Portal de Periódicos da CAPES

Artigo Produção Nacional Revisado por pares

BIBTEX RIS

Negative population trend for Chapada Flycatchers (Suiriri islerorum) despite high apparent annual survival

2010; Association of Field Ornithologists; Volume: 81; Issue: 3 Linguagem: Inglês

10.1111/j.1557-9263.2010.00279.x

1557-9263

Leonardo Fernandes França, Miguel Ângelo Marini,

Economic and Environmental Valuation

Journal of Field OrnithologyVolume 81, Issue 3 p. 227-236 Negative population trend for Chapada Flycatchers (Suiriri islerorum) despite high apparent annual survival Tendencia poblacional negativa de Suiriri islerorum a pesar de la alta tasa de sobrevivencia anual aparente Leonardo F. França, Corresponding Author Leonardo F. França Pós-graduação em Ecologia, IB, Universidade de Brasília, Brasília, DF, Brazil Corresponding author. Current address: Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, CEP 59072-970, Brazil. Email: [email protected]Search for more papers by this authorMiguel Â. Marini, Miguel Â. Marini Departamento de Zoologia, IB, Universidade de Brasília, Brasília, DF, BrazilSearch for more papers by this author Leonardo F. França, Corresponding Author Leonardo F. França Pós-graduação em Ecologia, IB, Universidade de Brasília, Brasília, DF, Brazil Corresponding author. Current address: Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, CEP 59072-970, Brazil. Email: [email protected]Search for more papers by this authorMiguel Â. Marini, Miguel Â. Marini Departamento de Zoologia, IB, Universidade de Brasília, Brasília, DF, BrazilSearch for more papers by this author First published: 26 August 2010 https://doi.org/10.1111/j.1557-9263.2010.00279.xCitations: 10Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstracten ABSTRACT Population size and trends are demographic parameters that can be used to help determine the threat of extirpation or extinction of bird populations and in determining management strategies. Chapada Flycatchers (Suiriri islerorum) are endemic to the Cerrado region of Brazil, dependent on open cerrado habitat, defend large territories, and their populations seem to be declining. From 2003 to 2007, we analyzed demographic parameters of a declining population of Chapada Flycatchers, using the rate at which territories became vacant and the size of the breeding population to ascertain the status of the population, and evaluated the relative contributions of apparent annual survival and recruitment rates to these trends. Territories became vacant at a mean rate of 13% per year, and 32% of all territories were vacated during our study. The current breeding population (20 pairs) was at least seven times smaller than the estimated carrying capacity of the reserve (141 territorial pairs). Estimated apparent annual survival probabilities (0.77 for breeders; 0.67 for nonbreeders) based on model averaging were comparable to those reported for other Neotropical passerines. Survival rates did not differ between the sexes and the estimated recruitment rate was 0.21. In many species, adult survival is the factor that most strongly influences population growth rates. However, the population of Chapada Flycatchers we studied is declining despite high annual survival rates, with low and variable breeding success probably causing the decline. Our results improve our understanding of the possible role of adult survival and breeding success in the decline of populations of small passerines in isolated reserves in the tropics. RESUMENes El tamaño poblacional y sus tendencias, son parámetros demográficos que pueden ser utilizados para determinar el grado de amenaza o peligro de extinción de poblaciones de aves y las estrategias de manejo a utilizarse. El Papamoscas Chapada (Suiriri islerorum) es endémico a la región de Cerrado en Brasil, depende de áreas abiertas de hábitat "cerrado" donde defienden un territorio de gran tamaño y sus poblaciones han ido en descenso. Para determinar el estatus del ave, de 2003–2007 analizamos los parámetros demográficos de una población del papamoscas que ha ido descenso, utilizando la tasa de territorios vacantes y el tamaño de la población reproductiva. Además evaluamos la contribución relativa de las tasas de sobrevivencia anual aparente y de reclutamiento. El promedio de territorios vacantes fue de 13%/año y un 32% quedaron vacantes a través del estudio. La población reproductiva (20 parejas) resultó siete veces más pequeña que la capacidad de acarreo del lugar (141 territorios de parejas). El estimado de