Heavy metals variations in some conifers in Valle d'Aosta (Western Italian Alps) from 1930 to 2000

Orlandi, Marco; Pelfini, Manuela; Pavan, Manuela; Santilli, M.; Colombini, Maria Perla

doi:10.1016/s0026-265x(02)00068-1

Cited by 29 publications

(20 citation statements)

References 9 publications

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“…Therefore, the adequacy of dendrochemistry to historical environment monitoring seems to be strongly dependent on the choice of the tree specie and on the elements to be studied. Although these uncertainties associated with the method, Becnel et al (2004) found a good correlation (0.85 ± 0.03) between Hg in tree rings and lichens and there are many reports published where the analysis of tree-ring chemistry have been successfully used to reconstruct tracemetal deposition from a variety of sources (Watmough 1997;Orlandi et al 2002;Witte et al 2004), using tree rings (Orlandi et al 2002) or tree bar pockets (Satake et al 1996). The shared trends between trees suggest that variations in Hg are related to factors common to all trees and could potentially reflect changes in local environmental conditions.…”

Section: Resultsmentioning

confidence: 96%

“…Tree rings have already been used as bio-geochemical tracers to map the extent of environmental pollution due to anthropoge nic emissions by the different countries (Tommasini et al 2000) and several studies have used dendrochemistry to address environmental pollution from no point sources (Satake et al 1996;Watmough 1997;Orlandi et al 2002;Bindler et al 2004;Witte et al 2004;Becnel et al 2004). However, only a few studies have directly related trace metal levels in wood to changes in metal emissions from suspected pollution sources (Watmough 1997) and comparison with data from other natural archives such as surface sediments have not been made yet to our knowledge.…”

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confidence: 99%

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Tree Rings, Populus nigra L., as Mercury Data Logger in Aquatic Environments: Case Study of an Historically Contaminated Environment

Abreu

Soares

Nogueira

et al. 2008

Bull Environ Contam Toxicol

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In this study, a tree (Populus nigra L.) has been presented as data logger of mercury release in aquatic environments using tree rings chemistry to provide chronological historical monitoring of mercury discharge from a chlor-alkali industrial effluent to a coastal lagoon. Tree rings (Populus nigra L.) as mercury data logger is suggested by mercury accumulation trends in the tree rings reflecting the industrial plant capacity increments in the early stages of mercury discharges and enhancing industrial plant controls to minimize mercury discharges in the last two decades after imposed global regulations on mercury emissions.

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Section: Resultsmentioning

confidence: 96%

mentioning

confidence: 99%

Tree Rings, Populus nigra L., as Mercury Data Logger in Aquatic Environments: Case Study of an Historically Contaminated Environment

Abreu

Soares

Nogueira

et al. 2008

Bull Environ Contam Toxicol

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“…On the positive side, many studies have interpreted variations in dendrochemical concentrations as evidence of environmental change through time (e.g. Baes and McLaughlin 1984;Momoshima and Bondietti 1990;Guyette and Cutter 1994;Yanosky and Kappel 1997;Orlandi et al 2002). On the negative side, other studies have concluded that such an interpretation was not possible (e.g.…”

Section: General Dendrochemistrymentioning

confidence: 99%

Multiple Dendrochronological Signals Indicate the Eruption of ParíCutin Volcano, Michoacán, Mexico

et al. 2008

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The eruption of Parícutin (1943Parícutin ( -1952, a cinder cone volcano in Michoacá n, Mexico, caused dendrochronological and dendrochemical responses that might be useful as general dating tools for eruptions. For the eruption period, pines near Parícutin have slightly suppressed ring widths plus high inter-annual variability of width. Wood anatomy changes include traumatic resin ducts and thin bands of false latewood. Dendrochemistry of tree rings shows little temporal variation in most elements, but beginning in 1943 sulfur content increased in rings of four trees and phosphorus content increased in rings of two trees. Hypotheses for increased S and P include new availability of pre-existing soil S and P and/or new input of S and P from the tephra itself. Pines at Parícutin also show suppressed ring widths for five years beginning in 1970, and had the eruption date not been known, the most likely conclusion from ring-width data alone would have been an eruption from 1970 to 1974. However, the 1970s suppression was in response to defoliation by a pine sawfly outbreak, not an eruption. For dendrochronological dating of cinder-cone eruptions, a combination of multiple characteristics (width, chemistry, and anatomy) would be more reliable than depending on any one characteristic alone.

