470 Works

Noble gas measurements beneath Filchner-Ronne Ice Sheet, supplement to: Huhn, Oliver; Hattermann, Tore; Davis, Peter E D; Dunker, Erich; Hellmer, Hartmut H; Nicholls, Keith W; Østerhus, Svein; Rhein, Monika; Schröder, Michael; Sültenfuß, Jürgen (2018): Basal Melt and Freezing Rates From First Noble Gas Samples Beneath an Ice Shelf. Geophysical Research Letters, 45(16), 8455-8461

Oliver Huhn, Tore Hattermann, Peter Davis, Erich Dunker, Hartmut H Hellmer, Svein Østerhus, Monika Rhein, Michael Schröder, Jürgen Sültenfuß & Keith W Nicholls
A climatically induced acceleration in ocean‐driven melting of Antarctic ice shelves would have consequences for both the discharge of continental ice into the ocean and thus global sea level, and for the formation of Antarctic Bottom Water and the oceanic meridional overturning circulation. Using a novel gas‐tight in situ water sampler, noble gas samples have been collected from six locations beneath the Filchner Ice Shelf, the first such samples from beneath an Antarctic ice shelf....

Landsliding analyses at site GeoB14401 and GeoB14403, NE Gela Basin, Strait of Sicily, Mediterranean Sea, supplement to: Kuhlmann, Jannis; Asioli, Alessandra; Trincardi, Fabio; Klügel, Andreas; Huhn, Katrin (2017): Landslide Frequency and Failure Mechanisms at NE Gela Basin (Strait of Sicily). Journal of Geophysical Research-Earth Surface, 122(11), 2223-2243

Jannis Kuhlmann, Alessandra Asioli, Fabio Trincardi, Andreas Klügel & Katrin Huhn
This study uses an integrated chronological framework from two MeBo boreholes and complementary ultra-high-resolution acoustic profiling in order to assess (1) the frequency of submarine landsliding at the continental margin of NE Gela Basin and (2) the associated mechanisms of failure. Accurate age control was achieved through absolute radiocarbon dating and indirect dating relying on isotope stratigraphic and micropaleontological reconstructions. A total of nine major slope failure events have been recognized that occurred within the...

Catch metadata, stomach content of herring and sprat and zooplankton data collected during a field cruise in the NE Baltic Sea, July 2015, supplement to: Ojaveer, Henn; Lankov, Ain; Raid, Tiit; Põllumäe, Arno; Klais, Riina (2018): Selecting for three copepods - feeding of sprat and herring in the Baltic Sea. ICES Journal of Marine Science, fsx249, 11 pp

Henn Ojaveer, Ain Lankov, Tiit Raid, Arno Põllumäe & Riina Klais
This data collection contains the detailed stomach content of 1495 herring and sprat, sampled in a July 2015 field cruise in NE Baltic Sea, accompanied by the zooplankton net sample at the end of each trawl.

Effect of warming and acidification on the defense of Fucus vesiculosus in benthocosm experiments, supplement to: Raddatz, Stefanie; Guy-Haim, Tamar; Rilov, Gil; Wahl, Martin (2017): Future warming and acidification effects on anti-fouling and anti-herbivory traits of the brown alga Fucus vesiculosus (Phaeophyceae). Journal of Phycology, 53(1), 44-58

Tamar Guy-Haim, Stefanie Raddatz, Gil Rilov & Martin Wahl
Human-induced ocean warming and acidification have received increasing attention over the past decade and are considered to have substantial consequences for a broad range of marine species and their interactions. Understanding how these interactions shift in response to climate change is particularly important with regard to foundation species, such as the brown alga Fucus vesiculosus. This macroalga represents the dominant habitat former on coastal rocky substrata of the Baltic Sea, fulfilling functions essential for the...

