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BG | Volume 15, issue 19
Biogeosciences, 15, 5745–5759, 2018
https://doi.org/10.5194/bg-15-5745-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-15-5745-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 15, 5745–5759, 2018
https://doi.org/10.5194/bg-15-5745-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-15-5745-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article 01 Oct 2018
Research article | 01 Oct 2018
Effects of light and temperature on Mg uptake, growth, and calcification in the proxy climate archive Clathromorphum compactum
Siobhan Williams et al.Related authors
No articles found.
Merinda C. Nash and Walter Adey
Biogeosciences, 15, 781–795, https://doi.org/10.5194/bg-15-781-2018, https://doi.org/10.5194/bg-15-781-2018, 2018
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Past seawater temperatures can be reconstructed using magnesium / calcium ratios of biogenic carbonates. As temperature increases, so does magnesium. Here we show that for these Arctic/subarctic coralline algae, anatomy is the first control on Mg / Ca, not temperature. When using coralline algae for temperature reconstruction, it is first necessary to check for anatomical influences on Mg / Ca.
Merinda C. Nash, Sophie Martin, and Jean-Pierre Gattuso
Biogeosciences, 13, 5937–5945, https://doi.org/10.5194/bg-13-5937-2016, https://doi.org/10.5194/bg-13-5937-2016, 2016
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We carried out a 1-year experiment on coralline algae to test how higher CO2 and temperature might change the mineral composition of the algal skeleton. We expected there to be a decline in magnesium with CO2 and an increase with temperature. We found that CO2 did not change the mineral composition, but higher temperature increased the amount of magnesium.
B. A. Hook, J. Halfar, Z. Gedalof, J. Bollmann, and D. J. Schulze
Biogeosciences, 12, 5899–5914, https://doi.org/10.5194/bg-12-5899-2015, https://doi.org/10.5194/bg-12-5899-2015, 2015
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The recent discovery of mummified wood (non-petrified) within kimberlite diamond mines in Northwest Territories, Canada, has prompted a paleoclimatic investigation of the time in which the trees grew - the earliest Eocene (ca. 53.3 Ma). Multiple proxy records derived from these samples suggest that during greenhouse climates of the Eocene, subarctic Canada was characterized by high temperatures (+16 C above modern), and multidecadal variability in cloudiness and temperature on 20-30 year cycles.
M. C. Nash, S. Uthicke, A. P. Negri, and N. E. Cantin
Biogeosciences, 12, 5247–5260, https://doi.org/10.5194/bg-12-5247-2015, https://doi.org/10.5194/bg-12-5247-2015, 2015
Related subject area
Paleobiogeoscience: Proxy use, Development & Validation
Organic-carbon-rich sediments: benthic foraminifera as bio-indicators of depositional environments
Strong correspondence between nitrogen isotope composition of foliage and chlorin across a rainfall gradient: implications for paleo-reconstruction of the nitrogen cycle
Environmental and biological controls on Na∕Ca ratios in scleractinian cold-water corals
Depth habitat of the planktonic foraminifera Neogloboquadrina pachyderma in the northern high latitudes explained by sea-ice and chlorophyll concentrations
Temporal variability in foraminiferal morphology and geochemistry at the West Antarctic Peninsula: a sediment trap study
Seasonality of archaeal lipid flux and GDGT-based thermometry in sinking particles of high-latitude oceans: Fram Strait (79° N) and Antarctic Polar Front (50° S)
Long-chain diols in settling particles in tropical oceans: insights into sources, seasonality and proxies
Multi-trace-element sea surface temperature coral reconstruction for the southern Mozambique Channel reveals teleconnections with the tropical Atlantic
Oxygen isotope composition of the final chamber of planktic foraminifera provides evidence of vertical migration and depth-integrated growth
Mg ∕ Ca and δ18O in living planktic foraminifers from the Caribbean, Gulf of Mexico and Florida Straits
Manganese incorporation in living (stained) benthic foraminiferal shells: a bathymetric and in-sediment study in the Gulf of Lions (NW Mediterranean)
A systematic look at chromium isotopes in modern shells – implications for paleo-environmental reconstructions
Reviews and syntheses: Revisiting the boron systematics of aragonite and their application to coral calcification
Physico-chemical and biological factors influencing dinoflagellate cyst production in the Cariaco Basin
Effects of alkalinity and salinity at low and high light intensity on hydrogen isotope fractionation of long-chain alkenones produced by Emiliania huxleyi
Interplay of community dynamics, temperature, and productivity on the hydrogen isotope signatures of lipid biomarkers
Benthic foraminiferal Mn / Ca ratios reflect microhabitat preferences
The effects of environment on Arctica islandica shell formation and architecture
Diatoms as a paleoproductivity proxy in the NW Iberian coastal upwelling system (NE Atlantic)
Factors controlling the depth habitat of planktonic foraminifera in the subtropical eastern North Atlantic
The effect of shell secretion rate on Mg / Ca and Sr / Ca ratios in biogenic calcite as observed in a belemnite rostrum
Carbonate “clumped” isotope signatures in aragonitic scleractinian and calcitic gorgonian deep-sea corals
Examining the provenance of branched GDGTs in the Tagus River drainage basin and its outflow into the Atlantic Ocean over the Holocene to determine their usefulness for paleoclimate applications
Mussel shells of Mytilus edulis as bioarchives of the distribution of rare earth elements and yttrium in seawater and the potential impact of pH and temperature on their partitioning behavior
Fossil invertebrates records in cave sediments and paleoenvironmental assessments – a study of four cave sites from Romanian Carpathians
Testing the D / H ratio of alkenones and palmitic acid as salinity proxies in the Amazon Plume
Technical Note: Towards resolving in situ, centimeter-scale location and timing of biomineralization in calcareous meiobenthos – the calcein–osmotic pump method
A comparison of benthic foraminiferal Mn / Ca and sedimentary Mn / Al as proxies of relative bottom-water oxygenation in the low-latitude NE Atlantic upwelling system
The stable isotopic composition of Daphnia ephippia reflects changes in δ13C and δ18O values of food and water
The contribution of tephra constituents during biogenic silica determination: implications for soil and palaeoecological studies
Seasonal lake surface water temperature trends reflected by heterocyst glycolipid-based molecular thermometers
Technical Note: Silica stable isotopes and silicification in a carnivorous sponge Asbestopluma sp.
