Soil phosphorus fractionation and nutrient dynamics along the Cooloola coastal dune chronosequence, southern Queensland, Australia

Chen, Chengrong; Hou, Enqing; Condron, Leo M.; Bacon, Gary; Esfandbod, Mohsen; Olley, Jon; Turner, Benjamín L.

doi:10.1016/j.geoderma.2015.04.027

Cited by 67 publications

(65 citation statements)

References 37 publications

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“…We also show the reported trajectory of soil pH in another semi-arid chronosequence (SAGA; Selmants & Hart 2008 and other mesic ones (e.g. Coolola: Chen et al 2015;Franz Josef: Richardson et al 2004;Haast: Turner et al 2012;Hawaii: Crews et al 1995;Lake Michigan: Lichter 1998;TJBD: Laliberte et al 2012;Waitutu: Williamson, Wardle & Yeates 2005), which tended to start at pH values below 6Á5°C. We highlight the role of precipitation in driving changes in soil pH, by showing the negative relationship between mean pH values (minimum and maximum values respectively) and mean annual precipitation reported for each chronosequence included.…”

Section: Patterns Among-chronosequencessupporting

confidence: 55%

Microbial communities in soil chronosequences with distinct parent material: the effect of soil pH and litter quality

et al. 2017

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Summary During soil development, bacteria and fungi can be differentially affected by changes in soil biogeochemistry. Since the chemistry of parent material affects soil pH, nutrient availability, and indirectly litter quality, we hypothesize that parent material has an important influence on microbial community patterns during long‐term soil development. In this paper, we tested for the effect of parent material, as well as, soil and litter properties upon microbial community patterns in three c. 20 000‐year‐old semi‐arid chronosequences developed on sedimentary and volcanic (i.e. Andesitic and Dacitic) soils in the Dry Puna of Bolivia. We evaluated microbial patterns by analysing the terminal restriction fragment length polymorphism from amplified bacterial 16S rRNA genes, and the fungal internal transcribed spacer region, and quantitative real‐time polymerase chain reaction. Soil and litter characteristics differed significantly between the Sedimentary and volcanic chronosequences. In particular, soil pH was alkaline in all stages of the Sedimentary chronosequence; whereas it changed from alkaline to near neutral across stages in both volcanic chronosequences. Composition of bacterial communities changed across volcanic chronosequences, and this change was associated with a reduction in soil pH and increases in litter quality, whereas no differences were found in the Sedimentary chronosequence. Fungal community composition, in contrast, did not change across any chronosequence. Relative microbial abundance, expressed as the fungal:bacterial ratio, declined across stages of the Sedimentary chronosequence in association with decreases in TC and TP, whereas in the Andesitic chronosequence decreases in fungal:bacterial ratios were related with increases in litter quality and declines in soil pH. Synthesis. Our results show the importance of parent material in affecting bacterial and fungal communities during soil development. Further, in semi‐arid chronosequences, fungal:bacterial ratios tend to decline given that soil pH in young soils is rather alkaline. Our results also are consistent with the general framework that highlights the importance of above‐ground (i.e. litter quality) and below‐ground (i.e. soil properties) in affecting microbial relative abundance and community composition during soil development.

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Section: Patterns Among-chronosequencessupporting

confidence: 55%

Microbial communities in soil chronosequences with distinct parent material: the effect of soil pH and litter quality

et al. 2017

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“…(4) Total P concentrations are assumed to be controlled by the P content of the parent soil material (Turner and Engelbrecht 2011), which is homogeneous within the study sites. Furthermore, published information on the heterogeneity of P concentrations in soil within an area of uniform morphology and geology pointed to only small variation with coefficients of variation less than 10% (e.g., Turner et al 2012;Chen et al 2015).…”

Section: Soil Sampling and Fractionationmentioning

confidence: 99%

Soil phosphorus supply controls P nutrition strategies of beech forest ecosystems in Central Europe

