A functional classification of 63 common Poaceae in the “Campos” grasslands of South America
The natural grasslands that form part of the “Campos” of South America contain a large number of species at the paddock level (high α diversity), but little differentiation among paddocks (low β diversity). Thus, forage resources at the farm level have slightly different seasonal growth peaks, in pa...
| Autores principales: | , , , , , , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
Asociación Argentina de Ecología
2019
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| Materias: | |
| Acceso en línea: | http://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/727/396 http://hdl.handle.net/20.500.12123/6517 https://doi.org/10.25260/EA.19.29.2.0.727 |
| _version_ | 1855035690097573888 |
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| author | Cruz, Pablo Lezana, Lucrecia Durante, Martin Jaurena, Martín Figari, Mercedes Oliveira, Leandro Bittencourt de Theau, Jean-Pierre Massa, Ernesto Segundo Viegas, Julio Quadros, Fernando L. Ferreira de |
| author_browse | Cruz, Pablo Durante, Martin Figari, Mercedes Jaurena, Martín Lezana, Lucrecia Massa, Ernesto Segundo Oliveira, Leandro Bittencourt de Quadros, Fernando L. Ferreira de Theau, Jean-Pierre Viegas, Julio |
| author_facet | Cruz, Pablo Lezana, Lucrecia Durante, Martin Jaurena, Martín Figari, Mercedes Oliveira, Leandro Bittencourt de Theau, Jean-Pierre Massa, Ernesto Segundo Viegas, Julio Quadros, Fernando L. Ferreira de |
| author_sort | Cruz, Pablo |
| collection | INTA Digital |
| description | The natural grasslands that form part of the “Campos” of South America contain a large number of species at the paddock level (high α diversity), but little differentiation among paddocks (low β diversity). Thus, forage resources at the farm level have slightly different seasonal growth peaks, in part due to the low frequency of fertilization, the lack of differential grazing management and mowing of these plant communities. To stimulate diversification of these forage resources, it is possible to take advantage of differential responses of each type of plant community to changes in their use. Characterizing species by functional traits allows to orient the use of forage resources according their functional composition, thus increasing the diversity of vegetation types, which favors differentiation of growth peaks among paddocks. After an initial division between C3 and C4 species, 63 Poaceae species were classified into eight groups or plant functional types (PFT) according to their preferred degree of soil fertility and use intensity. Based on the leaf dry matter content (LDMC) measured in experiments in Brazil, Uruguay and Argentina, we distinguished four PFT, two for C3 species and two for C4 species, with LDMC less than or equal to 300 mg/g. The species of these four PFT are adapted to fertile environments and intensive defoliation. Fertilizing and using more intensively vegetation dominated by species with these low LDMC can diversify the use value of paddocks, thus facilitating use of forage resources at the farm level. |
| format | info:ar-repo/semantics/artículo |
| id | INTA6517 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Asociación Argentina de Ecología |
| publisherStr | Asociación Argentina de Ecología |
| record_format | dspace |
| spelling | INTA65172022-08-11T13:22:31Z A functional classification of 63 common Poaceae in the “Campos” grasslands of South America Cruz, Pablo Lezana, Lucrecia Durante, Martin Jaurena, Martín Figari, Mercedes Oliveira, Leandro Bittencourt de Theau, Jean-Pierre Massa, Ernesto Segundo Viegas, Julio Quadros, Fernando L. Ferreira de Pastizales Praderas Poaceae Identificación Manejo de Praderas Biodiversidad América del Sur Pastures Grasslands Identification Grassland Management Biodiversity South America The natural grasslands that form part of the “Campos” of South America contain a large number of species at the paddock level (high α diversity), but little differentiation among paddocks (low β diversity). Thus, forage resources at the farm level have slightly different seasonal growth peaks, in part due to the low frequency of fertilization, the lack of differential grazing management and mowing of these plant communities. To stimulate diversification of these forage resources, it is possible to take advantage of differential responses of each type of plant community to changes in their use. Characterizing species by functional traits allows to orient the use of forage resources according their functional composition, thus increasing the diversity of vegetation types, which favors differentiation of growth peaks among paddocks. After an initial division between C3 and C4 species, 63 Poaceae species were classified into eight groups or plant functional types (PFT) according to their preferred degree of soil fertility and use intensity. Based on the leaf dry matter content (LDMC) measured in experiments in