43,488 Works

Simulated change in atmospheric CO2 and D14C around 14.6 kyr BP, at the onset of the northern hemispheric warming into the Bølling/Allerød, supplement to: Köhler, Peter; Knorr, Gregor; Bard, Edouard (2014): Permafrost thawing as a possible source of abrupt carbon release at the onset of the Bølling/Allerød. Nature Communications, 5, 5520

Peter Köhler, Gregor Knorr & Edouard Bard
One of the most abrupt and yet unexplained past rises in atmospheric CO2 (10 p.p.m.v. in two centuries) occurred in quasi-synchrony with abrupt northern hemispheric warming into the Bølling/Allerød, 14,600 years ago. Here we use a U/Th-dated record of atmospheric D14C from Tahiti corals to provide an independent and precise age control for this CO2 rise. We also use model simulations to show that the release of old (nearly 14C-free) carbon can explain these changes...

Paleoproductivity reconstruction for the eastern equatorial Pacific, supplement to: Loubere, Paul; Fariduddin, Mohammad; Murray, Richard W (2003): Patterns of export production in the eastern equatorial Pacific over the past 130,000 years. Paleoceanography, 18(2), 1028

Paul Loubere, Mohammad Fariduddin & Richard W Murray
Productivity at six core locations in the eastern equatorial Pacific (EEP) was reconstructed with a benthic foraminiferal transfer function. The core records show strong regionality, especially where affected by Peru margin upwelling of deeper Equatorial Undercurrent Water (EUC) (originally coming from the subantarctic). This "Peru margin" record differs from that seen along the equator where divergence leads to shallow upwelling, and it is generally inverse to that seen in cores outside the areas of equatorial...

Biogeochemical investigation of cold seep sediments in the Eastern Mediterranean Sea, supplement to: Pop Ristova, Petra; Wenzhöfer, Frank; Ramette, Alban; Felden, Janine; Boetius, Antje (2014): Spatial scales of bacterial community diversity at cold seeps (Eastern Mediterranean Sea). The ISME Journal, 1-13

Petra Pop Ristova, Frank Wenzhöfer, Alban Ramette, Janine Felden & Antje Boetius
Cold seep ecosystems are highly productive, fragmented ecosystems of the deep-sea floor. They form worldwide where methane reaches the surface seafloor, and are characterized by rich chemosynthetic communities fueled by the microbial utilization of hydrocarbons. Here we investigated with in situ (benthic chamber, microprofiler) and ex situ (pore water constituents, turnover rates of sulfate and methane, prokaryote abundance) techniques reduced sites from three different seep ecosystems in the Eastern Mediterranean deep-sea. At all three cold...

A Compilation of Global Soil Microbial Biomass Carbon, Nitrogen, and Phosphorus Data

X. XU, P.E. THORNTON & P. POTAPOV
This data set provides the concentrations of soil microbial biomass carbon (C), nitrogen (N) and phosphorus (P), soil organic carbon, total nitrogen, and total phosphorus at biome and global scales. The data were compiled from a comprehensive survey of publications from the late 1970s to 2012 and include 3,422 data points from 315 papers. These data are from soil samples collected primarily at 0-15 cm depth with some from 0-30 cm. In addition, data were...

Multispectral and hyperspectral pansharpening

Gemine Vivone
2012-2013

A framework to access risks and derive requirements for a complex systems

Angela Vozella
2012-2013

The Sweden Count 2000

Margareta Skog
The data file belonging to this study contains information about participation in services and worships at approximately 5,900 congregations, corps and religious groups across Sweden during the weekend of 24 - 26 September 1999. The survey was sent to roughly 6,500 congregations, corps and groups and a response rate of around 90% was thus reached. Well over half a million participations were registered during the weekend, in communities spanning over Christianity, Judaism, Islam, Bahá'í, Hinduism,...

Opinions on Sweden and the European unification 1992

Lennart Brantgärde
Undersökningen innehåller delar av de frågeställningar - frågorna 6, 39, 40 och 55 - som ställdes i Eurobarometer 38.1 samt bakgrundsfrågor rörande partisympati, röstande i föregående val, placering på höger-vänsterskala, civilstånd, hushållets sammansättning, social klass, boende, religion, hushållsinkomst och utbildning.

