Nitrogen and Phosphorus Cycling in Grazed and Ungrazed Plots in a Temperate Subhumid Grassland in Argentina

Chaneton, Enrique J.; Lemcoff, Jorge Hugo; Lavado, Raúl S.

doi:10.2307/2404751

Cited by 108 publications

(105 citation statements)

References 35 publications

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“…The observation of higher foliar P in grazed plots is similar to patterns found by Turner et al (1993) in Kansas where herbivores were excluded for 10 years and Chaneton et al (1996) in temperate subhumid grassland in Argentina where herbivores were excluded for eight years. The light grazing intensity employed in this study site does not change the grass species composition.…”

Section: Grazing Effects On Soil and Plant Nutrients And Aboveground supporting

confidence: 79%

The effects of herbivory and nutrients on plant biomass and carbon storage in Vertisols of an East African savanna

Ngatia

Turner

Njoka

et al. 2015

Agriculture, Ecosystems & Environment

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Section: Grazing Effects On Soil and Plant Nutrients And Aboveground supporting

confidence: 79%

The effects of herbivory and nutrients on plant biomass and carbon storage in Vertisols of an East African savanna

Ngatia

Turner

Njoka

et al. 2015

Agriculture, Ecosystems & Environment

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“…Moreover, greater availability of labile N in the soil on higher grazing intensity sites could increase plant uptake rate of N [30,35]. In addition, a higher root biomass by increasing grazing intensity was contribution to plant N uptake [36]. Although high N storage in belowground biomass is common in grasslands [37], the effects of grazing intensity on this pattern were different (i.e., HG amplified this pattern compared to MG and LG).…”

Section: Discussionmentioning

confidence: 99%

Impacts of Grazing Intensity on Nitrogen Pools and Nitrogen Cycle in an Alpine Meadow on the Eastern Tibetan Plateau

Gao¹,

Luo²,

Wu³

et al. 2008

Appl Ecol Env Res

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Gao et al.: Impacts of grazing intensity on nitrogen pools and nitrogen cycle in an alpine meadow on the eastern Tibetan Plateau - Abstract. Grazers may influence nitrogen (N) pools and alter N inputs and outputs (losses) to the ecosystem in a number of ways. In this study, we evaluated N pools within the plant-soil system (0-30 cm) and soil N transformation under three different grazing intensities by yaks (light: 1.2, moderate: 2.0, and heavy: 2.9 yaks ha -1 ) in an alpine meadow on the eastern Tibetan Plateau. Total plant and soil N at 0-30 cm depth tended to increase as grazing intensity increasing (plant N: 26.6, 31.4 and 36.7 g m -2 ; soil N: 905, 939 and 1125 g m -2 for light, moderate and heavy grazing, respectively). Soil N transformation rates, such as net N mineralization, gross nitrification, denitrification and N 2 O emissions, generally increased under heavy grazing intensity. Results indicate that heavy grazing intensity accelerated the N cycling rates between system components and leaded to increases in plant-soil system N in this alpine meadow.

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“…Among the reported studies, differences in the response of C and N to grazing are the result of differences in climate, soil properties, community composition, and grazing management practices. Thus, livestock grazing can affect the soil C and N dynamics and storage (Chaneton et al, 1996;Gao et al, 2009). Although inconsistencies in grassland C and N responses to grazing have been reported, several general impacts of grazing on grassland C and N can be identified.…”

Section: Introductionmentioning

confidence: 99%

Effects of grazing on the soil properties and C and N storage in relation to biomass allocation in an alpine meadow

Huang

Zhang

et al. 2011

J. Soil Sci. Plant Nutr.

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Livestock grazing is one of the most important factors influencing the above-ground community composition and structure in a natural grassland ecosystem. Different grazing intensities also have the potential to alter soil C and N storage substantially in grasslands. We conducted a field community study and soil analyses to determine the effects of different grazing intensities on the above-ground community and soil properties in an alpine meadow on the Tibetan Plateau. Our results showed the following: (i) the vegetation height, coverage, and above-ground biomass significantly declined with increased grazing intensity, but the species richness reached the highest level in a moderate grazing intensity meadow; (ii) grazing had a significant positive effect on soil properties in that the soil moisture content, soil organic carbon concentration, soil total nitrogen concentration, soil available nitrogen, soil total phosphorus, and soil available phosphorus significantly increased with increased grazing pressure; and (iii) soil C and N storage also significantly increased with increased grazing pressure; altogether, these increases had a significant positive correlation with the increase of below-ground biomass allocation. Our results indicated that higher grazing intensity might have a potentially positive effect to increase the soil C and N storage in alpine meadows. However, from a long-term perspective, moderate grazing may help to achieve a balance between species diversity protection, livestock production and soil C and N management.

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Nitrogen and Phosphorus Cycling in Grazed and Ungrazed Plots in a Temperate Subhumid Grassland in Argentina

Cited by 108 publications

References 35 publications

The effects of herbivory and nutrients on plant biomass and carbon storage in Vertisols of an East African savanna

The effects of herbivory and nutrients on plant biomass and carbon storage in Vertisols of an East African savanna

Impacts of Grazing Intensity on Nitrogen Pools and Nitrogen Cycle in an Alpine Meadow on the Eastern Tibetan Plateau

Effects of grazing on the soil properties and C and N storage in relation to biomass allocation in an alpine meadow

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