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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha : |
18/04/2022 |
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Actualizado : |
18/04/2022 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
BLANCO, L. J.; PARUELO, J.; OESTERHELD, M.; AGÜERO, W. D. |
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Afiliación : |
LISANDRO JAVIER BLANCO, 1Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experiemental Agropecuaria (EEA) La Rioja, Chamical, Argentina; JOSÉ PARUELO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. Facultad de Agronomía, IFEVA, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina; MARTÍN OESTERHELD, Facultad de Agronomía, IFEVA, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina; WALTER DAMIÁN AGÜERO, 1Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experiemental Agropecuaria (EEA) La Rioja, Chamical, Argentina. |
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Título : |
Radiation use efficiency of the herbaceous layer of dry Chaco shrublands and woodlands: spatial and temporal patterns. |
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Fecha de publicación : |
2022 |
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Fuente / Imprenta : |
Applied Vegetation Science, 2022, volume 25, article e12653. Doi: https://doi.org/10.1111/avsc.12653 |
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DOI : |
10.1111/avsc.12653 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received: 30 July 2020 // Revised: 1 February 2022 // Accepted: 24 February 2022.
Correspondence: Lisandro Blanco, blanco.lisandro@inta.gob.ar |
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Contenido : |
Aims: Monitoring rangeland above-ground net primary production (ANPP) requires information on the variation of radiation use efficiency (RUE). We studied the spatial
and temporal variations of RUE of the herbaceous layer (RUEH) in woodlands and shrublands and its association with grazing regime, environmental, and vegetation
variables.
Location: We worked in the Arid Chaco (Argentina), an ecotone region between the Chaco and Monte phytogeographic provinces. Woody and herbaceous species coexist in variable proportions in relation to a regional precipitation gradient and local edaphic variations.
Methods and results: Over eight growing seasons, we estimated RUEH at 12 sites, each with two contrasting grazing regimes (moderate and severe). To do this, we related estimated ANPPH from biomass harvests and APARH (absorbed photosynthetically active radiation of the herbaceous layer) calculated from the MODIS normalized difference vegetation index (NDVI). Then we linked the RUEH with precipitation, physiognomy, soil, and landscape data. Most of the spatial variability of RUEH was accounted for by the grazing regime. Moderately grazed areas had a three times greater RUEH than severely grazed ones (0.507 and 0.180 g MJ−1 respectively). They also exhibited different proportions of herbaceous functional types. Physiognomic characteristics of the woody layer explained a significant proportion of the spatial variation of RUEH not explained by grazing regime. RUEH was between 30 and 150% greater in woodlands than in shrublands depending on whether the sites were under moderate or severe grazing respectively.
Conclusion: Grazing regime and woody physiognomy accounted for most of the variation in herbaceous radiation use efficiency. Our results show that RUEH may be predicted with greater accuracy from a combination of vegetation maps and information on grazing regime. Thus, our models could be incorporated into web platforms that provide ANPPH (forage) monitoring services based on satellite data, in order to improve their estimates in woodlands, shrublands and savanna ecosystems. MenosAims: Monitoring rangeland above-ground net primary production (ANPP) requires information on the variation of radiation use efficiency (RUE). We studied the spatial
and temporal variations of RUE of the herbaceous layer (RUEH) in woodlands and shrublands and its association with grazing regime, environmental, and vegetation
variables.
Location: We worked in the Arid Chaco (Argentina), an ecotone region between the Chaco and Monte phytogeographic provinces. Woody and herbaceous species coexist in variable proportions in relation to a regional precipitation gradient and local edaphic variations.
Methods and results: Over eight growing seasons, we estimated RUEH at 12 sites, each with two contrasting grazing regimes (moderate and severe). To do this, we related estimated ANPPH from biomass harvests and APARH (absorbed photosynthetically active radiation of the herbaceous layer) calculated from the MODIS normalized difference vegetation index (NDVI). Then we linked the RUEH with precipitation, physiognomy, soil, and landscape data. Most of the spatial variability of RUEH was accounted for by the grazing regime. Moderately grazed areas had a three times greater RUEH than severely grazed ones (0.507 and 0.180 g MJ−1 respectively). They also exhibited different proportions of herbaceous functional types. Physiognomic characteristics of the woody layer explained a significant proportion of the spatial variation of RUEH not explained by grazing regime. RUEH was between 30 and ... Presentar Todo |
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Palabras claves : |
ARGENTINA; ARIDITY; CHACO; GRASS FORAGE; GRAZING; NDVI (ÍNDICE DE VEGETACIÓN DE DIFERENCIA NORMALIZADA); PRIMARY PRODUCTION; REMOTE SENSING; SATELLITE MONITORING; WOODY ECOSYSTEM. |
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Asunto categoría : |
F62 Fisiología de la planta - Crecimiento y desarrollo |
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Marc : |
LEADER 03209naa a2200301 a 4500
001 1063053
005 2022-04-18
008 2022 bl uuuu u00u1 u #d
024 7 $a10.1111/avsc.12653$2DOI
100 1 $aBLANCO, L. J.