Environmental controls on the boron and strontium isotopic composition of aragonite shell material of cultured Arctica islandica
Global analysis of seasonality in the shell flux of extant planktonic Foraminifera
Boron incorporation in the foraminifer Amphistegina lessonii under a decoupled carbonate chemistry
Oxygen and carbon isotope composition of modern planktic foraminifera and near-surface waters in the Fram Strait (Arctic Ocean) – a case study
Upper ocean mixing controls the seasonality of planktonic foraminifer fluxes and associated strength of the carbonate pump in the oligotrophic North Atlantic
I/Ca ratios in benthic foraminifera from the Peruvian oxygen minimum zone: analytical methodology and evaluation as a proxy for redox conditions
Dependence of the cyclization of branched tetraethers on soil moisture in alkaline soils from arid–subhumid China: implications for palaeorainfall reconstructions on the Chinese Loess Plateau
Provenance of tetraether membrane lipids in a large temperate lake (Loch Lomond, UK): implications for glycerol dialkyl glycerol tetraether (GDGT)-based palaeothermometry
Evidence for benthic–pelagic food web coupling and carbon export from California margin bamboo coral archives
Influence of water availability in the distributions of branched glycerol dialkyl glycerol tetraether in soils of the Iberian Peninsula
The influence of seawater pH on U / Ca ratios in the scleractinian cold-water coral Lophelia pertusa
Technical Note: Weight approximation of coccoliths using a circular polarizer and interference colour derived retardation estimates – (The CPR Method)
Mg/Ca and Mn/Ca ratios in benthic foraminifera: the potential to reconstruct past variations in temperature and hypoxia in shelf regions
The influence of temperature and seawater carbonate saturation state on 13C–18O bond ordering in bivalve mollusks
Spatial distribution of benthic foraminiferal stable isotopes and dinocyst assemblages in surface sediments of the Trondheimsfjord, central Norway
Towards community-driven paleogeographic reconstructions: integrating open-access paleogeographic and paleobiology data with plate tectonics
Oxygen isotope ratios in the shell of Mytilus edulis: archives of glacier meltwater in Greenland?
Encrustation and trace element composition of Neogloboquadrina dutertrei assessed from single chamber analyses – implications for paleotemperature estimates
Elena Lo Giudice Cappelli, Jessica Louise Clarke, Craig Smeaton, Keith Davidson, and William Edward Newns Austin
Biogeosciences, 16, 4183–4199, https://doi.org/10.5194/bg-16-4183-2019, https://doi.org/10.5194/bg-16-4183-2019, 2019
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Fjords are known sinks of organic carbon (OC); however, little is known about the long-term fate of the OC stored in these sediments. The reason for this knowledge gap is the post-depositional degradation of OC. This study uses benthic foraminifera (microorganisms with calcite shells) to discriminate between post-depositional OC degradation and actual OC burial and accumulation in fjordic sediments, as foraminifera would only preserve the latter information in their assemblage composition.
Sara K. E. Goulden, Naohiko Ohkouchi, Katherine H. Freeman, Yoshito Chikaraishi, Nanako O. Ogawa, Hisami Suga, Oliver Chadwick, and Benjamin Z. Houlton
Biogeosciences, 16, 3869–3882, https://doi.org/10.5194/bg-16-3869-2019, https://doi.org/10.5194/bg-16-3869-2019, 2019
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We investigate whether soil organic compounds preserve information about nitrogen availability to plants. We isolate chlorophyll degradation products in leaves, litter, and soil and explore possible species and climate effects on preservation and interpretation. We find that compound-specific nitrogen isotope measurements in soil have potential as a new tool to reconstruct changes in nitrogen cycling on a landscape over time, avoiding issues that have limited other proxies.
Nicolai Schleinkofer, Jacek Raddatz, André Freiwald, David Evans, Lydia Beuck, Andres Rüggeberg, and Volker Liebetrau
Biogeosciences, 16, 3565–3582, https://doi.org/10.5194/bg-16-3565-2019, https://doi.org/10.5194/bg-16-3565-2019, 2019
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In this study we tried to correlate Na / Ca ratios from cold-water corals with environmental parameters such as salinity, temperature and pH. We do not observe a correlation between Na / Ca ratios and seawater salinity, but we do observe a strong correlation with temperature. Na / Ca data from warm-water corals (Porites spp.) and bivalves (Mytilus edulis) support this correlation, indicating that similar controls on the incorporation of sodium exist in these aragonitic organisms.
Mattia Greco, Lukas Jonkers, Kerstin Kretschmer, Jelle Bijma, and Michal Kucera
Biogeosciences, 16, 3425–3437, https://doi.org/10.5194/bg-16-3425-2019, https://doi.org/10.5194/bg-16-3425-2019, 2019
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To be able to interpret the paleoecological signal contained in N. pachyderma's shells, its habitat depth must be known. Our investigation on 104 density profiles of this species from the Arctic and North Atlantic shows that specimens reside closer to the surface when sea-ice and/or surface chlorophyll concentrations are high. This is in contrast with previous investigations that pointed at the position of the deep chlorophyll maximum as the main driver of N. pachyderma vertical distribution.
