468 Works

In-situ-common-garden-assays demonstrate increased chemical defense against natural fouling in non-native populations of an aquatic organism, supplement to: Wang, Shasha; Weinberger, Florian; Xiao, Luyang; Nakaoka, Masahiro; Wang, Gaoge; Krueger-Hadfield, Stacy A; Sotka, Erik E; Bian, Dapeng; Lenz, Mark (2017): In situ common garden assays demonstrate increased defense against natural fouling in non-native populations of the red seaweed Gracilaria vermiculophylla. Marine Biology, 164(10)

Shasha Wang, Florian Weinberger, Luyang Xiao, Masahiro Nakaoka, Gaoge Wang, Stacy A Krueger-Hadfield, Erik E Sotka, Dapeng Bian & Mark Lenz
The susceptibility of native and non-native populations of the red alga Gracilaria vermiculophylla to fouling was compared in common garden experiments. Native and non-native algae were enclosed into dialysis membrane tubes, and the tubes were exposed to natural fouling. Fouling on the outside of the tubes was mediated by chemical compounds excreted by G. vermiculophylla that diffused through the membranes. Fouling pressure was significantly higher in the Kiel Fjord (non-native range) than in Akkeshi Bay...

Species traits, habitat characteristics and spatial dynamics of birds on land-bridge islands, Thousand Island Lake, China

Chuanwu Chen, Marcel Holyoak, Xingfeng Si, Yanping Wang & Ping Ding
Many metacommunity studies have considered only static snapshots of community composition, and either classified systems into idealized metacommunity types or identified relationships between community composition and species traits and/or habitat or patch characteristics. By contrast, studies of the Equilibrium Theory of Island Biogeography have investigated how island area and isolation relate to dynamical turnover in species composition. A gap exists between static evaluations of community composition and the full consideration of the effects of species...

Aqueous arsenic, oxygen, temperature, and plankton arsenic content in urban lakes in the Puget Sound lowland from September 2015 to August 2016, supplement to: Barrett, Pamela M; Hull, Erin A; King, C E; Burkart, Kenneth A; Ott, K A; Ryan, J N; Gawel, James E; Neumann, Rebecca B (2018): Increased exposure of plankton to arsenic in contaminated weakly-stratified lakes. Science of the Total Environment, 625, 1606-1614

Pamela M Barrett, Rebecca B Neumann & James E Gawel
Angle Lake, Lake Killarney, North Lake, Steel Lake (western WA) were sampled monthly or bi-monthly from September 2015 to August 2016. Water column temperature and dissolved oxygen profiles were measured using a multi-parameter water quality probe (In-Situ smarTROLL MP) at approximately the deepest point in each lake. A peristaltic pump with acid-washed tubing was used to collect filtered (0.45 µm Geotech cartridge filter) water samples into acid-washed polypropylene bottles that were acidified with trace metal...

KOSMOS 2014 mesocosm study: Abundance and flux patterns of pelagic calcifiers (Foraminifera, Thecosomata) in response to ocean acidification during oligotrophic and simulated up-welling conditions in the subtropical North Atlantic off Gran Canaria, supplement to: Lischka, Silke; Stange, Paul; Riebesell, Ulf (2018): Response of Pelagic Calcifiers (Foraminifera, Thecosomata) to Ocean Acidification During Oligotrophic and Simulated Up-Welling Conditions in the Subtropical North Atlantic Off Gran Canaria. Frontiers in Marine Science, 5:379

Silke Lischka, Paul Stange & Ulf Riebesell
The present investigation was part of a large-scale in situ mesocosm experiment in the oligotrophic waters of the eastern subtropical North Atlantic. Over 62 days, we measured the abundance and vertical flux of pelagic foraminifers and thecosome pteropods as part of a natural plankton community over a range of OA scenarios. A bloom phase was initiated by the introduction of deep-water collected from approx. 650 m depth simulating a natural up-welling event. Foraminifers occurred throughout...

Detailed tritium data of 3 pits drilled at Vostok station, supplement to: Fourré, Elise; Landais, Amaelle; Cauquoin, Alexandre; Jean-Baptiste, Philippe; Lipenkov, Vladimir Ya; Petit, Jean-Robert (2018): Tritium Records to Trace Stratospheric Moisture Inputs in Antarctica. Journal of Geophysical Research: Atmospheres, 123(6), 3009-3018

Elise Fourré, Amaelle Landais, Alexandre Cauquoin, Philippe Jean-Baptiste, Vladimir Ya Lipenkov & Jean-Robert Petit
Better assessing the dynamic of stratosphere‐troposphere exchange is a key point to improve our understanding of the climate dynamic in the East Antarctica Plateau, a region where stratospheric inputs are expected to be important. Although tritium (³H or T), a nuclide naturally produced mainly in the stratosphere and rapidly entering the water cycle as HTO, seems a first‐rate tracer to study these processes, tritium data are very sparse in this region. We present the first...

