Insularization effects on acoustic signals of 2 suboscine Amazonian birds

Bicudo, Thiago; Anciães, Marina; Benchimol, Maíra; Peres, Carlos A.; Simões, Pedro Ivo

Artigo

Insularization effects on acoustic signals of 2 suboscine Amazonian birds

Environmental change may alter the communication systems of birds by imposing shifts in their acoustic signals. In tropical forests, vocally active species usually avoid overlapping signals in acoustic space by calling within narrow frequency ranges, whereas in forest islands a less saturated acoust...

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Autor principal:	Bicudo, Thiago
Outros Autores:	Anciães, Marina, Benchimol, Maíra, Peres, Carlos A., Simões, Pedro Ivo
Grau:	Artigo
Idioma:	English
Publicado em:	Behavioral Ecology 2020
Assuntos:	Adaptation Auditory Cue Bioacoustics Habitat Fragmentation Hydroelectric Power Plant Island Passerine Signaling Song Vegetation Structure Amazonia Aves Lipaugus Vociferans Tyranneutes Virescens Tyranni
Acesso em linha:	https://repositorio.inpa.gov.br/handle/1/17410

id	oai:repositorio:1-17410
recordtype	dspace
spelling	oai:repositorio:1-17410 Insularization effects on acoustic signals of 2 suboscine Amazonian birds Bicudo, Thiago Anciães, Marina Benchimol, Maíra Peres, Carlos A. Simões, Pedro Ivo Adaptation Auditory Cue Bioacoustics Habitat Fragmentation Hydroelectric Power Plant Island Passerine Signaling Song Vegetation Structure Amazonia Aves Lipaugus Vociferans Tyranneutes Virescens Tyranni Environmental change may alter the communication systems of birds by imposing shifts in their acoustic signals. In tropical forests, vocally active species usually avoid overlapping signals in acoustic space by calling within narrow frequency ranges, whereas in forest islands a less saturated acoustic space may allow variation in acoustic signals. Some signals are also adapted to optimize its propagation in the prevailing habitat. Despite a growing understanding of what drives acoustic variation, it is unclear if human-induced insularization of natural landscapes can unleash alterations in avian communication systems. We investigated the variability of acoustic signal properties in 2 suboscines birds (Lipaugus vociferans and Tyranneutes virescens) in islands within an artificial lake created by the damming of the Uatumã River, in Brazilian Amazonia. We tested if signal variability was related to variation in acoustic community proxies (island area and isolation), and vegetation structure by surveying 13 variable-sized forest sites and 2 mainland continuous forest sites. Bandwidth variation in L. vociferans songs was related to island area and isolation (N = 67 inds), but these relationships were not observed in T. virescens songs (N = 69 inds). Additionally, the lowest and peak frequencies of songs of both species were higher in islands with greater tree basal area. In both species, temporal properties of songs were not associated with variation in island characteristics. Our study suggests that land-use changes may lead to alterations in particular traits of acoustic signals for species for which songs are innate. © 2016 The Author. 2020-06-15T21:42:22Z 2020-06-15T21:42:22Z 2016 Artigo https://repositorio.inpa.gov.br/handle/1/17410 10.1093/beheco/arw070 en Volume 27, Número 5, Pags. 1480-1490 Restrito Behavioral Ecology
institution	Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection	INPA-RI
language	English
topic	Adaptation Auditory Cue Bioacoustics Habitat Fragmentation Hydroelectric Power Plant Island Passerine Signaling Song Vegetation Structure Amazonia Aves Lipaugus Vociferans Tyranneutes Virescens Tyranni
spellingShingle	Adaptation Auditory Cue Bioacoustics Habitat Fragmentation Hydroelectric Power Plant Island Passerine Signaling Song Vegetation Structure Amazonia Aves Lipaugus Vociferans Tyranneutes Virescens Tyranni Bicudo, Thiago Insularization effects on acoustic signals of 2 suboscine Amazonian birds
topic_facet	Adaptation Auditory Cue Bioacoustics Habitat Fragmentation Hydroelectric Power Plant Island Passerine Signaling Song Vegetation Structure Amazonia Aves Lipaugus Vociferans Tyranneutes Virescens Tyranni
description	Environmental change may alter the communication systems of birds by imposing shifts in their acoustic signals. In tropical forests, vocally active species usually avoid overlapping signals in acoustic space by calling within narrow frequency ranges, whereas in forest islands a less saturated acoustic space may allow variation in acoustic signals. Some signals are also adapted to optimize its propagation in the prevailing habitat. Despite a growing understanding of what drives acoustic variation, it is unclear if human-induced insularization of natural landscapes can unleash alterations in avian communication systems. We investigated the variability of acoustic signal properties in 2 suboscines birds (Lipaugus vociferans and Tyranneutes virescens) in islands within an artificial lake created by the damming of the Uatumã River, in Brazilian Amazonia. We tested if signal variability was related to variation in acoustic community proxies (island area and isolation), and vegetation structure by surveying 13 variable-sized forest sites and 2 mainland continuous forest sites. Bandwidth variation in L. vociferans songs was related to island area and isolation (N = 67 inds), but these relationships were not observed in T. virescens songs (N = 69 inds). Additionally, the lowest and peak frequencies of songs of both species were higher in islands with greater tree basal area. In both species, temporal properties of songs were not associated with variation in island characteristics. Our study suggests that land-use changes may lead to alterations in particular traits of acoustic signals for species for which songs are innate. © 2016 The Author.
format	Artigo
author	Bicudo, Thiago
author2	Anciães, Marina Benchimol, Maíra Peres, Carlos A. Simões, Pedro Ivo
author2Str	Anciães, Marina Benchimol, Maíra Peres, Carlos A. Simões, Pedro Ivo
title	Insularization effects on acoustic signals of 2 suboscine Amazonian birds
title_short	Insularization effects on acoustic signals of 2 suboscine Amazonian birds
title_full	Insularization effects on acoustic signals of 2 suboscine Amazonian birds
title_fullStr	Insularization effects on acoustic signals of 2 suboscine Amazonian birds
title_full_unstemmed	Insularization effects on acoustic signals of 2 suboscine Amazonian birds
title_sort	insularization effects on acoustic signals of 2 suboscine amazonian birds
publisher	Behavioral Ecology
publishDate	2020
url	https://repositorio.inpa.gov.br/handle/1/17410
_version_	1787143354940653568
score	11.755432

Insularization effects on acoustic signals of 2 suboscine Amazonian birds

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