Sampling sites, sampled birds and plants of young larch plantations in Tokachi district, eastern Hokkaido, northern Japan, 2011, supplement to: Yamaura, Yuichi; Connor, Edward F; Royle, J Andrew; Itoh, Katsuo; Sato, Kiyoshi; Taki, Hisatomo; Mishima, Yoshio (2016): Estimating species - area relationships by modeling abundance and frequency subject to incomplete sampling. Ecology and Evolution, 6(14), 4836-4848

Yuichi Yamaura
Models and data used to describe species-area relationships confound sampling with ecological process as they fail to acknowledge that estimates of species richness arise due to sampling. This compromises our ability to make ecological inferences from and about species-area relationships. We develop and illustrate hierarchical community models of abundance and frequency to estimate species richness. The models we propose separate sampling from ecological processes by explicitly accounting for the fact that sampled patches are seldom...

Previous Archaeological Excavations along the 'Ostlänken' Railway Corridor 1965-2012: Cup-mark rocks in Östra Malmskogen

UV Öst Swedish National Heritage Board
Cup-mark rocks in Östra Malmskogen

Color data, carbon and oxygen isotopes, and offsets from BBCP Polecat Bench cores 2A and 2B, supplement to: Bowen, Gabriel J; Maibauer, Bianca J; Kraus, Mary J; Röhl, Ursula; Westerhold, Thomas; Steimke, Amy; Gingerich, Philip D; Wing, Scott L; Clyde, William C (2014): Two massive, rapid releases of carbon during the onset of the Palaeocene–Eocene thermal maximum. Nature Geoscience

Gabriel J Bowen, Bianca J Maibauer, Mary J Kraus, Ursula Röhl, Thomas Westerhold, Amy Steimke, Philip D Gingerich, Scott L Wing & William C Clyde
The Earth's climate abruptly warmed by 5-8 °C during the Palaeocene-Eocene thermal maximum (PETM), about 55.5 million years ago**1,2. This warming was associated with a massive addition of carbon to the ocean-atmosphere system, but estimates of the Earth systemresponse to this perturbation are complicated by widely varying estimates of the duration of carbon release, which range from less than a year to tens of thousands of years. In addition the source of the carbon, and...

Radiocarbon dates, accumulation rates, δ¹³C and July temperature of profiles obtained from Selwyn and Misaw Lake, subarctic Canada, supplement to: Kaislahti Tillman, Päivi; Holzkämper, Steffen; Kuhry, Peter; Sannel, A Britta K; Loader, Neil J; Robertson, Iain (2010): Long-term climate variability in continental subarctic Canada: A 6200-year record derived from stable isotopes in peat. Palaeogeography, Palaeoclimatology, Palaeoecology, 298(3-4), 235-246

Päivi Kaislahti Tillman, Steffen Holzkämper, Peter Kuhry, A Britta K Sannel, Neil J Loader & Iain Robertson
The rapid warming of arctic regions during recent decades has been recorded by instrumental monitoring, but the natural climate variability in the past is still sparsely reconstructed across many areas. We have reconstructed past climate changes in subarctic west-central Canada. Stable carbon and oxygen isotope ratios (d13C, d18O) were derived from a single Sphagnum fuscum plant component; alpha-cellulose isolated from stems. Periods of warmer and cooler conditions identified in this region, described in terms of...

Establishment, expansion and regeneration of aspen (Populus tremula) in the Torneträsk area, subarctic Sweden, supplement to: Van Bogaert, Rik; Jonasson, Christer; De Dapper, Morgan; Callaghan, Terry V (2010): Range expansion of thermophilic aspen (Populus tremula L.) in the swedish Subarctic. Arctic, Antarctic, and Alpine Research, 42(3), 362-375

Rik Van Bogaert, Christer Jonasson, Morgan De Dapper & Terry V Callaghan
In subarctic Sweden, recent decadal colonization and expansion of aspen (Populus tremula L.) were recorded. Over the past 100 years, aspen became c. 16 times more abundant, mainly as a result of increased sexual regeneration. Moreover, aspen now reach tree-size (>2 m) at the alpine treeline, an ecotone that has been dominated by mountain birch (Betula pubescens ssp. czerepanovii) for at least the past 4000 years. We found that sexual regeneration in aspen probably occurred...

