Sanz Cid Juan José

Investigación

Nuestro objetivo es comprender las causas ecológicas y consecuencias evolutivas de las variaciones en las estrategias vitales. La mayoría de nuestro trabajo se basa en la recopilación de datos a nivel individual sobre la reproducción y supervivencia de dos especies de aves insectívoras nidícolas en el centro peninsular (Montes de Toledo), el Carbonero y Herrerillo comunes. La investigación busca comprender la dinámica del proceso evolutivo en respuesta a variaciones ambientales relevantes (por ejemplo, cambio climático, la pérdida y fragmentación del hábitat). Queremos comprender cómo la evolución ha dado lugar a fenotipos y rasgos de historia de vida en las aves, tratando de identificar las causas que modulan la eficacia biológica de los individuos y poblaciones en el medio natural.

Proyectos vigentes

Título: Mecanismos de respuesta de las aves ante dos escenarios de cambio global: cambio climático y urbanización.

Mechanisms of response of birds to two scenarios of global change: climate change and urbanization.

_{Reference: CGL2016-79568-C3-1-P}

_{Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia}

_{Research team: Juan José Sanz (IP) y Juan Carlos Senar}

Global change is causing large negative impacts on biodiversity. Identifying and understanding proximate and ultimate causes of these impacts, and mitigate their effects, is a priority for current human societies. To understand the effects on the organisms we need to perform studies with a broad spatio-temporal scale, with a reasonable environmental variability, and including different parameters, which could potentially affect the adaptive capacity of the individuals.

Phenotypic differences within a species might be originated by genetic drift, by phenotypic plasticity, or by adaptive divergence (selection). For local adaptation to occur, some individuals should have fitness advantages. To demonstrate a process of adaptation in any scenario, and therefore in one of global change, would need knowledge on phenotypic variability, population genetic properties and dynamics, and characterization of the direction of the natural selection acting on these traits. An additional topic of recent interest is the role of habitat heterogeneity in promoting local adaptation at relatively short spatio-temporal scales. When selection gradient through alternate environments is strong enough to reduce the reproductive opportunities of immigrants, a local adaptation, which reduces genetic flow, might occur ("ecological speciation" or "isolation by adaptation"). Proximate mechanisms of this speciation type are largely unknown.

Our aim in the present project is studying the individual and population responses and consequences of different bird species in two global change scenarios: increasing urbanization and climate change. Our main targets are: (1) To identify local responses to global change; (2) Testing hypotheses on the existence of local adaptation processes based on phenotypic plasticity; and (3) Testing hypotheses on the existence of local adaptation processes based on microevolutionary changes ("contemporary evolution").

Publicaciones recientes

Bueno-Enciso, J., Núñez-Escribano, D. and Sanz, J.J. (2017) Contaminación acústica y el canto de las aves: un estudio con carboneros Parus major en la provincia de Toledo. Anuario Ornitológico de Toledo, 2008-2013: 188-203.

Serrano-Davies, E., Araya-Ajoy, Y.G., Dingemanse, N.J. and Sanz, J.J. (2017) Personality-related differences in response to habitat in Mediterranean blue tits. Ethology, 123: 861-869.

González-Braojos, S., Sanz, J.J. and Moreno, J. (2017) Decline of a montane Mediterranean Pie Flycatcher Ficedula hypoleuca population in relation to climate. Journal of Avian Biology, 48: 1383-1393.

Bueno-Enciso, J., Barrientos, R. and Sanz, J.J. (2017) Incubation behaviour of Blue Cyanistes caeruleus and Great Tits Parus major in a Mediterranean habitat. Acta Ornithologica, 52: 21-34.

Serrano-Davies, E. and Sanz, J.J. (2017) Habitat structure modulates nestling diet composition and fitness of Blue Tits Cyanistes caeruleus in the Mediterranean region. Bird Study, 64:295-305.

Bueno-Enciso, J., Barrientos, R., Ferrer, E.S. and Sanz, J.J. (2017) Do extended incubation recesses carry fitness costs in two cavity-nesting birds? Journal of Field Ornithology, 88: 146-155.

Serrano-Davies, E., Barrientos, R. and Sanz, J.J. (2017) The role of nest-box density and placement on occupation rates and breeding performance: a case study with Eurasian Blue Tits. Ornis Fennica, 94: 21-32.

Barrientos, R., Bueno-Enciso, J. and Sanz, J.J. (2016) Hatching asynchrony vs. foraging efficiency: the response to food availability in specialist vs. generalist tit species. Scientific Reports, 6: 37750.

Ferrer, E.S., García-Navas, V., Sanz, J.J. & Ortego, J. (2016). The strength of the association between heterozygosity and probability of inter-annual local recruitment increases with environmental harshness in blue tits. Ecology and Evolution, 6: 8857-8869.

Bueno-Enciso, J., Ferrer, E.S., Barrientos, R. and Sanz, J.J. (2016) Habitat structure influences the song characteristics within a population of Great tits Parus major. Bird Study, 63: 359-368.

Bueno-Enciso, J., Ferrer, E.S., Barrientos, R. and Sanz, J.J. (2016) Effect of nestbox type on the breeding performance of two secondary hole-nesting passerines Parus major. Journal of Ornithology, 157: 759-772.

Bueno-Enciso, J., Ferrer, E.S., Barrientos, R., Serrano-Davies, E. and Sanz, J.J.(2016) Habitat fragmentation influences nestling growth in Mediterranean blue and great tits. Acta Oecologica, 70: 129-137.

Ferrer, E.S., García-Navas, V, Bueno-Enciso, J., Barrientos, R., Serrano-Davies, E., Cáliz-Campal, C., Sanz, J.J. and Ortego, J. (2016) The influence of landscape configuration and environment on population genetic structure in a sedentary passerine: insights from loci located in different genomic regions. Journal of Evolutionary Biology, 29: 205-219.