Anna Mikis, Katharine R. Hendry, Jennifer Pike, Daniela N. Schmidt, Kirsty M. Edgar, Victoria Peck, Frank J. C. Peeters, Melanie J. Leng, Michael P. Meredith, Chloe L. Todd, Sharon Stammerjohn, and Hugh Ducklow
Biogeosciences, 16, 3267–3282, https://doi.org/10.5194/bg-16-3267-2019, https://doi.org/10.5194/bg-16-3267-2019, 2019
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Antarctic marine calcifying organisms are threatened by regional climate change and ocean acidification. Future projections of regional carbonate production are challenging due to the lack of historical data combined with complex climate variability. We present a 6-year record of flux, morphology and geochemistry of an Antarctic planktonic foraminifera, which shows that their growth is most sensitive to sea ice dynamics and is linked with the El Niño–Southern Oscillation.
Eunmi Park, Jens Hefter, Gerhard Fischer, Morten Hvitfeldt Iversen, Simon Ramondenc, Eva-Maria Nöthig, and Gesine Mollenhauer
Biogeosciences, 16, 2247–2268, https://doi.org/10.5194/bg-16-2247-2019, https://doi.org/10.5194/bg-16-2247-2019, 2019
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We analyzed GDGT-based proxy temperatures in the polar oceans. In the eastern Fram Strait (79° N), the nutrient distribution may determine the depth habit of Thaumarchaeota and thus the proxy temperature. In the Antarctic Polar Front (50° S), the contribution of Euryarchaeota or the nonlinear correlation between the proxy values and temperatures may cause the warm biases of the proxy temperatures relative to SSTs.
Marijke W. de Bar, Jenny E. Ullgren, Robert C. Thunnell, Stuart G. Wakeham, Geert-Jan A. Brummer, Jan-Berend W. Stuut, Jaap S. Sinninghe Damsté, and Stefan Schouten
Biogeosciences, 16, 1705–1727, https://doi.org/10.5194/bg-16-1705-2019, https://doi.org/10.5194/bg-16-1705-2019, 2019
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We analyzed sediment traps from the Cariaco Basin, the tropical Atlantic and the Mozambique Channel to evaluate seasonal imprints in the concentrations and fluxes of long-chain diols (LDIs), in addition to the long-chain diol index proxy (sea surface temperature proxy) and the diol index (upwelling indicator). Despite significant degradation, LDI-derived temperatures were very similar for the sediment traps and seafloor sediments, and corresponded to annual mean sea surface temperatures.
Jens Zinke, Juan P. D'Olivo, Christoph J. Gey, Malcolm T. McCulloch, J. Henrich Bruggemann, Janice M. Lough, and Mireille M. M. Guillaume
Biogeosciences, 16, 695–712, https://doi.org/10.5194/bg-16-695-2019, https://doi.org/10.5194/bg-16-695-2019, 2019
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Here we report seasonally resolved sea surface temperature (SST) reconstructions for the southern Mozambique Channel in the SW Indian Ocean, a region located along the thermohaline ocean surface circulation route, based on multi-trace-element temperature proxy records preserved in two Porites sp. coral cores for the past 42 years. Particularly, we show the suitability of both separate and combined Sr / Ca and Li / Mg proxies for improved multielement SST reconstructions.
Hilde Pracht, Brett Metcalfe, and Frank J. C. Peeters
Biogeosciences, 16, 643–661, https://doi.org/10.5194/bg-16-643-2019, https://doi.org/10.5194/bg-16-643-2019, 2019
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In palaeoceanography the shells of single-celled foraminifera are routinely used as proxies to reconstruct the temperature, salinity and circulation of the ocean in the past. Traditionally a number of specimens were pooled for a single stable isotope measurement; however, technical advances now mean that a single shell or chamber of a shell can be measured individually. Three different hypotheses regarding foraminiferal biology and ecology were tested using this approach.
Anna Jentzen, Dirk Nürnberg, Ed C. Hathorne, and Joachim Schönfeld
Biogeosciences, 15, 7077–7095, https://doi.org/10.5194/bg-15-7077-2018, https://doi.org/10.5194/bg-15-7077-2018, 2018
Shauna Ní Fhlaithearta, Christophe Fontanier, Frans Jorissen, Aurélia Mouret, Adriana Dueñas-Bohórquez, Pierre Anschutz, Mattias B. Fricker, Detlef Günther, Gert J. de Lange, and Gert-Jan Reichart
Biogeosciences, 15, 6315–6328, https://doi.org/10.5194/bg-15-6315-2018, https://doi.org/10.5194/bg-15-6315-2018, 2018
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This study looks at how foraminifera interact with their geochemical environment in the seabed. We focus on the incorporation of the trace metal manganese (Mn), with the aim of developing a tool to reconstruct past pore water profiles. Manganese concentrations in foraminifera are investigated relative to their ecological preferences and geochemical environment. This study demonstrates that Mn in foraminiferal tests is a promising tool to reconstruct oxygen conditions in the seabed.
Robert Frei, Cora Paulukat, Sylvie Bruggmann, and Robert M. Klaebe
Biogeosciences, 15, 4905–4922, https://doi.org/10.5194/bg-15-4905-2018, https://doi.org/10.5194/bg-15-4905-2018, 2018
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The reconstruction of paleo-redox conditions of seawater has the potential to link to climatic changes on land and therefore to contribute to our understanding of past climate change. The redox-sensitive chromium isotope system is applied to marine calcifiers in order to characterize isotope offsets that result from vital processes during calcification processes and which can be eventually used in fossil equivalents to reconstruct past seawater compositions.
Thomas M. DeCarlo, Michael Holcomb, and Malcolm T. McCulloch
Biogeosciences, 15, 2819–2834, https://doi.org/10.5194/bg-15-2819-2018, https://doi.org/10.5194/bg-15-2819-2018, 2018
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Understanding the mechanisms of coral calcification is limited by the isolation of the calcifying environment. The boron systematics (B / Ca and δ11B) of aragonite have recently been developed as a proxy for the carbonate chemistry of the calcifying fluid, but a variety of approaches have been utilized. We assess the available experimental B / Ca partitioning data and present a computer code for deriving calcifying fluid carbonate chemistry from the boron systematics of coral skeletons.
