Sylvia G. Sander
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View article: Iron’s irony: speciation, complexation & microbial processing of Fe in hydrothermal plumes
Iron’s irony: speciation, complexation & microbial processing of Fe in hydrothermal plumes Open
This review integrates vent fluid chemistry and biogeochemical processes to assess how hydrothermal systems influence oceanic iron distribution. Despite rapid precipitation of iron-bearing minerals immediately after venting, buoyant hydrot…
View article: Coupled hydrothermal venting and hydrocarbon seepage discovered at Conical Seamount, Papua New Guinea
Coupled hydrothermal venting and hydrocarbon seepage discovered at Conical Seamount, Papua New Guinea Open
During research expedition SO299 with the German RV Sonne , we discovered the first deep-sea hydrothermal vent system along the Tabar-Lihir-Tanga-Feni island chain in northeastern Papua New Guinea. The Karambusel vent field is hosted by a …
View article: Contrasting bioavailability of iron in glacial vs. groundwater to Antarctic phytoplankton: Linking iron uptake to geochemistry
Contrasting bioavailability of iron in glacial vs. groundwater to Antarctic phytoplankton: Linking iron uptake to geochemistry Open
Iron (Fe) sources and their bioavailability to phytoplankton, driving substantial CO₂ uptake of the large blooms downstream of South Georgia Island, remain largely unknown. Although geochemical characterization suggests that Fe from glacia…
View article: Deep Sea Research and Management Needs
Deep Sea Research and Management Needs Open
The European Marine Board Future Science Brief n°12 “Deep Sea Research and Management Needs” explores the complexity of the deep sea and its role in Ocean health today, highlights the critical ecosystem services and functions it provides, …
View article: Deep Sea Research and Management Needs
Deep Sea Research and Management Needs Open
The deep sea plays a crucial role in the global health of the Ocean and the planet as a whole. We all benefit from the deep ocean. It encompasses 90% of total Ocean volume, provides essential ecosystem services and functions, and hosts div…
View article: New Insights into SMS Deposits: How Microbial Activity and Oxygen Levels Shape Metal Preservation
New Insights into SMS Deposits: How Microbial Activity and Oxygen Levels Shape Metal Preservation Open
Seafloor massive sulfide (SMS) deposits form on the modern ocean seafloor at active hydrothermal vent systems through mixing of mineral-rich, hydrothermal fluids with ambient oxygenated seawater. Once hydrothermal activity ceases, oxygenat…
View article: Hydrothermal activity along the young, ultra-slow spreading Red Sea Rift – an update from recent discoveries
Hydrothermal activity along the young, ultra-slow spreading Red Sea Rift – an update from recent discoveries Open
Hydrothermal activity has been intensively studied at mature mid-ocean ridges and is crucial for the formation of mineral resources, as habitats for chemosynthetic communities, and for the cooling of the newly formed oceanic lithosphere1. …
View article: A New Geological Map of the Marginal Basins of Eastern Papua New Guinea: Implications for Crustal Accretion and Mineral Endowment at Arc–Continent Collisions
A New Geological Map of the Marginal Basins of Eastern Papua New Guinea: Implications for Crustal Accretion and Mineral Endowment at Arc–Continent Collisions Open
Accretion of island arc terranes is a fundamental process of crustal growth and the formation of new continents. Convergent margin tectonics, both compressional and extensional, in accretionary orogens also control the origin and distribut…
View article: Climate change driven effects on transport, fate and biogeochemistry of trace element contaminants in coastal marine ecosystems
Climate change driven effects on transport, fate and biogeochemistry of trace element contaminants in coastal marine ecosystems Open
Human activities and climate change substantially threaten coastal areas, impacting ecosystem functions, services, and human-wellbeing. Trace elements, from both natural and anthropogenic sources, can contaminate coastal regions, and at hi…
View article: Metabolic Regulation of Copper Toxicity during Marine Mussel Embryogenesis
Metabolic Regulation of Copper Toxicity during Marine Mussel Embryogenesis Open
The development of new tools for assessing the health of cultured shellfish larvae is crucial for aquaculture industries to develop and refine hatchery methodologies. We established a large-volume ecotoxicology/health stressor trial, expos…
View article: Emergent interactive effects of climate change and contaminants in coastal and ocean ecosystems
Emergent interactive effects of climate change and contaminants in coastal and ocean ecosystems Open
The effects of climate change (CC) on contaminants and their potential consequences to marine ecosystem services and human wellbeing are of paramount importance, as they pose overlapping risks. Here, we discuss how the interaction between …
View article: Microplastics and nanoplastics in the marine-atmosphere environment
Microplastics and nanoplastics in the marine-atmosphere environment Open
The discovery of atmospheric micro(nano)plastic transport and ocean–atmosphere exchange points to a highly complex marine plastic cycle, with negative implications for human and ecosystem health. Yet, observations are currently limited. In…
View article: Trace Metal Dynamics in Shallow Hydrothermal Plumes at the Kermadec Arc
Trace Metal Dynamics in Shallow Hydrothermal Plumes at the Kermadec Arc Open
Hydrothermal vents are a source of many trace metals to the oceans. Compared to mid-ocean ridges, hydrothermal vent systems at arcs occur in shallower water depth and are much more diverse in fluid composition, resulting in highly variable…
View article: The complex provenance of Cu-binding ligands in the South-East Atlantic
The complex provenance of Cu-binding ligands in the South-East Atlantic Open
Highlights
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\n• Cu speciation was investigated for the first time in the South-East Atlantic using CLE-AdCSV.
