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J Six, R Conant, EA Paul, K Paustian (2002)
Stabilization mechanisms of soil organic matter: implications for C-saturation of soilsPlant Soil, 241
L-S Koutika, S Hauser, J Henrot (2001)
Soil organic matter assessment in natural regrowth, Pueraria phaseoloides and Mucuna pruriens fallowSoil Biol Biochem, 33
VH Dale, SC Beyeler (2001)
Challenges in the development and use of ecological indicatorsEcol Indic, 1
J Manley, G Schuman, J Reeder, R Hart (1995)
Rangeland soil carbon and nitrogen responses to grazingJ Soil Water Conserv, 50
EG Jobbágy, JM Paruelo, RJ León (1995)
Estimación del régimen de precipitación a partir de la distancia a la cordillera en el noroeste de la PatagoniaEcol Austral, 5
R Daubenmire (1959)
A canopy-coverage method of vegetational analysisNorthwest Sci, 33
AS Enriquez, RA Chimner, MV Cremona (2015)
Grazing intensity levels influence C reservoirs of wet and mesic meadows along a precipitation gradient in Northern PatagoniaWetl Ecol Manag, 23
H Valle, N Elissalde, D Gagliardini, J Milovich (1998)
Status of desertification in the Patagonian region: assessment and mapping from satellite imageryArid Land Res Manag, 12
DR Lopez, L Cavallero, M Brizuela, MR Aguiar (2011)
Ecosystemic structural–functional approach of the state and transition modelAppl Veg Sci, 14
JGN Irisarri, M Oesterheld, JM Paruelo, MA Texeira (2012)
Patterns and controls of above-ground net primary production in meadows of Patagonia. A remote sensing approachJ Veg Sci, 23
F Bastida, A Zsolnay, T Hernández, C García (2008)
Past, present and future of soil quality indices: a biological perspectiveGeoderma, 147
LS Videla, CM Rostagno, MA Toyos (2008)
La materia orgánica particulada: comparación de métodos para su determinación y su valor como indicador de calidad de suelos del ChubutCienc Suelo, 26
G Buono, M Oesterheld, V Nakamatsu, J Paruelo (2010)
Spatial and temporal variation of primary production of Patagonian wet meadowsJ Arid Environ, 74
A Franzluebbers, J Stuedemann (2002)
Particulate and non-particulate fractions of soil organic carbon under pastures in the Southern Piedmont USAEnviron Pollut, 116
CC Figueiredo, DVS Resck, MAC Carneiro (2010)
Labile and stable fractions of soil organic matter under management systems and native cerradoRev Bras Ciênc Solo, 34
DL Sparks, A Page, P Helmke (1996)
Methods of soil analysis. Part 3-Chemical methods
C López, J Gaitán, J Ayesa (2005)
Evaluación y clasificación de valles y mallines sudoeste de Río NegroArea Recur Nat Relev Integrado INTA EEA Bariloche Comun Téc, 97
ADCF Aguiar, CS Cândido, CS Carvalho (2013)
Organic matter fraction and pools of phosphorus as indicators of the impact of land use in the Amazonian peripheryEcol Indic, 30
BT Bestelmeyer, K Moseley, PL Shaver (2010)
Practical guidance for developing state-and-transition modelsRangelands, 32
DJ Eldridge, M Delgado-Baquerizo, SK Travers (2016)
Do grazing intensity and herbivore type affect soil health? Insights from a semi-arid productivity gradientJ Appl Ecol, 54
H Motulsky, A Christopoulos (2004)
Fitting models to biological data using linear and nonlinear regression: a practical guide to curve fitting
A Walkley, IA Black (1934)
An examination of the Degtjareff method for determining soil organic matter, and a proposed modification of the chromic acid titration methodSoil Sci, 37
M Liu, DA Ussiri, R Lal (2016)
Soil organic carbon and nitrogen fractions under different land uses and tillage practicesCommun Soil Sci Plant Anal, 47
AC Motta, D Wayne Reeves, C Burmester, Y Feng (2007)
Conservation tillage, rotations, and cover crop affecting soil quality in the Tennessee valley: particulate organic matter, organic matter, and microbial biomassCommun Soil Sci Plant Anal, 38
JJ Gaitán, DE Bran, F Murray (2007)
Efecto de la severidad de quemado sobre la concentración de carbono orgánico en montículos e intermontículos en el monte australCiencia del Suelo, 25
RF Sousa, EPF Brasil, CC Figueiredo, WM Leandro (2015)
Soil organic matter fractions in preserved and disturbed wetlands of the Cerrado biomeRev Bras Ciênc Solo, 39
RA Chimner, GL Bonvissuto, MV Cremona (2011)
Ecohydrological conditions of wetlands along a precipitation gradient in Patagonia, ArgentinaEcol Austral, 21
C Cambardella, E Elliott (1992)
Particulate soil organic-matter changes across a grassland cultivation sequenceSoil Sci Soc Am J, 56
JA Galantini, L Suñer (2008)
Las fracciones orgánicas del suelo: análisis en los suelos de la ArgentinaAgriscientia, 25
A Loss, MG Pereira, A Perin (2013)
Particulate organic matter in soil under different management systems in the Brazilian CerradoSoil Res, 50
SV Archontoulis, FE Miguez (2015)
Nonlinear regression models and applications in agricultural researchAgron J, 107
C Cambardella, A Gajda, J Doran (2001)
Assessment methods for soil carbon
Patagonian meadows are key for the development and sustainability of rural environments. However, they have been degraded due to a combination of weather conditions and overgrazing. Total soil organic carbon (TOC) has been found as a moderate indicator of meadow soil degradation by long-term heavy grazing. The aim of this study was to evaluate the particulate organic carbon (POC) (a more labile fraction of the soil organic matter) as an ecological indicator for assessing soil changes in natural Patagonian meadows, related to different long-term grazing managements. We worked in three locations along a precipitation gradient in Northern Patagonia. Each location has wet and mesic meadows with good and poor grassland condition, attributed to two long-term grazing pressures (light and heavy). We sampled soil throughout the plant-growing season following the natural soil moisture fluctuations, and quantified the POC content, the POC:TOC ratio, and the F>53 proportion. Along the different sampling dates, significant differences between good versus poor grassland condition were found in many cases in POC, a few in POC:TOC ratio, and none in F>53 proportion. The POC varies over time, in association with changes in the soil moisture (adjusted R2 vary between 0.76 and 0.99); therefore, the sampling date must be standardized (we recommend dry periods). The POC appears to be a sensitive indicator when assessing the effect of different soil management practices on soil quality, an important step for meadow conservation, restoration and sustainable use, but further research is needed to validate this exploratory study.
Wetlands Ecology and Management – Springer Journals
Published: Sep 22, 2017
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