Manuel Bringué, Robert C. Thunell, Vera Pospelova, James L. Pinckney, Oscar E. Romero, and Eric J. Tappa
Biogeosciences, 15, 2325–2348, https://doi.org/10.5194/bg-15-2325-2018, https://doi.org/10.5194/bg-15-2325-2018, 2018
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We document 2.5 yr of dinoflagellate cyst production in the Cariaco Basin using a sediment trap record. Each species' production pattern is interpreted in the context of the physico-chemical (e.g., temperature, nutrients) and biological (other planktonic groups) environment. Most species respond positively to upwelling, but seem to be negatively impacted by an El Niño event with a 1-year lag. This work helps understanding dinoflagellate ecology and interpreting fossil assemblages in sediments.
Gabriella M. Weiss, Eva Y. Pfannerstill, Stefan Schouten, Jaap S. Sinninghe Damsté, and Marcel T. J. van der Meer
Biogeosciences, 14, 5693–5704, https://doi.org/10.5194/bg-14-5693-2017, https://doi.org/10.5194/bg-14-5693-2017, 2017
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Algal-derived compounds allow us to make assumptions about environmental conditions in the past. In order to better understand how organisms record environmental conditions, we grew microscopic marine algae at different light intensities, salinities, and alkalinities in a temperature-controlled environment. We determined how these environmental parameters affected specific algal-derived compounds, especially their relative deuterium content, which seems to be mainly affected by salinity.
S. Nemiah Ladd, Nathalie Dubois, and Carsten J. Schubert
Biogeosciences, 14, 3979–3994, https://doi.org/10.5194/bg-14-3979-2017, https://doi.org/10.5194/bg-14-3979-2017, 2017
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Hydrogen isotopes of lipids provide valuable information about microbial activity, climate, and environmental stress. We show that heavy hydrogen in fatty acids declines from spring to summer in a nutrient-rich and a nutrient-poor lake and that the effect is nearly 3 times as big in the former. This effect is likely a combination of increased biomass from algae, warmer temperatures, and higher algal growth rates.
Karoliina A. Koho, Lennart J. de Nooijer, Christophe Fontanier, Takashi Toyofuku, Kazumasa Oguri, Hiroshi Kitazato, and Gert-Jan Reichart
Biogeosciences, 14, 3067–3082, https://doi.org/10.5194/bg-14-3067-2017, https://doi.org/10.5194/bg-14-3067-2017, 2017
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Here we report Mn / Ca ratios in living benthic foraminifera from the NE Japan margin. The results show that the Mn incorporation directly reflects the environment where the foraminifera calcify. Foraminifera that live deeper in sediment, under greater redox stress, generally incorporate more Mn into their carbonate skeletons. As such, foraminifera living close to the Mn reduction zone in sediment appear promising tools for paleoceanographic reconstructions of sedimentary redox conditions.
Stefania Milano, Gernot Nehrke, Alan D. Wanamaker Jr., Irene Ballesta-Artero, Thomas Brey, and Bernd R. Schöne
Biogeosciences, 14, 1577–1591, https://doi.org/10.5194/bg-14-1577-2017, https://doi.org/10.5194/bg-14-1577-2017, 2017
Diana Zúñiga, Celia Santos, María Froján, Emilia Salgueiro, Marta M. Rufino, Francisco De la Granda, Francisco G. Figueiras, Carmen G. Castro, and Fátima Abrantes
Biogeosciences, 14, 1165–1179, https://doi.org/10.5194/bg-14-1165-2017, https://doi.org/10.5194/bg-14-1165-2017, 2017
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Diatoms are one of the most important primary producers in highly productive coastal regions. Their silicified valves are susceptible to escape from the upper water column and be preserved in the sediment record, and thus are frequently used to reconstruct environmental conditions in the past from sediment cores. Here, we assess how water column diatom’s community in the NW Iberian coastal upwelling system is seasonally transferred from the surface to the seafloor sediments.
Andreia Rebotim, Antje H. L. Voelker, Lukas Jonkers, Joanna J. Waniek, Helge Meggers, Ralf Schiebel, Igaratza Fraile, Michael Schulz, and Michal Kucera
Biogeosciences, 14, 827–859, https://doi.org/10.5194/bg-14-827-2017, https://doi.org/10.5194/bg-14-827-2017, 2017
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Planktonic foraminifera species depth habitat remains poorly constrained and the existing conceptual models are not sufficiently tested by observational data. Here we present a synthesis of living planktonic foraminifera abundance data in the subtropical eastern North Atlantic from vertical plankton tows. We also test potential environmental factors influencing the species depth habitat and investigate yearly or lunar migration cycles. These findings may impact paleoceanographic studies.
Clemens Vinzenz Ullmann and Philip A. E. Pogge von Strandmann
Biogeosciences, 14, 89–97, https://doi.org/10.5194/bg-14-89-2017, https://doi.org/10.5194/bg-14-89-2017, 2017
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This study documents how much control growth rate has on the chemical composition of fossil shell material. Using a series of chemical analyses of the fossil hard part of a belemnite, an extinct marine predator, a clear connection between the rate of calcite formation and its magnesium and strontium contents was found. These findings provide further insight into biomineralization processes and help better understand chemical signatures of fossils as proxies for palaeoenvironmental conditions.
Justine Kimball, Robert Eagle, and Robert Dunbar
Biogeosciences, 13, 6487–6505, https://doi.org/10.5194/bg-13-6487-2016, https://doi.org/10.5194/bg-13-6487-2016, 2016
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Deep-sea corals are a potentially valuable archive of temperature and ocean chemistry. We analyzed clumped isotope signatures (Δ47) in live-collected aragonitic scleractinian and high-Mg calcitic gorgonian deep-sea corals and compared results to published data and found offsets between taxa. The observed patterns in deep-sea corals may record distinct mineral equilibrium signatures due to very slow growth rates, kinetic isotope effects, and/or variable acid digestion fractionation factors.
