Phosphorus in Soils of Temperate Forests: Linkages to Acidity and Aluminum

SanClements, Michael D.; Fernandez, Ivan J.; Norton, Stephen A.

doi:10.2136/sssaj2009.0267

Cited by 30 publications

(13 citation statements)

References 55 publications

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“…4). This is in accordance with results of SanClements et al (2010). They showed that the dominant chemical fraction of P in a study of six watersheds in the eastern United States and Europe of soils under temperate forests was (i) associated with secondary Al and organic phases and (ii) responsive to experimental acidification.…”

Section: Effects Of Pedogenesis and Podzolization On Spatial Pattesupporting

confidence: 90%

Spatial Patterns of Phosphorus Fractions in Soils of Temperate Forest Ecosystems with Silicate Parent Material

Werner

Haye

Spielvogel

et al. 2016

Preprint

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Abstract. The stage of pedogenesis is a crucial indicator describing phosphorus (P) distribution, but also governing spatial 10 P distribution patterns. Here, we assessed spatial patterns of P fractions and major P binding partners (e.g. organic C, pedogenic Fe and Al minerals) in a geosequence to describe spatial and pedogenetic changes of P distribution and to identify mechanisms for these changes. We found, that the distribution of total P was generally best matched by the distribution pattern of organic P, both showing decreasing content from the top-to the subsoil. Inorganic P was mainly ascribed as bound in unweathered rock at all sites, but with decreasing importance in later stages of pedogenesis. The pedogenetically young 15 soil at Bad Brückenau also showed adsorbed inorganic P in the topsoil, probably due to high mineralization of organic P.Soil organic matter (SOM)-sesquioxide-complexes, as well as Al and Fe oxyhydroxides were identified as main binding partners of organic P at all stages of pedogenesis. With depth, the correlations of various P fractions with SOM decreased, whereas those with pedogenic Fe and Al oxyhydroxides increased. The change of sorbent is due to the mobilization of first Al, and in later stages of pedogenesis, of Fe in the topsoil. Both metals and its oxyhydroxides (Al(OH) i , Fe(OH) i ) probably 20 formed strong complexes with SOM and therefore retained P in the pedon. Due to the heterogeneous P distribution, our results suggest a differing ecosystem P nutrition strategy at each of our sites: from acquiring inorganic P from weathered primary rock to minimizing loss of organic P by recycling. We argue that even in early stages of pedogenesis, P recycling is a major driver of ecosystem P nutrition, however not as important as in later stages. We conclude that the stage of pedogenesis in silicate soils, as e.g. visible in degree and state of podzolization, serves as predictor for plant and microbial P 25 nutritional strategies.

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Section: Effects Of Pedogenesis and Podzolization On Spatial Pattesupporting

confidence: 90%

Spatial Patterns of Phosphorus Fractions in Soils of Temperate Forest Ecosystems with Silicate Parent Material

Werner

Haye

Spielvogel

et al. 2016

Preprint

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“…In the EML watershed, intense soil leaching during snowmelt, high soil hydraulic conductivity (0.1 to 0.01 mm s −1 ) (Brown et al, 1990), and volcanic glass deposited during Pleistocene and Holocene eruptions (Wood, 1977) favor the formation of Al clay minerals (Burkins et al, 1999;Dahlgren et al, 1997), with important implications for P retention. Unlike Fe, Al-oxides are insensitive to redox, have a high affinity for P, and can therefore minimize P losses (Kana and Kopacek, 2006;SanClements et al, 2009SanClements et al, , 2010. Supporting the important role of Al in regulating P export, was the fact that the majority of P, as well as exogenous P additions, were recovered in the NaOH-extractable P pool (Figs.…”

Section: Soil P Retentionmentioning

confidence: 90%

Pools, transformations, and sources of P in high-elevation soils: Implications for nutrient transfer to Sierra Nevada lakes