probabilidad de sobrevivência anual aparente (0.77 para reproductores; 0.67 para no reproductores), basado en el modelo de promedio, resultó comparable para lo informado en paserinos Neotropicales. No hubo diferencias en la tasa de sobrevivencia entre sexos y el estimado de reclutamiento fue de 0.21. En muchas especies, la sobrevivencia de los adultos es el factor que más influye en las tasas de crecimiento poblacional. Sin embargo, la población de Chapada esta en descenso, a pesar de la alta tasa de sobrevivencia de los adultos, probablemente debido a un éxito reproductivo bajo y variable. Nuestros resultados ayudan a entender el posible rol de la sobrevivencia de adultos y el éxito reproductivo en el descenso de poblaciones de paserinos aislados en reservas de los trópicos. LITERATURE CITED Allee, W. C., A. Emerson, T. Park, and K. Schmidt. 1949. Principles of animal ecology. Saunders, Philadelphia , PA . Andrén, H. 1994. Effects of habitat fragmentation on birds and mammals in landscapes with different proportions of suitable habitat – a review. Oikos 71: 355– 366. Arcese, P. 1987. Age intrusion pressure and territory defense against floaters by male Song Sparrows. Animal Behaviour 35: 773– 784. Berec, L. K., E. Angulo, and F. Courchamp. 2006. Multiple allee effects and population management. Trends in Ecology and Evolution 22: 185– 191. Blake, J. G., and B. A. Loiselle. 2008. Estimates of apparent survival rates for forest birds in eastern Ecuador. Biotropica 40: 485– 493. Borges, F. J. A., and M. Â. Marini. 2010. Birds nesting survival in disturbed and protected Neotropical savannas. Biodiversity and Conservation 19: 223– 236. Brawn, J. D., J. R. Karr, and J. D. Nichols. 1995. Demography of birds in a Neotropical forest: effects of allometry, taxonomy, and ecology. Ecology 76: 41– 51. Briskie, J. V., and M. Mackintosh. 2004. Hatching failure increases with severity of population bottlenecks in birds. Proceedings of the National Academy of Sciences USA 101: 558– 561. Burnham, K. P., and D. R. Anderson. 1998. Model selection and inference: a practical information–theoretic approach. Springer-Verlag, New York . Cordero, P. J., J. M. Aparico, and J. P. Veiga. 2004. Parental genetic characteristics and hatching success in the Spotless Starling, Sturnus unicolor. Animal Behaviour 67: 637– 642. Faaborg, J., and W. J. Arendt. 1995. Survival rates of Puerto Rican birds: are islands really that different? Auk 112: 503– 507. França, L. F. 2008. Demografia e conservação de Suiriri islerorum, um passeriforme endêmico do Cerrado. Ph.D. dissertation. University of Brasília , Brasília , DF , Brazil . França, L. F., and M. Â. Marini. 2009. Low and variable reproductive success of a Neotropical tyrant-flycatcher, Chapada Flycatcher (Suiriri islerorum). Emu 109: 265– 269. Freitag, S., and A. S. Van Jaarsveld. 1997. Relative occupancy, endemism, taxonomic distinctiveness and vulnerability: prioritizing regional conservation actions. Biodiversity and Conservation 6: 211– 232. Gaston, K. J. 1994. Rarity. Chapman & Hall, London , UK . Google Earth Program 4.1 beta version[online]. 2007. Images: DigitalGlobe, Europa Technologies e TerraMetrics. Available at: (20 July, 2007). Greenberg, R., and J. Gradwohl. 1997. Territoriality, adult survival, and dispersal in the Checker-throated Antwren in Panama. Journal of Avian Biology 28: 103– 110. Johnston, J. P., W. J. Peach, R. D. Gregory, and S. A. White. 1997. Survival rates of tropical and temperate passerines: a Trinidadian perspective. American Naturalist 150: 771– 789. Jullien, M., and J. Clobert. 2000. The survival value of flocking in Neotropical birds: reality or fiction? Ecology 81: 3416– 3430. Karr, J. R., J. D. Nichols, M. K. Klimkiewicz, and J. D. Brawn. 1990. Survival rates of birds of tropical and temperate forests – will the dogma survive? American Naturalist 136: 277– 291. Kendall, W. L., J. E. Hines, and J. D. Nichols. 2003. Adjusting multi-state capture-recapture models for misclassification bias: manatee breeding proportions. Ecology 84: 1058– 1066. Klink, C. A., and R. B. Machado. 2005. Conservation of the Brazilian Cerrado. Conservation Biology 19: 707– 713. Lebreton, J. D., K. P. Burnham, J. Clobert, and D. R. Anderson. 1992. Modeling survival and testing biological hypotheses using marked animals: a unified approach with case studies. Ecological Monographs 62: 67– 118. Lepson, J. K., and L. A. Freed. 1995. Variation in male plumage and behavior of the Hawaii Akepa. Auk 112: 402– 414. Lopes, L. E., and M. Â. Marini. 