Land use affected nutrient mass with minor impact on stoichiometry ratios in Pampean soils

Álvarez, Roberto; Fernández-Gimenez, Analía Verónica; Caffaro, Maria Marta; Pagnanini, Federico; Recondo, Verónica; Molina, Cecilia D.; Berhongaray, Gonzalo; Mendoza, María Rosa; Ramil, Denise Amalia; Facio, Facundo; Paepe, Josefina de; Steinbach, Haydee Sara; Cantet, Rodolfo Juan Carlos

doi:10.1007/s10705-017-9896-0

Cited by 12 publications

(5 citation statements)

References 85 publications

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“…The mobile N pool in the flooded Gyldensteen Coastal Lagoon soils may have been spiked excessively by the fertilization with primarily N in the last two years before flooding (Table 1). Conversely, the low N:P molar ratio of 3-6 in the Gyldensteen soils indicate a relatively high P content in the flooded agriculture land when compared with ratios of 12-15 reported for unfertilized soils (Cleveland and Liptzin 2007;Alvarez et al 2018). Interestingly, a small uncultivated patch at Gyldensteen (GI08) showed a similar high soil N:P of 16-18 (Table 3).…”

Section: N and P Exportmentioning

confidence: 82%

“…The export is particularly large for both N and P the first years after flooding, but the subsequent attenuation of soil N loss and release to the overlying water is faster than for P. The nutrients available for the rapid release in flooded agricultural soils originate to a large extent from the large inventory accumulated after many years of intensive fertilization (Bouwman et al 2013;Muhammed et al 2018). The accumulated N and P typically occur in the form of labile and refractory organic material (Keller et al 2002;Alvarez et al 2018) as well as easily exchangeable (e.g. Fe and clay) and more tightly (e.g.…”

Section: N and P Exchange Patterns And The Underlying Mechanismsmentioning

confidence: 99%

“…Fe and clay) and more tightly (e.g. Ca) adsorbed inorganic pools (Romanyà and Rovira 2009;Alvarez et al 2018). Microbial mineralization, transformation and exchange of both N and P is relatively fast in non-flooded soil with deep oxygen penetration (Steinmuller et al 2019).…”

Section: N and P Exchange Patterns And The Underlying Mechanismsmentioning

confidence: 99%

See 2 more Smart Citations

Nitrogen and Phosphorus Export After Flooding of Agricultural Land by Coastal Managed Realignment

Kristensen

Quintana

Valdemarsen

et al. 2020

Estuaries and Coasts

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Section: N and P Exportmentioning

confidence: 82%

Section: N and P Exchange Patterns And The Underlying Mechanismsmentioning

confidence: 99%

See 1 more Smart Citation

Nitrogen and Phosphorus Export After Flooding of Agricultural Land by Coastal Managed Realignment

Kristensen

Quintana

Valdemarsen

et al. 2020

Estuaries and Coasts

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“…Land use has been shown to have a significant effect on soil C/N/P stoichiometry, even exhibiting "Redfield-like" ratios (Fazhu et al, 2015). Other studies have shown that land use has little impact on soil nutrient stoichiometry (Alvarez et al, 2018). Frossard et al (2016) suggested that fertilizers applied to soils had little impact on C/N/P ratios, and that soil properties were generally of greater importance.…”

Section: Soilsmentioning

confidence: 99%

The Role of Field‐Scale Management on Soil and Surface Runoff C/N/P Stoichiometry

et al. 2019

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Agricultural runoff is an important contributor to water quality impairment. This study was conducted to evaluate the potential role of field‐scale management on carbon (C), nitrogen (N), and phosphorus (P) stoichiometry in soils and runoff from agricultural fields. Cultivated and pasture fields at the Riesel watersheds in central Texas were used for this analysis, and nutrients were transformed to evaluate relative to the Redfield ratio (106 C/16 N/1 P). Using the Redfield ratio, all soil samples were P depleted relative to C and N. The majority of stormflow and baseflow runoff samples contained 9 to 19% Redfield N relative to C and P. Shifting from inorganic fertilizer application to poultry litter as a fertilizer source resulted in increased absolute C, N, and P concentrations in stormflow and baseflow runoff. Increasing rates of poultry litter application increased the Redfield P relative to Redfield C, whereas Redfield N remained relatively constant at roughly 9 to 11% in stormflow runoff from cultivated fields. This study shows how land use and management can affect C/N/P stoichiometry in stormflow and baseflow runoff. Core Ideas The C/N/P stoichiometry in soil and runoff samples from fields was compared. Soil samples were P depleted relative to N and C. Runoff samples were N depleted relative to P and C. Runoff from pastures had lower C and P concentrations than cultivated fields. High poultry litter rate increased runoff Redfield P while decreasing Redfield C.

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“…Related research on forestry and agriculture suggested that precipitation changes had variable effects on the stoichiometry of soil and rhizosphere soil in different growth stages of different plants, which also varied with the ecological regions (Alvarez et al, 2018; Yao et al, 2015). Nevertheless, the research generally shows that the change of precipitation has led to the decoupling of the relationship between C, N, and P, thereby revealing its significance to soil nutrient limitation and other aspects.…”

Section: Introductionmentioning

confidence: 99%

Effects of precipitation changes on the stoichiometry and photosynthetic characteristics of Stipa bungeana Trin. at different growth stages in the Loess Plateau, China

et al. 2022

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The aim of this study was to explore the response of the stoichiometric and photosynthetic characteristics of a dominant plant species in a typical grassland to changes in precipitation. Rain shelter technology was used to simulate 50%, 100%, and 150% of natural rainfall. The photosynthetic rate (Pn), intercellular CO2 concentration (Ci), transpiration rate (Tr), stomatal conductance (Gs), and ecological stoichiometry of the rhizosphere soil and Stipa bungeana at different growth stages were measured in May, July), and September, 2019 after 2 years of rainfall control. The results showed that the aboveground carbon (C) content of plants grown under 150% precipitation was significantly higher than that of plants grown under 100% precipitation in September. The aboveground nitrogen (N) content of plants under 50% precipitation was significantly higher than the plants grown under 100% precipitation. Under all different precipitation treatments, the aboveground C:N ratio was the lowest (16.4–19.6) in May. The range of average aboveground C: phosphorous (P) ratio was 373.7–617.8, and the N:P ratio in the descending order was July > May > September. The 50% precipitation treatment promoted the highest accumulation of underground C at all the growth stages. The productivity of the grassland under the 100% and 150% precipitation treatments was limited by the rhizosphere soil N and P. The underground C, P, C:P, and aboveground C:N ratios were sensitive indicators. Aboveground and underground N:P ratio showed the strongest significant correlation (P < 0.001), and the correlation between underground stoichiometry and rhizosphere soil P (P < 0.001) was stronger than that with rhizosphere soil N (P < 0.05). The correlation between Ci and stoichiometry was opposite in direction to the correlation between Pn, Tr, Gs, and stoichiometry. The research results will provide a scientific reference for understanding of the material cycle and judgment of vegetation nutrient limitations in the Loess Plateau.

show abstract

Land use affected nutrient mass with minor impact on stoichiometry ratios in Pampean soils

Cited by 12 publications

References 85 publications

Nitrogen and Phosphorus Export After Flooding of Agricultural Land by Coastal Managed Realignment

Nitrogen and Phosphorus Export After Flooding of Agricultural Land by Coastal Managed Realignment

The Role of Field‐Scale Management on Soil and Surface Runoff C/N/P Stoichiometry

Effects of precipitation changes on the stoichiometry and photosynthetic characteristics of Stipa bungeana Trin. at different growth stages in the Loess Plateau, China

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