2014

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In high-elevation lakes of the Sierra Nevada (California), increases in P supply have been inferred from shifts in P to N limitation. To examine factors possibly leading to changes in P supply, we measured pools and transformations in soil P, and developed a long-term mass balance to estimate the contribution of parent material weathering to soil P stocks. Common Sierra Nevada soils were found to not be P-deficient and to be retentive of P due to the influence of Fe-and Al-oxides. Total P averaged 867 μg P g −1 in the top 10 cm of soil (O and A horizons) and 597 μg P g −1 in the 10-60 cm depth (B horizons), of which 70% in A horizons and 60% in B horizons was freely exchangeable or associated with Fe and Al. Weathering of parent material explained 69% of the P found in soils and lost from the catchment since deglaciation, implying that long-term atmospheric P deposition (0.02 kg ha) represented the balance of P inputs (31%) during the past 10,000 years of soil development. During spring snowmelt~27% of the total soil P was transferred between organic and inorganic pools; average inorganic P pools decreased by 232 μg P g −1 , while organic P pools increased by 242 μg P g −1 .Microbial biomass P was highest during winter and decreased six-fold to a minimum in the fall. Interactions between hydrology and biological processes strongly influence the rate of P transfer from catchment soils to lakes.

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“…There were no significant differences in exchangeable Al between WB and EB watershed soils [60], therefore it is not surprising that foliar Al concentrations did not significantly differ between the watersheds. Aluminum can accumulate within plant tissue throughout the growing season [61] as was seen for all species at BBWM.…”

Section: Chemical Phenologymentioning

confidence: 86%

“…and current year P. rubens were evident in the first two weeks of May and first week of June, respectively, prior to our first sampling in this study, when leaves were less than 25% expanded. Findings of greater foliar P concentrations in the WB watershed are likely a result of altered soil P dynamics due to long-term acidification [60]. Foliar P is present in phospholipids, nucleic acids, enzymes, and proteins as well as being an essential component of energy storage and the transfer molecules adenosine diphosphate (ADP) and adenosine triphosphate (ATP) and phosphorolated sugars produced by the photosynthetic carbon reduction (PCR) cycle [61].…”

Section: Chemical Phenologymentioning

confidence: 99%

Phenology at the Bear Brook Watershed in Maine, USA: Foliar Chemistry and Morphology

Redding¹,

Fernandez²,

Day³

et al. 2013

AJPS

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Annual developmental events in biological systems are dependent, in part, on environmental conditions and can be valuable bio-indicators of environmental change. Many studies have been done on the effects of temperature and photoperiod on phenophases, but fewer have explored the consequences of nutrient availability in terrestrial ecosystems on forest phenology. Here we examined phenological phenomena at a long-term experimental forested watershed subjected to decadal-scale ecosystem acidification and nitrogen (N) enrichment. Phenophases of Acer rubrum, Acer saccharum, and Picea rubens in both watersheds were observed throughout the 2010 growing season and included bud burst, flowering (A. rubrum), leaf or needle emergence and unfolding, leaf senescence (Acer spp.), and leaf fall (Acer spp). Clear species-specific phenological patterns were observed, but no treatment effects were evident. Chemical phenology of canopy tree foliage was also examined on a monthly basis from May through October 2010. Nitrogen was the only element that was significantly higher in the WB watershed for all species, although not all months showed significant differences. Other treatment differences in elemental composition of foliage are discussed. Foliar N and P concentrations decreased in all species throughout the growing season, while foliar Ca, K, and Al concentrations increased or were constant. This study found clear species-specific patterns of morphological and chemical phenology with time, but did not show evidence for visible alterations in seasonal development as a result of ecosystem acidification and N enrichment. Treatment effects on chemical phenology, as applied here, showed some responses and warrant further consideration for application to coupled chemical-biological indicators of a changing chemical and physical climate.

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Phosphorus in Soils of Temperate Forests: Linkages to Acidity and Aluminum

Cited by 30 publications

References 55 publications

Spatial Patterns of Phosphorus Fractions in Soils of Temperate Forest Ecosystems with Silicate Parent Material

Spatial Patterns of Phosphorus Fractions in Soils of Temperate Forest Ecosystems with Silicate Parent Material

Pools, transformations, and sources of P in high-elevation soils: Implications for nutrient transfer to Sierra Nevada lakes

Phenology at the Bear Brook Watershed in Maine, USA: Foliar Chemistry and Morphology

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