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Auteur Jan Riegert |
Documents disponibles écrits par cet auteur (20)
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Article
Jan Havlíček, Auteur ; Jan Riegert, Auteur ; Roman Fuchs, AuteurLack of food for nestlings is a crucial factor influencing population size and dynamics in birds. It is one of the most cited reasons for recent House Sparrow Passer domesticus population declines in cities and rural settlements. However, a deta[...]Article
Richard Sevcik, Auteur ; Jan Riegert, Auteur ; Jiří Šindelář, Auteur ; Markéta Zárybnická, AuteurArticle
Markéta Zárybnická, Auteur ; Jan Riegert, Auteur ; Bohuslav Kloubec, Auteur ; Jan Obuch, AuteurCapsule: Diet composition of Boreal Owls Aegolius funereus was not affected by habitat cover, but it changed along the elevational gradient.Aims: To assess the effect of elevation and habitat cover on nest box occupancy and diet composition of a[...]Article
Markéta Zárybnická, Auteur ; Jan Riegert, Auteur ; Marek Kouba, AuteurAlthough population cycles of rodents are geographically widespread and occur in a number of rodent species, higher-order food web interactions mediated by predator–rodent dynamics have primarily been described from boreal and arctic biomes. Dur[...]Article
Markéta Zárybnická, Auteur ; Jan Riegert, Auteur ; Marek Kouba, AuteurAlthough population cycles of rodents are geographically widespread and occur in a number of rodent species, higher-order food web interactions mediated by predator-rodent dynamics have primarily been described from boreal and arctic biomes. Dur[...]Article
Markéta Zárybnická, Auteur ; Jan Riegert, Auteur ; Karel Št’astný, AuteurAnthropogenic activity can lead to deforestation and subsequent dramatic impacts on forest-dwelling animal species. In this study, we investigated the habitat use of a forest raptor (Tengmalm’s Owl Aegolius funereus) in an air-polluted area of t[...]Article
Martin Salek, Auteur ; Jan Riegert, Auteur ; Vaclav Krivan, AuteurCapsule Foraging habitats are determined by vegetation characteristics rather than the availability of insect prey. Aims To determine the diet composition of Little Owls in relation to the availability of insects at foraging sites, and to elucid[...]Article
Martin Salek, Auteur ; Jan Riegert, Auteur ; Vaclav Krivan, AuteurCapsule Foraging habitats are determined by vegetation characteristics rather than the availability of insect prey. Aims To determine the diet composition of Little Owls in relation to the availability of insects at foraging sites, and to elucid[...]Article
Jan Riegert, Auteur ; Matej Loevy, Auteur ; Drahomira Fainova, AuteurWe studied the dietary composition of urban populations of Common Kestrels (Falco tinnunculus) and Long-eared Owls (Asio otus) under fluctuating vole abundance in Ceske Budejovice during 2002-2005. Common Voles were the dominant prey. In poor vo[...]Article
Ondřej Sedláček, Auteur ; Jiri Reif, Auteur ; Jan Riegert, Auteur ; David Hořák, Auteur ; Michal Pesata, Auteur ; Zaboj Hrazsky, AuteurArticle
Jan Riegert, Auteur ; Michal Pesata, Auteur ; Jiri Reif, Auteur ; David Hořák, Auteur ; Ondřej Sedláček, Auteur ; Zaboj Hrazsky, Auteur ; Stepan Janecek, Auteur ; Jakub Brom, Auteur ; Michael Bartos, Auteur ; Dasa Bystricka, AuteurArticle
Ecological interactions between plants and sunbird species in Bamenda Highlands, North-West Cameroon
Jan Riegert, Auteur ; Michal Pesata, Auteur ; Stepan Janecek, Auteur ; Ondřej Sedláček, Auteur ; Jiri Reif, Auteur ; David Hořák, Auteur ; Zaboj Hrazsky, Auteur ; Jakub Brom, Auteur ; Michael Bartos, Auteur ; Dasa Bystricka, AuteurArticle
Jan Riegert, Auteur ; Ales Dufek, Auteur ; Drahomira Fainova, Auteur ; Vaclav Mikes, Auteur ; Roman Fuchs, AuteurCapsule In years with low vole abundance birds visited hunting grounds more frequently and for longer. Aims To describe diet composition, hunting behaviour, habitat choice and reproductive success of urban Kestrels during changing vole abundance[...]Article
Jan Riegert, Auteur ; Ales Dufek, Auteur ; Drahomira Fainova, Auteur ; Vaclav Mikes, Auteur ; Roman Fuchs, AuteurCapsule In years with low vole abundance birds visited hunting grounds more frequently and for longer. Aims To describe diet composition, hunting behaviour, habitat choice and reproductive success of urban Kestrels during changing vole abundance[...]Article
Markéta Zárybnická, Auteur ; Jan Riegert, Auteur ; Karel St'astny, AuteurDuring a two-year study in Central Europe, we used a combination of pellet analysis and camera recordings to assess the diet composition of Tengmalm's Owls during the breeding season, with regards to availability of the main prey components in t[...]Article
Markéta Zárybnická, Auteur ; Bohuslav Kloubec, Auteur ; Jan Obuch, Auteur ; Jan Riegert, AuteurBased on 52 nesting attempts of Tengmalm's owl Aegolius funereus in the Sumava Mountains (South Bohemia, Czech Republic), in habitats comprised mainly of Norway spruce forests, we investigated the relationships between diet composition and fledg[...]Article
Food niche differentiation in two syntopic sunbird species: a case study from the Cameroon Mountains
Jan Riegert, Auteur ; Drahomira Fainova, Auteur ; Marcin Antczak, Auteur ; Ondřej Sedláček, Auteur ; David Hořák, Auteur ; Jiri Reif, Auteur ; Michal Pesata, AuteurClosely related bird species can coexist in areas of range overlap due to differentiation of their ecological niches. If coexisting species have similar habitat requirements, separation of food niches presumably plays a crucial role. Theoretical[...]Article
Jiri Reif, Auteur ; Ondřej Sedláček, Auteur ; David Hořák, Auteur ; Jan Riegert, Auteur ; Michal Pesata, Auteur ; Zaboj Hrazsky, Auteur ; Stepan Janecek, AuteurAlthough the high species richness and endemism of birds in the Bamenda Highlands has attracted ornithological research for decades, most studies have been restricted to bird communities of continuous montane forests. Instead, we focused on a mo[...]