Lisa Warden, Jung-Hyun Kim, Claudia Zell, Geert-Jan Vis, Henko de Stigter, Jérôme Bonnin, and Jaap S. Sinninghe Damsté
Biogeosciences, 13, 5719–5738, https://doi.org/10.5194/bg-13-5719-2016, https://doi.org/10.5194/bg-13-5719-2016, 2016
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Enhanced analytical techniques were applied to characterize fossilized microbial cell membrane lipids from samples in the Tagus River basin spanning the last 6000 years. Using the novel methods and calibration, the pH estimates were improved upon, and this study reveals new factors that should be considered when using this proxy as well as affirms the importance of examining the provenance of these lipids before applying them for paleoclimate reconstructions.
A. Ponnurangam, M. Bau, M. Brenner, and A. Koschinsky
Biogeosciences, 13, 751–760, https://doi.org/10.5194/bg-13-751-2016, https://doi.org/10.5194/bg-13-751-2016, 2016
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Our study demonstrates that rare earth elements and yttrium (REY) accumulating in mussel shells emerge as potential proxies for environmental changes. Focusing on pH and temperature variation effects on the distribution of REY in seawater, we show that shells incorporate the free REY3+ species and that decreasing pH leads to increased REY concentrations, while rising temperatures impact the REY distribution pattern with minor effects on the absolute REY concentrations in shells.
O. T. Moldovan, S. Constantin, C. Panaiotu, R. D. Roban, P. Frenzel, and L. Miko
Biogeosciences, 13, 483–497, https://doi.org/10.5194/bg-13-483-2016, https://doi.org/10.5194/bg-13-483-2016, 2016
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The paper presents the results of a fossil invertebrates study in four caves of the Romanian Carpathians, to complement paleoenvironmental data previously reported. Oribatid mites and ostracods are the most common invertebrates in the studied cave sediments. By corroborating the fossil invertebrates' record with the information given by magnetic properties and sediment structures, complementary data on past vegetation, temperatures, and hydraulic regimes could be gathered.
C. Häggi, C. M. Chiessi, and E. Schefuß
Biogeosciences, 12, 7239–7249, https://doi.org/10.5194/bg-12-7239-2015, https://doi.org/10.5194/bg-12-7239-2015, 2015
J. M. Bernhard, W. G. Phalen, A. McIntyre-Wressnig, F. Mezzo, J. C. Wit, M. Jeglinski, and H. L. Filipsson
Biogeosciences, 12, 5515–5522, https://doi.org/10.5194/bg-12-5515-2015, https://doi.org/10.5194/bg-12-5515-2015, 2015
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We present an innovative method using osmotic pumps and the fluorescent marker calcein to help identify where and when calcareous bottom-dwelling organisms mineralize in sediments. These organisms, and their geochemical signatures in their carbonate, are the ocean’s storytellers helping us understand past marine conditions. For many species, the timing and location of their calcite growth is not known. Knowing this will enable us to reconstruct past marine environments with greater accuracy.
C. L. McKay, J. Groeneveld, H. L. Filipsson, D. Gallego-Torres, M. J. Whitehouse, T. Toyofuku, and O.E. Romero
Biogeosciences, 12, 5415–5428, https://doi.org/10.5194/bg-12-5415-2015, https://doi.org/10.5194/bg-12-5415-2015, 2015
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We highlight the proxy potential of foraminiferal Mn/Ca determined by secondary ion mass spectrometry and flow-through inductively coupled plasma optical emission spectroscopy for recording changes in bottom-water oxygen conditions. Comparisons with Mn sediment bulk measurements from the same sediment core largely agree with the results. High foraminiferal Mn/Ca occurs in samples from times of high productivity export and corresponds with the benthic foraminiferal faunal composition.
J. Schilder, C. Tellenbach, M. Möst, P. Spaak, M. van Hardenbroek, M. J. Wooller, and O. Heiri
Biogeosciences, 12, 3819–3830, https://doi.org/10.5194/bg-12-3819-2015, https://doi.org/10.5194/bg-12-3819-2015, 2015
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We show that the stable (C, N, O) isotopic composition of the water flea Daphnia pulicaria is strongly related to that of its diet (C, N) and the water they live in (O). We also show that the stable isotopic composition of the sheaths of Daphnia resting eggs (ephippia) is indicative of the isotopic composition of Daphnia that produced them. This implies that stable isotope ratios of fossil Daphnia ephippia can provide information on past ecological and climatic developments in and around lakes.
W. Clymans, L. Barão, N. Van der Putten, S. Wastegård, G. Gísladóttir, S. Björck, B. Moine, E. Struyf, and D. J. Conley
Biogeosciences, 12, 3789–3804, https://doi.org/10.5194/bg-12-3789-2015, https://doi.org/10.5194/bg-12-3789-2015, 2015
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Biogenic silica (BSi) is used as a proxy by soil scientists to identify biological effects on the Si cycle and by palaeoecologists to study environmental changes. We show the presence of tephra constituents can make measurements erroneous at low BSi concentrations, with repercussions for soil and palaeoecological studies. However, we also show that glass shards do not produce an identical dissolution signal to that of BSi, meaning they can be distinguished with appropriate experimental setups.
T. Bauersachs, J. Rochelmeier, and L. Schwark
Biogeosciences, 12, 3741–3751, https://doi.org/10.5194/bg-12-3741-2015, https://doi.org/10.5194/bg-12-3741-2015, 2015
K. R. Hendry, G. E. A. Swann, M. J. Leng, H. J. Sloane, C. Goodwin, J. Berman, and M. Maldonado
Biogeosciences, 12, 3489–3498, https://doi.org/10.5194/bg-12-3489-2015, https://doi.org/10.5194/bg-12-3489-2015, 2015
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The stable isotope composition of benthic sponge silica skeletons (spicules) has been shown to be a source of useful palaeoceanographic information about past deep seawater chemistry. Here, we investigate the biological vital effects on silica stable isotope composition in a Southern Ocean carnivorous sponge, Asbestopluma sp. We find significant variations in isotopic composition within the specimen – in both silicon and oxygen isotopes – that appear to be related to unusual spicule growth.
