Decadal Changes in Potassium, Calcium, and Magnesium in a Deciduous Forest Soil

Johnson, Dale W.; Todd, D. E.; Trettin, Carl C.; Mulholland, Patrick J.

doi:10.2136/sssaj2007.0229

Cited by 32 publications

(11 citation statements)

References 22 publications

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“…In the past 22 years, the Ca content in sugar maple trees in the northern forests of the USA has decreased by 17% (Talhelm et al ). Similar cases are found in numerous forests across the USA (Huntington et al ; Schaberg et al ; Johnson et al , ; Goddard et al ; Talhelm et al ), and a range of watersheds and forest soils in Europe (Kirchner and Lydersen ; Jandl et al ), Canada (Jeziorski et al ), Malaysia (Nykvist ), and China (Larssen et al ).…”

Section: Introductionsupporting

confidence: 54%

Arabidopsis transcriptional response to extracellular Ca²⁺ depletion involves a transient rise in cytosolic Ca²⁺

Wang

Tergel

Chen

et al. 2014

JIPB

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Ecological evidence indicates a worldwide trend of dramatically decreased soil Ca(2+) levels caused by increased acid deposition and massive timber harvesting. Little is known about the genetic and cellular mechanism of plants' responses to Ca(2+) depletion. In this study, transcriptional profiling analysis helped identify multiple extracellular Ca(2+) ([Ca(2+) ]ext ) depletion-responsive genes in Arabidopsis thaliana L., many of which are involved in response to other environmental stresses. Interestingly, a group of genes encoding putative cytosolic Ca(2+) ([Ca(2+) ]cyt ) sensors were significantly upregulated, implying that [Ca(2+) ]cyt has a role in sensing [Ca(2+) ]ext depletion. Consistent with this observation, [Ca(2+) ]ext depletion stimulated a transient rise in [Ca(2+) ]cyt that was negatively influenced by [K(+) ]ext , suggesting the involvement of a membrane potential-sensitive component. The [Ca(2+) ]cyt response to [Ca(2+) ]ext depletion was significantly desensitized after the initial treatment, which is typical of a receptor-mediated signaling event. The response was insensitive to an animal Ca(2+) sensor antagonist, but was suppressed by neomycin, an inhibitor of phospholipase C. Gd(3+) , an inhibitor of Ca(2+) channels, suppressed the [Ca(2+) ]ext -triggered rise in [Ca(2+) ]cyt and downstream changes in gene expression. Taken together, this study demonstrates that [Ca(2+) ]cyt plays an important role in the putative receptor-mediated cellular and transcriptional response to [Ca(2+) ]ext depletion of plant cells.

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Section: Introductionsupporting

confidence: 54%

Arabidopsis transcriptional response to extracellular Ca²⁺ depletion involves a transient rise in cytosolic Ca²⁺

Wang

Tergel

Chen

et al. 2014

JIPB

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“…In some cases, these studies did not detect changes (Hazlett et al, 2011;Yanai et al, 2000Yanai et al, , 2005, but other studies have detected decreases in exchangeable base concentrations over several decades (Bailey et al, 2005;Johnson et al, 2008a;Lawrence et al, 2005), and in some soils, changes were apparent during a single decade (Courchesne et al, 2005;Johnson et al, 2008b). …”

mentioning

confidence: 89%

Early Indications of Soil Recovery from Acidic Deposition in U.S. Red Spruce Forests

Lawrence

Shortle

David

et al. 2012

Soil Sci. Soc. Am. j.

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“…Ca release from decomposing CWD can explain this long‐lasting stabilizing effect. Johnson, Todd, Trettin, and Mulholland () noted increased exchangeable Ca as an exception after tree mortality in their study of decadal change in Calcium from Walker Branch Watershed. The increase in exchangeable Ca is also supported by our fine‐scale study of leachate under decaying fallen trees.…”

Section: Discussionmentioning

confidence: 98%

Gap formation and dynamics after long‐term steady state in an old‐growth Picea abies stand in Norway: Above‐ and belowground interactions

Nygaard

Strand

Stuanes

2017

Ecology and Evolution

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Stand dynamics and the gap initiation prior to gap formation are not well‐understood because of its long‐term nature and the scarcity of late‐successional stands. Reconstruction of such disturbance is normally based on historical records and dendroecological methods. We investigated gap initiation and formation at the fine‐scale stand level in the old‐growth reserve of Karlshaugen in Norway. Given its long‐term conservation history, and thorough mapping in permanent marked plots with spatially referenced trees, it provides an opportunity to present stand development before, during, and after gap formation. Late‐successional decline in biomass was recorded after more than 50 years of close to steady state. Gaps in the canopy were mainly created by large old trees that had been killed by spruce bark beetles. Snapping by wind was the main reason for treefall. Long‐term dominance of Norway spruce excluded downy birch and Scots pine from the stand. Comparisons of the forest floor soil properties between the gap and nongap area showed significantly higher concentrations of plant available Ca within the gap area. Plant root simulator (PRS™) probes showed significantly higher supply rates for Ca and Mg, but significantly lower K for the gap compared to the nongap area. Soil water from the gap area had significantly higher C:N ratios compared to the nongap area. Fine‐scale variation with increasing distance to logs indicated that CWD is important for leaking of DOC and Ca. Our long‐term study from Karlshaugen documents gap dynamics after more than 50 years of steady state and a multiscale disturbance regime in an old‐growth forest. The observed disturbance dynamic caused higher aboveground and belowground heterogeneity in plots, coarse woody debris, and nutrients. Our study of the nutrient levels of the forest floor suggest that natural gaps of old‐growth forest provide a long‐lasting biogeochemical feedback system particularly with respect to Ca and probably also N. Norway spruce trees near the gap edge responded with high plasticity to reduced competition, showing the importance of the edge zone as hot spots for establishing heterogeneity, but also the potential for carbon sequestration in old‐growth forest.

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Decadal Changes in Potassium, Calcium, and Magnesium in a Deciduous Forest Soil

Abstract: Abbreviations: CWD, coarse woody debris; DBH, diameter at breast height.

Cited by 32 publications

References 22 publications

Arabidopsis transcriptional response to extracellular Ca²⁺ depletion involves a transient rise in cytosolic Ca²⁺

Arabidopsis transcriptional response to extracellular Ca²⁺ depletion involves a transient rise in cytosolic Ca²⁺

Early Indications of Soil Recovery from Acidic Deposition in U.S. Red Spruce Forests

Gap formation and dynamics after long‐term steady state in an old‐growth Picea abies stand in Norway: Above‐ and belowground interactions

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Decadal Changes in Potassium, Calcium, and Magnesium in a Deciduous Forest Soil

Abstract: Abbreviations: CWD, coarse woody debris; DBH, diameter at breast height.

Cited by 32 publications

References 22 publications

Arabidopsis transcriptional response to extracellular Ca2+ depletion involves a transient rise in cytosolic Ca2+

Arabidopsis transcriptional response to extracellular Ca2+ depletion involves a transient rise in cytosolic Ca2+

Early Indications of Soil Recovery from Acidic Deposition in U.S. Red Spruce Forests

Gap formation and dynamics after long‐term steady state in an old‐growth Picea abies stand in Norway: Above‐ and belowground interactions

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Product

Resources

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Arabidopsis transcriptional response to extracellular Ca²⁺ depletion involves a transient rise in cytosolic Ca²⁺

Arabidopsis transcriptional response to extracellular Ca²⁺ depletion involves a transient rise in cytosolic Ca²⁺