Influence of group sizes and food resources in home-range sizes of capybaras from Argentina
Within a species, home-range size can vary due to intrinsic and extrinsic factors. In this study we test the hypotheses that social group sizes (intrinsic) of capybaras (Hydrochoerus hydrochaeris) and food availability in their habitat (extrinsic) affect their home-range sizes. We used the minimum c...
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2013
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222372_v94_n1_p19_Corriale http://hdl.handle.net/20.500.12110/paper_00222372_v94_n1_p19_Corriale |
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paper:paper_00222372_v94_n1_p19_Corriale2023-06-08T14:47:38Z Influence of group sizes and food resources in home-range sizes of capybaras from Argentina Argentina capybara group size home range Iberá wetlands minimum convex polygon method resources correlation food availability group size home range hypothesis testing limiting factor numerical method population distribution rodent Argentina Corrientes Ibera Wetlands Within a species, home-range size can vary due to intrinsic and extrinsic factors. In this study we test the hypotheses that social group sizes (intrinsic) of capybaras (Hydrochoerus hydrochaeris) and food availability in their habitat (extrinsic) affect their home-range sizes. We used the minimum convex polygon method to estimate home-range sizes and core areas (the area in which each group was present during all seasons). Home-range size estimates varied from 11.3 ha to 27.6 ha (X̄ = 19 ha ± 1.89 SE). Core area accounted for a mean 22.5% of the total home-range size. Home ranges measured during autumn and winter were significantly larger than those recorded in spring and summer. The correlation between home-range size and mean number of adults in groups was marginally significant, whereas that between home-range size and the overall average group size was not significant. We observed a significant negative linear correlation between home-range size and estimators of food availability. The evidence that we determined does not allow us to establish any relationship between group size and home-range size, but it lends support to the hypothesis that the abundance of food resources is a major limiting factor in determining home-range size. © 2013 American Society of Mammalogists. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222372_v94_n1_p19_Corriale http://hdl.handle.net/20.500.12110/paper_00222372_v94_n1_p19_Corriale |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Argentina capybara group size home range Iberá wetlands minimum convex polygon method resources correlation food availability group size home range hypothesis testing limiting factor numerical method population distribution rodent Argentina Corrientes Ibera Wetlands |
| spellingShingle |
Argentina capybara group size home range Iberá wetlands minimum convex polygon method resources correlation food availability group size home range hypothesis testing limiting factor numerical method population distribution rodent Argentina Corrientes Ibera Wetlands Influence of group sizes and food resources in home-range sizes of capybaras from Argentina |
| topic_facet |
Argentina capybara group size home range Iberá wetlands minimum convex polygon method resources correlation food availability group size home range hypothesis testing limiting factor numerical method population distribution rodent Argentina Corrientes Ibera Wetlands |
| description |
Within a species, home-range size can vary due to intrinsic and extrinsic factors. In this study we test the hypotheses that social group sizes (intrinsic) of capybaras (Hydrochoerus hydrochaeris) and food availability in their habitat (extrinsic) affect their home-range sizes. We used the minimum convex polygon method to estimate home-range sizes and core areas (the area in which each group was present during all seasons). Home-range size estimates varied from 11.3 ha to 27.6 ha (X̄ = 19 ha ± 1.89 SE). Core area accounted for a mean 22.5% of the total home-range size. Home ranges measured during autumn and winter were significantly larger than those recorded in spring and summer. The correlation between home-range size and mean number of adults in groups was marginally significant, whereas that between home-range size and the overall average group size was not significant. We observed a significant negative linear correlation between home-range size and estimators of food availability. The evidence that we determined does not allow us to establish any relationship between group size and home-range size, but it lends support to the hypothesis that the abundance of food resources is a major limiting factor in determining home-range size. © 2013 American Society of Mammalogists. |
| title |
Influence of group sizes and food resources in home-range sizes of capybaras from Argentina |
| title_short |
Influence of group sizes and food resources in home-range sizes of capybaras from Argentina |
| title_full |
Influence of group sizes and food resources in home-range sizes of capybaras from Argentina |
| title_fullStr |
Influence of group sizes and food resources in home-range sizes of capybaras from Argentina |
| title_full_unstemmed |
Influence of group sizes and food resources in home-range sizes of capybaras from Argentina |
| title_sort |
influence of group sizes and food resources in home-range sizes of capybaras from argentina |
| publishDate |
2013 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222372_v94_n1_p19_Corriale http://hdl.handle.net/20.500.12110/paper_00222372_v94_n1_p19_Corriale |
| _version_ |
1768546571607080960 |