Y.-W. Liu, S. M. Aciego, and A. D. Wanamaker Jr.
Biogeosciences, 12, 3351–3368, https://doi.org/10.5194/bg-12-3351-2015, https://doi.org/10.5194/bg-12-3351-2015, 2015
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We report the first high-resolution strontium (87Sr/86Sr and δ88/86Sr) and boron (δ11B) isotopic values in the aragonite shell of cultured Arctica islandica. These results suggest that well-preserved subfossil specimens may be used to determine the past Sr isotopic composition of seawater. The δ11B in this experiment suggests that the boron uptake of the shell changes at a temperature threshold of 13°C and a species-specific fractionation factor may be required for seawater pH reconstructions.
L. Jonkers and M. Kučera
Biogeosciences, 12, 2207–2226, https://doi.org/10.5194/bg-12-2207-2015, https://doi.org/10.5194/bg-12-2207-2015, 2015
K. Kaczmarek, G. Langer, G. Nehrke, I. Horn, S. Misra, M. Janse, and J. Bijma
Biogeosciences, 12, 1753–1763, https://doi.org/10.5194/bg-12-1753-2015, https://doi.org/10.5194/bg-12-1753-2015, 2015
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Culture experiments based on a decoupled pH and CO32- chemistry indicate that the δ11B of the test of A. lessonii is related to pH whereas the B/Ca of the foraminiferal shells show a positive correlation with B(OH)4-/HCO3-. The latter observation suggests a competition between B(OH)4- and HCO3- of the culture media for B uptake into the test.
T. Pados, R. F. Spielhagen, D. Bauch, H. Meyer, and M. Segl
Biogeosciences, 12, 1733–1752, https://doi.org/10.5194/bg-12-1733-2015, https://doi.org/10.5194/bg-12-1733-2015, 2015
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Fossil planktic foraminifera and their geochemical composition are commonly used proxies in palaeoceanography. Our study with living specimens revealed that in the Fram Strait both Neogloboquadrina pachyderma and Turborotalita quinqueloba from the water column have lower δ18O and δ13C values than inorganically precipitated calcite/fossil tests from the sediment surface. These offsets indicate biological influence during calcification and a change of water column properties in the recent past.
K. H. Salmon, P. Anand, P. F. Sexton, and M. Conte
Biogeosciences, 12, 223–235, https://doi.org/10.5194/bg-12-223-2015, https://doi.org/10.5194/bg-12-223-2015, 2015
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Planktonic foraminifera are an important component of the marine carbon/carbonate cycle, yet the environmental controls on their abundances are still debated. In our study, we see larger foraminifera fluxes, particularly of heavy species, during winter when nutrients are mixed into the surface waters or during eddy mixing. Climatic factors that control mixing could therefore control the flux of planktonic foraminfera and the carbon/carbonate flux on seasonal and decadal timescales.
N. Glock, V. Liebetrau, and A. Eisenhauer
Biogeosciences, 11, 7077–7095, https://doi.org/10.5194/bg-11-7077-2014, https://doi.org/10.5194/bg-11-7077-2014, 2014
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Our study explores the correlation of I/Ca ratios in four benthic foraminiferal species (three calcitic, one aragonitic) from the Peruvian OMZ with bottom water oxygenation ([O2]BW), and evaluates foraminiferal I/Ca ratios as a possible redox proxy. All species have a positive trend in the I/Ca ratios as a function of [O2]BW. Only for the aragonitic species Hoeglundina elegans is this trend not significant. The highest significance has been found for Uvigerina striata.
H. Wang, W. Liu, and C. L. Zhang
Biogeosciences, 11, 6755–6768, https://doi.org/10.5194/bg-11-6755-2014, https://doi.org/10.5194/bg-11-6755-2014, 2014
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The relationships between environmental variables and the cyclization of branched tetraethers (CBT) were investigated in surface soils in the Chinese Loess Plateau (CLP) and its vicinity. We find that CBT is not sensitive to soil pH but correlates best with soil moisture in these alkaline soils from arid-subhumid regions. Therefore, we suggest that CBT can potentially be used as a palaeorainfall proxy on the CLP and applied it to three loess-paleosol sequences published before.
L. K. Buckles, J. W. H. Weijers, X.-M. Tran, S. Waldron, and J. S. Sinninghe Damsté
Biogeosciences, 11, 5539–5563, https://doi.org/10.5194/bg-11-5539-2014, https://doi.org/10.5194/bg-11-5539-2014, 2014
T. M. Hill, C. R. Myrvold, H. J. Spero, and T. P. Guilderson
Biogeosciences, 11, 3845–3854, https://doi.org/10.5194/bg-11-3845-2014, https://doi.org/10.5194/bg-11-3845-2014, 2014
J. Menges, C. Huguet, J. M. Alcañiz, S. Fietz, D. Sachse, and A. Rosell-Melé
Biogeosciences, 11, 2571–2581, https://doi.org/10.5194/bg-11-2571-2014, https://doi.org/10.5194/bg-11-2571-2014, 2014
J. Raddatz, A. Rüggeberg, S. Flögel, E. C. Hathorne, V. Liebetrau, A. Eisenhauer, and W.-Chr. Dullo
Biogeosciences, 11, 1863–1871, https://doi.org/10.5194/bg-11-1863-2014, https://doi.org/10.5194/bg-11-1863-2014, 2014
J. Bollmann
Biogeosciences, 11, 1899–1910, https://doi.org/10.5194/bg-11-1899-2014, https://doi.org/10.5194/bg-11-1899-2014, 2014
J. Groeneveld and H. L. Filipsson
Biogeosciences, 10, 5125–5138, https://doi.org/10.5194/bg-10-5125-2013, https://doi.org/10.5194/bg-10-5125-2013, 2013
R. A. Eagle, J. M. Eiler, A. K. Tripati, J. B. Ries, P. S. Freitas, C. Hiebenthal, A. D. Wanamaker Jr., M. Taviani, M. Elliot, S. Marenssi, K. Nakamura, P. Ramirez, and K. Roy
Biogeosciences, 10, 4591–4606, https://doi.org/10.5194/bg-10-4591-2013, https://doi.org/10.5194/bg-10-4591-2013, 2013
G. Milzer, J. Giraudeau, J. Faust, J. Knies, F. Eynaud, and C. Rühlemann
Biogeosciences, 10, 4433–4448, https://doi.org/10.5194/bg-10-4433-2013, https://doi.org/10.5194/bg-10-4433-2013, 2013
N. Wright, S. Zahirovic, R. D. Müller, and M. Seton
Biogeosciences, 10, 1529–1541, https://doi.org/10.5194/bg-10-1529-2013, https://doi.org/10.5194/bg-10-1529-2013, 2013
