Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Helena Osterholz"'
Autor:
Helena Osterholz, Stephanie Turner, Linda J. Alakangas, Eva-Lena Tullborg, Thorsten Dittmar, Birgitta E. Kalinowski, Mark Dopson
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-14 (2022)
Dissolved organic matter in the Fennoscandian Shield deep continental bedrock fracture waters of varying characteristics and ages carries a strong terrigenous signature, and only a small proportion of this potential energy source links to the deep bi
Externí odkaz:
https://doaj.org/article/fc6d3c3624b64e8b8b336ac851a5a034
Autor:
Ellen Iva Rosewig, Julian Schade, Johannes Passig, Helena Osterholz, Robert Irsig, Dominik Smok, Nadine Gawlitta, Jürgen Schnelle-Kreis, Jan Hovorka, Detlef Schulz-Bull, Ralf Zimmermann, Thomas W. Adam
Publikováno v:
Atmosphere, Vol 14, Iss 5, p 849 (2023)
Ship emissions are a major cause of global air pollution, and in particular, emissions from the combustion of bunker fuels, such as heavy fuel oil (HFO), show strong impacts on the environment and human health. Therefore, sophisticated measurement te
Externí odkaz:
https://doaj.org/article/eb062978065a42d9a38ee06b04b22f7f
Autor:
Helena Osterholz, Christian Burmeister, Susanne Busch, Madleen Dierken, Helena C. Frazão, Regina Hansen, Jenny Jeschek, Anke Kremp, Lars Kreuzer, Birgit Sadkowiak, Joanna J. Waniek, Detlef E. Schulz-Bull
Publikováno v:
Frontiers in Marine Science, Vol 8 (2021)
Dissolved and particulate organic carbon (DOC, POC) and nitrogen (DON, PON) constitute essential nutrient and energy sources to heterotrophic microbes in aquatic systems. Especially in the shallow coastal ocean, the concentrations are highly variable
Externí odkaz:
https://doaj.org/article/6babeacf266f4d5f9f272e3bdd15e539
Autor:
Andrew D. Steen, Stephanie Kusch, Hussain A. Abdulla, Nevenka Cakić, Sarah Coffinet, Thorsten Dittmar, James M. Fulton, Valier Galy, Kai-Uwe Hinrichs, Anitra E. Ingalls, Boris P. Koch, Elizabeth Kujawinski, Zhanfei Liu, Helena Osterholz, Darci Rush, Michael Seidel, Julio Sepúlveda, Stuart G. Wakeham
Publikováno v:
Frontiers in Marine Science, Vol 7 (2020)
Advances in sampling tools, analytical methods, and data handling capabilities have been fundamental to the growth of marine organic biogeochemistry over the past four decades. There has always been a strong feedback between analytical advances and s
Externí odkaz:
https://doaj.org/article/b216b35adea64a468f6bd9fcdab220ba
Autor:
Alba María Martínez-Pérez, Mar Nieto-Cid, Helena Osterholz, Teresa S. Catalá, Isabel Reche, Thorsten Dittmar, Xosé Antón Álvarez-Salgado
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
Abstract Dissolved organic matter (DOM) plays a key role in global biogeochemical cycles and experiences changes in molecular composition as it undergoes processing. In the semi-closed basins of the oligotrophic Mediterranean Sea, these gradual molec
Externí odkaz:
https://doaj.org/article/eb70906578114d2899163ee12d1a677e
Publikováno v:
Frontiers in Earth Science, Vol 4 (2016)
Estuaries as connectors of freshwater and marine aquatic systems are hotspots of biogeochemical element cycling. In one of the best studied temperate estuaries, the Delaware Estuary (USA), we investigated the variability of dissolved organic matter (
Externí odkaz:
https://doaj.org/article/b596012094bb4b3d819b8fe8869a6f61
Publikováno v:
Journal of Geophysical Research: Biogeosciences
Tracing pathways and transformations of particulate organic carbon from landscape sources to oceanic sinks is commonly done using the isotopic composition or biomarker content of particulate organic matter (POM). However, similarity of source charact
Autor:
Michael Naumann, Jaakko Mannio, Helena Osterholz, Noomi Asker, Friederike Habedank, Marion Kanwischer, Elin Dahlgren, Kathrin Fisch, Ann-Sofie Wernersson, Detlef E. Schulz-Bull, Marisa A. Wirth
Publikováno v:
Ambio. 51:1588-1608
The Baltic Sea is among the most polluted seas worldwide. Anthropogenic contaminants are mainly introduced via riverine discharge and atmospheric deposition. Regional and international measures have successfully been employed to reduce concentrations
Autor:
Lucas P. P. Braga, Chloé Orland, Erik J. S. Emilson, Amelia A. Fitch, Helena Osterholz, Thorsten Dittmar, Nathan Basiliko, Nadia C. S. Mykytczuk, Andrew J. Tanentzap
Publikováno v:
Proceedings of the National Academy of Sciences. 119
Global change is altering the vast amount of carbon cycled by microbes between land and freshwater, but how viruses mediate this process is poorly understood. Here, we show that viruses direct carbon cycling in lake sediments, and these impacts inten
Autor:
Sunita R. Shah Walter, Ulrike Jaekel, Helena Osterholz, Andrew T. Fisher, Julie A. Huber, Ann Pearson, Thorsten Dittmar, Peter R. Girguis
Publikováno v:
Nature Geoscience. 16:190-191