Cattle decrease plant species diversity in protected humid temperate savanna
Question: Is domestic cattle an appropriate surrogate for fire in a protected humid temperate savanna? Study area: El Palmar Grande de Colón (31º52´ S, 58º17´ W), Argentina. Methods: We surveyed dense Butia yatay palm savannas in two neighboring protected areas, El Palmar National Park (EPNP), under...
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2018batista.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
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| 022 | |a 0340-269X | ||
| 024 | |a 10.1127/phyto/2018/0244 | ||
| 040 | |a AR-BaUFA | ||
| 100 | 1 | |9 12935 |a Batista, William Bennett |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información. Buenos Aires, Argentina. |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. | |
| 245 | 0 | 0 | |a Cattle decrease plant species diversity in protected humid temperate savanna |
| 520 | |a Question: Is domestic cattle an appropriate surrogate for fire in a protected humid temperate savanna? Study area: El Palmar Grande de Colón (31º52´ S, 58º17´ W), Argentina. Methods: We surveyed dense Butia yatay palm savannas in two neighboring protected areas, El Palmar National Park (EPNP), under cattle exclusion since 1970 with sporadic burning; and La Aurora Wildlife Refuge (LAWR), under moderate cattle density, and not burnt since 1997. In each area, we randomly selected ten dense savanna stands, established 500 m² plots and undertook floristic survey in spring and summer to produce exhaustive plant-species lists. We statistically compared the two samples in terms of: local and global diversities; compositional heterogeneity among stands; mean similarity to a historical record from the area; overall species composition; and abundance and numbers of species with different growth habits and origins. Results: Differences between our samples are clear-cut. Savannas at EPNP have significantly increased local and global species richness and exhibit decreased similarities with the historical record. They have a novel understory, with significantly increased abundances and species numbers of fire-resistant grassland shrubs and fire-sensitive trees, and a groundcover with significantly increased richness of subshrub and perennial graminoid species. Savannas at LAWR have virtually no woody understory, and exhibit a groundcover dominated by an impoverished suite of perennial grasses, with significantly increased abundances and numbers of annual and of exotic species. Conclusions: Our results suggest that large-scale, long-term cattle exclusion and sporadic fires have resulted in changes in the structure and composition of the savanna vegetation leading to increased plant species diversity. Apparently, conservation of these humid savannas in protected areas requires periodic fire, while domestic cattle are a poor alternative for maintaining their plant species diversity. | ||
| 653 | |a CAMPOS REGION | ||
| 653 | |a CATTLE | ||
| 653 | |a FIRE | ||
| 653 | |a GRAZING | ||
| 653 | |a NATIONAL PARK | ||
| 653 | |a HUMID SAVANNA | ||
| 653 | |a PROTECTED AREA | ||
| 653 | |a SPECIES DIVERSITY | ||
| 700 | 1 | |9 36005 |a Mochi, Lucía Sol |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información. Buenos Aires, Argentina. | |
| 700 | 1 | |9 33845 |a Biganzoli, Fernando |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información. Buenos Aires, Argentina. | |
| 773 | 0 | |t Phytocoenologia |w (AR-BaUFA)SECS000360 |g vol.48, no.3 (2018), p.283-295, tbls., grafs., fot. | |
| 856 | |f 2018batista |i en reservorio |q application/pdf |u http://ri.agro.uba.ar/files/intranet/articulo/2018batista.pdf |x ARTI201902 | ||
| 856 | |z LINK AL EDITOR |u https://www.schweizerbart.de | ||
| 942 | 0 | |c ARTICULO | |
| 942 | 0 | |c ENLINEA | |
| 976 | |a AAG | ||