Factors affecting soil P dynamics in temperate volcanic soils of southern Argentina

Satti, Patricia; Mazzarino, Marı́a Julia; Roselli, Lucia; Crego, Paula

doi:10.1016/j.geoderma.2007.02.005

Cited by 55 publications

(67 citation statements)

References 38 publications

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“…Gustafsson et al (2012) presented that the rise of pH would weaken the P adsorption in soil under alkaline conditions (pH N7). Additionally, higher salinity would exert negative effects on TP levels in wetland soils (Liu et al, 2012).TPS were significantly positively correlated with Al (p b 0.01), because high P retention in soil was mainly attributed to the active Al in organic and mineral fractions (Igwe et al, 2010;Satti et al, 2007). AP decreased significantly with soil depth (Fig.…”

Section: Effects Of Environmental Factors On Soil Pmentioning

confidence: 96%

Spatial and seasonal distributions of soil phosphorus in a short-term flooding wetland of the Yellow River Estuary, China

Gao

Han

Bai

et al. 2016

Ecological Informatics

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Soil cores were collected at a depth of 60 cm along a sampling belt perpendicular to the Yellow River of the Yellow River Estuary and were collected in both summer and fall of 2007 and the spring of 2008 to investigate spatial and seasonal dynamics of soil phosphorus in a short-term flooding wetland. Our results showed that total phosphorus (TP) levels were lowest in spring, followed by those in summer and the maximum level was in fall along the sampling belt. Lower TP levels were observed at Site 3 in summer and fall, whereas the lowest TP levels appeared at Site 1 in spring. All available phosphorus (AP) levels were higher in fall than that in spring except for Site 4. However, in summer, AP contents showed a "decreasing before increasing" tendency along the sampling belt. TP contents in profile soils exhibited a decreasing tendency from summer to next spring, whereas AP levels increased slightly from summer to fall and decreased from fall to the next spring. TP contents increased and then decreased along soil profiles in summer and spring, whereas they showed a "decreasing before increasing" tendency in fall. The mean AP levels and AP: TP ratios generally decreased along soil profiles in three sampling seasons. TP stocks ranged from 419.40 mg m −2 to 578.45 mg m −2 and generally exhibited an increasing tendency from Site 1 to Site 5. Approximately 50% of TP stocks accumulated in the top 20 cm soils. Higher TP stocks in the top 60 cm soils were observed in summer and fall at each of five sampling sites than in spring (p b 0.05). Correlation analysis showed that Soil TP levels were significantly correlated with soil bulk density (BD) and salinity, and AP contents were significantly correlated with soil depth and pH values. TP stocks were significantly impacted by TP, BD and pH values.

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Section: Effects Of Environmental Factors On Soil Pmentioning

confidence: 96%

Spatial and seasonal distributions of soil phosphorus in a short-term flooding wetland of the Yellow River Estuary, China

Gao

Han

Bai

et al. 2016

Ecological Informatics

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“…In volcanic soils Broquen et al (2005) and Satti et al (2007) investigated acidification processes in a forest Andisol climatic sequence; they found that in drier climates a less strong Al and P retention occurred. In Chilean Andisols, there are several reports on P fractionation; some of them include 31 P-NMR analysis (Borie and Zunino, 1983;Borie et al, 2002;Redel et al, 2007;2008;Velásquez et al, 2016a, b) and pyrophosphate/ oxalate Al and Fe determinations (Mora and Canales, 1995;Matus et al, 2006;Panichini et al, 2012).…”

Section: In Volcanic Soils the Formation Of Complexes Betweenmentioning

confidence: 99%

Assessment of phosphorus status influenced by Al and Fe compounds in volcanic grassland soils

Redel

Cartes

Demanet

et al. 2016

J. Soil Sci. Plant Nutr.

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Volcanic ash derived soils represent between 50-60% of the total arable land area of southern of Chile, and they are the most important soils for pasture production. In these soils, high phosphorus (P) fixation and, in turn, low P availability and high aluminium (Al) soluble concentrations (at low pH) are the most limiting factors for pasture production. At the same time, the complexes between Al-or iron-(Fe) and organic matter as well as short-range order alumino-silicates (allophane) allow the retention of huge quantities of soil P. The aim of this work was to assess the status of P by both sequential extraction procedure (Hedley) and 31 P-NMR analysis as influenced by Al and Fe in volcanic grasslands Andisols (Pemehue, Gorbea, Piedras Negras and Llastuco Soil Series) from Southern Chile. We applied Hedley chemical sequential fractionation to soils in order to examine the potential differences in extractable soil inorganic P (P i ) and organic P (P o ) fractions. We also determined total P and Olsen P in these grassland Andisols. Oxalate and pyrophosphate were employed to determine the active and organic matter complexed Al and Fe, respectively. Furthermore, we quantified Al and Fe in extracts of the Hedley P fractions. We found that Al extracted in oxalate was correlated positively with labile P o concentration, specifically with both the NaHCO 3 -P o (r=0.45, P≤0.01), and the NaOH-P o (r=0.43, P≤0.01) fractions. This observation was reinforced by 31 P-NMR analysis that showed higher monoester P and myo-IP 6 content in soils with higher amounts of oxalate Al. Hedley sequential fractionation procedure confirmed the role of Al in the NaOH-P o fraction for promoting P o storage, as both fractions were correlated (r=0.33, P≤0.05). In addition, Fe plays a substantial role in recalcitrant P accumulation as we found a high correlation between residual P and oxalate Fe (r=0.55, P≤0.01).

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“…Today most of the island is covered by forest dominated by native Nothofagus dombeyi (Nothofagaceae; primarily ectomycorrhizal) and Austrocedrus chilensis (Cupressaceae; arbuscular mycorrhizal). Soils of the study area are volcanic soils (andisols) typified by low levels of available phosphorus (Satti et al 2007) (see Appendix A).…”

Section: Study Areamentioning

confidence: 99%

Lack of belowground mutualisms hinders Pinaceae invasions

Núñez

Horton

Simberloff

2009

Ecology

303

302

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Abstract. Why particular invasions succeed and others fail is not well understood. The role of soil biota has been proposed as important. However, the role of mutualists has received much less attention than that of pathogens. Here we report that lack of adequate ectomycorrhizal fungi hinders invasion by exotic Pinaceae on Isla Victoria, Argentina, by reducing both the probability of establishment and growth of invading individuals. More than one hundred exotic tree species were introduced to this island ca. 80 years ago, but invasive trees are found in high densities only in areas adjacent to plantations. With a series of greenhouse and field experiments we found lower mycorrhizal colonization levels and few fungal species far from original plantings, and key fungal mutualists are confined to areas near plantations, probably owing to dispersal limitations. Low inoculum levels far from the plantations are retarding the invasion. Our experiments indicate that positive interactions belowground can play a key but underappreciated role in invasion dynamics.

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Factors affecting soil P dynamics in temperate volcanic soils of southern Argentina

Cited by 55 publications

References 38 publications

Spatial and seasonal distributions of soil phosphorus in a short-term flooding wetland of the Yellow River Estuary, China

Spatial and seasonal distributions of soil phosphorus in a short-term flooding wetland of the Yellow River Estuary, China

Assessment of phosphorus status influenced by Al and Fe compounds in volcanic grassland soils

Lack of belowground mutualisms hinders Pinaceae invasions

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