Biomonitoring

Lange, Clifford R.; Lambert, Karl E.

doi:10.2175/106143095x135976

Cited by 7 publications

(5 citation statements)

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“…This study exemplifies two different strategies used by organisms in order to grow in adverse conditions. This type of molecular-level information is particularly important in the selection of suitably adapted lichens and higher plants for the biomonitoring (31) and phytoremediation (32)(33)(34) of contaminated areas.…”

Section: Resultsmentioning

confidence: 99%

Mechanisms of Lichen Resistance to Metallic Pollution

Sarret

Manceau

Cuny

et al. 1998

Environ. Sci. Technol.

179

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Some lichens have a unique ability to grow in heavily contaminated areas due to the development of adaptative mechanisms allowing a high tolerance to metals. Here we report on the chemical forms of Pb and Zn in the metal hyperaccumulator Diploschistes muscorum and of Pb in the metal tolerant lichen Xanthoria parietina. The speciation of Zn and Pb has been investigated by powder X-ray diffraction (XRD) and extended X-ray absorption fine structure (EXAFS) spectroscopy using the advanced third-generation synchrotron radiation source of the European synchrotron radiation facility (ESRF in Grenoble). This study reveals that in both lichens cells are protected from toxicity by complexation of heavy metals, but the strategies differ: in D. muscorum, Pb and Zn are accumulated through an enhanced synthesis of oxalate, which precipitates toxic elements as insoluble salts, whereas in X. parietina, Pb is complexed to carboxylic groups of the fungal cell walls. We conclude that hyperaccumulation of metals results from a reactive mechanism of organic acid production, whereas metallo-tolerance is achieved by a passive complexation to existing functional groups.

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Section: Resultsmentioning

confidence: 99%

Mechanisms of Lichen Resistance to Metallic Pollution

Sarret

Manceau

Cuny

et al. 1998

Environ. Sci. Technol.

179

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“…Compte tenu du fait que l'étude de la variabilité environnementale se base sur des analyses diachroniques dans lesquelles les indicateurs jouent un rôle de premier plan, les mollusques représentent des outils-clés dans l'évaluation des transformations côtières. En effet, le suivi de certaines espèces biologiques est un outil important pour évaluer les effets des activités humaines au sein d'un écosystème (Lange & Lambert 1995).…”

Section: Distribution Et Abondance De Megguunclassified

Savoirs naturalistes et stratégies de collecte de Geloina erosa, Geloina expansa et Polymesoda bengalensis dans la mangrove de l’île de Siberut (Indonésie)

Burgos¹

2016

ethnoecologie

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“…Consequently, there is increasing interest in the use of marine macrophytes because they grow in most coastal and estuarine systems (see . These rooted vascular plants interact with the chemical properties of the water column and surface sediment environments within site-specific and basin-wide locations (Brix, 1997;Brix et al, 1983;den Hartog, 1970;Lange and Lambert, 1994; Rainbow and…”

Section: Introductionmentioning

confidence: 99%