Migratory responses of deep-sea benthic foraminifera to variable oxygen conditions: laboratory investigations

Geslin, Emmanuelle; Heinz, Petra; Jorissen, Frans; Hemleben, C.

doi:10.1016/j.marmicro.2004.05.010

Cited by 123 publications

(73 citation statements)

References 43 publications

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“…The species U. mediterranea is a shallow infaunal taxa with highest abundances in well-oxygenated areas in environments under relatively high phytodetritus input (CPE >2.6 µg cm -3 in the surface and >1 µg cm -3 within the sediment). These results are in agreement with the observations made by other authors (Fontanier et al, 2008;Geslin et al, 2004;Jorissen et al, 2007;Koho et al, 2008;Schmiedl et al, 2000). The species B. nodosaria is an intermediate infaunal taxa with the highest abundances towards the surface and a second subsurface maximum around 2-3 cm sediment depth.…”

Section: Benthic Foraminifera From Mesotrophic Environmentssupporting

confidence: 93%

Living deep-sea benthic foraminifera from the Cap de Creus Canyon (western Mediterranean): Faunal–geochemical interactions

Contreras-Rosales

Koho

Duijnstee

et al. 2012

Deep Sea Research Part I: Oceanographic Research Papers

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Section: Benthic Foraminifera From Mesotrophic Environmentssupporting

confidence: 93%

Living deep-sea benthic foraminifera from the Cap de Creus Canyon (western Mediterranean): Faunal–geochemical interactions

Contreras-Rosales

Koho

Duijnstee

et al. 2012

Deep Sea Research Part I: Oceanographic Research Papers

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“…Whilst we are not able to conclusively state that the species studied here calcify at the sediment-seawater interface, this hypothesis is consistent with (i) the presence of "live" individuals of all the most abundant taxa in the upper 1-2 cm of sediment in this study (and other studies), (ii) the documented ability of foraminifera to migrate through the sediment column (e.g. Linke and Lutze, 1993;Geslin et al, 2004), (iii) the absence of a strong living depth preference in this study (and other studies), and (iv) the sediment-seawater interface being the most energetically favourable location for calcification (greatest C org and [CO 2− 3 ] availability). We propose that epifaunal taxa live and calcify at the sediment-seawater interface throughout a wide range of organic carbon availability scenarios (oligotrophic to eutrophic).…”

Section: Discussionsupporting

confidence: 45%

“…Foraminifera are known to be capable of migrating throughout the sediment column (e.g. Linke and Lutze, 1993;Geslin et al, 2004) and the occurrence of infaunal species at these shallow depths within the sediment demonstrates their ability to migrate to the sediment-seawater interface. Weldeab et al (2016) have recorded the presence of a steep ] gradient between bottom water and pore water and also within the sediment column.…”

Section: Foraminiferal Calcification Strategiesmentioning

confidence: 99%

“Live” (stained) benthic foraminiferal living depths, stable isotopes, and taxonomy offshore South Georgia, Southern Ocean: implications for calcification depths

Dejardin

Kender

Allen

et al. 2018

J. Micropalaeontol.

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Abstract. It is widely held that benthic foraminifera exhibit species-specific calcification depth preferences, with their tests recording sediment pore water chemistry at that depth (i.e. stable isotope and trace metal compositions). This assumed depth-habitat-specific pore water chemistry relationship has been used to reconstruct various palaeoenvironmental parameters, such as bottom water oxygenation. However, many deepwater foraminiferal studies show wide intra-species variation in sediment living depth but relatively narrow intra-species variation in stable isotope composition. To investigate this depth-habitat-stable-isotope relationship on the shelf, we analysed depth distribution and stable isotopes of "living" (Rose Bengal stained) benthic foraminifera from two box cores collected on the South Georgia shelf (ranging from 250 to 300 m water depth). We provide a comprehensive taxonomic analysis of the benthic fauna, comprising 79 taxonomic groupings. The fauna shows close affinities with shelf assemblages from around Antarctica. We find "live" specimens of a number of calcareous species from a range of depths in the sediment column. Stable isotope ratios (δ 13 C and δ 18 O) were measured on stained specimens of three species, Astrononion echolsi, Cassidulinoides porrectus, and Buccella sp. 1, at 1 cm depth intervals within the downcore sediment sequences. In agreement with studies in deep-water settings, we find no significant intra-species variability in either δ 13 C foram or δ 18 O foram with sediment living depth on the South Georgia shelf. Our findings add to the growing evidence that infaunal benthic foraminiferal species calcify at a fixed depth. Given the wide range of depths at which we find "living", "infaunal" species, we speculate that they may actually calcify predominantly at the sediment-seawater interface, where carbonate ion concentration and organic carbon availability is at a maximum.

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“…The migration behaviour between redox zones is also commonly observed among foraminifera (e.g. Geslin et al 2004, Pucci et al 2009, and thus it is very likely that this behaviour is closely linked to the nitrate uptake, or nitrate refuelling, and respiration of stored nitrate. A major difference between foraminifera and nitratestoring sulphur bacteria, however, is the end product of nitrate respiration.…”

Section: Nitrate Respiration Strategies: Prokaryotes Versus Eukaryotesmentioning

confidence: 78%

Survival and life strategy of the foraminiferan Globobulimina turgida through nitrate storage and denitrification

Piña-Ochoa¹,

Koho²,

Geslin³

et al. 2010

Mar. Ecol. Prog. Ser.

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In a laboratory experiment, we examined the prolonged survival and behaviour of the benthic foraminiferan Globobulimina turgida under 3 simulated natural conditions: oxygenated with added nitrate, anoxic with added nitrate, and anoxic. The survival rates, adenosine triphosphate (ATP) reserve and intracellular nitrate pool of G. turgida were measured periodically under these conditions. Furthermore, to evaluate the efficiency and energy yield of the respiration system, denitrification rates of individual specimens were quantified using the acetylene inhibition and N 2 O microsensor technique at the start of the experiment. Our results demonstrate that the long-term (56 d) survival rate (64%) and ATP concentrations of G. turgida were not significantly different in oxygenated and anoxic, nitrate-containing conditions (Mann-Whitney test, p > 0.05). Thus, G. turgida can survive prolonged anoxia (3 mo) as long as nitrate is available to sustain its respiration. However, it remains unsure whether growth or reproduction can take place under anoxia. Short-term (21 to 35 d) survival rates were lower in nitrate-free, anoxic conditions (22% recovered alive compared to 62 to 82% in nitrate-oxic or nitrate-anoxic conditions), but foraminifera were observed to survive up to 56 d if respiring from their intra-cellular nitrate pool only. The foraminiferal nitrate pool appears very dynamic, as wide ranges of concentrations were measured in living specimens (0 to 463 mM ind.-1 ). We postulate that the scatter in the nitrate pool measurements highlights the ability of the foraminifera to actively collect and respire on nitrate, depending on individuals' history of exposure to oxygen and nitrate.

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Migratory responses of deep-sea benthic foraminifera to variable oxygen conditions: laboratory investigations

Cited by 123 publications

References 43 publications

Living deep-sea benthic foraminifera from the Cap de Creus Canyon (western Mediterranean): Faunal–geochemical interactions

Living deep-sea benthic foraminifera from the Cap de Creus Canyon (western Mediterranean): Faunal–geochemical interactions

“Live” (stained) benthic foraminiferal living depths, stable isotopes, and taxonomy offshore South Georgia, Southern Ocean: implications for calcification depths

Survival and life strategy of the foraminiferan Globobulimina turgida through nitrate storage and denitrification

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