Grazing increases below-ground biomass and net primary production in a temperate grassland

Grazing increases below-ground biomass and net primary production in a temperate grassland. López-Mársico, L., Altesor, A., Oyarzabal, M., Baldassini, P., & Paruelo, J., M. Plant and Soil, 392(1-2):155-162, Springer International Publishing, 2015.

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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 100 cm 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 (1417 gm−2) than in ungrazed areas (945 gm−2) and showed a marked reduction in relation with soil depth. Turnover rates were 0.40 and 0.37 years−1 in grazed and ungrazed areas respectively. Field data and CENTURY simulation showed higher BNPP in grazed areas (1.86; 0.77 gm−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. Keywords

@article{
 title = {Grazing increases below-ground biomass and net primary production in a temperate grassland},
 type = {article},
 year = {2015},
 identifiers = {[object Object]},
 keywords = {crn3095},
 pages = {155-162},
 volume = {392},
 websites = {http://dx.doi.org/10.1007/s11104-015-2452-2,citeulike-article-id:14167744},
 publisher = {Springer International Publishing},
 editors = {[object Object]},
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 created = {2019-04-01T18:01:22.207Z},
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 abstract = {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 100 cm 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 (1417 gm−2) than in ungrazed areas (945 gm−2) and showed a marked reduction in relation with soil depth. Turnover rates were 0.40 and 0.37 years−1 in grazed and ungrazed areas respectively. Field data and CENTURY simulation showed higher BNPP in grazed areas (1.86; 0.77 gm−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.
      
      Keywords},
 bibtype = {article},
 author = {López-Mársico, L and Altesor, A and Oyarzabal, M and Baldassini, P and Paruelo, J M},
 journal = {Plant and Soil},
 number = {1-2}
}

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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).\n \n Methods\n \n Below-ground biomass was cored four times to 100 cm 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.\n \n Results\n \n On average, below-ground biomass was higher in grazed (1417 gm−2) than in ungrazed areas (945 gm−2) and showed a marked reduction in relation with soil depth. Turnover rates were 0.40 and 0.37 years−1 in grazed and ungrazed areas respectively. Field data and CENTURY simulation showed higher BNPP in grazed areas (1.86; 0.77 gm−2days−1 respectively) than in ungrazed areas (1.07; 0.67 gm−2days−1 respectively).\n \n Conclusions\n \n 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.\n \n Keywords","bibtype":"article","author":"López-Mársico, L and Altesor, A and Oyarzabal, M and Baldassini, P and Paruelo, J M","journal":"Plant and Soil","number":"1-2","bibtex":"@article{\n title = {Grazing increases below-ground biomass and net primary production in a temperate grassland},\n type = {article},\n year = {2015},\n identifiers = {[object Object]},\n keywords = {crn3095},\n pages = {155-162},\n volume = {392},\n websites = {http://dx.doi.org/10.1007/s11104-015-2452-2,citeulike-article-id:14167744},\n publisher = {Springer International Publishing},\n editors = {[object Object]},\n id = {9bba2067-6aea-3a52-9da6-bcc41821125a},\n created = {2019-04-01T18:01:22.207Z},\n file_attached = {false},\n profile_id = {1f5347e3-dec5-3349-a941-3b484c2dfce9},\n group_id = {184ee5d4-bd93-3566-938b-14cc43849390},\n last_modified = {2019-04-01T18:01:22.207Z},\n read = {false},\n starred = {false},\n authored = {false},\n confirmed = {false},\n hidden = {false},\n source_type = {JOUR},\n private_publication = {false},\n abstract = {Background and aims\n \n Grazing can affect the stock and flow of C between above and below-ground vegetation layers. 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