22 Works

Humpback whale acoustic presence in the Atlantic sector of the Southern Ocean

Elena Schall, Karolin Thomisch, Olaf Boebel, Gabriele Gerlach, Ilse Van Opzeeland, Stefanie Spiesecke & Sari Mangia Woods
In the Atlantic Sector of the Southern Ocean (ASSO), the investigation of baleen whale distribution by sighting surveys is temporally restricted to the austral summer. The implementation of autonomous passive acoustic monitoring, in turn, allows studying vocal baleen whales year-round. This study describes the results of analyzing passive acoustic data spanning 12 recording positions throughout the ASSO applying a combination of automatic and manual analysis methods to register humpback whale acoustic activity. Humpback whales were...

Cross-continental analysis of coastal biodiversity change

Helmut Hillebrand, Gavin M. Rishworth, Janine B. Adams, Matthew S. Bird, Nicola K. Carrasco, Andreas Dänhardt, Jennifer Dannheim, Daniel A. Lemley, Pierre A. Pistorius & Gregor Scheiffarth
Whereas the anthropogenic impact on marine biodiversity is undebated, the quantification and prediction of this change is not trivial. Simple traditional measures of biodiversity (e.g., richness, diversity indices) do not capture the magnitude and direction of changes in species or functional composition. In this paper, we apply recently developed methods for measuring biodiversity turnover to time-series data of four broad taxonomic groups from two coastal regions: the southern North Sea (Germany) and the South African...

Heat stress responses of the kelp Laminaria digitata (Phaeophyceae) across Northeast Atlantic populations: growth, biochemistry, chlorophyll fluorescence, pigments

Daniel Liesner, Louise Fouqueau, Myriam Valero, Michael Y. Roleda, Gareth A. Pearson, Kai Bischof, Klaus Valentin & Inka Bartsch
To understand the thermal plasticity of a coastal foundation species across its latitudinal distribution, we assess physiological responses to high temperature stress in the kelp Laminaria digitata in combination with population genetic characteristics and relate heat resilience to genetic features and phylogeography. We hypothesize that populations from Arctic and cold-temperate locations are less heat resilient than populations from warm distributional edges. Using meristems of natural L. digitata populations from six locations ranging between Kongsfjorden, Spitsbergen...

Data from: The history of tree and shrub taxa on Bol'shoy Lyakhovsky Island (New Siberian Archipelago) since the last interglacial uncovered by sedimentary ancient DNA and pollen data

Heike H. Zimmermann, Elena Raschke, Laura S. Epp, Kathleen R. Stoof-Leichsenring, Lutz Schirrmeister, Georg Schwamborn & Ulrike Herzschuh
Ecosystem boundaries, such as the Arctic-Boreal treeline, are strongly coupled with climate and were spatially highly dynamic during past glacial-interglacial cycles. Only a few studies cover vegetation changes since the last interglacial, as most of the former landscapes are inundated and difficult to access. Using pollen analysis and sedimentary ancient DNA (sedaDNA) metabarcoding, we reveal vegetation changes on Bol’shoy Lyakhovsky Island since the last interglacial from permafrost sediments. Last interglacial samples depict high levels of...

Plant DNA metabarcoding records from three cores of lacustrine lakes along a open larch forest-forest tundra-tundra transect at the Omoloy region, north-eastern Siberia

Sisi Liu, Kathleen R. Stoof-Leichsenring, Stefan Kruse, Luidmila A. Pestryakova & Ulrike Herzschuh
Here, we provide the raw plant DNA metabarcoding data archived in three Siberian lake sediment cores spanning the mid-Holocene to the present (7.6-0 cal ka BP), from northern typical tundra to southern open larch forest in the Omoloy region. There are three cores: 14-OM-20B, Lat. / °: 70.53, Lon. / °: 132.91, Ele. / m a.s.l.: 52, Modern vegetation: open larch forest, Lake area / km2: 0.26, Maximal depth / m: 3.4 14-OM-02B, Lat. /...

Toolik Lake Research Natural Area AISA-Eagle hyperspectral Mosaic. An EnMAP Preparatory Flight Campaign

Alison Beamish, Sabine Chabrillat, Maximilian Brell, Birgit Heim & Torsten Sachs
EnMAP Flight Campaigns Technical Reports

Wie beeinflusst der Klimawandel den Jetstream?

Ralf Jaiser & Jana Kandarr
Die Arktis erwärmt sich schneller als der Rest der Welt. Damit verringert sich der Temperaturunterschied zwischen Äquator, gemäßigten Breiten auf der einen und Arktis auf der anderen Seite. Dieser Unterschied treibt jedoch das starke Westwindband der Nordhalbkugel an und bestimmt dessen Bahnen und Stärke mit. Der sogenannte Polar-Front-Jetstream hat große Bedeutung für unser Wetter in Deutschland.

