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Diversity of bird feeding guilds in relation to habitat heterogeneity and land-use cover in a human-modified landscape in southern Mexico
| Content Provider | Scilit |
|---|---|
| Author | de Bonilla, Esteban Pineda-Diez León-Cortés, Jorge L. Rangel-Salazar, José Luis |
| Copyright Year | 2012 |
| Description | Habitat heterogeneity is an important ecological determinant of species richness. We evaluated the diversity within bird feeding guilds as related to habitat heterogeneity and land-use cover in a human-modified tropical landscape. To quantify this process, fine-scale bird census and habitat heterogeneity data were collected for a bird community in a $22.5-km^{2}$fragmented landscape in southern Mexico. Land-use cover data derived from field surveys were used to calculate habitat heterogeneity index values and the extent of each land-use cover type in 239 grid cells of 300 × 300 m. Bird diversity values were obtained based on 1195 point-counts in these cells. Product-moment correlations and linear regression analyses were used to evaluate the relationship between bird-guild diversity values and habitat heterogeneity. A total of 109 resident bird species grouped in six feeding guilds were recorded: insectivores (42%), frugivores (21%), granivores (17%), nectarivores (9%), omnivores (8%) and carnivores (3%). Diversity values for the entire bird community were significantly positively related to habitat heterogeneity, but feeding guilds showed contrasting responses to habitat heterogeneity and the amount of land-use cover: insectivores and frugivores were more diverse and abundant in secondary forests than in any other land-cover. Our findings illustrate the importance of small landscape fragments as potential key refuges for the most diverse and specialized feeding guilds, such as granivores and insectivores. |
| Related Links | https://www.cambridge.org/core/services/aop-cambridge-core/content/view/201E2580D407A23B0E157EC95D50C1FE/S026646741200034Xa.pdf/div-class-title-diversity-of-bird-feeding-guilds-in-relation-to-habitat-heterogeneity-and-land-use-cover-in-a-human-modified-landscape-in-southern-mexico-div.pdf |
| Ending Page | 376 |
| Page Count | 8 |
| Starting Page | 369 |
| ISSN | 02664674 |
| e-ISSN | 14697831 |
| DOI | 10.1017/s026646741200034x |
| Journal | Journal of Tropical Ecology |
| Issue Number | 4 |
| Volume Number | 28 |
| Language | English |
| Publisher | Cambridge University Press (CUP) |
| Publisher Date | 2012-07-01 |
| Access Restriction | Open |
| Subject Keyword | Journal of Tropical Ecology Biodiversity Conservation squares Tropical Dry Forest |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ecology, Evolution, Behavior and Systematics |