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...

Strategies in times of crisis - insights into the benthic foraminiferal record of the Paleocene Eocene Thermal Maximum, supplement to: Schmidt, Daniela N; Thomas, Ellen; Authier, Elisabeth; Saunders, David; Ridgwell, Andy (2018): Strategies in times of crisis—insights into the benthic foraminiferal record of the Palaeocene–Eocene Thermal Maximum. Philosophical Transactions of the Royal Society A-Mathematical Physical and Engineering Sciences, 376(2130), 20170328

Daniela N Schmidt, Ellen Thomas, Elisabeth Authier, David Saunders & Andy Ridgwell
Climate change is predicted to alter temperature, carbonate chemistry, and oxygen availability in the oceans, which will affect individuals, populations and ecosystems. We use the fossil record of benthic foraminifers to assess developmental impacts in response to environmental changes during the Paleocene Eocene Thermal Maximum (PETM). Using an unprecedented number of µ-Computer Tomography scans, we determine size of the proloculus (first chamber), number of chambers, and final size of two benthic foraminiferal species which survived...

Microfossil counts, sea-surface temperature estimates and quartz grain sizes in the deep-sea core FR1/94-GC3, East Tasman Plateau, Australia, supplement to: De Deckker, Patrick; Barrows, Timothy T; Stuut, Jan-Berend W; van der Kaars, Sander; Ayress, M A; Rogers, John; Chaproniere, George C H (2019): Land-sea correlations in the Australian region: 460k years of changes recorded in a deep-sea core offshore Tasmania. Part 2: the marine compared with the terrestrial record. Australian Journal of Earth Sciences, 66(1), 17-36

Patrick De Deckker, Timothy T Barrows, Jan-Berend W Stuut, Sander van der Kaars, M A Ayress, John Rogers & George C H Chaproniere
We present an array of new proxy data and review existing ones from core Fr1/94-GC3 from the East Tasman Plateau. This core is positioned at the southern extreme of the East Australia Current and simultaneously records changes in both oceanography and environments both offshore and in southeastern Australia. Microfossils, including planktonic and benthic foraminifera, ostracods, coccoliths, and radiolarians, were studied to interpret palaeoceanographic changes. Sea-surface temperature was estimated using planktonic foraminifera, alkenones and radiolaria. From...

Water column nutrient and dissolved organic carbon concentrations, dissolved organic matter characteristics and bacterial abundance in three Baltic Sea estuaries, supplement to: Asmala, Eero; Kaartokallio, Hermanni; Carstensen, Jacob; Thomas, David N (2016): Variation in riverine inputs affect dissolved organic matter characteristics throughout the estuarine gradient. Frontiers in Marine Science, 2, 125

Eero Asmala, Hermanni Kaartokallio, Jacob Carstensen & David N Thomas
Terrestrial dissolved organic matter (DOM) undergoes significant changes during the estuarine transport from river mouths to the open sea. These include transformations and degradation by biological and chemical processes, but also the production of fresh organic matter. Since many of these processes occur simultaneously, properties of the DOM pool represent the net changes during the passage along the hydrological path. We examined changes in multiple DOM characteristics across three Finnish estuarine gradients during spring, summer...

Multiproxy set for sediment core KZR23, supplement to: Bayon, Germain; Schefuß, Enno; Dupont, Lydie M; Borges, Alberto Vieira; Dennielou, Bernard; Lambert, Thibault; Mollenhauer, Gesine; Monin, Laurence; Ponzevera, Emmanuel; Skonieczny, Charlotte; André, Luc (2019): The roles of climate and human land-use in the late Holocene rainforest crisis of Central Africa. Earth and Planetary Science Letters, 505, 30-41

Germain Bayon, Enno Schefuß, Lydie M Dupont, Alberto Vieira Borges, Bernard Dennielou, Thibault Lambert, Gesine Mollenhauer, Laurence Monin, Emmanuel Ponzevera, Charlotte Skonieczny & Luc André
There is increasing evidence that abrupt vegetation shifts and large-scale erosive phases occurred in Central Africa during the third millennium before present. Debate exists as to whether these events were caused by climate change and/or intensifying human activities related to the Bantu expansion. In this study, we report on a multi-proxy investigation of a sediment core (KZR-23) recovered from the Congo submarine canyon. Our aim was to reconstruct climate, erosion and vegetation patterns in the...

