Subtitle:

Acta Ornithologica, vol. 39, no. 1 ; Test na dokładność metody kartograficznej w odniesieniu do populacji grubodziobów gniazdujących w wysokich zagęszczeniach w lesie liściastym (Białowieski Park Narodowy) ; Mapping technique accuracy for hawfinch

Contributor:

Museum and Institute of Zoology, Polish Academy of Sciences

Publisher:

Museum & Institute of Zoology

Place of publishing:

Warszawa

Description:

Bibliogr. s. 73 ; S. [67]-74 : il. ; 27 cm ; Streszcz. pol. Nazwy taksonów także w jęz. łac.

Type of object:

Czasopismo/Artykuł

Abstract:

The accuracy of the territory-mapping technique for estimating the abundance of densely breeding Hawfinches was tested in an old and unfragmented lime-oak-hornbeam forest in the Białowieża National Park, E Poland. Hawfinch numbers estimated from counts of the whole bird community carried out with the application of the standards of the improved mapping technique were compared with seven-year data on the bird’s true numbers, which are known from parallel intensive nest searches and persistent tracking of the movements of pairs. In a forest with a dense population of Hawfinches the mapping technique underestimated their numbers by 20% in years of moderate density and by 35% during high-density years. Even though the underestimation was negatively correlated with the true density of Hawfinches, the figures obtained by both methods reflected year-to-year changes in a similar way. An improvement in mapping data is achievable either by closer attention being paid to the species during standard visits (the best ones for surveying it), or post factum by the introduction of a correction factor into the mapping-technique figures.

Relation:

Acta Ornithologica

Volume:

39

Issue:

1

Start page:

67

End page:

74

Detailed Resource Type:

Czasopismo

Format:

text/xml

Resource Identifier:

oai:rcin.org.pl:55510

Source:

MiIZ PAN, sygn. patrz sygn. czas. P.257-39-1 ; MiIZ PAN, sygn. patrz sygn. czas. P.4568-39-1 ; click here to follow the link

Language:

eng

Rights:

Prawa zastrzeżone - dostęp nieograniczony

Terms of use:

Zasób chroniony prawem autorskim. Korzystanie dozwolone 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

Access:

Otwarty