Subtitle:

Acta Ornithologica, vol. 35, no. 1 ; Rozmieszczenie przestrzenne miejsc gniazdowych i żerowisk dwóch gatunków z rodzaju Acrocephalus w trzcinowiskach śródziemnomorskich ; Nesting and foraging sites of two Acrocephalus species

Contributor:

Polska Akademia Nauk. Muzeum i Instytut Zoologii ; Meeting of the European Ornithologists' Union (2 ; 1999 ; Gdańsk)

Publisher:

Muzeum i Instytut Zoologii PAN

Place of publishing:

Warszawa

Description:

Referat wygłoszony na Second Meeting of the European Ornithologists' Union ; Bibliogr. s. 120-121 ; S. [117]-121 : il. ; 27 cm ; Streszcz. pol. Nazwy taksonów także w jęz. łac.

Type of object:

Czasopismo/Artykuł

Abstract:

Many reedbed passerines forage outside their nesting territory. This peculiar behaviour could allow reproductive individuals to feed in areas where resources are plentiful and/or to nest in areas where predation risks are low. These hypotheses were investigated for the Moustached Warbler Acrocephalus melanopogon and the Reed Warbler A. scirpaceus in a 40-ha of reedbed in southern France. Vegetation structure, abundance of arthropod-prey, location of singing males, and bird local abundance were estimated along three transects 1-km long and 125-m distant parallel to the shore. Reed density increased from the lake inland, concurrently with a decrease in plant diversity. Food availability (sweep-netted arthropods weighted by their occurrence in species diet) varied positively with plant diversity and negatively with reed density. The dummy-nest experiment suggested a negative relationship between predation risks and reed density. While local abundance of each Acrocephalus species correlated spatially with food abundance, singing males were distributed evenly among the three transects. This suggests that predation risk associated with vegetation density has little influence on nest-site selection. The regular spacing of singing males further suggests that predation risk is primarily affected by nest density.

Relation:

Acta Ornithologica

Volume:

35

Issue:

1

Start page:

117

End page:

121

Detailed Resource Type:

Artykuł ; Materiały konferencyjne

Format:

application/pdf

Resource Identifier:

oai:rcin.org.pl:45255

Source:

MiIZ PAN, patrz sygn. czas. P.257, Vol. 35, No 1 ; MiIZ PAN, patrz sygn. czas. P.4568, Vol. 35, No 1 ; click here to follow the link

Language:

eng ; pol

Rights:

Prawa zastrzeżone - dostęp ograniczony

Terms of use:

Zasób chroniony prawem autorskim. Korzystanie dozwolone wyłącznie na terminalach Muzeum i Instytutu Zoologii PAN w zakresie określonym przez przepisy o dozwolonym użytku.

Digitizing institution:

Muzeum i Instytut Zoologii Polskiej Akademii Nauk

Original in:

Biblioteka Muzeum i Instytutu Zoologii PAN

Projects co-financed by:

Program Operacyjny Innowacyjna Gospodarka, lata 2010-2014, Priorytet 2. Infrastruktura strefy B + R ; Unia Europejska. Europejski Fundusz Rozwoju Regionalnego

Access:

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