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Feeling the heat: Elevated temperature affects male display activity of a lekking grassland bird

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Feeling the heat: Elevated temperature affects male display activity of a lekking grassland bird. / Gudka, Mishal; Santos, Carlos David; Dolman, Paul; Abad-Gómez, José M; Silva, João Paulo.

In: PLoS One, Vol. 14, No. 9, e0221999, 16.09.2019.

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Gudka, Mishal ; Santos, Carlos David ; Dolman, Paul ; Abad-Gómez, José M ; Silva, João Paulo. / Feeling the heat: Elevated temperature affects male display activity of a lekking grassland bird. In: PLoS One. 2019 ; Vol. 14, No. 9.

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@article{2fad6c1e8f3c4812aa5b915072ed2bf7,
title = "Feeling the heat: Elevated temperature affects male display activity of a lekking grassland bird",
abstract = "Most climate-species models relate range margins to long-term mean climate variables but lack mechanistic understanding of the ecological or demographic processes underlying the climate response. We examined the case of a climatically limited edge-of-range population of a medium-sized grassland bird, for which climate responses may involve a behavioural trade-off between temperature stress and reproduction. We hypothesised that temperature will be a limiting factor for the conspicuous, male snort-call display behaviour, and high temperatures would reduce the display activity of male birds. Using remote tracking technology with tri-axial accelerometers we classified and studied the display behaviour of 17 free-ranging male little bustards at 5 sites in the Iberian Peninsula. Display behaviour was related to temperature using two classes of Generalized Additive Mixed Models (GAMMs) at different temporal resolutions. GAMMs showed that temperature, time of the day and Julian date explained variation in display behaviour within the day, with birds snort-calling significantly less during higher temperatures. We also showed that variation in daily snort-call activity was related to average daytime temperatures, with our model predicting an average decrease in daytime snort-call display activity of up to 10.9% for the temperature increases projected by 2100 in this region due to global warming.For little bustards and more widely in lekking grassland birds, reduced display behaviour could impact inter- and intra-sex mating behaviour interactions through sexual selection and mate choice mechanisms, with possible consequences on mating and reproductive success of this species. The study provides a reproducible example for how accelerometer data can be used to answer research questions with important conservation inferences related to the impacts of climate change on a range of taxonomic groups. ",
keywords = "climate responses, Biological responses to climate change, global warming impact, little bustard, Tetrax tetrax, tri-axial accelerometer, remotely sensed behaviour",
author = "Mishal Gudka and Santos, {Carlos David} and Paul Dolman and Abad-G{\'o}mez, {Jos{\'e} M} and Silva, {Jo{\~a}o Paulo}",
year = "2019",
month = sep,
day = "16",
doi = "10.1371/journal.pone.0221999",
language = "English",
volume = "14",
journal = "PLoS One",
issn = "1932-6203",
publisher = "Public Library of Science",
number = "9",

}

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TY - JOUR

T1 - Feeling the heat: Elevated temperature affects male display activity of a lekking grassland bird

AU - Gudka, Mishal

AU - Santos, Carlos David

AU - Dolman, Paul

AU - Abad-Gómez, José M

AU - Silva, João Paulo

PY - 2019/9/16

Y1 - 2019/9/16

N2 - Most climate-species models relate range margins to long-term mean climate variables but lack mechanistic understanding of the ecological or demographic processes underlying the climate response. We examined the case of a climatically limited edge-of-range population of a medium-sized grassland bird, for which climate responses may involve a behavioural trade-off between temperature stress and reproduction. We hypothesised that temperature will be a limiting factor for the conspicuous, male snort-call display behaviour, and high temperatures would reduce the display activity of male birds. Using remote tracking technology with tri-axial accelerometers we classified and studied the display behaviour of 17 free-ranging male little bustards at 5 sites in the Iberian Peninsula. Display behaviour was related to temperature using two classes of Generalized Additive Mixed Models (GAMMs) at different temporal resolutions. GAMMs showed that temperature, time of the day and Julian date explained variation in display behaviour within the day, with birds snort-calling significantly less during higher temperatures. We also showed that variation in daily snort-call activity was related to average daytime temperatures, with our model predicting an average decrease in daytime snort-call display activity of up to 10.9% for the temperature increases projected by 2100 in this region due to global warming.For little bustards and more widely in lekking grassland birds, reduced display behaviour could impact inter- and intra-sex mating behaviour interactions through sexual selection and mate choice mechanisms, with possible consequences on mating and reproductive success of this species. The study provides a reproducible example for how accelerometer data can be used to answer research questions with important conservation inferences related to the impacts of climate change on a range of taxonomic groups.

AB - Most climate-species models relate range margins to long-term mean climate variables but lack mechanistic understanding of the ecological or demographic processes underlying the climate response. We examined the case of a climatically limited edge-of-range population of a medium-sized grassland bird, for which climate responses may involve a behavioural trade-off between temperature stress and reproduction. We hypothesised that temperature will be a limiting factor for the conspicuous, male snort-call display behaviour, and high temperatures would reduce the display activity of male birds. Using remote tracking technology with tri-axial accelerometers we classified and studied the display behaviour of 17 free-ranging male little bustards at 5 sites in the Iberian Peninsula. Display behaviour was related to temperature using two classes of Generalized Additive Mixed Models (GAMMs) at different temporal resolutions. GAMMs showed that temperature, time of the day and Julian date explained variation in display behaviour within the day, with birds snort-calling significantly less during higher temperatures. We also showed that variation in daily snort-call activity was related to average daytime temperatures, with our model predicting an average decrease in daytime snort-call display activity of up to 10.9% for the temperature increases projected by 2100 in this region due to global warming.For little bustards and more widely in lekking grassland birds, reduced display behaviour could impact inter- and intra-sex mating behaviour interactions through sexual selection and mate choice mechanisms, with possible consequences on mating and reproductive success of this species. The study provides a reproducible example for how accelerometer data can be used to answer research questions with important conservation inferences related to the impacts of climate change on a range of taxonomic groups.

KW - climate responses

KW - Biological responses to climate change

KW - global warming impact

KW - little bustard

KW - Tetrax tetrax

KW - tri-axial accelerometer

KW - remotely sensed behaviour

U2 - 10.1371/journal.pone.0221999

DO - 10.1371/journal.pone.0221999

M3 - Article

VL - 14

JO - PLoS One

JF - PLoS One

SN - 1932-6203

IS - 9

M1 - e0221999

ER -

ID: 163558719