Quantitative estimates of the meiofauna from the deep sea off North Carolina, USA

Coull, Bruce C.; Ellison, Robert L.; Fleeger, John W.; Higgins, Robert P.; Hope, Wayne; Hummon, William D.; Rieger, Reinhard M.; Sterrer, Wolfgang; Thiel, Hjalmar; Tietjen, John H.

doi:10.1007/bf00390997

Cited by 89 publications

(29 citation statements)

References 4 publications

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“…Due to their small size, enormous abundances, and high diversity (Coull et al, 1977), species identification of harpacticoid copepods is very difficult and time-consuming. Nonetheless, assessing species compositions for certain areas in ecological studies (e.g., Gollner et al, 2010;George et al, 2014;Plum et al, 2015;Schmidt and Martínez Arbizu, 2015) is very important and identifications are still mostly carried out by morphology only.…”

Section: Introductionmentioning

confidence: 99%

Effects of Sample Fixation on Specimen Identification in Biodiversity Assemblies Based on Proteomic Data (MALDI-TOF)

Rossel

Arbizu

2018

Front. Mar. Sci.

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Recently, MALDI-TOF mass spectrometry has been used to reliably identify taxonomically difficult harpacticoid copepods from sediment samples. In agreement with former studies, a negative impact of short storage periods was stated. Other studies reported inferior mass spectra quality from samples fixated in varying ethanol concentrations. Therefore, sediment samples from a mudflat sampling site in the North Sea were stored under different temperature conditions to explore possible storage effects. Samples were fixated with either 70 or 100% ethanol and specimens were measured using MALDI-TOF mass spectrometry after 1, 2, 3, 5, 7, and 12 weeks. The changes in number of peaks per species and the ability to identify specimens based on mass spectra were analyzed quality measurements. We show that storage temperature had a major impact on data quality, as for some species a loss of up to 50% of mass peaks and an increase of failed measurements to over 70% was observed. However, the effect of different ethanol concentrations on data quality was negligible. Concluding from these results, storage of metazoan samples in general and, particularly, of sediment samples at low temperatures of around −25 • C is recommended to receive high-quality mass spectra for specimen identification.

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Section: Introductionmentioning

confidence: 99%

Effects of Sample Fixation on Specimen Identification in Biodiversity Assemblies Based on Proteomic Data (MALDI-TOF)

Rossel

Arbizu

2018

Front. Mar. Sci.

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“…In deep-sea environments, they commonly represent more than 50% of the total biomass (Gooday et al, 1992). Thanks to their extraordinary potential of adaptation, benthic foraminifera are able to survive and proliferate in a wide range of marine environments, including extreme ecosystems, such as oligotrophic abyssal plains (Tietjen, 1971;Coull et al, 1977) or hydrothermal vents (Sen Gupta and Aharon, 1994). Because of their potentially important role in deep ocean environments, they are at present studied intensively for a better understanding of their role in the benthic ecosystem and for a more precise definition of their contribution to the recycling of organic matter at the ocean floor.…”

Section: Introductionmentioning

confidence: 99%

Live benthic foraminiferal faunas from the Bay of Biscay: faunal density, composition, and microhabitats

Fontanier

Jorissen

Licari

et al. 2002

Deep Sea Research Part I: Oceanographic Research Papers

463

280

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In the meso-oligotrophic Bay of Biscay, a diminishing downward organic matter flux with depth is accompanied by an important decrease of the live foraminiferal density. Although bottom water oxygenation is not directly influenced by organic matter input, the oxygenation of interstitial waters and the primary redox fronts do change in response to variations of the organic matter flux. The occurrence of deep and intermediate infaunal taxa can be linked to fundamental redox fronts and putative associated bacterial consortia. Our data are in agreement with the TROXmodel, which explains the benthic foraminiferal microhabitat as a function of organic flux and benthic ecosystem oxygenation. Both the depth of the principle redox fronts and the microhabitat of deep infaunal species show important increases with depth. At the deepest oligotrophic stations, deep infaunal faunas become relatively poor. Therefore, the exported flux of organic matter appears to be the main parameter controlling the composition and the vertical distribution of benthic foraminiferal faunas below the sediment-water interface. The oxygenation of pore waters plays only a minor role. A species-level adaptation of the TROX-model is presented for the Bay of Biscay. r

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“…Although studies have begun to describe the effects of such CO 2 disposal on deep-sea fauna including fish (Tamburri et al, 2000), crustaceans (Barry et al, submitted), echinoderms (Barry et al, submitted), and metazoan meiofauna (e.g., Carman et al, 2004;Watanabe et al, 2006;Fleeger et al, 2006;Thistle et al, 2007), little is known about the effect of such activities on protista. Because protists comprise a substantial portion of the deep-sea benthos (e.g., Alongi & Pinchon, 1988;Coull et al, 1977;Snider et al, 1984;Gooday et al, 2000;Smith et al, 2002), it is important to establish the effects of bathyal CO 2 release on these single-celled eukaryotes. One study that surveyed the effects of CO 2 release on deep-sea meiobenthos observed that 4.5 weeks after seafloor CO 2 injection many meiofaunal groups (i.e., nematode metazoans and flagellate and amoebae protists) experienced elevated mortality compared to sites removed from CO 2 manipulation .…”

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confidence: 99%

Impact of intentionally injected carbon dioxide hydrate on deep‐sea benthic foraminiferal survival

Bernhard

Barry

Buck

et al. 2009

Global Change Biology

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Sequestration of carbon dioxide (CO 2 ) in the ocean is being considered as a feasible mechanism to mitigate the alarming rate in its atmospheric rise. Little is known, however, about how the resulting hypercapnia and ocean acidification may affect marine fauna. In an effort to understand better the protistan reaction to such an environmental perturbation, the survivorship of benthic foraminifera, which is a prevalent group of protists, was studied in response to deepsea CO 2 release. The survival response of calcareous, agglutinated, and thecate foraminifera was determined in two experiments at ~3.1 and 3.3 km water depth in Monterey Bay (California, USA). Approximately five weeks after initial seafloor CO 2 release, in situ incubations of the live-dead indicator CellTracker Green were executed within seafloor-emplaced pushcores.Experimental treatments included direct exposure to CO 2 hydrate, two levels of lesser exposure adjacent to CO 2 hydrate, and controls, which were far removed from the CO 2 hydrate release.Results indicate that survivorship rates of agglutinated and thecate foraminifera were not significantly impacted by direct exposure but the survivorship of calcareous foraminifera was significantly lower in direct exposure treatments compared to controls. Observations suggest that, if large scale CO 2 sequestration is enacted on the deep-sea floor, survival of two major groups of this prevalent protistan taxon will likely not be severely impacted, while calcareous foraminifera will face considerable challenges to maintain their benthic populations in areas directly exposed to CO 2 hydrate.2

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Quantitative estimates of the meiofauna from the deep sea off North Carolina, USA

Cited by 89 publications

References 4 publications

Effects of Sample Fixation on Specimen Identification in Biodiversity Assemblies Based on Proteomic Data (MALDI-TOF)

Effects of Sample Fixation on Specimen Identification in Biodiversity Assemblies Based on Proteomic Data (MALDI-TOF)

Live benthic foraminiferal faunas from the Bay of Biscay: faunal density, composition, and microhabitats

Impact of intentionally injected carbon dioxide hydrate on deep‐sea benthic foraminiferal survival

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