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  • ELSEVIER SCIENCE BV  (5)
  • WILEY-BLACKWELL PUBLISHING  (5)
  • Cham : Springer  (2)
  • ASSW 2017  (1)
  • 1
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    Integrating data science and earth Science : challenges and solutions (2022)
    Cham : Springer
    Details
    Call number: 978-3-030-99546-1 (e-book)
    Description / Table of Contents: Data Science and Earth System Science -- The Digital Earth project: focus and agenda -- Data analysis and exploration with visual approaches -- Data analysis and exploration with computational approaches -- Data analysis and exploration with scientific workflows -- The Digital Earth SMART monitoring concept and tools -- Interdisciplinary collaboration -- Evaluating the success of the Digital Earth project -- Lessons learned in the Digital Earth project.
    Description / Table of Contents: This open access book presents the results of three years collaboration between earth scientists and data scientist, in developing and applying data science methods for scientific discovery. The book will be highly beneficial for other researchers at senior and graduate level, interested in applying visual data exploration, computational approaches and scientifc workflows.
    Type of Medium: 12
    Pages: 1 Online-Ressource (XIV, 148 Seiten) , Illustrationen
    Edition: 1st ed. 2022.
    ISBN: 9783030995461
    Series Statement: SpringerBriefs in Earth System Sciences
    URL: kostenfrei
    DOI: 10.1007/978-3-030-99546-1
    Language: English
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  • 2
    Monograph available for loan
    Monograph available for loan
    Integrating data science and earth Science : challenges and solutions (2022)
    Cham : Springer
    Details Availability
    Call number: M 23.95066 1. Ex. ; M 23.95066 2.Ex.
    Description / Table of Contents: Data Science and Earth System Science -- The Digital Earth project: focus and agenda -- Data analysis and exploration with visual approaches -- Data analysis and exploration with computational approaches -- Data analysis and exploration with scientific workflows -- The Digital Earth SMART monitoring concept and tools -- Interdisciplinary collaboration -- Evaluating the success of the Digital Earth project -- Lessons learned in the Digital Earth project.
    Description / Table of Contents: This open access book presents the results of three years collaboration between earth scientists and data scientist, in developing and applying data science methods for scientific discovery. The book will be highly beneficial for other researchers at senior and graduate level, interested in applying visual data exploration, computational approaches and scientifc workflows.
    Type of Medium: Monograph available for loan
    Pages: XIV, 148 Seiten , Illustrationen
    ISBN: 9783030995454
    Series Statement: SpringerBriefs in Earth System Sciences
    Language: English
    Location: Upper compact magazine
    Location: Upper compact magazine
    Branch Library: GFZ Library
    Branch Library: GFZ Library
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  • 3
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    Deciphering patterns of adaptation and acclimation in the transcriptome of Phaeocystis antarctica to changing iron conditions (2020)
    WILEY-BLACKWELL PUBLISHING
    In:  EPIC3Journal of Phycology, WILEY-BLACKWELL PUBLISHING, ISSN: 0022-3646
    Details
    Publication Date: 2020-03-29
    Description: The haptophyte Phaeocystis antarctica is endemic to the Southern Ocean, where iron supply is sporadic and its availability limits primary production. In iron fertilization experiments, P. antarctica showed a prompt and steady increase in cell abundance compared to heavily silicified diatoms along with enhanced colony formation. Here we utilized a transcriptomic approach to investigate molecular responses to alleviation of iron limitation in P. antarctica. We analyzed the transcriptomic response before and after (14 h, 24 h, and 72 h) iron addition to a low-iron acclimated culture. After iron addition, we observed indicators of a quick reorganization of cellular energetics, from carbohydrate catabolism and mitochondrial energy production to anabolism. In addition to typical substitution responses from an iron-economic towards an iron-sufficient state for flavodoxin (ferredoxin) and plastocyanin (cytochrome c6 ), we found other genes utilizing the same strategy involved in nitrogen assimilation and fatty acid desaturation. Our results shed light on a number of adaptive mechanisms that P. antarctica uses under low iron, including the utilization of a Cu-dependent ferric reductase system and indication of mixotrophic growth. The gene expression patterns underpin P. antarctica as a quick responder to iron addition.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 4
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    Do drivers of biodiversity change differ in importance across marine and terrestrial systems—Or is it just different research communities' perspectives? (2017)
    ELSEVIER SCIENCE BV
    In:  EPIC3Science of The Total Environment, ELSEVIER SCIENCE BV, 574, pp. 193-203, ISSN: 0048-9697
    Details
    Publication Date: 2019-02-15
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 5
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    Temperature and light interactively modulate gene expression in Saccharina latissima (Phaeophyceae) (2014)
    WILEY-BLACKWELL PUBLISHING
    In:  EPIC3Journal of Phycology, WILEY-BLACKWELL PUBLISHING, ISSN: 0022-3646
    Details
    Publication Date: 2014-11-12
