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 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
18/04/2023 |
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Actualizado : |
18/04/2023 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
LÓPEZ-MÁRSICO, L.; OYARZABAL, M.; ALTESOR, A.; PARUELO, J. |
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Afiliación : |
LUIS LÓPEZ-MÁRSICO, Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay; MARIANO OYARZABAL, IFEVA, CONICET, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina; ALICE ALTESOR,, Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay; JOSÉ PARUELO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Instituto de Ecología y Ciencias Ambientales, Fac. Ciencias, Univ. de la República, Mdeo, Uruguay IFEVA, CONICET, Fac. de Agronomía, Univ. de Buenos Aires, Bs.As., Argentina. |
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Título : |
Grazing exclusion reduces below-ground biomass of temperate subhumid grasslands of South America: A meta-analysis and a database. |
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Fecha de publicación : |
2023 |
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Fuente / Imprenta : |
Austral Ecology, 2023. [Article in Press]. doi: https://doi.org/10.1111/aec.13304 |
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ISSN : |
1442-9985 |
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DOI : |
10.1111/aec.13304 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 29 October 2022; Revised 17 February 2023; Accepted 23 February 2023. -- Correspondence author: López-Mársico, L.; Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay; email:luislopez@fcien.edu.uy -- Funding: Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT, Argentina); Comisión Sectorial de Investigación Científica (CSIC Grupos), Grant/Award Number: 433. |
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Contenido : |
There are several plant below-ground biomass databases for grasslands, but the contribution from the southern hemisphere is minimal. Particularly, no study has compiled the published values of plant below-ground biomass for the temperate subhumid grasslands of South America. In these grasslands, called Río de la Plata grasslands, grazing is the most frequent disturbance. We set two objectives: (1) to compile and synthesize data of four variables: below-ground biomass, fraction of total biomass allocated below-ground, below-ground net primary productivity and below-ground biomass turnover rate; (2) to estimate the effect of grazing exclusion on below-ground biomass by means of a meta-analysis. There are 15 studies published on six out of eight regional sub-divisions of the Río de la Plata grasslands. © 2023 Ecological Society of Australia. |
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Palabras claves : |
Below-ground biomass turnover; Below-ground net primary productivity; Biomass; Exclusion time; Open ecosystem;; Río de la Plata grasslands. |
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Asunto categoría : |
P01 Conservación de la naturaleza y recursos de La tierra |
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Marc : |
LEADER 02188naa a2200265 a 4500
001 1064040
005 2023-04-18
008 2023 bl uuuu u00u1 u #d
022 $a1442-9985
024 7 $a10.1111/aec.13304$2DOI
100 1 $aLÓPEZ-MÁRSICO, L.
245 $aGrazing exclusion reduces below-ground biomass of temperate subhumid grasslands of South America$bA meta-analysis and a database.$h[electronic resource]
260 $c2023
500 $aArticle history: Received 29 October 2022; Revised 17 February 2023; Accepted 23 February 2023. -- Correspondence author: López-Mársico, L.; Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay; email:luislopez@fcien.edu.uy -- Funding: Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT, Argentina); Comisión Sectorial de Investigación Científica (CSIC Grupos), Grant/Award Number: 433.
520 $aThere are several plant below-ground biomass databases for grasslands, but the contribution from the southern hemisphere is minimal. Particularly, no study has compiled the published values of plant below-ground biomass for the temperate subhumid grasslands of South America. In these grasslands, called Río de la Plata grasslands, grazing is the most frequent disturbance. We set two objectives: (1) to compile and synthesize data of four variables: below-ground biomass, fraction of total biomass allocated below-ground, below-ground net primary productivity and below-ground biomass turnover rate; (2) to estimate the effect of grazing exclusion on below-ground biomass by means of a meta-analysis. There are 15 studies published on six out of eight regional sub-divisions of the Río de la Plata grasslands. © 2023 Ecological Society of Australia.
653 $aBelow-ground biomass turnover
653 $aBelow-ground net primary productivity
653 $aBiomass
653 $aExclusion time
653 $aOpen ecosystem;
653 $aRío de la Plata grasslands
700 1 $aOYARZABAL, M.
700 1 $aALTESOR, A.
700 1 $aPARUELO, J.
