19 Works

Circum-Arctic distribution of chemical anti-herbivore compounds arctic shrubs

Elin Lindén, Mariska Te Beest, Ilka Abreu, Thomas Moritz, Maja Sundqvist, Isabel C Barrio, Julia Boike, John Bryant, Kari Anne Bråthen, Agata Buchwal, Guillermo Bueno, Alain Cuerrier, Dagmar Egelkraut, Bruce Forbes, Martin Hallinger, Monique Heijmans, Luise Hermanutz, David S Hik, Annika Hofgaard, Milena Holmgren, Diane C Huebner, Toke Hoye, Ingibjörg Jónsdóttir, Elina Kaarlejärvi, Emilie Kissler … & Johan Olofsson
Spatial variation in plant chemical defence towards herbivores can help us understand variation in herbivore top-down control of shrubs in the Arctic and possibly also shrub responses to global warming. Less defended, non-resinous shrubs could be more influenced by herbivores than more defended, resinous shrubs. However, sparse field measurements limit our current understanding of how much of the circum-Arctic variation in defence compounds is explained by taxa or defence functional groups (resinous/non-resinous). We measured circum-Arctic...

BEDMAP2 - Ice thickness, bed and surface elevation for Antarctica - standardised data points

Peter Fretwell, Alice Fremand, Julien Bodart, Hamish Pritchard, David Vaughan, Jonathan Bamber, N. Barrand, R.E. Bell, C Bianchi, Robert Bingham, Donald Blankenship, G. Casassa, Ginny Catania, D. Callens, H Conway, Alison Cook, Hugh Corr, D Damaske, V. Damn, Fausto Ferraccioli, Rene Forsberg, S. Fujita, Y. Gim, P. Gogineni, J. Griggs … & A. Zirizzotti
We present here the Bedmap2 ice thickness, bed and surface elevation standardised CSV data points that were used to create the Bedmap2 gridding products. The data consists of 25 million points coming from 68 individual surveys acquired in Antarctica. The associated datasets consist of: - Bedmap1 standardised CSV data points: https://doi.org/10.5285/f64815ec-4077-4432-9f55-0ce230f46029 - Bedmap3 standardised CSV data points: https://doi.org/10.5285/91523ff9-d621-46b3-87f7-ffb6efcd1847 - Bedmap2 statistically-summarised data points (shapefiles): https://doi.org/10.5285/0f90d926-99ce-43c9-b536-0c7791d1728b - Bedmap2 gridding products: https://doi.org/10.5285/fa5d606c-dc95-47ee-9016-7a82e446f2f2 This work is supported by...

Ku- and Ka-band polarimetric radar backscatter of Arctic sea ice between October 2019 and September 2020 - VERSION 2.0

Julienne Stroeve, Vishnu Nandan, Rasmus Tonboe, Stefan Hendricks, Robert Ricker & Gunnar Spreen
This data set provides processed Ku- and Ka-band fully-polarimetric backscatter and derived polarimetric parameters from hourly scans, acquired using the KuKa radar, during Legs 1, 2, 4 and 5 of the 2019-2020 MOSAiC International Arctic Drift Expedition. Scans were acquired during winter (Legs 1 and 2), advanced melt (Leg 4) and freeze-up (Leg 5) seasons, from various Remote Sensing (RS) sites, located in the MOSAiC ice floe. The first deployment of the KuKa radar was...

Data from: Data-driven bioregionalization: A seascape-scale study of macrobenthic communities in the Eurasian Arctic

Dmitrii Pantiukhin, Dieter Piepenburg, Miriam L. S. Hansen & Casper Kraan
Aim: We conduct the first model-based assessment of the biogeographical subdivision of Eurasian Arctic seas to (1) delineate spatial distribution and boundaries of macrobenthic communities on a seascape level; (2) assess the significance of environmental drivers of macrobenthic community structures; (3) compare our modelling results to historical biogeographical classifications; and (4) couple the model to climate-change scenarios of environmental changes to project potential shifts in the distribution and composition of macrobenthic communities by 2100. Location:...