Effect of salinity and mechanical disturbance on the energy status and mitochondrial respiration of soft shell clam Mya arenaria, supplement to: Haider, Fouzia; Sokolov, Eugene; Sokolova, Inna M (2018): Effects of mechanical disturbance and salinity stress on bioenergetics and burrowing behavior of the soft-shell clam Mya arenaria. Journal of Experimental Biology, 221(4), jeb172643

Fouzia Haider, Inna M Sokolova & Eugene Sokolov
Bioturbation of sediments by burrowing organisms plays a key role in the functioning of coastal ecosystems. Burrowing is considered an energetically expensive activity, yet the energy costs of burrowing and the potential impacts of multiple stressors (such as salinity stress and wave action) on bioenergetics and burrowing performance of marine bioturbators are not well understood. We investigated the effects of mechanical disturbance and salinity stress on the burrowing behavior, aerobic capacity and energy expense of...

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...

A chemical, crystallographic and magnetic characterisation of individual iron-oxide grains in Hawaiian lavas, supplement to: ter Maat, Geertje W; Pennock, Gillian M; de Groot, Lennart V (2018): A chemical, crystallographic and magnetic characterisation of individual iron-oxide grains in Hawaiian lavas. Scientific Data, 5, 180162

Geertje W ter Maat, Gillian M Pennock & Lennart V de Groot
Our knowledge on the behaviour of the geomagnetic field through time critically depends on how information of the past state of the field is recorded by, and stored in iron-bearing minerals such as magnetite. For small, single domain grains these processes are described by classical Néel theory, but the magnetic behaviour of larger, pseudo-single domain or multidomain grains, still is enigmatic. Here we present a chemical, crystallographic and magnetic characterisation of three to six individual,...

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...

Assessment of wet mass, dry mass, ash mass, ash free dry mass, carbon content and nitrogen content of selected coastal bird species and harbor seal tissues, supplement to: Horn, Sabine; de la Vega, Camille (2016): Relationships between fresh weight, dry weight, ash free dry weight, carbon and nitrogen content for selected vertebrates. Journal of Experimental Marine Biology and Ecology, 481, 41-48

Sabine Horn & Camille de la Vega
Top predators are relevant indicators of the ecological status of a system and can have a high impact on food webs. But top predators are difficult to include in network analyses because their biomass in ash free dry weight or carbon content is missing. Regression equations were determined for the relationships between fresh weight and dry weight, ash free dry weight, carbon and nitrogen contents respectively for six of the most abundant bird species in...

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...

Copepod community ingestion and respiration in the Eastern Atlantic Ocean during POLARSTERN cruise PS81 (ANT-XXIX/1), supplement to: Bode, Maya; Koppelmann, Rolf; Teuber, Lena; Hagen, Wilhelm; Auel, Holger (2018): Carbon Budgets of Mesozooplankton Copepod Communities in the Eastern Atlantic Ocean-Regional and Vertical Patterns Between 24°N and 21°S. Global Biogeochemical Cycles, 32(5), 840-857

Maya Bode, Rolf Koppelmann, Lena Teuber, Wilhelm Hagen & Holger Auel
The copepods' impact on vertical carbon flux was assessed for stratified depth layers down to 2000 m at six stations along a transect between 24°N and 21°S in the eastern Atlantic Ocean in October/November 2012. Total copepod community consumption ranged from 202-604 mg C m⁻² day⁻¹, with highest ingestion rates in the tropical North Atlantic. Calanoids consumed 75-90% of the particulate organic carbon (POC) ingested by copepods, although the relative contribution of cyclopoids (mostly Oncaeidae)...

Benthic foraminifera (percentages and fluxes), benthic stable oxygen and carbon isotope and IRD data of sediment core JM07-015, supplement to: Telesiński, Maciej Mateusz; Przytarska, Joanna E; Sternal, Beata; Forwick, Matthias; Szczuciński, Witold; Łącka, Magdalena; Zajączkowski, Marek (2018): Palaeoceanographic evolution of the SW Svalbard shelf over the last 14 000 years. Boreas, 47(2), 410-422

Maciej Mateusz Telesiński, Joanna E Przytarska, Beata Sternal, Matthias Forwick, Witold Szczuciński, Magdalena Łącka & Marek Zajączkowski
The palaeoceanographic evolution of the SW Svalbard shelf west of Hornsund over the last 14 000 years was reconstructed using benthic foraminiferal assemblages, stable oxygen and carbon isotopes, and grain-size and ice-rafted debris data. The results reveal the complexity of the feedbacks influencing the shelf environment: the inflow of Atlantic and Arctic waters (AWandArW, respectively), and the influence of sea ice and tidewater glaciers. The inflow of subsurface AW onto the shelf gradually increased with...

