012

12 Study Area Above 600 meters : Protected Area Baturité mountain SOS MATA ATLÂNTICA; INPE, 2012

13 14 threatened species ARKive

14 Populational status of species Stablish conservation measures Empirical data insufficient ARKive

15 ARKive

16 Endemic Vulnerable Northeast Rufous Gnateater Conopophaga lineata cearae Territorial and forest habits BROOKS et al., 1999; MMA, 2003

17 Objective Discover the size of the population of in the state of Ceará

18 Objective Discover the size of the population of in the state of Ceará Density Forest Area

19 Objective Discover the size of the population of in the state of Ceará Territories Density Forest Area

20 Objective Discover the size of the population of in the state of Ceará Territories Mapping Density Forest Area

21 Capture and banding Mist nets ---> 30 days ---> Sep and Oct 2011 Colored bands

22 Grid ---> Spot mapping Defining territories 40 m

23 Defining territories 6 visits Dec 2011 to Aug 2012

24 Banded

25 Unbanded

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27 Mapping the forest fragments 30,000 hectares Quickbird images 2008 ArcGIS 10.1

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31 Data analysis Minimum convex polygon method (MCP) Density (D) = Number of pairs in the sample Final study area Population estimates = Density * Area of the fragment

32 Results

33 Results Average territory 3,641 m 2 Standard error m 2 Density 0.6 pairs/ hectare Each pair ---> 1.6 hectares

34 Conopophagidae C. melanops C. lineata cearae 2,0 ha 1,6 ha 1,3 ha 1,0 ha 0,7 ha 18 g 24 g 26,5 g 20,6 g 12,2 g P. leucoptera DUCA et al., 2006; LIMA, 2008 Thamnophilidae T. caerulescens D. mentalis

35 13,736 hectares of forest 493 fragments

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37 Cities

38 < 5 ha 318 Results Area Number of fragments Can hold Less than 3 pairs of Gnateaters 64% 6 to 10 ha to to to to 289 pairs 501 to ; 508 7% > 1000 ha 2 760; ,000 individuals These are the representative areas for conservation according to: SOS MATA ATLÂNTICA; INPE, 2012

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42 Adding the non representative areas

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44 The connection of the fragments gets much better

45 Discussion Fragmentation context Population viability

46 Discussion Fragmentation context Population viability Locomotion capacity Permeabilidade da matriz

47 Discussion Fragmentation context Population viability Locomotion capacity Matrix permeability Improving matrix permeability is a crucial conservation strategy

48 We expect that our results can influence the decision-making process to implement the permeability of the landscape through project of : Planting seedlings

49 Agroforest systems

50 Environmental education of landowners

51 and their children

52 Environmental inspection

53 Good public policies

54 References: BROOKS, T.; TOBIAS, J.; BALMFORD, A. Deforestation and bird extinctions in the Atlantic forest. Animal Conservation, v. 2, p , DUCA, C.; GUERRA, T.J.; MARINI, M.A. Territory size of three Antbirds (Aves, Passeriformes) in an Atlantic Forest fragment in southeastern Brazil. Revista Brasileira de Zoologia, v. 23, n. 3, p , IUCN. The IUCN Red List of Threatened Species. Version < KENDEIGH, S. C. Measurement of Bird Populations. Ecological Monographs, Illinois, v. 14, n. 1, p , LIMA, A. M. X. Dinâmica populacional de aves de sub-bosque na Floresta Atlântica do Paraná. Dissertação de mestrado, UFPR, MACHADO, A. B. M.; DRUMMOND, G. M.; PAGLIA, A. P. (Eds.) Livro Vermelho da fauna brasileira ameaçada de extinção. Fundação Biodiversitas, MMA, Brasília, v. 1, 2008a. MACHADO, A. B. M.; DRUMMOND, G. M.; PAGLIA, A. P. (Eds.) Livro Vermelho da fauna brasileira ameaçada de extinção. Fundação Biodiversitas, MMA, Brasília, v. 2, 2008b. MYERS, N.; MITTERMEIER, R. A.; MITTERMEIER, C. G.; FONSECA, G. A. B.; KENT, J. Biodiversity hotspots for conservation priorities. Nature, v. 403, p , SOS MATA ATLÂNTICA; INPE. Atlas dos remanescentes florestais da Mata Atlântica, período Fundação SOS Mata Atlântica e Instituto Nacional de Pesquisas Espaciais, São Paulo, <

55 Acknowledgments:

56 Thank you!!