The influence of seasonal processes on geochemical profiles and foraminiferal assemblages on the outer shelf of the Bay of Biscay

Langezaal, A.M.; Jorissen, Frans; Braun, Barbara; Chaillou, Gwénaëlle; Fontanier, Christophe; Anschutz, Pierre; Zwaan, G.J. van der

doi:10.1016/j.csr.2006.05.005

Cited by 69 publications

(56 citation statements)

References 54 publications

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“…spring bloom) (Langezaal et al, 2006;Duchemin et al, 2007). B. marginata represents 25% of the living fauna at our 725-m-deep station.…”

Section: An Unusual Low-diversity Fauna At the 725-m-deep Stationmentioning

confidence: 90%

“…In order to compare our observations with previous foraminiferal studies (e.g. Fontanier et al, 2003Fontanier et al, , 2006Hess et al, 2005;Langezaal et al, 2006;Duchemin et al, 2007), sediment samples were sieved through a 150-lm mesh screen. The sieve residues were stored in 95% ethanol.…”

Section: Benthic Foraminiferal Analysismentioning

confidence: 95%

“…This procedure is really difficult to achieve in practise. To overcome those problems, the temporal dynamics of living (stained) foraminiferal faunas in our study area is constrained by several studies in the Bay of Biscay (NE Atlantic) at 150-m, 550-m-, 640-m-and 1000-m-deep stations (Fontanier et al, 2003Hess et al, 2005;Langezaal et al, 2006;Duchemin et al, 2007) and in the Gulf of Lions (NW Mediterranean Sea) . These works deal with foraminiferal faunas living in a wide range of natural environmental settings (shelf, open-slope, active and passive canyons), and bring useful pieces of indication concerning what we could expect in terms of temporal changes of foraminiferal faunas in the Cassidaigne Canyon.…”

Section: Some Precautions For This Impact Study Based On Benthic Foramentioning

confidence: 99%

“…However, when considering a $150-m-deep station from the Bay of Biscay studied by Langezaal et al (2006) and Duchemin et al (2007), G. umbonata represent more than 15% of the living faunas during eutrophic period (i.e. spring bloom) (Langezaal et al, 2006;Duchemin et al, 2007).…”

Section: An Unusual Low-diversity Fauna At the 725-m-deep Stationmentioning

confidence: 99%

“…It is commonly documented as an opportunistic species living in outer-shelf and upper-slope environments (e.g. Fontanier et al, 2003;Hess et al, 2005;Langezaal et al, 2006;Duchemin et al, 2007;Goineau et al, 2011). In the Cap-Breton Canyon (Bay of Biscay), it is characteristic of both early and advanced stages of recolonization, with other dominant species such as Bolivina subaenariensis and Hyalinea balthica (Hess et al, 2005;Hess and Jorissen, 2009).…”

Section: An Unusual Low-diversity Fauna At the 725-m-deep Stationmentioning

confidence: 99%

See 4 more Smart Citations

Deep-sea foraminifera from the Cassidaigne Canyon (NW Mediterranean): Assessing the environmental impact of bauxite red mud disposal

Fontanier

Fabri

Buscail

et al. 2012

Marine Pollution Bulletin

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“…spring bloom) (Langezaal et al, 2006;Duchemin et al, 2007). B. marginata represents 25% of the living fauna at our 725-m-deep station.…”

Section: An Unusual Low-diversity Fauna At the 725-m-deep Stationmentioning

confidence: 90%

Section: Benthic Foraminiferal Analysismentioning

confidence: 95%

Section: Some Precautions For This Impact Study Based On Benthic Foramentioning

confidence: 99%

Section: An Unusual Low-diversity Fauna At the 725-m-deep Stationmentioning

confidence: 99%

Section: An Unusual Low-diversity Fauna At the 725-m-deep Stationmentioning

confidence: 99%

See 3 more Smart Citations

Deep-sea foraminifera from the Cassidaigne Canyon (NW Mediterranean): Assessing the environmental impact of bauxite red mud disposal

Fontanier

Fabri

Buscail

et al. 2012

Marine Pollution Bulletin

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Benthic Foraminifera: Inhabitants of Low-Oxygen Environments

Koho

Piña-Ochoa

2011

Cellular Origin, Life in Extreme Habitats and Astrobiology

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Deep-sea benthic foraminifera in an area around the Cassidaigne Canyon (NW Mediterranean) affected by bauxite discharges

et al. 2014

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During an environmental survey, living (stained) benthic foraminiferal faunas were investigated at 14 stations within the Cassidaigne Canyon (NW Mediterranean Sea) and the surrounding area. For many decades, industrial bauxite residues (namely red mud) have drained into this canyon via a submarine pipe. Stations investigated in this paper are located between water depths of 288 and 2,432 m from the shelf break to the deeper basin and at a distance ranging between~5 and 70 km from the pipe outlet. At almost every site, surface sediment is characterized by red mud deposits and their geochemical imprints. Our ecological observations show that foraminiferal standing stocks and simple diversity (S) decrease across the margin in response to the decreasing food input to the seafloor with increasing water depth. The foraminiferal composition echoes the overall mesooligotrophic patterns of our study area. The contribution of opportunistic and stress-tolerant species, commonly identified as recolonizers of freshly disturbed areas, is minor at the 14 stations. This clearly shows that red mud dispersal in the Cassidaigne Canyon and the surrounding area has no major ecological impact on foraminiferal diversity.

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The influence of seasonal processes on geochemical profiles and foraminiferal assemblages on the outer shelf of the Bay of Biscay

Cited by 69 publications

References 54 publications

Deep-sea foraminifera from the Cassidaigne Canyon (NW Mediterranean): Assessing the environmental impact of bauxite red mud disposal

Deep-sea foraminifera from the Cassidaigne Canyon (NW Mediterranean): Assessing the environmental impact of bauxite red mud disposal

Benthic Foraminifera: Inhabitants of Low-Oxygen Environments

Deep-sea benthic foraminifera in an area around the Cassidaigne Canyon (NW Mediterranean) affected by bauxite discharges

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