Ostracode abundance, faunal composition, and species diversity during the last 15,000 years in sediment core BJ8-03-70GGC, supplement to: Iwatani, Hokuto; Yasuhara, Moriaki; Rosenthal, Yair; Linsley, Braddock K (2018): Intermediate-water dynamics and ocean ventilation effects on the Indonesian Throughflow during the past 15,000 years: Ostracod evidence. Geology

Hokuto Iwatani, Moriaki Yasuhara, Yair Rosenthal & Braddock K Linsley
The Indonesian Throughflow (ITF) is thought to influence thermohaline circulation dynamics and is important for understanding global climate and the marine ecosystem. The physical and chemical properties of North Pacific Intermediate Water (NPIW) and the underlying deep water incorporated into the ITF appear to be the result of climate-related preconditioning in the North and South Pacific. Thus, these high-latitude source waters play an important role in the Indo-Pacific oceanography. Here, we present the results of...

Geomagnetic data from the astronomical observatory of Madrid (1879-1901), supplement to: Pro, C; Vaquero, José Manuel; Merino-Pizarro, D (2018): Early geomagnetic data from the Astronomical Observatory of Madrid (1879-1901). Geoscience Data Journal, 5(2), 87-93

C Pro, José Manuel Vaquero & D Merino-Pizarro
The recovery of early geomagnetic data is essential to improve knowledge of the evolution of the geomagnetic field. A recently recovered dataset is described that includes mean decadal (ten day) values of the geomagnetic declination and some disperse values of geomagnetic inclination measured at the Astronomical Observatory of Madrid from 1879 to 1901. These recovered data are compared directly with the results obtained from a geomagnetic model. The data have now been made accessible for...

Deglacial planktic foraminiferal boron isotope and Mg/Ca data from sediment core MD01-2416 in the western North Pacific Ocean, supplement to: Gray, William R; Rae, James W B; Wills, Robert C J; Shevenell, Amelia E; Taylor, Ben J; Burke, Andrea; Foster, Gavin L; Lear, Caroline H (2018): Deglacial upwelling, productivity and CO2 outgassing in the North Pacific Ocean. Nature Geoscience

William R Gray, James W B Rae, Robert C J Wills, Amelia E Shevenell, Ben J Taylor, Andrea Burke, Gavin L Foster & Caroline H Lear
Boron isotopes and Mg/Ca measured on planktic foraminifera N. pachyderma from deglacial sediments of core MD01-2416, located in the western subpolar North Pacific. Includes calculated pH, pCO2 and sea surface temperature estimates.

Foraminifera and wood 14C (radiocarbon) in Northeast Pacific for past 30,000 years, supplement to: Rafter, Patrick A; Herguera, Juan-Carlos; Southon, John R (2018): Extreme lowering of deglacial seawater radiocarbon recorded by both epifaunal and infaunal benthic foraminifera in a wood-dated sediment core. Climate of the Past, 14(12), 1977-1989

Patrick A Rafter, Juan-Carlos Herguera & John R Southon
For over a decade, oceanographers have debated the interpretation and reliability of sediment microfossil records indicating extremely low seawater radiocarbon (14C) during the last deglaciation-observations that suggest a major disruption in marine carbon cycling coincident with rising atmospheric CO2 concentrations. Possible flaws in these records include poor age model controls, utilization of mixed, infaunal foraminifera species possibly influenced by changing porewater chemistry, and bioturbation. We have addressed these concerns using a glacial-interglacial record of epifaunal...

Methane concentration and stable isotope ratios in seawater and sea ice, Utqiagvik shelf, Alaska, supplement to: Uhlig, Christiane; Kirkpatrick, John B; d'Hondt, Steven L; Loose, Brice (2018): Methane-oxidizing seawater microbial communities from an Arctic shelf. Biogeosciences, 15, 3311-3329

Christiane Uhlig, John B Kirkpatrick & Brice Loose
Arctic seawater was collected at two sites close to Utqiagvik, North Slope, Alaska on 7, 9, 11 and 15 April 2016 in the Beaufort Sea. Site "Elson Lagoon" (EL) was located North of Utqiagvik (7.4.2016, 71.334° N, -156.363° W), covered with 1.5 m thick sea ice and shallow with approximately 1.5 m depth. Water was collected from a depth of 1.5 m in a narrow layer of water between the sea ice and the sediment....

Chemical composition and formula of apatites from theTrês Estradas Carbonatite

Henrique De Maman Anzolin
These tables shows the results obtained by electron microprope analysis of apatites from the Três Estradas Carbonatite. The four types of apatite identified associated with the carbonatite were analysed using a Cameca ®SXfive equipment to determine the chemistry of different types of apatite, whose results are arranged in the table Electron Microprope Results. The data was used to calculate the chemical formula, showed in the table Chemical Formula. The CO3 value showed in the median...

Registration Year

  • 2018

Resource Types

  • Collection


  • University of Iowa