Data for: Transformation of dissolved organic matter by two Indo-Pacific sponges

Tabea Hildebrand, Helena Osterholz, Carina Bunse, Hendrik Grotheer, Thorsten Dittmar & Peter J. Schupp
Dissolved organic matter (DOM) is the largest organic carbon reservoir in the ocean and an integral component of biogeochemical cycles. The role of free-living microbes in DOM transformation has been studied thoroughly, whereas little attention has been directed towards the influence of benthic organisms. Sponges are efficient filter feeders and common inhabitants of many benthic communities circumglobally. In our study, we investigated how two tropical coral reef sponges shape marine DOM. We compared bacterial abundance,...

Data for: Interspecific competition and facilitation coexist in mixed-species bird flocks of montane coniferous forests in Taiwan

Chao-Chieh Chen, Chun-Chieh Liao & Bruno Andreas Walther
Besides competition, positive interactions also play an important role in shaping the social structure of mixed-species bird flocks. This study aimed to illuminate the interspecific interactions of competition and facilitation in mixed-species bird flocks. We recorded the foraging behavior and microhabitat use of flocking species in montane coniferous forests of Taiwan under different social contexts. Foraging niche breadth and niche-overlap with other flocking species were compared between individuals inside and outside of mixed flocks. For...

High-resolution bathymetry model for the Lena Delta region

Matthias Fuchs, Juri Palmtag, Bennet Juhls, Pier Paul Overduin, Guido Grosse, Ahmed Abdelwahab, Michael Bedington, Tina Sanders, Olga Ogneva, Irina V Fedorova, Nikita S Zimov, Paul James Mann & Jens Strauss
This data set includes the 50 m and 200 m bathymetry model for the Lena Delta region covering 232,700 km2 stretching from Cape Mamontov Klyk in the western Laptev Sea to Kotelny Island in the New Siberian Islands. The models were calculated with the topo to raster tool in ArcGIS TM version 10.6 based on depth points and isobaths lines derived from large-scale current and historical nautical maps.The final bathymetry models are available in GeoTiff...

BEDMAP2 - Ice thickness, bed and surface elevation for Antarctica - standardised shapefiles and geopackages

Peter Fretwell, Hamish Pritchard, David Vaughan, Jonathan Bamber, N. Barrand, R.E. Bell, C Bianchi, Robert Bingham, Donald Blankenship, G. Casassa, Ginny Catania, D. Callens, H Conway, Alison Cook, Hugh Corr, D Damaske, V. Damn, Fausto Ferraccioli, Rene Forsberg, S. Fujita, Y. Gim, P. Gogineni, J. Griggs, Richard Hindmarsh, P. Holmlund … & Julien Bodart
We present here the Bedmap2 ice thickness, bed and surface elevation aggregated points and survey lines. The aggregated points consist of statistically-summarised shapefile points (centred on a continent-wide 500 m x 500 m grid) that reports the average values of ice thickness, bed and surface elevation from the full-resolution survey data and information on their distribution. The points presented here correspond to the additional points to Bedmap1 used for the gridding of Bedmap2. The data...

Humpback whale song comparison for the Atlantic sector of the Southern Ocean

Elena Schall, Divna Djokic, Erin Ross-Marsh, Javier Oña, Judith Denkinger, Julio Ernesto Baumgarten, Linilson Rodrigues Padovese, Marcos R. Rossi-Santos, Maria Isabel Carvalho Goncalves, Renata Santoro Sousa-Lima, Rodrigo Hucke-Gaete, Simon Elwen, Susannah Buchan, Tess Gridley & Ilse Van Opzeeland
The results of comparative song analyses between the ASSO and the Ecuadorian and Brazilian breeding populations and recordings from the Chilean, South African and Namibian migration routes revealed that individuals from at least three humpback whale breeding populations most likely migrate to shared feeding grounds in the ASSO. Humpback whales from different populations potentially mix at different times (i.e., years) at feeding hotspots of variable locations.