    Description: Macroalgae of the order Laminariales (kelp) are important components of cold-temperate coastal ecosystems. Major factors influencing their distribution are light including UV radiation and temperature. Therefore, future global environmental changes potentially will impact their zonation, distribution patterns, and primary productivity.Many physiological studies were performed on UV radiation and temperature stress in kelp but combinatory effects have not been analyzed and so far no study is available on the molecular processes involved in acclimation to these stresses. Therefore, sporophytes of Saccharina latissima were exposed for two weeks to 12 combinations of photosynthetically active radiation, UV radiation and temperature. Subsequently, microarray hybridizations were performed to determine changes in gene expression patterns. Several effects on the transcriptome were observed after exposure experiments. Strongest effect of temperature on gene expression was observed at 2°C. Furthermore, UV radiation had stronger effects on gene expression than high PAR, and caused stronger induction genes correlated to categories such as photosynthetic components and vitamin B6 biosynthesis. Higher temperatures ameliorated the negative effects of UV radiation in S. latissima. Regulation of ROS scavenging seems to work in a compartment specific way. Gene expression profiles of ROS scavengers indicate a high amount of oxidative stress in response to the 2°C condition as well as to excessive light at 12°C. Interestingly stress levels that did not lead to physiological alterations already caused a transcriptomic response.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 6
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    Pelagic and benthic communities of the Antarctic ecosystem of Potter Cove: Genomics and ecological implications (2017)
    ELSEVIER SCIENCE BV
    In:  EPIC3Marine Genomics, ELSEVIER SCIENCE BV, 33, pp. 1-11, ISSN: 1874-7787
    Details
    Publication Date: 2017-06-30
    Description: Molecular technologies are more frequently applied in Antarctic ecosystem research and the growing amount of sequence-based information available in databases adds a new dimension to understanding the response of Antarctic organisms and communities to environmental change. We apply molecular techniques, including fingerprinting, and amplicon and metagenome sequencing, to understand biodiversity and phylogeography to resolve adaptive processes in an Antarctic coastal ecosystem from microbial to macrobenthic organisms and communities. Interpretation of the molecular data is not only achieved by their combination with classical methods (pigment analyses or microscopy), but furthermore by combining molecular with environmental data (e.g., sediment characteristics, biogeochemistry or oceanography) in space and over time. The studies form part of a long-term ecosystem investigation in Potter Cove on King-George Island, Antarctica, in which we follow the effects of rapid retreat of the local glacier on the cove ecosystem. We formulate and encourage new approaches to integrate molecular tools into Antarctic ecosystem research, environmental conservation actions, and polar ocean observatories.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev , info:eu-repo/semantics/article
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  • 7
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    Origin matters - comparative transcriptomics in Saccharina latissima (Phaeophyceae) (2015)
    ELSEVIER SCIENCE BV
    In:  EPIC3Journal of Experimental Marine Biology and Ecology, ELSEVIER SCIENCE BV, 476, pp. 22-30, ISSN: 0022-0981
    Details
    Publication Date: 2015-12-21
    Description: Kelps, brown algae of the order Laminariales, dominate rocky shores of cold-temperate regions and constitute important components of coastal ecosystems. Factors influencing their distribution are light including UV-radiation, and temperature, therefore future global environmental changes will likely have an impact on their zonation, distribution patterns, and primary productivity. Here the question was addressed whether laboratory studies can allow such predictions on natural communities by exploring interactive effects of UV-radiation, temperature and growth conditions, on cultivated versus field sporophytes of Saccharina latissima. Both were exposed for 24h to UV-radiation at three different temperatures (2,7 & 12°C), gene expression profiles under UV-radiation at different temperatures were assessed through microarray hybridizations, and comparisons of gene expression profiles in field versus culture sporophytes were carried out. Principal effects of UV-radiation were similar in culture and field sporophytes, demonstrating laboratory experiments being well suited for investigating basic molecular mechanisms of acclimation to abiotic stresses in the field. However, sporophytes from the field reacted less intense than laboratory cultures, indicating that the severity of transcriptomic responses in situ may be over-estimated from laboratory experiments.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 8
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    Pyrosequencing and de novo assembly of Antarctic krill (Euphausia superba) transcriptome to study the adaptability of krill to climate-induced environmental changes (2015)
    WILEY-BLACKWELL PUBLISHING
    In:  EPIC3Molecular Ecology Resources, WILEY-BLACKWELL PUBLISHING, ISSN: 1755-098X
    Details
    Publication Date: 2015-04-17
