caa a22 4500 606217576 CHVBK 20210128101108.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s11104-015-2452-2 doi (NATIONALLICENCE)springer-10.1007/s11104-015-2452-2 Grazing increases below-ground biomass and net primary production in a temperate grassland [Elektronische Daten] [Luis López-Mársico, Alice Altesor, Mariano Oyarzabal, Pablo Baldassini, José Paruelo] Background and aims: Grazing can affect the stock and flow of C between above and below-ground vegetation layers. Components of below-ground stratum are one of the less studied. The goals of this research were: 1) to characterize and estimate the vertical distribution of below-ground biomass in grazed and ungrazed areas during a growing season, and 2) to evaluate grazing effects on below-ground net primary production (BNPP). Methods: Below-ground biomass was cored four times to 100cm depth during a growing season on three paired grazed-ungrazed areas in South-central Uruguayan grasslands. BNPP was estimated using both field data and CENTURY model. Results: On average, below-ground biomass was higher in grazed (1417gm−2) than in ungrazed areas (945gm−2) and showed a marked reduction in relation with soil depth. Turnover rates were 0.40 and 0.37years−1 in grazed and ungrazed areas respectively. Field data and CENTURY simulation showed higher BNPP in grazed areas (1.86; 0.77gm−2days−1 respectively) than in ungrazed areas (1.07; 0.67 gm−2days−1 respectively). Conclusions: Grazed areas showed higher below-ground biomass, BNPP and turnover that ungrazed areas. Grazing has an important role in regulating both stock and dynamics of C in grassland ecosystems. Springer International Publishing Switzerland, 2015 C sequestration nationallicence Grazed-ungrazed nationallicence Root distribution nationallicence Soil cores nationallicence CENTURY model nationallicence Uruguay nationallicence López-Mársico Luis Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400, Montevideo, Uruguay aut Altesor Alice Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400, Montevideo, Uruguay aut Oyarzabal Mariano Laboratorio de Análisis Regional y Teledetección and Departamento de Métodos Cuantitativos y Sistemas de Información, IFEVA and Facultad de Agronomía, Universidad de Buenos Aires and CONICET, Av. San Martín 4453, C1417DSE, Buenos Aires, Argentina aut Baldassini Pablo Laboratorio de Análisis Regional y Teledetección and Departamento de Métodos Cuantitativos y Sistemas de Información, IFEVA and Facultad de Agronomía, Universidad de Buenos Aires and CONICET, Av. San Martín 4453, C1417DSE, Buenos Aires, Argentina aut Paruelo José Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400, Montevideo, Uruguay aut Plant and Soil Springer International Publishing 392/1-2(2015-07-01), 155-162 0032-079X 392:1-2<155 2015 392 11104 https://doi.org/10.1007/s11104-015-2452-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2452-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- López-Mársico Luis Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400, Montevideo, Uruguay aut NATIONALLICENCE 700 1- Altesor Alice Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400, Montevideo, Uruguay aut NATIONALLICENCE 700 1- Oyarzabal Mariano Laboratorio de Análisis Regional y Teledetección and Departamento de Métodos Cuantitativos y Sistemas de Información, IFEVA and Facultad de Agronomía, Universidad de Buenos Aires and CONICET, Av. San Martín 4453, C1417DSE, Buenos Aires, Argentina aut NATIONALLICENCE 700 1- Baldassini Pablo Laboratorio de Análisis Regional y Teledetección and Departamento de Métodos Cuantitativos y Sistemas de Información, IFEVA and Facultad de Agronomía, Universidad de Buenos Aires and CONICET, Av. San Martín 4453, C1417DSE, Buenos Aires, Argentina aut NATIONALLICENCE 700 1- Paruelo José Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400, Montevideo, Uruguay aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 392/1-2(2015-07-01), 155-162 0032-079X 392:1-2<155 2015 392 11104