What Peer-review Experiences Can Offer To Early Career Scientists And To The Scientific Community

Gwenaëlle Gremion, Mathieu Casado, Kelsey Aho, Jilda Alicia Caccavo, Nicolas Champollion, Emily Choy, Sarah L. Connors, Rahul Dey, Alfonso Fernandez, Gerlis Fugmann, Juan Höfer, Shridhar Jawak, Martine Lizotte, Sarah Maes, Kyle Mayers, Katja Mintenbeck, Jhon Fredy Mojica Moncada, Prashant H. Pandit, Elvira Poloczanska, Paul Rosenbaum, Elisa Seyboth, Sarah Shakil & Maud van Soest

Data from: Curation: heat stress responses and population genetics of the kelp Laminaria digitata (Phaeophyceae) across latitudes reveal differentiation among North Atlantic populations

Louise Fouqueau, Daniel Liesner, Myriam Valero, Michael Roleda, Gareth Pearson, Kai Bischof, Klaus Valentin & Inka Bartsch
We aim to understand the thermal plasticity of a coastal foundation species across its latitudinal distribution by assessing physiological responses to high temperature stress in the kelp Laminaria digitata in combination with population genetic characteristics. We hypothesize that Arctic and cold-temperate populations are less heat resilient than warm-temperate populations. Using meristems of natural L. digitata populations from six locations ranging between Kongsfjorden, Spitsbergen (79°N), and Quiberon, France (47°N), we performed a common-garden heat stress experiment...

Data from: Spatial structuring and life history connectivity of Antarctic silverfish along the southern continental shelf of the Weddell Sea

Jilda Alicia Caccavo, Julian R. Ashford, Svenja Ryan, Chiara Papetti, Michael Schröder & Lorenzo Zane
A multidisciplinary approach was employed to examine a physical-biological population hypothesis for a critical forage species, the Antarctic silverfish (Pleuragramma antarctica). A previous study had shown strong gene flow along the westward Antarctic Slope Current, in addition to spatially recurring length modes that provided evidence for episodic connectivity. In this paper, otolith nucleus chemistry from a subset of fish collected in the southern Weddell Sea as part of a hydrographic survey of the Filchner Trough...

Plant diversity data from modern sedimentary DNA of lakes in Siberia and China

Kathleen R. Stoof-Leichsenring, Sisi Liu, Weihan Jia, Kai Li, Luidmila A. Pestryakova, Steffen Mischke, Xianyong Cao, Xinqui Liu, Jian Ni, Stefan Neuhaus & Ulrike Herzschuh
Here we provide a large dataset on genetic plant diversity retrieved from surface sedimentary DNA (sedDNA) of lakes from Siberia and China spanning over a large environmental gradient. Our dataset encompasses sedDNA sequence data of 244 surface lake sediments and 3 soil samples originating from Siberia and Chinese lakes. We used a PCR-based metabarcoding approach combined with Next-Generation Sequencing to assess the modern and local plant diversity in and around the analysed lake localities. As...

Marine stepping-stones: Connectivity of Mytilus edulis populations between offshore energy installations

Joop W.P. Coolen, Arjen R. Boon, Richard Crooijmans, Hilde Van Pelt, Frank Kleissen, Daan Gerla, Jan Beermann, Silvana N.R. Birchenough, Lisa E. Becking & Pieternella C. Luttikhuizen
Recent papers postulate that epifaunal organisms use artificial structures as stepping-stones to spread to areas that are too distant to reach in a single generation. With thousands of artificial structures present in the North Sea, we test the hypothesis that these structures are connected by water currents and act as an interconnected reef. Population genetic structure of the Blue mussel, Mytilus edulis was expected to follow a pattern predicted by particle tracking models (PTM). Correlation...

Diatom sedimentary ancient DNA metabarcoding from western Fram Strait and Kronotsky Peninsula

Heike Zimmermann, Kathleen R. Stoof-Leichsenring, Stefan Kruse, Juliane Müller, Ruediger Stein, Ralf Tiedemann & Ulrike Herzschuh
In this study we use sedimentary ancient DNA metabarcoding from two marine sediment cores. The first Kastenlot core MSM05/5-712-2 was taken at western Fram Strait (subarctic North Atlantic) from which we collected 12 samples including one biological replicate. The second Kastenlot core SO201-2-12KL was retrieved from Kamchatka Strait (subarctic North Pacific) from which we collected 9 samples and 2 samples were collected from a pilot core taken next to the Kastenlot core. Total DNA was...

Det tør!: Frozen-Ground Cartoons; Et international samarbejde mellem kunstnere og permafrostforskere

Heta Nääs, Noémie Ross, Frédéric Bouchard, Michelle Paquette, Audrey Veillette, Michael Fritz, Stefanie Weege, Julie Malenfant-Lepage, Bethany Deshpande, Alexander Nieuwendam, Ashley Rudy, Matthias Siewert, Ylva Sjöberg, Jonathan Harbor, J. Otto Habeck, Kerstin Krøier Rasmussen & Kirstey Langley
This project started in October 2015 with a crazy idea : prepare and submit a funding application for an international, multidisciplinary and non-traditional scientific outreach project… within the next 48 hours. Well, it worked out. A group of highly motivated young researchers from Canada and Europe united to combine arts and science and produce a series of outreach comic strips about permafrost (frozen ground). The aim of the project is to present and explain scientific...