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“…Therefore, temporal changes in chemistry in tree rings can be used as a suitable indicator for historical and ongoing processes in the rooting zone of soils (Augustin et al, 2005;Berger et al, 2004;Ferretti et al, 2002;Poszwa et al, 2003). Coniferous species, as well as broadleaved ones, have been widely used to reveal the impacts of pollution on forest health (Kuang et al, 2007;Kurczyńska et al, 1997;Yilmaz and Zengin 2004), and have frequently been selected as surrogates for reconstructing the history of environmental pollution, such as the emission of heavy metals (Baes III and Mclaughlin 1984;Orlandi et al, 2002;Padilla and Anderson 2002;Punshon et al, 2005), the deposition of nitrogen (Saurer et al, 2004) and the changes in soil chemistry (Augustin et al, 2005;Berger et al, 2004;Guyette et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

Reconstruction of soil pH by dendrochemistry of Masson pine at two forested sites in the Pearl River Delta, South China

et al. 2008

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Abstract• Soil acidification is a global concern. Base cation (Ca, Mg, Mn and Al) concentrations, as well as their molar ratios, were measured in tree rings of Masson pines (Pinus massoniana L.) from Dinghushan and Xiqiaoshan to reconstruct the historical changes in soil acidification in the Pearl River Delta, south China.• In Dinghushan, Ca and Mn xylem concentrations yielded significant correlations with the higher soil pHs, and Ca and Mg with the lower soil pHs. In Xiqiaoshan, only xylem Mn concentration correlated significantly with the soil pH in both layers. Significant correlations between xylem molar ratios and soil pH were revealed for Ca/Mn, Mg/Mn, Mn/Al and Ca/Al in the upper soils and for the same ratios except for Ca/Al in the deeper soils in Dinghushan. The same correlations were revealed for Ca/Mn, Mg/Mn and Mn/Al at both depths in Xiqiaoshan.• Soil pHs at 0-10 cm and 10-40 cm depths at the study sites were reconstructed by the molar ratios of Mg/Mn and Ca/Mn in the xylem of Masson pines, respectively.• Cation molar ratios in the xylem of Masson pine were superior to the single Ca, Mg, Mn and Al for soil acidity reconstruction in the Delta of China. Mots-clés :dendrochimie / cerne d'arbre / reconstruction du pH du sol / Pinus massoniana / Delta Pearl River Résumé -Reconstruction du pH du sol par dendrochimie chez Pinus massoniana dans deux stations forestières du delta de la Pearl River, dans le sud de la Chine.• L'acidification du sol est un phénomène important à l'échelle mondiale. Les concentrations en cations (Ca, Mg, Mn et Al) aussi bien que leurs rapports molaires dans les cernes des pins (Pinus massoniana L.) de Dinghushan et Xiqiaoshan ont été mesurées pour reconstruire les changements historiques d'acidification du sol dans le delta de la Pearl River, dans le sud de la Chine.• À Dinghushan, les concentrations en Ca et Mn du xylème présentent des corrélations significatives avec les pH de la partie supérieure du sol, Ca et Mg, avec les pH de la partie inférieure du sol. À Xiqiaoshan, seule la concentration en Mn du xylème est corrélée significativement avec les pH du sol dans les deux horizons. Des corrélations significatives entre rapports molaires dans le xylème et les pH du sol ont été mises en évidences pour Ca/Mn, Mg/Mn, Mn/Al et Ca/Al dans les parties supérieures des sols et pour les mêmes rapports sauf Ca/Al dans les parties profondes des sols à Dinghushan. Des corrélations semblables ont été révélées pour Ca/Mn, Mg/Mn et Mn/Al dans les deux profondeurs à Xiqiaoshan.• Les pH du sol à 0-10 cm et 10-40 cm de profondeur dans les sites d'étude ont été reconstruits à partir des rapports molaires de Mg/Mn et Ca/Mn dans le xylème des pins. Les rapports molaires des cations dans le xylème des pins étaient supérieurs au seul Ca, Mg, Mn et Al pour la reconstruction de l'acidité du sol dans le Delta de la Chine.

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Heavy metals variations in some conifers in Valle d'Aosta (Western Italian Alps) from 1930 to 2000

Cited by 29 publications

References 9 publications

Tree Rings, Populus nigra L., as Mercury Data Logger in Aquatic Environments: Case Study of an Historically Contaminated Environment

Tree Rings, Populus nigra L., as Mercury Data Logger in Aquatic Environments: Case Study of an Historically Contaminated Environment

Multiple Dendrochronological Signals Indicate the Eruption of ParíCutin Volcano, Michoacán, Mexico

Reconstruction of soil pH by dendrochemistry of Masson pine at two forested sites in the Pearl River Delta, South China

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