773 $tAustral Ecology, 2023. [Article in Press]. doi: https://doi.org/10.1111/aec.13304
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INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
24/05/2023 |
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Actualizado : |
24/05/2023 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
GARCÍA, S.; GUIDO, A.; PEZZANI, F.; LATTANZI, F. |
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Afiliación : |
SILVINA GARCÍA, Ecología, Departamento de Sistemas Ambientales, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay; ANACLARA GUIDO, Grupo Ecología de Pastizales, Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay; FABIANA PEZZANI, Ecología, Departamento de Sistemas Ambientales, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay; FERNANDO A. LATTANZI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Invasion strategies of Cynodon dactylon: competitive ability under low-nutrient conditions |
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Fecha de publicación : |
2023 |
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Fuente / Imprenta : |
Austral Ecology, 2023. https://doi.org/10.1111/aec.13341 |
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ISSN : |
1442-9985 |
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DOI : |
10.1111/aec.13341 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 8 July 2022; Revised 10 April 2023; Accepted 13 April 2023; First published 05 May 2023. -- Correspondence auhtor: García, S.; Ecología, Departamento de Sistemas Ambientales, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay; email:sgarciae@fagro.edu.uy -- Funding: This research was funded by Instituto Nacional de Investigación Agropecuaria (INIA) and Comisión Sectorial de Investigación Científica (UdelaR-CSIC), Comisión Académica de Posgrado (CAP, Silvina García received a doctoral fellowship). |
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Contenido : |
ABSTRACT.- Cynodon dactylon is one of the five most important invasive alien species worldwide. It is the invasive alien species with the broadest distribution range in Uruguay, and its expansion is frequently associated with disturbances. Since natural grasslands are facing processes of productive intensification, C. dactylon represents a threat as it could displace native species. However, the mechanisms that explain its invasion success remain unclear. The objective of this study was to analyse interspecific interactions under low nutrient conditions between C. dactylon and two species that are native to the Campo grasslands in Uruguay. Specifically, we assessed differences in the components of competitive ability effects and responses (or tolerance) as possible mechanisms involved in C. dactylon invasiveness. We performed a greenhouse experiment in pots with low-nutrient substrate assessing pair-wise interactions between C. dactylon, Mnesithea selloana and Paspalum notatum plus control pots consisting of single individual of each species. The invasive species showed greater competitive ability than both native grasses, as it reduced their below and above-biomass. Conversely, the size of C. dactylon plants interacting with native species was similar to that of single C. dactylon plants growing alone (controls). This reveals that the greater competitive ability of the invasive species was due to a greater tolerance to grow with neighbouring plants. The reason underlying this tolerance was a marked increase in biomass allocation towards stolons and leaves, at the expense of roots. Conversely, native species barely changed their shoot-root allocation pattern when interacting with neighbours. Furthermore, C. dactylon induced reproductive development solely when interacting with neighbours. Along with the fact that the potential growth rate of the invasive and native species was quite similar, these results suggest that sensitive and rapidly triggered shade avoidance responses could be one mechanism involved in the invasion success of C. dactylon. © 2023 Ecological Society of Australia. MenosABSTRACT.- Cynodon dactylon is one of the five most important invasive alien species worldwide. It is the invasive alien species with the broadest distribution range in Uruguay, and its expansion is frequently associated with disturbances. Since natural grasslands are facing processes of productive intensification, C. dactylon represents a threat as it could displace native species. However, the mechanisms that explain its invasion success remain unclear. The objective of this study was to analyse interspecific interactions under low nutrient conditions between C. dactylon and two species that are native to the Campo grasslands in Uruguay. Specifically, we assessed differences in the components of competitive ability effects and responses (or tolerance) as possible mechanisms involved in C. dactylon invasiveness. We performed a greenhouse experiment in pots with low-nutrient substrate assessing pair-wise interactions between C. dactylon, Mnesithea selloana and Paspalum notatum plus control pots consisting of single individual of each species. The invasive species showed greater competitive ability than both native grasses, as it reduced their below and above-biomass. Conversely, the size of C. dactylon plants interacting with native species was similar to that of single C. dactylon plants growing alone (controls). This reveals that the greater competitive ability of the invasive species was due to a greater tolerance to grow with neighbouring plants. The reason underlying th... Presentar Todo |
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Palabras claves : |
Biological invasions; Competitive ability; Mnesithea selloana; Paspalum notatum; Uruguayan campo grasslands. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 03421naa a2200253 a 4500
001 1064165
005 2023-05-24
008 2023 bl uuuu u00u1 u #d
022 $a1442-9985
024 7 $a10.1111/aec.13341$2DOI
100 1 $aGARCÍA, S.
245 $aInvasion strategies of Cynodon dactylon$bcompetitive ability under low-nutrient conditions$h[electronic resource]
260 $c2023
500 $aArticle history: Received 8 July 2022; Revised 10 April 2023; Accepted 13 April 2023; First published 05 May 2023. -- Correspondence auhtor: García, S.; Ecología, Departamento de Sistemas Ambientales, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay; email:sgarciae@fagro.edu.uy -- Funding: This research was funded by Instituto Nacional de Investigación Agropecuaria (INIA) and Comisión Sectorial de Investigación Científica (UdelaR-CSIC), Comisión Académica de Posgrado (CAP, Silvina García received a doctoral fellowship).
520 $aABSTRACT.- Cynodon dactylon is one of the five most important invasive alien species worldwide. It is the invasive alien species with the broadest distribution range in Uruguay, and its expansion is frequently associated with disturbances. Since natural grasslands are facing processes of productive intensification, C. dactylon represents a threat as it could displace native species. However, the mechanisms that explain its invasion success remain unclear. The objective of this study was to analyse interspecific interactions under low nutrient conditions between C. dactylon and two species that are native to the Campo grasslands in Uruguay. Specifically, we assessed differences in the components of competitive ability effects and responses (or tolerance) as possible mechanisms involved in C. dactylon invasiveness. We performed a greenhouse experiment in pots with low-nutrient substrate assessing pair-wise interactions between C. dactylon, Mnesithea selloana and Paspalum notatum plus control pots consisting of single individual of each species. The invasive species showed greater competitive ability than both native grasses, as it reduced their below and above-biomass. Conversely, the size of C. dactylon plants interacting with native species was similar to that of single C. dactylon plants growing alone (controls). This reveals that the greater competitive ability of the invasive species was due to a greater tolerance to grow with neighbouring plants. The reason underlying this tolerance was a marked increase in biomass allocation towards stolons and leaves, at the expense of roots. Conversely, native species barely changed their shoot-root allocation pattern when interacting with neighbours. Furthermore, C. dactylon induced reproductive development solely when interacting with neighbours. Along with the fact that the potential growth rate of the invasive and native species was quite similar, these results suggest that sensitive and rapidly triggered shade avoidance responses could be one mechanism involved in the invasion success of C. dactylon. © 2023 Ecological Society of Australia.
653 $aBiological invasions
653 $aCompetitive ability
653 $aMnesithea selloana
653 $aPaspalum notatum
653 $aUruguayan campo grasslands
700 1 $aGUIDO, A.
700 1 $aPEZZANI, F.
700 1 $aLATTANZI, F.
773 $tAustral Ecology, 2023. https://doi.org/10.1111/aec.13341
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