Radiocarbon-dated multiproxy record of Holocene lacustrine sediments from Laguna Azul, southern Patagonia (Argentina), supplement to: Zolitschka, Bernd; Fey, Michael; Janssen, Stephanie; Maidana, Nora; Mayr, Christoph; Wulf, Sabine; Haberzettl, Torsten; Corbella, Hugo; Lücke, Andreas; Ohlendorf, Christian; Schäbitz, Frank (2019): Southern Hemispheric Westerlies control sedimentary processes of Laguna Azul (south-eastern Patagonia, Argentina). The Holocene, 29(3), 403-420

Bernd Zolitschka, Michael Fey, Stephanie Janssen, Nora Maidana, Christoph Mayr, Sabine Wulf, Torsten Haberzettl, Andreas Lücke, Christian Ohlendorf & Frank Schäbitz
Multiproxy investigations, including XRF core-scanning, sedimentology, stable isotopes, pollen and diatoms, of lacustrine sediments from Laguna Azul (52 °S) document a superior climatic control on environmental conditions: Position and strength of Southern Hemispheric Westerlies (SHW) have overprinted the lake's ontogeny. SHW influenced local hydroclimatic conditions on millennial to centennial timescales, which impact on water-column stratification as well as on lake-level fluctuations with feedbacks on lakeshore erosion, algal communities, trophic conditions, methanogenesis and authigenic mineral formation....

Increased fitness of a key appendicularian zooplankton species under warmer, acidified seawater conditions, supplement to: Bouquet, Jean-Marie; Troedsson, Christofer; Novac, Aliona; Reeve, Magnus; Lechtenbörger, Anna K; Massart, Wendy; Skaar, Katrine S; Aasjord, Anne; Dupont, Sam; Thompson, Eric M (2018): Increased fitness of a key appendicularian zooplankton species under warmer, acidified seawater conditions. PLoS ONE, 13(1), e0190625

Jean-Marie Bouquet, Christofer Troedsson, Aliona Novac, Magnus Reeve, Anna K Lechtenbörger, Wendy Massart, Katrine S Skaar, Anne Aasjord, Sam Dupont & Eric M Thompson
Ocean warming and acidification (OA) may alter the fitness of species in marine pelagic ecosystems through community effects or direct physiological impacts. We used the zooplanktonic appendicularian, Oikopleura dioica, to assess temperature and pH effects at mesocosm and microcosm scales. In mesocosms, both OA and warming positively impacted O. dioica abundance over successive generations. In microcosms, the positive impact of OA, was observed to result from increased fecundity. In contrast, increased pH, observed for example...

CICE outputs from Navy Earth System Model (NESM) and Global Ocean Forecast System (GOFS) 3.1, 2018

Richard A Allard, Neil P Barton, E Joseph Metzger & Michael W Phelps
This is part of the YOPP project and was updated with new 2018 model results regularly. Please note, that in December 2018 the name of the Navy Earth System Model (NESM) changed to Navy Earth System Prediction Capability (ESPC).

Chlorophyll-a, Fv/Fm, and nutrient values for near surface waters and incubation experiment during SONNE cruise SO243, supplement to: Browning, Thomas; Rapp, Insa; Schlosser, Christian; Gledhill, Martha; Achterberg, Eric Pieter; Bracher, Astrid; Le Moigne, Frédéric A C (2018): Influence of iron, cobalt, and vitamin B12 supply on phytoplankton growth in the tropical East Pacific during the 2015 El Niño. Geophysical Research Letters

Thomas Browning
Iron (Fe), cobalt (Co), and vitamin B12 addition experiments were performed in the eastern Equatorial Pacific/Peruvian upwelling zone during the 2015 El Niño event. Near the Peruvian coastline, apparent photosystem II photochemical efficiencies (Fv/Fm) were unchanged by nutrient addition and chlorophyll-a tripled in untreated controls over two days, indicating nutrient replete conditions. Conversely, Fe amendment further away from the coastline in the high nitrate, low Fe zone significantly increased Fv/Fm and chlorophyll-a concentrations. Mean chlorophyll-a...