    Description: The Antarctic krill, Euphausia superba, has a key position in the Southern Ocean food web by serving as direct link between primary producers and apex predators. The southwest Atlantic sector of the Southern Ocean, where the majority of the krill population is located, is experiencing one of the most profound environmental changes worldwide. Up to now, we have only cursory information about krill’s genomic plasticity to cope with the ongoing environmental changes induced by anthropogenic CO2 emission. The genome of krill is not yet available due to its large size (about 48 Gbp). Here, we present two cDNA normalized libraries from whole krill and krill heads sampled in different seasons that were combined with two datasets of krill transcriptome projects, already published, in order to produce the first knowledgebase krill ‘master’ transcriptome. The new library produced 25% more E. superba transcripts and now includes nearly all the enzymes involved in the primary oxidative metabolism (Glycolysis, Krebs cycle and oxidative phosphorylation) as well as all genes involved in glycogenesis, glycogen breakdown, gluconeogenesis, fatty acid synthesis and fatty acids β-oxidation. With these features, the ‘master’ transcriptome provides the most complete picture of metabolic pathways in Antarctic krill and will provide a major resource for future physiological and molecular studies. This will be particularly valuable for characterizing the molecular networks that respond to stressors caused by the anthropogenic CO2 emissions and krill’s capacity to cope with the ongoing environmental changes in the Atlantic sector of the Southern Ocean.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , peerRev
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  • 9
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    Stress response or beneficial temperature acclimation: Transcriptomic signatures in Antarctic fish (Pachycara brachycephalum) (2014)
    WILEY-BLACKWELL PUBLISHING
    In:  EPIC3Molecular Ecology, WILEY-BLACKWELL PUBLISHING, ISSN: 0962-1083
    Details
    Publication Date: 2014-07-04
    Description: Research on the thermal biology of Antarctic marine organisms has increased awareness of their vulnerability to climate change, as a flipside of their adaptation to life in the permanent cold and their limited capacity to acclimate to variable temperatures. Here, we employed a species–specific microarray of the Antarctic eelpout, Pachycara brachycephalum to identify long-term shifts in gene expression after 2 months of acclimation to six temperatures between -1°C and 9°C. Changes in cellular processes comprised signalling, post-translational modification, cytoskeleton remodelling, metabolic shifts and alterations in the transcription as well as translation machinery. The magnitude of transcriptomic responses paralleled the change in whole animal performance. Optimal growth at 3°C occurred at a minimum in gene expression changes indicative of a balanced steady state. The up–regulation of ribosomal transcripts at 5°C and above was accompanied by the transcriptomic activation of differential protein degradation pathways, from proteasome-based degradation in the cold towards lysosomal protein degradation in the warmth. From 7°C upwards increasing transcript levels representing heat shock proteins and an acute inflammatory response indicate cellular stress. Such patterns may contribute to a warm-induced energy deficit and a strong weight loss at temperatures above 6°C. Together, cold or warm acclimation led to specific cellular rearrangements and the progressive development of functional imbalances beyond the optimum temperature. The observed temperature–specific expression profiles reveal the molecular basis of thermal plasticity and refine present understanding of the shape and positioning of the thermal performance curve of ectotherms on the temperature scale.
    Repository Name: EPIC Alfred Wegener Institut
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  • 10
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    Bacterial communities and chemical parameters in soils and coastal sediments in response to diesel spills at Carlini Station, Antarctica (2017)
    ELSEVIER SCIENCE BV
    In:  EPIC3Science of The Total Environment, ELSEVIER SCIENCE BV, 605-60, pp. 26-37, ISSN: 0048-9697
    Details
    Publication Date: 2017-08-29
    Description: A diesel spill occurring at Carlini Station (King-George Island, South Shetlands) in 2009 initiated investigations of the fate of the hydrocarbons and their effect on the bacterial communities of the Potter Cove ecosystem. Soils and sediments were sampled across the 200-meter long diesel plume towards Potter Cove four and 15 months after the spill. The sampling revealed a second fuel leakage from an underground pipeline at the spill site. The hydrocarbon fraction spilt over frozen and snow-covered ground, reached the sea, and dispersed with the currents. Contray diesel that infiltrated unfrozen soil remained detectable for years and was seeping with ground water towards coastal marine sediments. Structural changes of the bacterial communities as well as hydrocarbon, carbon and nitrogen contents were investigated in sediments in front of the station, two affected terrestrial sites, and a terrestrial non-contaminated reference site. Bacterial communities (16S rRNA gene clone libraries) changed over time in contaminated soils and sediments. At the underground seepage site of highest contamination (5812 to 366 µg g-1dw hydrocarbons from surface to 90-cm depth), communities were dominated by Actinobacteria (18%) and a betaproteobacterium closely related to Polaromonas napthalenivorans (40%). At one of the spill sites affected exclusively at the surface, contamination disappeared within one year. The same bacterial groups were enriched at both contaminated sites. This response at community level suggests that the cold-adapted indigenous microbiota in soils of the West Antarctic Peninsula have a high potential for bioremediation and can support soil cleaning actions in the ecosystem. Intensive monitoring of pollution and site assessment after episodic fuel spills is required for decision-making towards remediation strategies.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev , info:eu-repo/semantics/article
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