Responses to global change in a river passerine

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dc.check.date2022-01-16T11:54:04Z
dc.check.embargoformatApply the embargo to the e-thesis on CORA (If you have submitted an e-thesis and want to embargo it on CORA)en
dc.check.entireThesisEntire Thesis Restricted
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dc.check.opt-outNot applicableen
dc.check.reasonThis thesis is due for publication or the author is actively seeking to publish this materialen
dc.contributor.advisorO'Halloran, Johnen
dc.contributor.advisorQuinn, Johnen
dc.contributor.authorFernández-Bellon, Darío
dc.contributor.funderUniversity College Corken
dc.date.accessioned2019-01-17T11:54:04Z
dc.date.issued2018
dc.date.submitted2018
dc.description.abstractHuman-induced environmental change is affecting biodiversity across the world. River systems and species associated with these habtitats are particularly vulnerable to the different drivers of global change (e.g. land use, climate change, pollution). Understanding how species respond to these drivers is key for any attempts to address and minimise the effects of global change. In this thesis I focus on a river passerine, the white-throated dipper Cinclus cinclus, as a model to assess the effects of two of the main drivers affecting river ecosystems (land use and climate change) on different ecological traits across multiple scales and life stages. Breeding phenology (Chapter 2) was influenced by climate and land use at different scales, but the interactive effect of climate and land use was significant only at local scales. Lay dates were advanced for nests in areas dominated by farmland and under conditions of increased rainfall and warmer temperatures. Land use also affected stress hormones in developing nestlings (Chapter 3): higher forest cover in the riparian area was linked to lower nestling stress hormone levels but had no apparent effect on morphological traits traditionally associated with nestling development. This land use signal on stress hormones however, was no longer evident in later life (Chapter 4), when stress hormone variation had a strong year component, likely due to weather patterns. Climate also appeared to be associated with long-term morphological change (Chapter 5). Female and male dippers experienced a relative shortening of the wing in relation to body size, reducing dimorphism between the sexes during a period concurrent with increased magnitude and fluctuations in river flow conditions. Overall, these findings suggest that dippers are adjusting their phenology, physiology and morphology in response to global change. However, adjustments in one trait may have adverse consequences for other traits. This thesis highlights the value of using multiple approaches to understand how species respond to global change, and the importance of considering multiple drivers of environmental change.en
dc.description.statusNot peer revieweden
dc.description.versionAccepted Version
dc.format.mimetypeapplication/pdfen
dc.identifier.citationFernández-Bellon, D. 2018. Responses to global change in a river passerine. PhD Thesis, University College Cork.en
dc.identifier.endpage123en
dc.identifier.urihttps://hdl.handle.net/10468/7309
dc.language.isoenen
dc.publisherUniversity College Corken
dc.rights© 2018, Darío Fernández-Bellon.en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/en
dc.subjectCinclus cinclusen
dc.subjectBreeding phenologyen
dc.subjectClimate changeen
dc.subjectGlobal changeen
dc.subjectLand useen
dc.subjectLay dateen
dc.subjectSliding windowsen
dc.subjectSpatial scaleen
dc.subjectTemporal scaleen
dc.subjectWhite-throated dipperen
dc.subjectBiometricsen
dc.subjectFeather corticosteroneen
dc.subjectGlucocorticoidsen
dc.subjectNestling massen
dc.subjectStress hormonesen
dc.subjectMorphologyen
dc.subjectPhenotypic changeen
dc.thesis.opt-outfalse
dc.titleResponses to global change in a river passerineen
dc.typeDoctoral thesisen
dc.type.qualificationlevelDoctoralen
dc.type.qualificationnamePhDen
ucc.workflow.supervisorj.ohalloran@ucc.ie
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