Holocene and MIS2 atmospheric mineral dust concentration and composition from the Talos Dome ice core and from potential source areas, supplement to: Baccolo, Giovanni; Delmonte, Barbara; Albani, Samuel; Baroni, Carlo; Cibin, Giannantonio; Frezzotti, Massimo; Hampai, Dariush; Marcelli, Augusto; Revel, M; Salvatore, Maria Cristina; Stenni, Barbara; Maggi, Valter (2018): Regionalization of the atmospheric dust cycle on the periphery of the East Antarctic ice sheet since the Last Glacial Maximum. Geochemistry, Geophysics, Geosystems

Giovanni Baccolo, Barbara Delmonte, Samuel Albani, Carlo Baroni, Giannantonio Cibin, Massimo Frezzotti, Dariush Hampai, Augusto Marcelli, Marie Revel, Maria Cristina Salvatore, Barbara Stenni & Valter Maggi
The present data concerns:-Atmospheric dust concentration from the Antarctic ice core Talos Dome during the time interval between 700 and 25,000 years before present (AICC2012 chronology).-Dust Potential Source Areas Composition: the major element composition of potential dust source areas from Antarctica (Victoria Land), Australia and South America.-The major element composition of the atmospheric mineral dust extracted from the Talos Dome ice core sections. The age of the samples ranges between 1.9 Kyr BP and 32.9...

Master tracks in different resolutions during POLAR 5 campaign PAMARCMIP_2018

Andreas Herber
This dataset was created via processing of raw position data acquired by the GPS sensor for scientific equipment on Polar 6/Polar 5 to receive a validated master track which is used as reference of further expedition data.

Alkanes in fresh surface asphalts, supplement to: Rubin-Blum, Maxim; Antony, Chakkiath Paul; Borowski, Christian; Sayavedra, Lizbeth; Pape, Thomas; Sahling, Heiko; Bohrmann, Gerhard; Kleiner, Manuel; Redmond, Molly C; Valentine, D L; Dubilier, Nicole (2017): Short-chain alkanes fuel mussel and sponge Cycloclasticus symbionts from deep-sea gas and oil seeps. Nature Microbiology, 2, 17093

Thomas Pape, Patrizia Geprägs, Stefanie Buchheister & Gerhard Bohrmann
Cycloclasticus bacteria are ubiquitous in oil-rich regions of the ocean and are known for their ability to degrade polycyclic aromatic hydrocarbons (PAHs). In this study, we describe Cycloclasticus that have established a symbiosis with Bathymodiolus heckerae mussels and poecilosclerid sponges from asphalt-rich, deep-sea oil seeps at Campeche Knolls in the southern Gulf of Mexico. Genomic and transcriptomic analyses revealed that, in contrast to all previously known Cycloclasticus, the symbiotic Cycloclasticus appears to lack the genes...

Pore water and solid phase data; short sediment cores from Maxwell Bay and Potter Cove, King George Island (Antarctica), supplement to: Henkel, Susann; Kasten, Sabine; Hartmann, Jan; Silva Busso, A; Staubwasser, Michael (2018): Iron cycling and stable Fe isotope fractionation in Antarctic shelf sediments, King George Island. Geochimica et Cosmochimica Acta

Susann Henkel, Sabine Kasten, Jan Hartmann, A Silva Busso & Michael Staubwasser
Geochemical data were gained for short sediment cores from Maxwell Bay and Potter Cove (King George Island, Antarctica) in 2012 and 2013. We investigated the influence of different iron transport pathways and their effect on the early diagenetic cycling of this nutrient.The dataset includes pore water data (alkalinity, sulfate, Fe2+, NH4+) for 14 sites and solid phase data (including stable iron isotope data for sequentially extracted Fe pools) as well as pore water stable iron...

