Témata prací (Výběr práce)Témata prací (Výběr práce)(verze: 384)
Detail práce
   Přihlásit přes CAS
Izotopové profily uhlíku v peří a jejich vztah s místem zimoviště a průběhem hnízdění u dálkově migrujícího pěvce
Název práce v češtině: Izotopové profily uhlíku v peří a jejich vztah s místem zimoviště a průběhem hnízdění u dálkově migrujícího pěvce
Název v anglickém jazyce: Carbon isotope profiles in feathers and their association with wintering site and breeding performance in a long-distance migrant passerine
Klíčová slova: trans-Saharan migration, moulting, ornamentation, timing of breeding, Congo Basin, Southern Africa, carry-over effects, δ13C
Klíčová slova anglicky: trans-Saharan migration, moulting, ornamentation, timing of breeding, Congo Basin, Southern Africa, carry-over effects, δ13C
Akademický rok vypsání: 2022/2023
Typ práce: diplomová práce
Jazyk práce: čeština
Ústav: Katedra zoologie (31-170)
Vedoucí / školitel: prof. Mgr. Tomáš Albrecht, Ph.D.
Řešitel: skrytý - zadáno a potvrzeno stud. odd.
Datum přihlášení: 28.10.2022
Datum zadání: 28.10.2022
Datum potvrzení stud. oddělením: 13.02.2023
Datum odevzdání elektronické podoby:07.08.2024
Datum proběhlé obhajoby: 17.09.2024
Oponenti: Mgr. Peter Adamík, Ph.D.
 
 
 
Předběžná náplň práce
European long-distance migratory birds often change their feathers (moult) in wintering areas. The isotopic profiles in the environment where the moulting takes place can be detected in feathers, making it possible to identify the habitat where the bird was at the time of moulting. European barn swallows from Western Europe migrate south-westwards to their wintering grounds in the Congo Basin (forest habitat), while swallows from Eastern Europe migrate south-eastwards and winter mainly in the savannahs of southern and eastern Africa (open grassland habitat). The two habitats differ in the δ13C isotope percentage. Recent data, supported by the analysis of geolocators, suggest that the Třeboň swallow population is located exactly in the centre of the migration divide - both migration strategies are present. At the same time, barn swallows wintering in the Congo Basin differ from swallows wintering in southern Africa in the δ13C isotope rations in their feathers. The stable carbon isotope profiles of swallow feathers should be analysed in the thesis and the data used to assess: 1) the lifetime consistency of carbon isotope profiles (high consistency would indicate that individual swallows repeatedly choose the same geographical areas (Congo or South Africa) for overwintering), 2) the proportion of individuals migrating to Congo Basic and South Africa in the local population and 3) potential carry over effects of migration – the association between individual condition and fitness with δ13C isotope percentage in feathers. We assume that both migration strategies (south-west, south-east) should be in equilibrium in the centre of the migratory divide and result in the same individual fitness, even though the location of the overwintering site may influence the arrival date and breeding phenology (e.g., assumed earlier arrival from Congo than from South Africa).
Předběžná náplň práce v anglickém jazyce
European long-distance migratory birds often change their feathers (moult) in wintering areas. The isotopic profiles in the environment where the moulting takes place can be detected in feathers, making it possible to identify the habitat where the bird was at the time of moulting. European barn swallows from Western Europe migrate south-westwards to their wintering grounds in the Congo Basin (forest habitat), while swallows from Eastern Europe migrate south-eastwards and winter mainly in the savannahs of southern and eastern Africa (open grassland habitat). The two habitats differ in the δ13C isotope percentage. Recent data, supported by the analysis of geolocators, suggest that the Třeboň swallow population is located exactly in the centre of the migration divide - both migration strategies are present. At the same time, barn swallows wintering in the Congo Basin differ from swallows wintering in southern Africa in the δ13C isotope rations in their feathers. The stable carbon isotope profiles of swallow feathers should be analysed in the thesis and the data used to assess: 1) the lifetime consistency of carbon isotope profiles (high consistency would indicate that individual swallows repeatedly choose the same geographical areas (Congo or South Africa) for overwintering), 2) the proportion of individuals migrating to Congo Basic and South Africa in the local population and 3) potential carry over effects of migration – the association between individual condition and fitness with δ13C isotope percentage in feathers. We assume that both migration strategies (south-west, south-east) should be in equilibrium in the centre of the migratory divide and result in the same individual fitness, even though the location of the overwintering site may influence the arrival date and breeding phenology (e.g., assumed earlier arrival from Congo than from South Africa).
 
Univerzita Karlova | Informační systém UK