Diatoms and plants sedimentary ancient DNA from Lake Satagay (Central Yakutia, Siberia) covering the last 10,800 years

Izabella Baisheva, Luidmila Pestryakova, Ramesh Glückler, Ulrike Herzschuh & Kathleen R. Stoof-Leichsenring
Our dataset consists of two metabarcoding datasets (1) targeting diatoms (rbcL) and (2) targeting plant taxa (trnL P6 loop) retrieved from sedimentary ancient DNA (sedaDNA) of Lake Satagay, Central Yakutia, Siberia (N 63.07816°, E 117.99806°). SedaDNA data for diatoms comprises 65 samples (sequencing run number APMG-32), whereas 61 samples were analyzed for plants (sequencing run number APMG-33). We used sedaDNA of diatoms (APMG-32) and plants (data from APMG-33 restricted to aquatic plants) to reconstruct aquatic...

Fin whale tracks Elephant Island

Helena Herr, Leigh Hickmott, Sacha Viquerat & Simone Panigada
This data set comprises the the location data obtained via SPLASH LIMPET tags from four fin whales equipped with satellite transmitters at Elephant Island Antarctica in April / March 2021. Provided are the tag identifier (Ptt), transmitter model (instrument), the data and time of each recorded location, the satellite system used for transmission (type), a quality rating of the transmission (quality) as B, A, 0, 1, 2 or 3 in increasing order of position accuracy,...

BEDMAP3 - Ice thickness, bed and surface elevation for Antarctica - standardised data points

Alice Fremand, Peter Fretwell, Julien Bodart, Hamish Pritchard, A. Aitken, Jonathan Bamber, R.E. Bell, C Bianchi, Robert Bingham, Donald Blankenship, G. Casassa, Ginny Catania, K Christianson, H Conway, Hugh Corr, X. Cui, D Damaske, V. Damn, R. Drews, G. Eagles, O. Eisen, H. Eisermann, Fausto Ferraccioli, Rene Forsberg, S Franke … & A. Zirizzotti
We present here the Bedmap3 ice thickness, bed and surface elevation standardised CSV data points that are used to create the Bedmap3 gridding products in addition to the previous data releases. The data consists of 50 million points acquired by 17 different data providers in Antarctica. The associated datasets consist of: - Bedmap1 standardised CSV data points: https://doi.org/10.5285/f64815ec-4077-4432-9f55-0ce230f46029 - Bedmap2 standardised CSV data points: https://doi.org/10.5285/2fd95199-365e-4da1-ae26-3b6d48b3e6ac - Bedmap3 statistically-summarised data points (shapefiles): https://doi.org/10.5285/a72a50c6-a829-4e12-9f9a-5a683a1acc4a This work is...

Locations of micro-inclusions identified with Raman spectroscopy in eleven samples (138-1340 m) from the EastGRIP ice core

Nicolas Stoll, Ilka Weikusat & Jan Eichler
Micro-inclusions in eleven samples from the upper 1340 m of the East Greenland Ice Core Project ice core in North-East Greenland were analysed with Raman spectroscopy. Ice samples were drilled and processed between 2016 and 2019, Raman analysis was performed between January 2020 and December 2020 at the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research. The samples are between 1.0 and 14.1 ka yr old and cover the Holocene, Younger Dryas, and...

BEDMAP3 - Ice thickness, bed and surface elevation for Antarctica - standardised shapefiles and geopackages

Peter Fretwell, Hamish Pritchard, Alice Fremand, Julien Bodart, A. Aitken, Jonathan Bamber, R.E. Bell, C Bianchi, Robert Bingham, Donald Blankenship, G. Casassa, Ginny Catania, K Christianson, H Conway, Hugh Corr, X. Cui, D Damaske, V. Damn, R. Drews, G. Eagles, O. Eisen, H. Eisermann, F Ferraccioli, Rene Forsberg, S Franke … & A. Zirizzotti
We present here the Bedmap3 ice thickness, bed and surface elevation aggregated points and survey lines. The aggregated points consist of statistically-summarised shapefile points (centred on a continent-wide 500 m x 500 m grid) that reports the average values of Antarctic ice thickness, bed and surface elevation from the full-resolution survey data and information on their distribution. The points presented here correspond to the added points since the last release of Bedmap2. The data comes...