E. A. A. Versteegh, M. E. Blicher, J. Mortensen, S. Rysgaard, T. D. Als, and A. D. Wanamaker Jr.
Biogeosciences, 9, 5231–5241, https://doi.org/10.5194/bg-9-5231-2012, https://doi.org/10.5194/bg-9-5231-2012, 2012
L. Jonkers, L. J. de Nooijer, G.-J. Reichart, R. Zahn, and G.-J. A. Brummer
Biogeosciences, 9, 4851–4860, https://doi.org/10.5194/bg-9-4851-2012, https://doi.org/10.5194/bg-9-4851-2012, 2012
Cited articles
Adey, W. H.: The genus Clathromorphum (Corallinaceae) in the Gulf of Maine, Hydrobiologia,
539–573, available from:
http://link.springer.com/article/10.1007/BF00045545 (last access: 15 May 2014),
1965.
Adey, W. H.: The effects of light and temperature on growth rates in
Boreal-Subarctic crustose corallines, J. Phycol., 9, 269–276, 1970.
Adey, W. H.: Temperature control of reproduction and productivity in a
subarctic coralline alga, Phycologia, 12, 111–118, 1973.
Adey, W. H.: Review Coral Reefs: Algal Structured and Mediated Ecosystems in
Shallow, Turbulent, Alkaline Waters, J. Phycol., 406, 393–406,
https://doi.org/10.1046/j.1529-8817.1998.340393.x, 1998.
Adey, W. H. and Hayek, L.-A. C.: Elucidating marine biogeography with
macrophytes: quantitative analysis of the North Atlantic supports the
thermogeographic model and demonstrates a distinct subarctic region in the
Northwestern Atlantic, Northeast. Nat., 18, 1–128,
https://doi.org/10.1656/045.018.m801, 2011.
Adey, W. H. and Loveland, K.: Dynamic aquaria?: building and restoring living
ecosystems, Academic, available from:
https://www.sciencedirect.com/science/book/9780123706416 (last access:
20 January 2018), 2007.
Adey, W. H., Chamberlain, Y. M., and Irvine, L. M.: An SEM-based analysis of
the morphology, anatomy, and reproduction of Lithothamnion tophiforme (Esper) unger (Corallinales,
Rhodophyta), with a comparative study of associated North Atlantic
arctic/subarctic melobesioideae, J. Phycol., 41, 1010–1024,
https://doi.org/10.1111/j.1529-8817.2005.00123.x, 2005.
Adey, W. H., Halfar, J., and Williams, B.: The coralline genus
Clathromorphum Foslie emend. Adey, Smithson. Contrib. Mar. Sci., 40, 1–41, 2013.
Adey, W., Halfar, J., Humphreys, A., Suskiewicz, T., Belanger, D., Gagnon,
P., and Fox, M.: Subarctic rhodolith beds promote longevity of crustose
coralline algal buildups and their climate archiving potential, Palaios,
30, 281–293, https://doi.org/10.2110/palo.2014.075, 2015a.
Adey, W. H., Hernandez-Kantun, J. J., Johnson, G., and Gabrielson, P. W.: DNA
sequencing, anatomy, and calcification patterns support a monophyletic,
subarctic, carbonate reef-forming Clathromorphum (Hapalidiaceae,
Corallinales, Rhodophyta), J. Phycol., 51, 189–203, https://doi.org/10.1111/jpy.12266,
2015b.
Adey, W. H., Hernandez-Kantun, J. J., Gabrielson, P. W., Nash, M. C., and
Hayek, L. C.: Phymatolithon (Melobesioideae, Hapalidiales) in the
Boreal-Subarctic transition zone of the North Atlantic: a correlation of
plastid DNA markers with morpho-anatomy, ecology and biogeography, Smithson.
Contrib. Mar. Sci., April, The journal name is: Smithsonian Contributions to
the Marine Sciences, 41, 2018.
Burdett, H., Kamenos, N. A., and Law, A.: Using coralline algae to understand
historic marine cloud cover, Palaeogeogr. Palaeocl.,
302, 65–70, https://doi.org/10.1016/j.palaeo.2010.07.027, 2011.
Chan, P., Halfar, J., Williams, B., Hetzinger, S., Steneck, R. S., Zack, T.,
and Jacob, D. E.: Freshening of the Alaska Coastal Current recorded by
coralline algal Ba ∕ Ca ratios, J. Geophys. Res., 116, G01032,
https://doi.org/10.1029/2010JG001548, 2011.
Gamboa, G., Halfar, J., Hetzinger, S., Adey, W. H., Zack, T., Kunz, B. E., and
Jacob, D. E.: Mg ∕ Ca ratios in coralline algae record northwest Atlantic
temperature variations and North Atlantic Oscillation relationships, J.
Geophys. Res., 115, C12044, https://doi.org/10.1029/2010JC006262, 2010.
Halfar, J., Steneck, R. S., Joachimski, M., Kronz, A., and Wanamaker, A. D.:
Coralline red algae as high-resolution climate recorders, Geology, 36,
463–466, 2008.
