Meža pūces Strix aluco barības sastāvs Austrumlatvijā: vai meža pūce un urālpūce Strix uralensis konkurē par barības objektiem?

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RESEARCH PRODUCT

Meža pūces Strix aluco barības sastāvs Austrumlatvijā: vai meža pūce un urālpūce Strix uralensis konkurē par barības objektiem?

Linda Dambeniece

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Meža pūces un urālpūces barības sastāvs pētīts izmantojot ligzdošanas materiālu analīzes metodi. Materiāls ievākts no 19 ligzdām Latvijas austrumu daļā 2012. gada sezonā. Austrumlatvijā meža pūces barojušās galvenokārt ar zīdītājiem (62% no kopējās biomasas), nozīmīgi bijuši arī putni (20% no kopējās biomasas). Urālpūces barības sastāva būtiskāko daļu aizņem zīdītāji (92,7% no kopējās biomasas). Vispārīgi konkrētajā teritorijā meža pūces barības sastāva proporcionālais sadalījums atšķiras no 1999. un 2003. gadā veiktiem pētījumiem, bet būtiskāko barības objektu (Microtus un Myodes strupastes) proporcija palikusi nemainīga. Apskatot meža pūces barības sastāva izmaiņas atkarībā no urālpūces ligzdošanas klātesamības, atklāta tendence, kas norāda uz apskatīto sugu konkurenci par barību. Atslēgas vārdi: Meža pūce, Strix aluco, urālpūce, Strix uralensis, barības sastāvs, atriju analīze.

year	journal	country	edition	language
2013-01-01

https://dspace.lu.lv/dspace/handle/7/22949

PEPhysical Sciences and Engineering
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