Integral Projection Models pack

Maria Paula Balcázar Vargas
This pack contains a workflow, a file and documentation (tutorial to run the workflow).The Integral Projection Model (IPM) Workflow provides an environment for create an integral projection model and to calculate its population growth, structure, sensitivities and elasticities analyses, age-specific metrics, etc.Create an IPM with no density dependence and perform several analyses on it.Analyses:Lambda (λ).Sensitivity analysis.Elasticity analysis.Parameters elasticity and sensitivity of LambdaParameters elasticity and sensitivity of RoParameters elasticity and sensitivity of Life ExpectancySurvivorshipMean Life expectancyPassage...

Water temperature, salinity, DOC content and THNS concentration in samples taken during POLARSTERN cruise to the Fram Strait and Greenland Sea, supplement to: Engbrodt, Ralph; Kattner, Gerhard (2005): On the biogeochemistry of dissolved carbohydrates in the Greenland Sea (Arctic). Organic Geochemistry, 36(6), 937-948

Ralph Engbrodt & Gerhard Kattner
Dissolved organic matter (DOM) was isolated with XAD-2 and 4 resins from different water masses of the Greenland Sea and Fram Strait. The contribution of XAD-extractable dissolved organic carbon (DOC), operationally defined as 'recalcitrant' or humic substances, to total DOC was in the range of 45 ± 9% in surface waters and 60 ± 6% in deep waters. The carbohydrate concentration and composition were determined using the l-tryptophan/sulfuric acid method (for the bulk carbohydrate concentration,...

Carbon and nitrogen isotopic composition of Early Toarcian sediments, supplement to: Jenkyns, Hugh C; Gröcke, Darren R; Hesselbo, Stephen P (2001): Nitrogen isotope evidence for water mass denitrification during the Early Toarcian (Jurassic) oceanic anoxic event. Paleoceanography, 16(6), 593-603

Hugh C Jenkyns, Darren R Gröcke & Stephen P Hesselbo
Bulk sedimentary nitrogen isotope (d15Ntot) data have been generated from Lower Jurassic black, carbon-rich shales in the British Isles and northern Italy deposited during the early Toarcian oceanic anoxic event. A pronounced positive d15Ntot excursion through the exaratum Subzone of the falciferum Zone (defined by characteristic ammonites in the British Isles) broadly correlates with a relative maximum in weight percent total organic carbon and, in some sections, with a negative d13Corg excursion. Upwelling of a...

Effects of Ocean Acidification on the Ballast of Surface Aggregates Sinking through the Twilight Zone, supplement to: Mendes, Pedro André; Thomsen, Laurenz (2012): Effects of Ocean Acidification on the Ballast of Surface Aggregates Sinking through the Twilight Zone. PLoS ONE, 7(12), e50865

Pedro André Mendes & Laurenz Thomsen
The dissolution of CaCO3 is one of the ways ocean acidification can, potentially, greatly affect the ballast of aggregates. A diminution of the ballast could reduce the settling speed of aggregates, resulting in a change in the carbon flux to the deep sea. This would mean lower amounts of more refractory organic matter reaching the ocean floor. This work aimed to determine the effect of ocean acidification on the ballast of sinking surface aggregates. Our...

Il processo di cambiamento nelle pubbliche amministrazioni e il percorso verso l'eccellenza: il caso del comune di Pisa

Concetta Stile
2011 - 2012

Fatto e diritto nel divenire dell'amministrazione globale dei principi di scienza nuova in G. B. Vico

Maria Dell'Anno
2012-2013

Biogenic and environmental fluctuations of temperature and pH in a novel mesocosm concept (\"Kiel Outdoor Benthocosms\") April 2013 to September 2014, supplement to: Wahl, Martin; Buchholz, Björn; Winde, Vera; Golomb, Dar; Guy-Haim, Tamar; Müller, Jens Daniel; Rilev, Gil; Scotti, Marco; Böttcher, Michael E (2015): A mesocosm concept for the simulation of shallow underwater climates: The Kiel Outdoor Benthocosms (KOB). Limnology and Oceanography-Methods, 13(11), 651–663

