Show simple item record

dc.contributor.advisorTomotani Barbara 
dc.contributor.advisorReiersten Tone Kristin
dc.contributor.authorFerrand, Jules Iñaki Hercules
dc.date.accessioned2025-07-06T08:31:37Z
dc.date.available2025-07-06T08:31:37Z
dc.date.issued2025
dc.description.abstractAbstract Urbanisation alters ecological conditions in ways that can affect avian reproductive strategies, yet its impacts in high-latitude environments remain underexplored. We investigated how breeding phenology and reproductive success in pied flycatchers (Ficedula hypoleuca) vary across an urban–rural gradient in Arctic Norway, using a combination of long-term data (2007–2018) from a rural site (Lakselvdalen) and comparative data from both rural and urban sites (Tromsø) during 2023–2024. We examined key reproductive metrics—laying date, hatching date, incubation length, clutch size, brood size, and chick loss—and tested their relationships with temperature and precipitation. Results showed earlier laying and hatching over time, closely linked to increasing temperatures. Birds in urban areas laid earlier but exhibited longer incubation periods, delaying hatching and potentially reflecting less favourable microclimatic or ecological conditions. While clutch size increased in warmer years, brood size and fledging success were relatively stable. Chick loss was lower in the urban site, possibly due to reduced predation or disturbance. Our findings suggest that reproductive timing in Arctic flycatchers is advancing with climate warming but that urban conditions may introduce additional constraints, influencing incubation behaviour and reproductive outcomes.
dc.description.abstractAbstract Urbanisation alters ecological conditions in ways that can affect avian reproductive strategies, yet its impacts in high-latitude environments remain underexplored. We investigated how breeding phenology and reproductive success in pied flycatchers (Ficedula hypoleuca) vary across an urban–rural gradient in Arctic Norway, using a combination of long-term data (2007–2018) from a rural site (Lakselvdalen) and comparative data from both rural and urban sites (Tromsø) during 2023–2024. We examined key reproductive metrics—laying date, hatching date, incubation length, clutch size, brood size, and chick loss—and tested their relationships with temperature and precipitation. Results showed earlier laying and hatching over time, closely linked to increasing temperatures. Birds in urban areas laid earlier but exhibited longer incubation periods, delaying hatching and potentially reflecting less favourable microclimatic or ecological conditions. While clutch size increased in warmer years, brood size and fledging success were relatively stable. Chick loss was lower in the urban site, possibly due to reduced predation or disturbance. Our findings suggest that reproductive timing in Arctic flycatchers is advancing with climate warming but that urban conditions may introduce additional constraints, influencing incubation behaviour and reproductive outcomes.
dc.identifier.urihttps://hdl.handle.net/10037/37434
dc.identifierno.uit:wiseflow:7267549:61779936
dc.language.isoeng
dc.publisherUiT The Arctic University of Norway
dc.rights.holderCopyright 2025 The Author(s)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleUrbanisation and Climate Shape Breeding Phenology in a Subarctic Songbird
dc.typeMaster thesis


File(s) in this item

Thumbnail

This item appears in the following collection(s)

Show simple item record

Attribution 4.0 International (CC BY 4.0)
Except where otherwise noted, this item's license is described as Attribution 4.0 International (CC BY 4.0)