Soilaluminum, Iron, and Phosphorus Dynamics in Response to Long-Term Experimental Nitrogen and Sulfur Additions at the Bear Brook Watershed in Maine, USA

Sherman, Jessica F.; Fernandez, Ivan J.; Norton, Stephen A.; Ohno, Tsutomu; Rustad, Lindsey E.

doi:10.1007/s10661-005-9140-2

Cited by 37 publications

(23 citation statements)

References 23 publications

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“…In agreement with other studies we found that microbial biomass P is large in comparison to extractable P (Walbridge et al 1991). Sherman et al (2006) hypothesized that soil acidity arising from atmospheric deposition could increase mobilization of Al and Fe along with any bound P, and that changes in P would depend upon forest type. In hardwood forests, biotic uptake of mobilized P prevents P loss.…”

Section: Links Among Biogeochemical Cycles With N Fertilizationsupporting

confidence: 93%

The phosphorus status of northern hardwoods differs by species but is unaffected by nitrogen fertilization

et al. 2009

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Northern hardwood forests in the eastern US exhibit species-specific influences on nitrogen (N) cycling, suggesting that their phosphorus (P) cycling characteristics may also vary by species. These characteristics are increasingly important to understand in light of evidence suggesting that atmospheric N deposition has increased N availability in the region, potentially leading to phosphorus limitation. We examined how P characteristics differ among tree species and whether these characteristics respond to simulated N deposition (fertilization). We added NH 4 NO 3 fertilizer (50 kg ha -1 year -1 ) to singlespecies plots of red oak (Quercus rubra L.), sugar maple (Acer saccharum Marsh.), eastern hemlock (Tsuga canadensis (L.) Carr.), American beech (Fagus grandifolia Ehrh.), and yellow birch (Betula alleghaniensis Britt.), in the Catskill Mountains, New York from 1997 to 2007. Species differences were observed in foliar, litter and root P concentrations, but all were unaffected by a cumulative N fertilization of 550 kg/ha. Similarly, measures of soil P availability and biotic P sufficiency differed by species but were unaffected by N fertilization.Results suggest species exhibit unique relationships to P as well as N cycles. We found little evidence that N fertilization leads to increased P limitation in these northern hardwood forests. However, species such as sugar maple and red oak may be sufficient in P, whereas beech and hemlock may be less sufficient and therefore potentially more sensitive to future Nstimulated P limitation.

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Section: Links Among Biogeochemical Cycles With N Fertilizationsupporting

confidence: 93%

The phosphorus status of northern hardwoods differs by species but is unaffected by nitrogen fertilization

et al. 2009

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“…as reported by Sherman et al (2006) in a study about long-term acidification in spodic forest soils in Maine, USA. However, we also suggest analyzing the spatial patterns of P binding partners to explain the heterogeneity of P fractions in soil during pedogenesis.…”

Section: Factor Analysis 20supporting

confidence: 65%

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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“…This difference in extractable P was attributable to the relatively low abiotic affinity for P in organic soil materials, compared to the high P fixation capacity typical of acidic Al-and Fe-rich forest soils where P cycling has been demonstrated to be highly vertically stratified (Wood et al 1984;Yanai 1992). The only significant differences in concentrations potentially attributable to treatments were for lower extractable P concentrations in the WB 25-C cm-depth increment, which could be attributable to P depletion with metal mobilization in these soils as a result of acidification (Sherman et al 2006;SanClements 2009).…”

Section: Bbwm Soil Chemistry-2006mentioning

confidence: 89%

Soil chemical and physical properties at the Bear Brook Watershed in Maine, USA

SanClements

Fernandez

Norton

2010

Environ Monit Assess

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Acidic deposition leads to the acidification of waters and accelerated leaching and depletion of soil base cations. The Bear Brook Watershed in Maine has used whole-watershed chemical manipulations to study the effects of elevated N and S on forest ecosystem function on a decadal time scale. The objectives of this study were to define the chemical and physical characteristics of soils in both the reference and treated watersheds after 17 years of treatment and assess evidence of change in soil chemistry by comparing soil studies in 1998 and 2006. Results from 1998 confirmed depletion of soil base cation pools and decreased pH due to elevated N and S within the treated watershed. However, between 1998 and 2006, during a period of declining SO4(2-) deposition and continued whole-watershed experimental acidification on the treated watershed, there was little evidence of continued soil exchangeable base cation concentration depletion or recovery. The addition of a pulse of litterfall and accelerating mineralization from a severe ice storm in 1998 may have had significant effects on forest floor nutrient pools and cycling between 1998 and 2006. Our findings suggest that mineralization of additional litter inputs from the ice storm may have obscured temporal trends in soil chemistry. The physical data presented also demonstrate the importance of coarse fragments in the architecture of these soils. This study underscores the importance of long-term, quantitative soil monitoring in determining the trajectories of change in forest soils and ecosystem processes over time.

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Soilaluminum, Iron, and Phosphorus Dynamics in Response to Long-Term Experimental Nitrogen and Sulfur Additions at the Bear Brook Watershed in Maine, USA

Cited by 37 publications

References 23 publications

The phosphorus status of northern hardwoods differs by species but is unaffected by nitrogen fertilization

The phosphorus status of northern hardwoods differs by species but is unaffected by nitrogen fertilization

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

Soil chemical and physical properties at the Bear Brook Watershed in Maine, USA

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