Marine Supervulkane und deren Auswirkungen in der Erdgeschichte

Jörg Geldmacher, Reinhard Werner, Folkmar Hauff & Gabriele Uenzelmann-Neben
Millionen von Quadratkilometern im Meer sind bedeckt von gigantischen Lavaschichten. Sie sind das Resultat des Flutbasalt-Vulkanismus. Dabei entstand vulkanisches Gestein, welches auch zur Entfernung von CO2 aus der Atmosphäre beitragen kann. Erdgeschichtlich führte dieser Vulkanismus jedoch immer wieder zum Massenaussterben von Arten.

Southern elephant seals (Mirounga leonina L.) in the Antarctic Treaty Area

Marthán Bester, Horst Bornemann, Gustavo A. Daneri & John van den Hoff
Despite the wholesale slaughter of southern elephant seals for the commercial extraction of blubber-oil during the mid and late 1800’s, their populations have persisted at almost all historical breeding locations There are presently an estimated 749,000 southern elephant seals in the Southern Ocean, about 2% (14,500) of which live permanently in the Antarctic Treaty Area south of 60º South Although these southernmost permanent breeding populations are relatively small, a large (yet to be determined) proportion...

Manganknollen-Abbau gefährdet die Ökosysteme der Tiefsee

Felix Janßen, Tobias Reiner Vonnahme & Matthias Haeckel
Die Versorgung der globalen Wirtschaft mit Metallen für Hightech-Produkte könnte auch vom Tiefseebergbau abhängen. Das ist aber problematisch.

Permafrost erwärmt sich mit alarmierender Geschwindigkeit

Stuart Vyse & Boris Biskaborn
Weltweit stiegen die Temperaturen im Permafrost um durchschnittlich 0,30 °C zwischen 2007 bis 2016, dies vor allem im Norden Russlands. Die Erwärmung des Permafrosts hat drastische Folgen für das globale Klima, aber auch für die Infrastruktur in der Arktis und das Auskommen der vier Millionen dort lebenden Menschen.

Frozen verses: Antarctic minke whales (Balaenoptera bonaerensis) call predominantly during austral winter --data_minke

Diego Filun
The recent identification of the bio-duck call as Antarctic minke whale (AMW) vocalization allows the use of passive acoustic monitoring to retrospectively investigate year-round spatial- temporal patterns in minke whale occurrence in ice-covered areas. Here, we present an analysis of AMW occurrence patterns based on a 9-year passive acoustic dataset (2008– 2016) from 21 locations throughout the Atlantic sector of the Southern Ocean (Weddell Sea). AMWs were detected acoustically at all mooring locations from May...

Data for: Sedimentary ancient DNA and pollen reveal the composition of plant organic matter in Late Quaternary permafrost sediments of the Buor Khaya Peninsula (north-eastern Siberia)

Heike Zimmermann, Elena Raschke, Laura S. Epp, Kathleen R. Stoof-Leichsenring, Georg Schwamborn, Lutz Schirrmeister, Pier Paul Overduin & Ulrike Herzschuh
Organic matter deposited in ancient, ice-rich permafrost sediments is vulnerable to climate change and may contribute to the future release of greenhouse gases; it is thus important to get a better characterization of the plant organic matter within such sediments. From a Late Quaternary permafrost sediment core from the Buor Khaya Peninsula, we analysed plant-derived sedimentary ancient DNA (sedaDNA) to identify the taxonomic composition of plant organic matter, and undertook palynological analysis to assess the...

Maternal and cohort effects modulate offspring responses to multiple stressors

Gabriela Torres, David Thomas, Nia Whiteley, David Wilcockson & Luis Gimenez
Current concerns about climate change has led to intensive research attempting to understand how climate driven stressors affect the performance of organisms, in particular on offspring of many invertebrate and fish. Although stressors are likely to act on several stages of the life cycle, little is known about their action across life phases, for instance how multiple stressors experienced simultaneously in the maternal environment can modulate the responses to the same stressors operating in the...

Along-shelf connectivity and circumpolar gene flow in Antarctic silverfish (Pleuragramma antarctica)

Jilda Alicia Caccavo, Chiara Papetti, , Rainer Knust, Julian R. Ashford & Lorenzo Zane
The Antarctic silverfish (Pleuragramma antarctica) is a critically important forage species with a circumpolar distribution and is unique among other notothenioid species for its wholly pelagic life cycle. Previous studies have provided mixed evidence of population structure over regional and circumpolar scales. The aim of the present study was to test the recent population hypothesis for Antarctic silverfish, which emphasizes the interplay between life history and hydrography in shaping connectivity. A total of 1067 individuals...

Registration Year

  • 2020
    22

Resource Types

  • Dataset
    14
  • Text
    8

Affiliations

  • Alfred Wegener Institute for Polar and Marine Research
    22
  • Helmholtz Association of German Research Centres
    3
  • University of Padua
    2
  • University of Algarve
    2
  • GEOMAR Helmholtz Centre for Ocean Research Kiel
    2
  • North-Eastern Federal University
    2
  • Carl von Ossietzky University of Oldenburg
    2
  • Roscoff Marine Station
    2
  • Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences
    2
  • Bernardino Rivadavia Natural Sciences Museum
    1