Listar Biología por autor "84516193-5549-4c28-ab3e-61253b425405"
Mostrando ítems 1-20 de 74
-
A test of the Acoustic Adaptation Hypothesis in three types of tropical forest: degradation of male and female Rufous-and-white Wren songs
Graham, Brendan; Sandoval Vargas, Luis Andrés; Dabelsteen, Torben; Mennill, Daniel J. (2016)Many animals produce complex vocalizations that show pronounced variation between populations. The Acoustic Adaptation Hypothesis helps to explain this variation, suggesting that acoustic signals are optimized for transmission ... -
An overview of bird records committees in the Neotropics
Freile, Juan; Solano Ugalde, Alejandro; Kenefick, Martyn; Lees, Alexander; Piacentini, Vítor; Sandoval Vargas, Luis Andrés; Valqui, Thomas; Angulo Pratolongo, Fernando; Miranda, Jonathan; Claessens, Olivier; Sharpe, Christopher (2018)Neotropical bird records committees have been growing in numbers, remit and prominence in recent years. This feature – by members of those committees – explains how and why committees were established and encourages birders ... -
Anolis insignis (Decorated anole). Predation attempt
Jiménez, Ronald; Sandoval Vargas, Luis Andrés (2019)Two jays attacking an A. insignis on a liana 10 m above the ground. -
Artificial cavities and substrates for cavity-nesting birds in Neotropical urban environments: A novel resource or the last opportunity to breed?
Sandoval Vargas, Luis Andrés; Rojas Valerio, Emmanuel; Retana López, Marco; Gutiérrez Vargas, José Ignacio; Barrantes Montero, Gilbert (2021)Urban development reduces the abundance of most natural resources for some birds but also provides new opportunities for others. One group that is more likely affected by urban development is the cavity-nesting species ... -
Asociación entre la morfología alar y el uso del hábitat en seis especies de palomas (Columbidae) neotropicales
Ocampo Vargas, Diego; Alvarado Barrantes, Angélica; Álvarez, María José; Ríos Acuña, Adrián; Barrantes Montero, Gilbert; Sandoval Vargas, Luis Andrés (2019)Biomechanics, behavior, and natural history influence wing dimension and shape. Wing design often correlates with features of the habitat in which each species is found. Doves and pigeons (Columbidae family) range from ... -
Cambios en el comportamiento territorial y vocalizaciones de la avifauna a lo largo del gradiente urbano y de ruido antropogénico
Bartolo Gutiérrez, Raúl Antonio (2023)La urbanización a impulsado diferentes cambios drásticos en los hábitats naturales por el aumento de las áreas urbanas, generando gradientes urbanos y gradientes de ruido antropogénico. Como consecuencia de los cambios ... -
Changes in escape behaviour of black iguanas (Ctenosaura similis) over an anthropogenic disturbance gradient
Panwar, Pooja; Gómez Ruiz, Pilar Angélica; Zipple, Matthew; Sandoval Vargas, Luis Andrés (2021)Studies on the impact of human activity on animal behaviour are critical for understanding the extent to which humans affect ecological dynamics. Previous studies have found that human presence alters antipredator behaviours, ... -
Changes in nesting sites abundance and their use by woodpeckers along an urban gradient: a ten-year comparison
Protti Sánchez, Francesca; Sandoval Vargas, Luis Andrés (2019)Woodpeckers nesting substrate abundance may be reduced by urban expansion, negatively affecting their reproduction. Long-term studies in the tropics are rare but valuable to estimate how urban development has affected ... -
Characteristics of male Spot-bellied Bobwhite (Colinus leucopogon) song during territory establishment
Sandoval Vargas, Luis Andrés; Barrantes Montero, Gilbert (2012)In song-learning birds, male song shows a large inter-individual variation that frequently plays an important role in intra- and inter-sexual selection. In other bird groups, such as Galliformes, song learning is absent, ... -
Cocoon web induced by Eruga telljohanni (Ichneumonidae: Pimplinae) in Leucauge sp. (Tetragnathidae)
Barrantes Montero, Gilbert; Sandoval Vargas, Luis Andrés; Hanson Snortun, Paul (2017)The hosts and cocoon webs of koinobiont-ectoparasitic wasps in the genus Eruga Townes in Townes & Townes, 1960 are known for only two species. We describe here the host spider and cocoon web of a third Eruga species: E. ... -