245 $aRadiation use efficiency of the herbaceous layer of dry Chaco shrublands and woodlands$bspatial and temporal patterns.$h[electronic resource]
260 $c2022
500 $aArticle history: Received: 30 July 2020 // Revised: 1 February 2022 // Accepted: 24 February 2022. Correspondence: Lisandro Blanco, blanco.lisandro@inta.gob.ar
520 $aAims: Monitoring rangeland above-ground net primary production (ANPP) requires information on the variation of radiation use efficiency (RUE). We studied the spatial and temporal variations of RUE of the herbaceous layer (RUEH) in woodlands and shrublands and its association with grazing regime, environmental, and vegetation variables. Location: We worked in the Arid Chaco (Argentina), an ecotone region between the Chaco and Monte phytogeographic provinces. Woody and herbaceous species coexist in variable proportions in relation to a regional precipitation gradient and local edaphic variations. Methods and results: Over eight growing seasons, we estimated RUEH at 12 sites, each with two contrasting grazing regimes (moderate and severe). To do this, we related estimated ANPPH from biomass harvests and APARH (absorbed photosynthetically active radiation of the herbaceous layer) calculated from the MODIS normalized difference vegetation index (NDVI). Then we linked the RUEH with precipitation, physiognomy, soil, and landscape data. Most of the spatial variability of RUEH was accounted for by the grazing regime. Moderately grazed areas had a three times greater RUEH than severely grazed ones (0.507 and 0.180 g MJ−1 respectively). They also exhibited different proportions of herbaceous functional types. Physiognomic characteristics of the woody layer explained a significant proportion of the spatial variation of RUEH not explained by grazing regime. RUEH was between 30 and 150% greater in woodlands than in shrublands depending on whether the sites were under moderate or severe grazing respectively. Conclusion: Grazing regime and woody physiognomy accounted for most of the variation in herbaceous radiation use efficiency. Our results show that RUEH may be predicted with greater accuracy from a combination of vegetation maps and information on grazing regime. Thus, our models could be incorporated into web platforms that provide ANPPH (forage) monitoring services based on satellite data, in order to improve their estimates in woodlands, shrublands and savanna ecosystems.
653 $aARGENTINA
653 $aARIDITY
653 $aCHACO
653 $aGRASS FORAGE
653 $aGRAZING
653 $aNDVI (ÍNDICE DE VEGETACIÓN DE DIFERENCIA NORMALIZADA)
653 $aPRIMARY PRODUCTION
653 $aREMOTE SENSING
653 $aSATELLITE MONITORING
653 $aWOODY ECOSYSTEM
700 1 $aPARUELO, J.
700 1 $aOESTERHELD, M.
700 1 $aAGÜERO, W. D.
773 $tApplied Vegetation Science, 2022, volume 25, article e12653. Doi: https://doi.org/10.1111/avsc.12653
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INIA Treinta y Tres (TT) |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha actual : |
12/11/2019 |
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Actualizado : |
16/11/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
-- - -- |
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Autor : |
GUIDO, A.; HOSS, D.; PILLAR, V. D. |
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Afiliación : |
ANACLARA GUIDO BOLIOLI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. // Graduate Program in Ecology and Laboratory of Quantitative Ecology, Department of Ecology, Universidade Federal do Río Grande do Sul, Porto Alegre, Brasil.; DANIELA HOSS, Graduate Program in Ecology and Laboratory of Quantitative Ecology, Department of Ecology, Universidade Federal do Río Grande do Sul, Porto Alegre, Brasil.; VALÉRIO D. PILLAR, Graduate Program in Ecology and Laboratory of Quantitative Ecology, Department of Ecology, Universidade Federal do Río Grande do Sul, Porto Alegre, Brasil. |
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Título : |
Competitive effect and responses of the invasive grass Eragrostis plana in Río de la Plata grasslands. |
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Fecha de publicación : |
2019 |
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Fuente / Imprenta : |
Austral Ecology, 1 December 2019, Volume 44, Issue 8, Pages 1478-1486. Doi: https://doi.org/10.1111/aec.12822 |
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DOI : |
10.1111/aec.12822 |
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Idioma : |
Inglés |
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Notas : |
Article history: Accepted Publication August 2019. First Publication 12 Sep 2019. |
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Contenido : |
Abstract
The ability of an invasive species to establish is mostly determined by its biotic interactions with native species from the recipient community. Here, we evaluate the competitive effects and responses of the invasive Eragrostis plana when interacting with native species, in order to identify possible mechanisms driving invasion in Río de la Plata grasslands. A pairwise competition experiment was performed consisting of treatments that varied in the identity of neighbour plant species: (i) control (no interaction); (ii) intraspecific interaction; (iii) interspecific interaction between native and invasive species; and (iv) interspecific interaction between two co‐occurring native species. Data analysis was separated into the effect of E. plana on the performance of three native perennial grasses (target species: Aristida laevis, Eragrostis neesii and Paspalum notatum) and the response of E. plana to natives (target species: E. plana). Separately for each target species, components of plant performance were compared between neighbouring species treatments. We found that the strength of competitive interactions depended