Nannofossil abundance from IODP site 361-U1476 (2.85-1.85 Ma), supplement to: Tangunan, Deborah N; Baumann, Karl-Heinz; Just, Janna; LeVay, Leah J; Barker, Stephen; Brentegani, Luna; De Vleeschouwer, David; Hall, Ian R; Hemming, Sidney R; Norris, Richard D; IODP Expedition 361 Scientists (2018): The last 1 million years of the extinct genus Discoaster: Plio-Pleistocene environment and productivity at Site U1476 (Mozambique Channel). Palaeogeography, Palaeoclimatology, Palaeoecology, 505, 187-197

Deborah N Tangunan
A detailed paleoenvironment reconstruction from the Mozambique Channel, western Indian Ocean, based on the calcareous nannoplankton assemblages was conducted for the interval between 2.85 and 1.85 Myr. This study covers the period during which the successive extinction of the last five species of discoasters occurred. New productivity data obtained from the abundances of the Discoaster species (Discoaster brouweri, D. triradiatus, D. pentaradiatus, D. surculus, and D. tamalis) and other indicative calcareous nannoplankton taxa showed abundance...

Passive acoustic telemetry data for lenok (Brachymystax lenok Pallas 1773) in the Eroo River and some tributaries (Selenga River basin, Mongolia, 2011-2012), supplement to: Kaus, Andrew; Büttner, Olaf; Karthe, Daniel; Schäffer, Michael; Borchardt, Dietrich (2018): Migration and movement profiles of a potadromous fish (Brachymystax lenok Pallas 1773) in a highly connected river system (Mongolia). Ecology of Freshwater Fish, 27(3), 752-766

Andrew Kaus, Olaf Büttner, Daniel Karthe, Michael Schäffer & Dietrich Borchardt
The aim of this research was to describe and quantify the seasonal migration patterns and fine-scale movement profiles of Brachymystax lenok, a threatened, potadromous salmonid that inhabits the highly connected, boreal river basins of Siberia and northern Asia. During this study 21 mature individuals were monitored over a 15 month period in the upper Eroo River basin, Mongolia, using passive acoustic telemetry. The time and position of the fish is provided here.

231Pa/230Th measurements and related isotope series and SiO2 of five sediment cores from the Southwest Pacific

Thomas A Ronge, Jörg Lippold, Walter Geibert, Samuel L Jaccard, Sebastian Mieruch-Schnülle, Finn Süfke & Ralf Tiedemann
Downcore measurements of SiO2 and 231Pa/230Th on sediment cores from the New Zaland Margin and the East Pacific Rise. The sediment cores were collected during expedtions PS75 (2010) and SO213 (2011).Our downcore records cover the last ~35 ka. SiO2 measurements were conducted to analyze a potential impact on opal on our 231Pa/230Th ratios, that in turn were used to reconstruct past changes in South Pacific Overtruning Circulation.Opal measurements followed the method of Müller and Schneider...

Diatom-bound nitrogen isotope and opal flux records over the Holocene period in Southern Ocean sediment cores MD12-3396, MD11-3353 and PS75/072-4, supplement to: Studer, Anja S; Sigman, Daniel M; Martínez‐García, Alfredo; Thöle, Lena; Michel, Elisabeth; Jaccard, Samuel L; Lippold, Jörg; Mazaud, Alain; Wang, Xingchen; Robinson, Laura F; Adkins, Jess F; Haug, Gerald H (2018): Increased nutrient supply to the Southern Ocean during the Holocene and its implications for the pre-industrial atmospheric CO2 rise. Nature Geoscience

Anja S Studer, Daniel M Sigman, Alfredo Martínez‐García, Lena Thöle, Elisabeth Michel, Samuel L Jaccard, Jörg Lippold, Alain Mazaud, Xingchen Wang, Laura F Robinson, Jess F Adkins & Gerald H Haug
A rise in the atmospheric CO2 concentration of ~20 parts per million over the course of the Holocene has long been recognized as exceptional among interglacials and is in need of explanation. Previous hypotheses involved natural or anthropogenic changes in terrestrial biomass, carbonate compensation in response to deglacial outgassing of oceanic CO2, and enhanced shallow water carbonate deposition. Here, we compile new and previously published fossil-bound nitrogen isotope records from the Southern Ocean that indicate...