Halfar, J., Williams, B., Hetzinger, S., Steneck, R. S., Lebednik, P. A.,
Winsborough, C., Omar, A., Chan, P., and Wanamaker, A. D.: 225 years of
Bering Sea climate and ecosystem dynamics revealed by coralline algal
growth-increment widths, Geology, 39, 579–582, https://doi.org/10.1130/G31996.1,
2011a.
Halfar, J., Hetzinger, S., Adey, W. H., Zack, T., Gamboa, G., Kunz, B. E.,
Williams, B., and Jacob, D. E.: Coralline algal growth-increment widths
archive North Atlantic climate variability, Palaeogeogr. Palaeocl., 302, 71–80, https://doi.org/10.1016/j.palaeo.2010.04.009, 2011b.
Halfar, J., Adey, W. H., Kronz, A., Hetzinger, S., Edinger, E., and Fitzhugh,
W. W.: Arctic sea-ice decline archived by multicentury annual-resolution
record from crustose coralline algal proxy, P. Natl. Acad. Sci. USA, 110,
1973736–1973741, https://doi.org/10.1073/pnas.1313775110, 2013.
Hetzinger, S., Halfar, J., Kronz, A., Steneck, R. S., Adey, W. H., Lebednik,
P. A., and Schöne, B. R.: High-resolution Mg ∕ Ca ratios in a
coralline red alga as a proxy for Bering Sea temperature variations from 1902
to 1967, Palaios, 24, 406–412, https://doi.org/10.2110/palo.2008.p08-116r, 2009.
Hetzinger, S., Halfar, J., Kronz, A., Simon, K., Adey, W. H., and Steneck, R.
S.: Reproducibility of Clathromorphum compactum coralline algal Mg ∕ Ca ratios and comparison to
high-resolution sea surface temperature data, Geochim. Cosmochim. Ac., 220,
96–109, 2018.
Jørgensbye, H. I. Ø. and Halfar, J.: Overview of coralline red algal
crusts and rhodolith beds (Corallinales, Rhodophyta) and their possible
ecological importance in Greenland, Polar Biol., 40, 1–15,
https://doi.org/10.1007/s00300-016-1975-1, 2016.
Kamenos, N. A., Cusack, M., and Moore, P. G.: Coralline algae are global
palaeothermometers with bi-weekly resolution, Geochim. Cosmochim. Ac., 72,
771–779, https://doi.org/10.1016/j.gca.2007.11.019, 2008.
Moberly, R. J.: Composition of magnesian calcites of algae and pelecypods by
electron microprobe analysis, Sedimentology, 11, 61–82, 1968.
Nash, M. C. and Adey, W.: Multiple phases of mg-calcite in crustose coralline
algae suggest caution for temperature proxy and ocean acidification
assessment: lessons from the ultrastructure and biomineralization in
Phymatolithon (Rhodophyta, Corallinales), edited by: Hurd, C., J.
Phycol., 53, 970–984, https://doi.org/10.1111/jpy.12559, 2017.
Nash, M. C. and Adey, W.: Anatomical structure overrides temperature controls
on magnesium uptake – calcification in the Arctic/subarctic coralline algae
Leptophytum laeve and Kvaleya epilaeve (Rhodophyta; Corallinales),
Biogeosciences, 15, 781–795, https://doi.org/10.5194/bg-15-781-2018, 2018.
R Core Team: R: A Language and Environment for Statistical Computing,
available from: http://www.R-project.org, 2016.
Williams, S., Adey, W., Halfar, J., Kronz, A., Gagnon, P., Bélanger, D., and Nash,
M.: Clathromorphum light/temperature experiment data, available at:
https://doi.org/10.5281/zenodo.1419109TS2,
last access: 19 September 2018.
Small, A. M. and Adey, W. H.: Reef corals, zooxanthellae and free-living
algae: A microcosm study that demonstrates synergy between calcification and
primary production, Ecol. Eng., 16, 443–457,
https://doi.org/10.1016/S0925-8574(00)00066-5, 2001.
Steneck, R. S.: A limpet-coralline algal association:adaptations and defenses
between a selective herbivore and its prey, Ecology, 63, 507–522, 1982.
Teichert, S. and Freiwald, A.: Polar coralline algal CaCO3-production
rates correspond to intensity and duration of the solar radiation,
Biogeosciences, 11, 833–842, https://doi.org/10.5194/bg-11-833-2014, 2014.
Teichert, S., Woelkerling, W. J., Rüggeberg, A., Wisshak, M., Piepenburg,
D., Meyerhöfer, M., Form, A., and Freiwald, A.: Arctic rhodolith beds and
their environmental controls (Spitsbergen, Norway), Facies, 60, 15–37,
https://doi.org/10.1007/s10347-013-0372-2, 2013.
Williams, B., Halfar, J., DeLong, K. L., Hetzinger, S., Steneck, R. S., and
Jacob, D. E.: Multi-specimen and multi-site calibration of Aleutian coralline
algal Mg ∕ Ca to sea surface temperature, Geochim. Cosmochim. Ac., 139,
190–204, https://doi.org/10.1016/j.gca.2014.04.006, 2014.
Williams, S., Halfar, J., Zack, T., Hetzinger, S., Blicher, M., and
Juul-Pedersen, T.: Comparison of climate signals obtained from encrusting and
free-living rhodolith coralline algae, Chem. Geol., 476, 418–428,
https://doi.org/10.1016/j.chemgeo.2017.11.038, 2018.
Wisshak, M., Bartholomä, A., Beuck, L., Büscher, J., Form, A.,
Freiwald, A., Halfar, J., Hetzinger, S., Heugten, B. van, Hissmann, K.,
Holler, P., Meyer, N., Neumann, H., Raddatz, J., Rüggeberg, A., Teichert,
S., and Wehrmann, A.: Habitat characteristics and carbonate cycling of
macrophyte-supported polar carbonate factories (Svalbard) – Cruise No. MSM55
– June 11–June 29, 2016 – Reykjavik (Iceland) – Longyearbyen (Norway),
2017.
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