Fecha/hora: 16/06/2024 08:27:34

Biblioteca(s): | INIA La Estanzuela.
Fecha corriente: | 23/09/2021
Fecha de la última actualización: | 23/09/2021
Autoria: | ZANELLA P.G.; JUNIOR L.H.P.D.G; PINTO, C.E.; BALDISSERA, T.C.; WERNER, S.S.; GARAGORRY, F.C.; JAURENA, M.; LATTANZI, F.; SBRISSIA, A.F.
Afiliación: | PABLO GILIARD ZANELLA, Animal Science Department, Santa Catarina State University (UDESC/CAV), Av. Luiz de Camões, 2090, Lages,  Santa Catarina 88520?000, Brazi.; LUIS HENRIQUE PAIM DELLA GIUSTINA JUNIOR; CASSIANO EDUARDO PINTO, Company of Agricultural Research and Rural Extension of Santa Catarina State (EPAGRI), Rua João José Godinho, sn ? Morro do Posto, Lages, Santa Catarina, 88502-970, Brazil.; TIAGO CELSO BALDISSERA, Company of Agricultural Research and Rural Extension of Santa Catarina State (EPAGRI), Rua João José Godinho, sn ? Morro do Posto, Lages, Santa Catarina, 88502-970, Brazi.; SIMONE SILMARA WERNER, Company of Agricultural Research and Rural Extension of Santa Catarina State (EPAGRI), Rua João José Godinho, sn ? Morro do Posto, Lages, Santa Catarina, 88502-970, Brazi.; FABIO CERVO GARAGORRY, Brazilian Agricultural Research Corporation (EMBRAPA), Rodovia BR-153, km 632,9, Caixa Postal 242, Bagé, Rio Grande Do Sul, 96401-970, Brazil.; MARTIN ALEJANDRO JAURENA BARRIOS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FERNANDO A. LATTANZI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANDRÉ FISCHER SBRISSIA, Animal Science Department, Santa Catarina State University (UDESC/CAV), Av. Luiz de Camões, 2090, Lages, Santa Catarina, 88520-000, Brazil.
Título: | Grazing intensity drives plant diversity but does not affect forage production in a natural grassland dominated by the tussock-forming grass Andropogon lateralis Nees.
Año de publicación: | 2021
Fuente/Imprenta: | Scientific Reports, 2021, Volume 11, Issue 1, Article number 16744. Open Access. Doi: https://doi.org/10.1038/s41598-021-96208-8
DOI: | 10.1038/s41598-021-96208-8
Idioma: | Inglés
Notas: | Article history: Received 09 March 2021/ Accepted 06 August 2021/ Published 18 August 2021

Contenido:

Abstract: 
Andropogon lateralis is a tall and highly plastic tussock-forming grass native from southern South America. It is a frequent component of Campos and Subtropical highland grasslands that often becomes dominant under lax grazing regimes. The aim of this work was to analyze the response of species diversity and forage production of a natural grassland dominated by A. lateralis to a wide range of grazing intensity. We hypothesized that species diversity and forage production would both peak at the intermediate canopy heights determined by grazing regimes of moderate intensity. A grazing experiment was conducted in a highland grassland with mesothermal humid climate at 922 masl (Atlantic Forest biome, Santa Catarina state, Brazil) that comprised 87 species from 20 families but had 50% of its standing biomass accounted by A. lateralis. Four pre-/post-grazing canopy heights?12/7, 20/12, 28/17, and 36/22 cm (measured on A. lateralis)?were arranged in a complete randomized block design with four replications, and intermittently stocked with beef heifers from October 2015 to October 2017. Andropogon lateralis cover decreased (from 75 to 50%), and species richness increased (15?25 species m?2) as canopy height decreased. Grazing intensity did not affect annual forage production (4.2 Mg DM ha?1). This natural grassland dominated by A. lateralis had a high capacity to adjust to grazing regimes of contrasting intensity, maintaining forage production stable over a wide range of canopy heights. However, to prevent losses in floristic diversity, such grassland should not be grazed at canopy heights higher than 28 cm

Palabras-Clave: | AGROECOLOGY; BIODIVERSITY; GRASSLAND ECOLOGY.
Thesagro: | CAMPO NATURAL.
Categoría del tema: | --
URL: | https://www.nature.com/articles/s41598-021-96208-8.pdf
Registro original: | INIA La Estanzuela (LE)
Ejemplares: | LE - (103447-1) - PXI - AP - DD - PP/Scientific Reports/2021 -  -  - DIS