Conceptual and statistical problems with the use of the Shannon-Weiner entropy index in bioacoustic analyses
Sandoval Vargas, Luis Andrés; Barrantes Montero, Gilbert; Wilson, David R. (2018-04-03)Information theory and its indices were developed for human communication to predict the amount of information transferred in a message. One such index, the Shannon-Weiner index (SWI), has often been used to analyse ... -
Conspecific and predator perception of the Red Oophaga pumilio Morph from the Central Caribbean of Costa Rica
Chaves Acuña, Wagner; Sandoval Vargas, Luis Andrés; Bitton, Pierre Paul; Barrantes Montero, Gilbert; García Rodríguez, Adrián (2020-11-04)Strawberry Poison Frogs (Oophaga pumilio) are common members of leaf litter lowland communities in Central America and exhibit several color morphs throughout their distribution. Color plays a determinant role during intra- ... -
Description of the nest and eggs of the green thorntail (discosura conversii)
Sánchez Pérez, Julio E.; Conejo Barboza, Karla; Sánchez Morales, César; Calderón Franco, Diego; Sandoval Vargas, Luis Andrés (2016-06-15)The breeding biology of the genus Discosura (Trochilidae) is poorly known. Here, we describe in detail the nest and eggs of the Green Thorntail (D. conversii). We analyze two nests; one was collected with two eggs at Limón ... -
Different Messages are Transmitted by Individual Duet Contributions and Complete Duets in a Species with Highly Overlapped Duets
Sandoval Vargas, Luis Andrés; Juárez Jovel, Roselvy; Garnier Villarreal, Mauricio (2018)Background: Duet function hypotheses have been mostly studied in bird species that produce duets with male and female solo songs. However, in order to understand if patterns of duet function are similar across all duetting ... -
Does the distance to forests or buildings influence great kiskadee (Pitangus sulphuratus) nesting site selection?
Corrales Moya, Josué; Sandoval Vargas, Luis Andrés (2021)The expansion of human settlements has produced significant changes in natural ecosystems by fragmenting and reducing their area. Those changes influence the availability of natural and artificial sites used to build nests ... -
Dual Function of Chip Calls Depending on Changing Call Rate Related to Risk Level in Territorial Pairs of White-Eared Ground-Sparrows
Méndez Vázquez, Carolina; Sandoval Vargas, Luis Andrés (2017-03)Different mechanisms have been proposed for encoding information into vocalizations: variation of frequency or temporal characteristics, variation in the rate of vocalization production, and use of different vocalization ... -
Eavesdropping avoidance and sound propagation: the acoustic structure of soft song
Vargas Castro, Luis Esteban; Sandoval Vargas, Luis Andrés; Searcy, William A. (2017-12)Many species use low-amplitude (soft) song during close range interactions with conspecifics, such as in aggressive encounters or courtship displays. It has been suggested that soft song is adapted to limit eavesdropping ... -
Efecto del aislamiento urbano espacial y temporal en la diversidad genética, características acústicas y morfológicas de Melozone Leucotis (Aves: Passerellidae)
Cueva Roblez, Luis Fernando (2023)La urbanización genera alteraciones en los ecosistemas, incluyendo la fragmentación de los hábitats naturales, lo que produce el aislamiento de poblaciones de una misma especie. Como consecuencia, se espera que el flujo ... -
Effect of El Niño and La Niña on abundance of frugivorous and nectarivorous terrestrial birds in three tropical forests
Barrantes Montero, Gilbert; Sandoval Vargas, Luis Andrés (2019-05-14)El Niño and La Niña climatic oscillations have dramatic effects on population dynamics and community structure of different animals. For marine birds, El Niño phenomenon drastically increases their mortality and reduces ... -
Effect of urbanization on the avifauna in a tropica metropolitan area
Biamonte, Estaban; Sandoval Vargas, Luis Andrés; Chacón Madrigal, Eduardo; Barrantes Montero, Gilbert (2011)The rapid and unplanned expansion of urban areas is a common pattern in neotropical developing countries. Urbanization has eliminated or drastically altered large areas of natural habitats used by the rich neotropical ...