et al. 2017

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Phosphorus availability may shape plantmicroorganism-soil interactions in forest ecosystems. Our aim was to quantify the interactions between soil P availability and P nutrition strategies of European beech (Fagus sylvatica) forests. We assumed that plants and microorganisms of P-rich forests carry over mineral-bound P into the biogeochemical P cycle (acquiring strategy). In contrast, P-poor ecosystems establish tight P cycles to sustain their P demand (recycling strategy). We tested if this conceptual model on supply-controlled P nutrition strategies was consistent with data from five European beech forest ecosystems with different parent materials (geosequence), covering a wide range of total soil P stocks (160-900 g P m -2 ; \1 m depth). We analyzed numerous soil chemical and biological properties. Especially P-rich beech ecosystems accumulated P in topsoil horizons in moderately labile forms. Forest floor turnover rates decreased with decreasing total P stocks (from 1/5 to 1/40 per year) while ratios between organic carbon and organic phosphorus (C:P org ) increased from 110 to 984 (A horizons). High proportions of fine-root biomass in forest floors seemed to favor tight P recycling. Phosphorus in fine-root biomass increased relative to microbial P with decreasing P stocks. Concomitantly, phosphodiesterase activity decreased, which might explain increasing proportions of diester-P remaining in the soil organic matter. With decreasing P supply indicator values for P acquisition decreased and those for recycling increased, implying adjustment of plantmicroorganism-soil feedbacks to soil P availability. Intense recycling improves the P use efficiency of beech forests.

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“…Delgado-Baquerizo et al [2013] argued that C, N, and P cycles became decoupled with increasing aridity (manifested as decreases in soil C:P and N:P ratios), which they attributed to differences in the response of P to increasing aridity compared to the responses of C and N. Wardle [2013] commented that these decoupled nutrient cycles with increasing aridity operated in the opposite direction of ecosystem development. It could be argued therefore that climate might have similar effects on soil genesis and P cycling as time, with wetter soils equating to older soils in terms of greater P loss, wider C:P ratios, and stronger P limitation of biological processes [Walker and Syers, 1976;Crews et al, 1995;Selmants and Hart, 2010;Chen et al, 2015;Turner and Laliberté, 2015]. Consistent with this, Ippolito et al [2010] observed a distinct decrease in Ca-bound P and an increase in occluded P with increasing precipitation across the central Great Plains in the USA, indicating the strong effect of precipitation on pedogenesis and P transformations in drier ecosystems.…”

Section: Walker and Syersmentioning

confidence: 99%

“…They observed substantial transformations of soil P with pedogenesis across several soil sequences in New Zealand, including chronosequences, toposequences, and hydrosequences [ Walker and Syers , ]. Although particular emphasis has been placed subsequently on P transformations along soil chronosequences [ Crews et al ., ; Turner et al ., ; Selmants and Hart , ; Turner and Condron , ; Chen et al ., ; Turner and Laliberté , ], relatively few studies have examined climosequences [ Ippolito et al ., ; Emadi et al ., ] or toposequences [ Roberts et al ., ; Agbenin and Tiessen , ].…”

Section: Introductionmentioning

confidence: 99%

Phosphorus transformations along a large‐scale climosequence in arid and semiarid grasslands of northern China

Feng

Turner

Lü

et al. 2016

Global Biogeochemical Cycles

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The Walker and Syers model of phosphorus (P) transformations during long‐term soil development has been verified along many chronosequences but has rarely been examined along climosequences, particularly in arid regions. We hypothesized that decreasing aridity would have similar effects on soil P transformations as time by increasing the rate of pedogenesis. To assess this, we examined P fractions in arid and semiarid grassland soils (0‐10 cm) along a 3700 km aridity gradient in northern China (aridity between 0.43 and 0.97, calculated as 1 − [mean annual precipitation/potential evapotranspiration]). Primary mineral P declined as aridity decreased, although it still accounted for about 30% of the total P in the wettest sites. In contrast, the proportions of organic and occluded P increased as aridity decreased. These changes in soil P composition occurred in parallel with marked shifts in soil nutrient stoichiometry, with organic carbon:organic P and nitrogen:organic P ratios increasing with decreasing aridity. These results indicate increasing abundance of P relative to carbon or nitrogen along the climosequence. Overall, our results indicate a broad shift from abiotic to biotic control on P cycling at an aridity value of approximately 0.7 (corresponding to about 250 mm mean annual rainfall). We conclude that the Walker and Syers model can be extended to climosequences in arid and semiarid ecosystems and that the apparent decoupling of nutrient cycles in arid soils is a consequence of their pedogenic immaturity.

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Soil phosphorus fractionation and nutrient dynamics along the Cooloola coastal dune chronosequence, southern Queensland, Australia

Cited by 67 publications

References 37 publications

Microbial communities in soil chronosequences with distinct parent material: the effect of soil pH and litter quality

Microbial communities in soil chronosequences with distinct parent material: the effect of soil pH and litter quality

Soil phosphorus supply controls P nutrition strategies of beech forest ecosystems in Central Europe

Phosphorus transformations along a large‐scale climosequence in arid and semiarid grasslands of northern China

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