on both target and neighbour species identity. Regarding natives, interspecific competition was stronger than intraspecific. Native species showed distinctive responses to whether the neighbour was the invasive or a co‐occurring native (Eragrostis lugens). Competition between E. plana and native species was stronger than between co‐occurring natives. We demonstrated E. plana had a greater negative effect on native's species performance than the native congener E. lugens. Regarding E. plana, intraspecific competition was stronger than interspecific, and its response was positive or neutral when interacting with natives, suggesting its high tolerance to grow in competition with neighbours. We conclude E. plana's negative effects on native species performance, and its positive or neutral responses to neighbouring native plants demonstrate its strong competitive ability in the recipient community. This may explain its invasion success in southern Brazil and in the encompassing Río de la Plata grasslands. MenosAbstract
The ability of an invasive species to establish is mostly determined by its biotic interactions with native species from the recipient community. Here, we evaluate the competitive effects and responses of the invasive Eragrostis plana when interacting with native species, in order to identify possible mechanisms driving invasion in Río de la Plata grasslands. A pairwise competition experiment was performed consisting of treatments that varied in the identity of neighbour plant species: (i) control (no interaction); (ii) intraspecific interaction; (iii) interspecific interaction between native and invasive species; and (iv) interspecific interaction between two co‐occurring native species. Data analysis was separated into the effect of E. plana on the performance of three native perennial grasses (target species: Aristida laevis, Eragrostis neesii and Paspalum notatum) and the response of E. plana to natives (target species: E. plana). Separately for each target species, components of plant performance were compared between neighbouring species treatments. We found that the strength of competitive interactions depended on both target and neighbour species identity. Regarding natives, interspecific competition was stronger than intraspecific. Native species showed distinctive responses to whether the neighbour was the invasive or a co‐occurring native (Eragrostis lugens). Competition between E. plana and native species was stronger than between co‐oc... Presentar Todo |
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Palabras claves : |
CAPIM ANNONI; INTENSITY INDEX; INTERSPECIFIC COMPETITION; INTRASPECIFIC COMPETITION; INVASION; RELATIVE INTERACTION; SOUTH AFRICAN LOVEGRASS. |
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Asunto categoría : |
H60 Malezas y escardas |
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Marc : |
LEADER 03074naa a2200253 a 4500
001 1060413
005 2020-11-16
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1111/aec.12822$2DOI
100 1 $aGUIDO, A.
245 $aCompetitive effect and responses of the invasive grass Eragrostis plana in Río de la Plata grasslands.$h[electronic resource]
260 $c2019
500 $aArticle history: Accepted Publication August 2019. First Publication 12 Sep 2019.
520 $aAbstract The ability of an invasive species to establish is mostly determined by its biotic interactions with native species from the recipient community. Here, we evaluate the competitive effects and responses of the invasive Eragrostis plana when interacting with native species, in order to identify possible mechanisms driving invasion in Río de la Plata grasslands. A pairwise competition experiment was performed consisting of treatments that varied in the identity of neighbour plant species: (i) control (no interaction); (ii) intraspecific interaction; (iii) interspecific interaction between native and invasive species; and (iv) interspecific interaction between two co‐occurring native species. Data analysis was separated into the effect of E. plana on the performance of three native perennial grasses (target species: Aristida laevis, Eragrostis neesii and Paspalum notatum) and the response of E. plana to natives (target species: E. plana). Separately for each target species, components of plant performance were compared between neighbouring species treatments. We found that the strength of competitive interactions depended on both target and neighbour species identity. Regarding natives, interspecific competition was stronger than intraspecific. Native species showed distinctive responses to whether the neighbour was the invasive or a co‐occurring native (Eragrostis lugens). Competition between E. plana and native species was stronger than between co‐occurring natives. We demonstrated E. plana had a greater negative effect on native's species performance than the native congener E. lugens. Regarding E. plana, intraspecific competition was stronger than interspecific, and its response was positive or neutral when interacting with natives, suggesting its high tolerance to grow in competition with neighbours. We conclude E. plana's negative effects on native species performance, and its positive or neutral responses to neighbouring native plants demonstrate its strong competitive ability in the recipient community. This may explain its invasion success in southern Brazil and in the encompassing Río de la Plata grasslands.
653 $aCAPIM ANNONI
653 $aINTENSITY INDEX
653 $aINTERSPECIFIC COMPETITION
653 $aINTRASPECIFIC COMPETITION
653 $aINVASION
653 $aRELATIVE INTERACTION
653 $aSOUTH AFRICAN LOVEGRASS
700 1 $aHOSS, D.
700 1 $aPILLAR, V. D.
773 $tAustral Ecology, 1 December 2019, Volume 44, Issue 8, Pages 1478-1486. Doi: https://doi.org/10.1111/aec.12822
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