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\n• [Cu2+] were mostly below the putative biolimiting threshold of various marine microorganisms.
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\n• Cu speciation param…
View article: Fe-binding organic ligands in coastal and frontal regions of the western Antarctic Peninsula
Fe-binding organic ligands in coastal and frontal regions of the western Antarctic Peninsula Open
Organic ligands are a key factor determining the availability of dissolved iron (DFe) in the high-nutrient low-chlorophyll (HNLC) areas of the Southern Ocean. In this study, organic speciation of Fe is investigated along a natural gradient…
View article: Sources of Fe-binding organic ligands in surface waters of thewestern Antarctic Peninsula
Sources of Fe-binding organic ligands in surface waters of thewestern Antarctic Peninsula Open
Organic ligands are a key factor determining the availability of dissolved iron (DFe) in the high nutrient low chlorophyll (HNLC) areas of the Southern Ocean. In this study, organic speciation of Fe is investigated along a natural gradient…
View article: Submarine Hydrothermal Discharge and Fluxes of Dissolved Fe and Mn, and He Isotopes at Brothers Volcano Based on Radium Isotopes
Submarine Hydrothermal Discharge and Fluxes of Dissolved Fe and Mn, and He Isotopes at Brothers Volcano Based on Radium Isotopes Open
Hydrothermal venting is an important transfer process of energy and elements between the Earth’s solid material and the oceans. Compared to mid-ocean-ridge hydrothermal vent fields, those at intra-oceanic island arcs are typically in shall…
View article: Review of the Scientific and Institutional Capacity of Small Island Developing States in Support of a Bottom-up Approach to Achieve Sustainable Development Goal 14 Targets
Review of the Scientific and Institutional Capacity of Small Island Developing States in Support of a Bottom-up Approach to Achieve Sustainable Development Goal 14 Targets Open
Capacity building efforts in Small Island Developing States (SIDS) are indispensable for the achievement of both individual and collective ocean-related 2030 agenda priorities for sustainable development. Knowledge of the individual capaci…
View article: The Importance of Bottom-Up Approaches to International Cooperation in Ocean Science: The Iron Story
The Importance of Bottom-Up Approaches to International Cooperation in Ocean Science: The Iron Story Open
In the past decade, several international efforts developed to address urgent societal issues have been identified through, for example, the United Nations 2030 Agenda for Sustainable Development and its associated 17 Sustainable Developme…
View article: Overview of all fluid samples collected during SONNE cruise SO253
Overview of all fluid samples collected during SONNE cruise SO253 Open
Overview of all fluid samples collected during SO253 along the Kermadec intraoceanic arc together with parameters that were analyzed directly onboard.Fe were determined by a visual Fe CHEMets© field kit.
View article: Importance of refractory ligands and their photodegradation for iron oceanic inventories and cycling
Importance of refractory ligands and their photodegradation for iron oceanic inventories and cycling Open
Iron is an essential micronutrient that limits primary production in up to 40% of the surface ocean and influences carbon dioxide uptake and climate change. Dissolved iron is mostly associated with loosely characterised organic molecules, …
View article: A unique temperate rocky coastal hydrothermal vent system (Whakaari–White Island, Bay of Plenty, New Zealand): constraints for ocean acidification studies
A unique temperate rocky coastal hydrothermal vent system (Whakaari–White Island, Bay of Plenty, New Zealand): constraints for ocean acidification studies Open
In situ effects of ocean acidification are increasingly studied at submarine CO2 vents. Here we present a preliminary investigation into the water chemistry and biology of cool temperate CO2 vents near Whakaari–White Island, New Zealand. W…
View article: Parameters Governing the Community Structure and Element Turnover in Kermadec Volcanic Ash and Hydrothermal Fluids as Monitored by Inorganic Electron Donor Consumption, Autotrophic CO2 Fixation and 16S Tags of the Transcriptome in Incubation Experiments
Parameters Governing the Community Structure and Element Turnover in Kermadec Volcanic Ash and Hydrothermal Fluids as Monitored by Inorganic Electron Donor Consumption, Autotrophic CO2 Fixation and 16S Tags of the Transcriptome in Incubation Experiments Open
The microbial community composition and its functionality was assessed for hydrothermal fluids and volcanic ash sediments from Haungaroa and hydrothermal fluids from the Brothers volcano in the Kermadec island arc (New Zealand). The Haunga…