Odnosi med telesno velikostjo, razširjenostjo in gostoto gnezdečih ptic v Sloveniji = Relationship between body size, distribution and abundance of breeding birds in Slovenia /
Through the analysis of empirical data on the breeders of Slovenia, relations between their distribution, abundance and body size were being assessed. Two hypotheses were tested: 1) species with greater distribution have greater abundance than species limited to smaller geographical regions: 2) larg...
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| Glavni avtor: | |
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| Format: | Book Chapter |
| Jezik: | Slovenian |
| Teme: |
biologija
> zoologija
> ornitologija
> ptice
> Aves
> telesna velikost
> razširjenost
> številčnost
> gnezdilke
> Slovenija
biology
> zoology
> ornitology
> birds
> Aves
> body size
> distribution
> abundance
> breeding birds
> Slovenia
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| Sorodne knjige/članki: | Vsebovano v:
Acrocephalus |
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| Izvleček: | Through the analysis of empirical data on the breeders of Slovenia, relations between their distribution, abundance and body size were being assessed. Two hypotheses were tested: 1) species with greater distribution have greater abundance than species limited to smaller geographical regions: 2) larger species have lower average abundance than smaller. The relationship between distribution and abundance of the species breeding in Slovenia was in accordance with the exponent growth, while the correlation coefficient was high and positive (R=0,75). Correlation between distribution of species and number of breeding pairs was also significant and positive (R=0,88). Larger species had smaller average abundance and therefore smaller number of breeding pairs than smaller birds. Correlation between body size and abundanceof pairs was negative (r=-0,41). The difference in abundance of pairs between species with larger and smaller body size is presumably the result of different access to natural resources (mainly food). In larger species, the same quantity of limited natural resources is distributed among smaller number of individuals, while in small body size species this quantity is distributed among greater number of birds. |
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| Fizični opis: | str. 123-128 : Ilustr. |
| Bibliografija: | Bibliografija: str. 128. Povzetek. |
| ISSN: | 0351-2851 |