Brazil, Uruguay and Argentina, we distinguished four PFT, two for C3 species and two for C4 species, with LDMC less than or equal to 300 mg/g. The species of these four PFT are adapted to fertile environments and intensive defoliation. Fertilizing and using more intensively vegetation dominated by species with these low LDMC can diversify the use value of paddocks, thus facilitating use of forage resources at the farm level. Los pastizales naturales que forman parte de los “Campos” de América del Sur se caracterizan por tener un gran número de especies a nivel de potrero (alta diversidad α) y una diferenciación entre potreros relativamente baja (baja diversidad β). Esto significa que, a nivel de predio, se dispone de un conjunto de recursos forrajeros con picos de crecimiento estacionales poco diferenciados. En parte, esto es consecuencia del uso escaso de prácticas diferenciales de fertilización, de manejo del pastoreo y de corte sobre dichas comunidades vegetales. Para incentivar la diversificación de los recursos forrajeros (aumentar la diversidad β) se puede aprovechar la respuesta diferencial de los pastizales frente a cambios en su uso. Caracterizar las especies a través de sus rasgos funcionales permite orientar el uso del recurso al aplicar el tratamiento adecuado a su composición, aumentar la diversidad de tipos de vegetación y favorecer, de esta manera, el escalonamiento de la producción entre distintos potreros. Luego de una primera división entre especies C3 y C4, se clasificaron 63 Poáceas en 8 grupos o tipos funcionales de plantas (PFT) según su preferencia por sitios más o menos fértiles e intensidades de uso más o menos altas. Sobre la base de los valores de contenido en materia seca foliar (LDMC) obtenidos en varios experimentos en Brasil, Uruguay y Argentina se separaron cuatro PFT, dos de especies en C3 y otros dos de especies en C4 , que presentan valores inferiores o muy cercanos a 300 mg/g. Las especies de estos cuatro PFT están adaptadas a ambientes fértiles y defoliadas con gran intensidad, a diferencia de los cuatro PFT restantes. Fertilizar y usar de forma más intensa la vegetación donde dominan las especies con esas bajas LDMC permitirá diversificar el valor de uso de los potreros, lo que facilita el aprovechamiento de los recursos forrajeros a nivel de predio. EEA Paraná Fil: Cruz, Pablo. Université de Toulouse-INRA. AGIR; Francia Fil: Lezana, Lucrecia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina Fil: Durante, Martin. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Concepción del Uruguay; Argentina Fil: Jaurena, Martín. Instituto Nacional de Investigación Agropecuaria (INIA); Uruguay Fil: Figari, Mercedes. MGAP. DGDR; Uruguay Fil: Oliveira, Leandro Bittencourt de. Universidade Federal de Santa Maria; Brasil Fil: Theau, Jean-Pierre. Université de Toulouse-INRA. AGIR; Francia Fil: Massa, Ernesto Segundo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina. Fil: Viegas, Julio. Universidade Federal de Santa Maria; Brasil Fil: Quadros, Fernando L. Ferreira de. Universidade Federal de Santa Maria; Brasil 2019-12-16T12:49:41Z 2019-12-16T12:49:41Z 2019-08 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/727/396 http://hdl.handle.net/20.500.12123/6517 0327-5477 1667-7838 https://doi.org/10.25260/EA.19.29.2.0.727 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Asociación Argentina de Ecología Ecología Austral 29 (2) : 239-248 (Agosto 2019) |
| spellingShingle | Pastizales Praderas Poaceae Identificación Manejo de Praderas Biodiversidad América del Sur Pastures Grasslands Identification Grassland Management Biodiversity South America Cruz, Pablo Lezana, Lucrecia Durante, Martin Jaurena, Martín Figari, Mercedes Oliveira, Leandro Bittencourt de Theau, Jean-Pierre Massa, Ernesto Segundo Viegas, Julio Quadros, Fernando L. Ferreira de A functional classification of 63 common Poaceae in the “Campos” grasslands of South America |
| title | A functional classification of 63 common Poaceae in the “Campos” grasslands of South America |
| title_full | A functional classification of 63 common Poaceae in the “Campos” grasslands of South America |
| title_fullStr | A functional classification of 63 common Poaceae in the “Campos” grasslands of South America |
| title_full_unstemmed | A functional classification of 63 common Poaceae in the “Campos” grasslands of South America |
| title_short | A functional classification of 63 common Poaceae in the “Campos” grasslands of South America |
| title_sort | functional classification of 63 common poaceae in the campos grasslands of south america |
| topic | Pastizales Praderas Poaceae Identificación Manejo de Praderas Biodiversidad América del Sur Pastures Grasslands Identification Grassland Management Biodiversity South America |
| url | http://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/727/396 http://hdl.handle.net/20.500.12123/6517 https://doi.org/10.25260/EA.19.29.2.0.727 |
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