Different Mid-Pleistocene transition analysis from IODP Site 306-U1314, supplement to: Hernández-Almeida, Iván; Sierro, Francisco Javier; Flores, José-Abel; Cacho, Isabel; Filippelli, Gabriel M (2013): Palaeoceanographic changes in the North Atlantic during the Mid-Pleistocene Transition (MIS 31-19) as inferred from planktonic foraminiferal and calcium carbonate records. Boreas, 42(1), 140-159

Iván Hernández-Almeida, Francisco Javier Sierro, José-Abel Flores, Isabel Cacho & Gabriel M Filippelli
Marine sediments from the Integrated Ocean Drilling Project (IODP) Site U1314 (56.36°N, 27.88°W), in the subpolar North Atlantic, were studied for their planktonic foraminifera, calcium carbonate content, and Neogloboqudrina pachyderma sinistral (sin.) δ13C records in order to reconstruct surface and intermediate conditions in this region during the Mid‐Pleistocene Transition (MPT). Variations in the palaeoceanography and regional dynamics of the Arctic Front were estimated by comparing CaCO3 content, planktonic foraminiferal species abundances, carbon isotopes and ice‐rafted...

Surface pollen assemblages from Rebun Island, common fossil pollen taxa recorded in the RK12 sediment core (Lake Kushu) and dimensional measurements of charred barley grains from the Hamanaka 2 archaeological site (Rebun Island), supplement to: Leipe, Christian; Müller, Stefanie; Hille, Konrad; Kato, Hirofumi; Kobe, Franziska; Schmidt, Mareike; Seyffert, Konrad; Spengler III, Robert; Wagner, Mayke; Weber, Andrzej W; Tarasov, Pavel E (2018): Vegetation change and human impacts on Rebun Island (Northwest Pacific) over the last 6000 years. Quaternary Science Reviews, 193, 129-144

Christian Leipe, Stefanie Müller, Konrad Hille, Hirofumi Kato, Franziska Kobe, Mareike Schmidt, Konrad Seyffert, Robert Spengler III, Mayke Wagner, Andrzej W Weber & Pavel E Tarasov
This study presents a high-resolution, chronologically well-constrained pollen record from Lake Kushu (45°25′58″N, 141°02′05″E) and a record of archaeobotanical remains from the nearby Hamanaka 2 archaeological site. The pollen record suggests continuous long-term cooling, which parallels the decline in Northern Hemisphere summer insolation. This cooling trend is overlaid by several rather quick transitions towards cooler conditions (ca. 5540/5350, 1550, and 390 cal BP) and one distinct decadal-scale cold event around 4130 cal BP. These shifts,...

Occurence data for the non-indigenous jellyfish species Blackfordia virginica in NW Europe from 2010-2017, supplement to: Jaspers, Cornelia; Huwer, Bastian; Weiland-Bräuer, Nancy; Clemmesen, Catriona (2018): First record of the non-indigenous jellyfish Blackfordia virginica (Mayer, 1910) in the Baltic Sea. Helgoland Marine Research, 72(1)

Cornelia Jaspers, Bastian Huwer, Nancy Weiland-Bräuer & Catriona Clemmesen
Positions, sampling times and occurence data for the non-indigenous jellyfish species Blackfordia virginica in NW Europe.

Data from: Generality in multispecies responses to ocean acidification revealed through multiple hypothesis testing, supplement to: Barner, A K; Chan, F; Hettinger, A; Hacker, S D; Marshall, K; Menge, B A (2018): Generality in multispecies responses to ocean acidification revealed through multiple hypothesis testing. Global Change Biology

A K Barner, F Chan, A Hettinger, S D Hacker, K Marshall & B A Menge
Decades of research have demonstrated that many calcifying species are negatively affected by ocean acidification, a major anthropogenic threat in marine ecosystems. However, even closely-related species may exhibit different responses to ocean acidification and less is known about the drivers that shape such variation in different species. Here, we examine the drivers of physiological performance under ocean acidification in a group of five species of turf-forming coralline algae. Specifically, quantifying the relative weight of evidence...