Martin Wahl, Björn Buchholz, Dar Golomb, Tamar Guy-Haim, Jens Daniel Müller, Gil Rilev, Vera Winde & Michael E Böttcher
The Kiel Outdoor Benthocosm infrastructure (Kiel, Germany,N 54°19.8'; E 010°09.0') allows combining natural in-situ fluctuations on all environmental variables with the controlled manipulation of treatment factors. The environmental fluctuations are admitted by a continuous flow-through of fjord water. The treatment is applied by delta-treatments which shift the mean of target variables (temperature and pH in this case) while maintaining the frequency and amplitude of natural fluctuations. The data presented here show the treatment levels and...

Osmium, and stable carbon and oxygen isotope record accross the PETM, supplement to: Ravizza, Gregory E; Norris, R N; Blusztajn, Jerzy S; Aubry, Marie-Pierre (2001): An osmium isotope excursion associated with the Late Paleocene thermal maximum: Evidence of intensified chemical weathering. Paleoceanography, 16(2), 155-163

Gregory E Ravizza, R N Norris, Jerzy S Blusztajn & Marie-Pierre Aubry
In the latest Paleocene an abrupt shift to more negative d13C values has been documented at numerous marine and terrestrial sites (Bralower et al., 1997, doi:10.1130/0091-7613(1997)025<0963:HRROTL>2.3.CO;2; Cramer et al., 1999; Kaiho et al., 1996, doi:10.1029/96PA01021; Kennett and Stott, 1991, doi:10.1038/353225a0; Koch et al., 1992, doi:10.1038/358319a0; Stott et al., 1996; Thomas and Shackleton, 1996, doi:10.1144/GSL.SP.1996.101.01.20; Zachos et al., 1993). This carbon isotope event (CIE) is coincident with oxygen isotope data that indicate warming of surface waters...

Dalla D.I.A. alla S.C.I.A.: nuovi percorsi dei rapporti tra pubblica amministrazione e cittadino

Serena Saltelli
2011 - 2012

Station characteristics and copepod fatty alcohol, fatty acid and lipid composition during MSM02/4 in Fram Strait, supplement to: Laakmann, Silke; Kochzius, Marc; Auel, Holger (2009): Ecological niches of Arctic deep-sea copepods: Vertical partitioning, dietary preferences and different trophic levels minimize inter-specific competition. Deep Sea Research Part I: Oceanographic Research Papers, 56(5), 741-756

Silke Laakmann, Marc Kochzius & Holger Auel
The biodiversity of pelagic deep-sea ecosystems has received growing scientific interest in the last decade, especially in the framework of international marine biodiversity initiatives, such as Census of Marine Life (CoML). While a growing number of deep-sea zooplankton species has been identified and genetically characterized, little information is available on the mechanisms minimizing inter-specific competition and thus allowing closely related species to co-occur in the deep-sea pelagic realm. Focussing on the two dominant calanoid copepod...

Spazio vissuto e spazio rappresentato

Rocco De Leo
2012-2013

Sample characteristics and pigment concentration of arctic snow and permafrost algal strains, supplement to: Leya, Thomas; Rahn, Andreas; Lütz, Cornelius; Ramias, Daniel (2009): Response of arctic snow and permafrost algae to high light and nitrogen stress by changes in pigment composition and applied aspects for biotechnology. FEMS Microbiology Ecology, 67(3), 432-443

Thomas Leya, Andreas Rahn, Cornelius Lütz & Daniel Ramias
Ten algal strains from snow and permafrost substrates were tested for their ability to produce secondary carotenoids and a-tocopherol in response to high light and decreased nitrogen levels. The Culture Collection of Cryophilic Algae at Fraunhofer IBMT in Potsdam served as the bioresource for this study. Eight of the strains belong to the Chlorophyceae and two strains are affiliated to the Trebouxiophyceae. While under low light, all 10 strains produced the normal spectrum of primary...

Registration Year

  • 2015
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Affiliations

  • Imperial College London
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