2005. Low reproductive success of Campo Suiriri (Suiriri affinis) and Chapada Flycatcher (S. islerorum) in the central Brazilian Cerrado. Bird Conservation International 15: 337– 346. Lopes, L. E., and M. Â. Marini. 2006. Home range and habitat use by Suiriri affinis and Suiriri islerorum (Aves: Tyrannidae) in the Central Brazilian Cerrado. Studies on Neotropical Fauna and Environment 41: 87– 92. Lopez-Sepulcre, A., and H. Kokko. 2005. Territorial defense, territory size, and population regulation. American Naturalist 166: 317– 329. Low, M., and T. Pärt. 2009. Patterns of mortality for each life-history stage in a population of the endangered New Zealand Stitchbird. Journal of Animal Ecology 78: 761– 771. Marini, M. Â., M. Barbet-Massin, L. E. Lopes, and F. Jiguet. 2009. Predicted climate-driven bird distribution changes and forecasted conservation conflicts in a Neotropical savanna. Conservation Biology 23: 1558– 1567. Marini, M. Â., and F. I. Garcia. 2005. Bird conservation in Brazil. Conservation Biology 19: 665– 671. Morton, E. S., K. C. Derrickson, and B. J. M. Stutchbury. 2000. Territory switching behavior in a sedentary tropical passerine, the Dusky Antbird (Cercomacra tyrannina). Behavioral Ecology 11: 648– 653. Morton, E. S., and B. J. M. Stutchbury. 2000. Demography and reproductive success in the Dusky Antbird, a sedentary tropical passerine. Journal of Field Ornithology 71: 493– 500. Nichols, J. D., J. E. Hines, K. H. Pollock, R. L. Hinz, and W. A. Link. 1994. Estimating breeding proportions and testing hypotheses about costs of reproduction with capture–recapture data. Ecology 75: 2052– 2065. Orell, M., K. Koivula, S. Rytkonen, and K. Lahti. 1994. To breed or not to breed: causes and implications of non-breeding habit in the Willow Tit Parus montanus. Oecologia 100: 339– 346. Parker, T. H., C. D. Becker, B. K. Sandercock, and A. E. Agreda. 2006. Apparent survival estimates for five species of tropical birds in an endangered forest habitat in western Ecuador. Biotropica 38: 764– 769. Pradel, R., J. E. Hines, J. D. Lebreton, and J. D. Nichols. 1997. Capture-recapture survival models taking account of transients. Biometrics 53: 60– 72. Pradel, R., and J. D. Lebreton. 1999. Comparison of different approaches to the study of local recruitment of breeders. Bird Study 46: 74– 81. Ralph, C. J., and S. G. Fancy. 1995. Demography and movements of Apapane and Iiwi in Hawaii. Condor 97: 729– 742. Reed, E. T., G. Gauthier, R. Pradel, and J. D. Lebreton. 2003. Age and environmental conditions affect recruitment in Greater Snow Geese. Ecology 84: 219– 230. Ribeiro, J. F., and B. M. T. Walter. 1998. Fitofisionomias do bioma Cerrado. In: Cerrado: ambiente e flora ( S. M. Sano and S. P. Almeida, eds.), pp. 91– 166. EMBRAPA, Planaltina , DF , Brazil . Saether, B. E., and O. Bakke. 2000. Avian life history variation and contribution of demographic traits to the population growth rate. Ecology 81: 642– 653. Sandercock, B. K., S. R. Beissinger, S. H. Stoleson, R. R. Melland, and C. R. Hughes. 2000. Survival rates of a Neotropical parrot: implications for latitudinal comparisons of avian demography. Ecology 81: 1351– 1370. Shaffer, T. L. 2004. A unified approach to analyzing nest success. Auk 121: 526– 540. Silva, J. M. C. 1997. Endemic bird species and conservation in the Cerrado region, South America. Biodiversity and Conservation 6: 435– 450. Smith, S. M. 1978. The ''underworld'' in a territorial sparrow: adaptive strategy for floaters. American Naturalist 112: 571– 582. Smith, J. N. M., and P. Arcese. 1989. How fit are floaters? Consequences of alternative territorial behaviors in a nonmigratory sparrow. American Naturalist 133: 830– 845. Stahl, J. T., and M. K. Oli. 2006. Relative importance of avian life-history variables to population growth rate. Ecological Modeling 198: 23– 39. White, G. C., and K. P. Burnham. 1999. Program MARK – survival estimation from populations of marked animals. Bird Study 46: 120– 139. Woodworth, B. L., J. Faaborg, and W. J. Arendt. 1999. Survival and longevity of the Puerto Rican Vireo. Wilson Bulletin 111: 376– 380. Zack, S., and B. J. Stutchbury. 1992. Delayed breeding in avian social systems: the role of territory quality and ''floater'' tactics. Behaviour 123: 275– 280. Zimmer, K. J., A. Whittaker, and D. C. Oren. 2001. A cryptic new species of flycatcher (Tyrannidae: Suiriri) from the Cerrado region of central South America. Auk 118: 56– 78. Citing Literature Volume81, Issue3September 2010Pages 227-236 ReferencesRelatedInformation