Wet dissolved carbon concentration during the concentrated rainfall season (July-September, 2015) in Yangjuangou Catchment, Loess Plateau

Linhua Wang, Haw Yen, Liding Chen, Xinhui E & Yafeng Wang
Wet dissolved carbon deposition is a critical node of the global carbon cycle, but little is known about dissolved organic and inorganic carbon (DOC and DIC) concentrations and fluxes in the semi-arid areas of the Loess Plateau Region (LPR). In this study, we measured variations of DOC and DIC concentration in rainfalls at Yangjuangou Ecological Restoration and Soil and Water Observatory. Rainwater samples were collected in 16 rainfall events from July to September and the...

Grain size distribution and documentation of Bermuda North Lagoon sediments, supplement to: Gischler, Eberhard; Kuhn, Gerhard (2018): Anatomy of the Holocene inundation of an isolated carbonate platform: Bermuda North Lagoon, western Atlantic. The Depositional Record

Eberhard Gischler & Gerhard Kuhn
The detailed Holocene inundation history of the Bermuda North Lagoon may be used as model for transgressive and highstand sequences in carbonate platforms. Sedimentation and facies development were controlled largely by sea-level rise and antecedent topography. Four late Pleistocene to Holocene sequences may be identified in North Lagoon based on a combined analysis of 200 km shallow reflection seismics and 40 cores including 28 radiometric and U/Th-ages. The sequences were deposited during sea-level highstands and...

Plant biomass data (measured from 2012 to 2015) and plant trait data (measured in 2015), supplement to: van Moorsel, Sofia J; Hahl, Terhi; Wagg, Cameron; De Deyn, Gerlinde B; Flynn, Dan F B; Zuppinger-Dingley, Debra; Schmid, Bernhard; Chave, Jerome (2018): Community evolution increases plant productivity at low diversity. Ecology Letters, 21(1), 128-137

Sofia J van Moorsel, Terhi Hahl, Cameron Wagg, Gerlinde B De Deyn, Dan F B Flynn & Debra Zuppinger-Dingley
The present study was conducted at the Jena Experiment field site from 2011 to 2015. The 48 experimental plant communities included twelve monocultures (of which one was removed from all analyses because it was planted with the wrong species), twelve 2-species mixtures, twelve 4-species mixtures and twelve 8-species mixtures. We used two community-evolution treatments (plant histories); plants with eight years of co-selection history in different plant communities in the Jena Experiment (communities of co-selected plants)...

Ice thickness from radio-echo sounding (RES) and radar attenuation from numerical modelling for Recovery Glacier, Antarctica, supplement to: Humbert, Angelika; Steinhage, Daniel; Helm, Veit; Beyer, Sebastian; Kleiner, Thomas (2018): Missing Evidence of Widespread Subglacial Lakes at Recovery Glacier, Antarctica. Journal of Geophysical Research-Earth Surface, 123(11), 2802-2826

Angelika Humbert, Daniel Steinhage, Veit Helm, Sebastian Beyer & Thomas Kleiner
Recovery Glacier reaches far into the East Antarctic Ice Sheet. Recent projections point out that its dynamic behaviour has a considerable impact on future Antarctic ice loss (Golledge et al. 2017). Subglacial lakes are thought to play a major role in the initiation of the rapid ice flow (Bell et al. 2007). Satellite altimetry observations have even suggested several actively filling and draining subglacial lakes beneath the main trunk (Smith et al. 2009). We present...

Registration Year

  • 2018
    470

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  • Collection
    470

Affiliations

  • University of Iowa
    1