Chemistry of waters from Furnas volcano, São Miguel, Azores: fluxes of volcanic carbon dioxide and leached material

Cruz, J. Virgílio; Coutinho, Rui; Carvalho, Rejane Andrade de; Öskarsson, N.; Gíslason, Sigurður R.

doi:10.1016/s0377-0273(99)00073-6

Cited by 83 publications

(40 citation statements)

References 14 publications

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“…Geothermal biotopes are reducing environments with certain unique features, mainly characterised by elevated soil, water, and atmospheric elemental composition, together with constant diffuse degassing and high temperatures (Cruz et al, 1999;Viveiros et al, 2008;Viveiros et al, 2009). Volcanic gases typically comprise water vapour, carbon dioxide, sulphur dioxide, hydrogen sulphide, and hydrogen chloride with lesser amounts of hydrogen fluoride (Ferreira and Oskarsson, 1999).…”

Section: Introductionmentioning

confidence: 99%

Morphometry of the epidermis of an invasive megascoelecid earthworm (Amynthas gracilis, Kinberg 1867) inhabiting actively volcanic soils in the Azores archipelago

Cunha¹,

Campos²,

Montiel³

et al. 2011

Ecotoxicology and Environmental Safety

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a b s t r a c tFor the first time, the structure, dimensions, and composition of the epidermis of an invasive earthworm species that has successfully colonized hostile conditions in actively volcanic soil on São Miguel (Azores) have been measured. Metal concentrations in actively volcanic (Furnas) and volcanically inactive (Fajã) soils were similar; however, Furnas soil was characterised by elevated temperature (10 1C differential), relative hypoxia, extremely high CO 2 tension, and accompanying acidity. The epidermis of earthworm's resident at Fajã was approximately twice the thickness of the epidermis of conspecifics resident in Furnas soil. Reference worms transferred to Furnas soil for 14 days experienced an epidermal thinning of approximately 51%. In comparison, when Furnas earthworms were transferred to mesocosms at the relatively benign Fajã site, their epidermal thickness increased by approximately 21% over 14 days. Earthworms resident in Furnas soil had higher goblet cell counts than the residents of volcanically inactive soil on a neighbouring island (S. Maria). Transferring worms from S. Maria to mesocosms at Furnas induced a significant increase in goblet cell counts. Clearly, the active volcanic environment at Furnas poses a multifactorial stress challenge to the epigeic A. gracilis colonizer.

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Section: Introductionmentioning

confidence: 99%

Morphometry of the epidermis of an invasive megascoelecid earthworm (Amynthas gracilis, Kinberg 1867) inhabiting actively volcanic soils in the Azores archipelago

Cunha¹,

Campos²,

Montiel³

et al. 2011

Ecotoxicology and Environmental Safety

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“…The heat source, especially for deeper levels of the field, could be a regional heat anomaly [Silveira et al, 2006;Ritsema and Allen, 2003]. At Furnas, the heat source is probably the plutonic remnants of the most recent volcanism below the center of the caldera, although there are no clear signs of direct magmatic contribution in the discharge composition [Cruz et al, 1999].…”

Section: Introductionmentioning

confidence: 99%

Seismic tomography of Central São Miguel, Azores

Zandomeneghi

Almendros

Ibáñez

et al. 2008

Physics of the Earth and Planetary Interiors

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“…An example of natural input is volcanic activity, which can occur through lava emissions, degassing soils, and hydrothermal sources. Volcanic rocks and gases are responsible for the presence of metals such as As, Hg, Pb, Al, and Zn in soils of volcanic origin (Ferreira and Oskarsson, 1999;Kelepertsis et al, 2001), since diffusion of acidic volcanic gases through water permeable rocks contributes to the hydrological material transfer in volcanic strata (Cruz et al, 1999). Due to the high fertility of volcanic soils, volcanic regions are typically densely inhabited, and that can make them important scenarios for the study of the effects of high levels of metals in soils.…”

Section: Introductionmentioning

confidence: 99%

Bioavailability and cellular effects of metals on Lumbricus terrestris inhabiting volcanic soils

Amaral

Soto

Cunha

et al. 2006

Environmental Pollution

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In earthworms, differences in the chloragogenous tissue morphometry may be related to the bioavailability of metals in soils. AbstractWhether the radial thickness (RT) of the chloragogenous tissue and intestinal epithelium of earthworms (Lumbricus terrestris) reflects the bioavailability of metals in soils was investigated in two areas, one with active volcanism (Furnas) and another with no volcanic activity since 3 million years ago (Santa Maria), in the Azores. Metal contents in soil samples and earthworms from the two areas were analyzed. Autometallography and measurements of the RT were performed in the chloragogenous tissue and intestinal epithelium. Earthworms from the active volcanic area demonstrated lower RT of chloragogenous tissue and intestinal epithelium as well as higher levels of bioavailable metals, especially Zn and Cd. Comparison of bioavailable metal contents between both areas suggests a higher risk for uptake of potentially toxic metals in the active volcanic area than in the non-active volcanic area, which is reflected by the lower RT of the chloragogenous tissue and intestinal epithelium in the former.

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Chemistry of waters from Furnas volcano, São Miguel, Azores: fluxes of volcanic carbon dioxide and leached material

Cited by 83 publications

References 14 publications

Morphometry of the epidermis of an invasive megascoelecid earthworm (Amynthas gracilis, Kinberg 1867) inhabiting actively volcanic soils in the Azores archipelago

Morphometry of the epidermis of an invasive megascoelecid earthworm (Amynthas gracilis, Kinberg 1867) inhabiting actively volcanic soils in the Azores archipelago

Seismic tomography of Central São Miguel, Azores

Bioavailability and cellular effects of metals on Lumbricus terrestris inhabiting volcanic soils

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