Greenland mass trends from airborne and satellite altimetry during 2011–2020

Shfaqat Abbas Khan, Jonathan L. Bamber, Eric Rignot, Veit Helm, Andy Aschwanden, David M. Holland, Michiel R. Van Den Broeke, Michalea King, Brice Noël, Martin Truffer, Angelika Humbert, William Colgan, Saurabh Vijay & Peter Kuipers Munneke
We use satellite and airborne altimetry to estimate annual mass changes of the Greenland Ice Sheet. We estimate ice loss corresponding to a sea-level rise of 6.9±0.4 millimeters from April 2011 to April 2020, with the highest annual ice loss rate of 1.4 mm/yr sea-level equivalent from April 2019 to April 2020. On a regional scale, our annual mass loss timeseries reveals 10-15 m/yr dynamic thickening at the terminus of Jakobshavn Isbræ from April 2016...

Accumulation rate of the B18_2012 firn core

Johannes Freitag, Sepp Kipfstuhl, Stefanie Weißbach, Nanna Bjørnholt Karlsson, Thomas Münch & Maria Hörhold
The annual accumulation rate in water equivalent depth was derived based on the density measurements and the dating.

Ancient sedimentary plant DNA dataset from Batagay (B17), Yakutia

Jérémy Courtin
Here we provide a dataset on genetic plant diversity retrieved from permafrost sedimentary ancient DNA (sedaDNA) of the Batagay megaslump, Yakutia. Our dataset encompasses sedaDNA sequence data of 10 sediment samples. We used a PCR-based metabarcoding approach combined with Next-Generation Sequencing to assess the past, local vegetation compositional changes around the megaslump. As a plant specific metabarcode we applied the established chloroplastidal P6 loop trnL marker for plant diversity assessment. PCR products were sequenced on...

High-resolution bathymetry model for the Kolyma Gulf region

Matthias Fuchs, Juri Palmtag, Bennet Juhls, Pier Paul Overduin, Guido Grosse, Ahmed Abdelwahab, Michael Bedington, Tina Sanders, Olga Ogneva, Irina V Fedorova, Nikita S Zimov, Paul James Mann & Jens Strauss
This data set includes the 50 m and 200 m bathymetry model for the Kolyma Gulf region covering an area of 12,100 km2 extending from the apex of the Kolyma Delta (5 km downstream of the city of Cherskiy) to 70 km offshore into the East Siberian Sea. The models were calculated with the topo to raster tool in ArcGIS TM version 10.6 based on depth points and isobaths lines derived from large-scale current and...

BEDMAP2 - Ice thickness, bed and surface elevation for Antarctica - gridding products

Peter Fretwell, Hamish Pritchard, David Vaughan, Jonathan Bamber, N. Barrand, R.E. Bell, C Bianchi, Robert Bingham, Donald Blankenship, G. Casassa, Ginny Catania, D. Callens, H Conway, Alison Cook, Hugh Corr, D Damaske, V. Damn, Fausto Ferraccioli, Rene Forsberg, S. Fujita, Y. Gim, P. Gogineni, J. Griggs, Richard Hindmarsh, P. Holmlund … & A. Zirizzotti
We present here Bedmap2 (2013), a suite of gridded products describing surface elevation, ice-thickness and the sea floor and subglacial bed elevation of the Antarctic south of 60deg S. We derived these products using data from a variety of sources, including many substantial surveys completed since the original Bedmap compilation (Bedmap1) in 2001. In particular, the Bedmap2 ice thickness grid is made from 25 million measurements, over two orders of magnitude more than were used...

Registration Year

  • 2022
    19

Resource Types

  • Dataset
    19

Affiliations

  • Alfred Wegener Institute for Polar and Marine Research
    8
  • University of Edinburgh
    6
  • Earth and Space Sciences, University of Washington
    5
  • Institute for Geophysics, Jackson School of Geosciences, University of Texas
    5
  • Istituto Nazionale di Geofisica e Vulcanologia
    5
  • NASA Wallops Flight Facility
    5
  • Centro de Estudios Cientificos
    5
  • NASA Goddard Space Flight Center
    5
  • Institute for Geology and Mineral Resources of the World Ocean
    5
  • Newcastle University
    5