A5033306407- Microbial Community Ecology and Physiology
- Environmental DNA in Biodiversity Studies
- Protist diversity and phylogeny
- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Isotope Analysis in Ecology
- Marine Biology and Ecology Research
- Genomics and Phylogenetic Studies
- Polar Research and Ecology
- Coastal and Marine Management
- Geological formations and processes
- Gene expression and cancer classification
- Botany and Plant Ecology Studies
- Diatoms and Algae Research
- Heavy metals in environment
- Arctic and Antarctic ice dynamics
- Coastal wetland ecosystem dynamics
- Planetary Science and Exploration
- Aquatic Invertebrate Ecology and Behavior
- Marine and coastal plant biology
- Peatlands and Wetlands Ecology
- Maritime Transport Emissions and Efficiency
- Geochemistry and Geologic Mapping
- Hydrocarbon exploration and reservoir analysis
UiT The Arctic University of Norway
2023-2025
Centre for Arctic Gas Hydrate, Environment and Climate
2024-2025
University of Geneva
2019-2025
Tromsø research foundation
2024
Charles Humbert 8
2024
University of Urbino
2021
Stazione Zoologica Anton Dohrn
2021
Universität Hamburg
2021
Remote deep-ocean sediment (DOS) ecosystems are among the least explored biomes on Earth. Genomic assessments of their biodiversity have failed to separate indigenous benthic organisms from sinking plankton. Here, we compare global-scale eukaryotic DNA metabarcoding datasets (18S-V9) abyssal and lower bathyal surficial sediments euphotic aphotic ocean pelagic layers distinguish plankton diversity in material. Based 1685 samples collected throughout world ocean, show that DOS is at threefold...
Abstract Borealis is a recently discovered submerged mud volcano in the Polar North Atlantic, differing from numerous methane seepages previously identified region. Here we show situ observations remotely operated vehicle (ROV), capturing release of warm (11.5 °C) Neogene sediments and methane-rich fluids gryphon at Borealis. The surrounding seafloor within features extensive carbonate deposits, indicating prolonged diffuse migration. Sampling imagery reveal that supports unique habitats...
The Anthropocene is characterized by dramatic ecosystem changes driven human activities. impact of these activities can be assessed different geochemical and paleontological proxies. However, each proxies provides only a fragmentary insight into the effects anthropogenic impacts. It highly challenging to reconstruct, with holistic view, state ecosystems from preindustrial period present day, covering all biological components, prokaryotes multicellular eukaryotes. Here, we used sedimentary...
The abyssal seafloor is a mosaic of highly diverse habitats that represent the least known marine ecosystems on Earth. Some regions enriched in natural resources, such as polymetallic nodules Clarion-Clipperton Zone (CCZ), attract much interest because their huge commercial potential. Since nodule mining will be destructive, baseline data are necessary to measure its impact benthic communities. Hence, we conducted an environmental DNA and RNA metabarcoding survey CCZ biodiversity targeting...
Sedimentary ancient DNA ( seda DNA) offers a novel retrospective approach to reconstructing the history of marine ecosystems over geological timescales. Until now, biological proxies used reconstruct paleoceanographic and paleoecological conditions were limited organisms whose remains are preserved in fossil record. The development analysis techniques substantially expands range studied taxa, providing holistic overview past biodiversity. Future research is expected dramatically improve our...
Diatom resting stages can remain viable in sediments for decades and germinate when exposed to suitable environmental conditions, inoculating the water column surface with new populations of cells. Classical methods, based on acid-cleaning diatom frustules sediment samples, do not discriminate between living dead cells may destroy more fragile taxa. We used a metabarcoding dataset V9 region 18S rRNA (20,602 reads, 102 Amplicon Sequence Variants (ASV)) coupled Serial Dilution Culture method...
The Cold Seeps Extreme24 Expedition was the second leg of two expeditions, which form part University Tromsø’s Extreme 24 project. expedition focused on cold seeps sites characterised by methane emissions in several localities Barents Sea. is a research initiative (PI G. Panieri) hosted Department Geosciences, Faculty Science and Technology at UiT, Arctic Norway, situated Tromsø, involved partners from different institutes universities around world used REV Ocean Remotely Operated Vehicle...
Borealis is a newly identified underwater mud volcano located in the Polar North Atlantic, distinct from many methane emissions previously found area. In this study, we present direct observations remotely operated vehicle (ROV), documenting emission of warm (11.5°C) Neogene sediments and methane-laden fluids gryphon at Borealis. The seafloor around covered with extensive carbonate formations, suggesting long history diffuse flow. Our sampling imagery indicate that hosts unique...
Cold-water corals in the Hola area off coast of Vesterålen (N. Norway), thrive on a substrate made methane-derived carbonate and are closely associated with microbial mats. High resolution seafloor imagery sediment samples collected during EMAN7 expedition June 2022 allowed us to reconstruct spatial relationships between methane seepage habitats gain insights into subsurface biogeochemical processes directly influencing benthic ecosystems. Here, we present fine-scale orthomosaics...
Environmental DNA metabarcoding reveals a vast genetic diversity of marine eukaryotes. Yet, most the data remain unassigned due to paucity reference databases. This is particularly true for deep-sea meiofauna and eukaryotic microbiota, whose hidden largely unexplored. Here, we tackle this issue by using unique signatures classify unknown metabarcodes assigned foraminifera. We analyzed obtained from 311 sediment samples collected in Clarion-Clipperton Fracture Zone, an area potential...
This report provides an overview of the Multisensory and Experimental Workshop organized by ECOCARE team. The workshop took place in Aldeia Maraka’nà, as a collaborative initiative coordinated Giulia Parola, Júlia Xavante, Ana María Montaña Mónoga, Natalia Médici Machado, Aline Wennerstrom, with participation Rodrigo Tavares. Law, marine science Indigenous knowledge systems were interwoven to develop activities that involved scholars, community members, teachers learners.
Abstract Environmental DNA (eDNA) metabarcoding of marine sediments has revealed large amounts sequences assigned to planktonic taxa. How this eDNA is delivered on the seafloor and preserved in sediment not well understood. We address these questions by comparing microfossil foraminifera assemblages cores taken off Newfoundland across a strong ecological gradient. detected down 30 cm observed that planktonic/benthic amplicon ratio changed with depth. The relative proportion foraminiferal...
Xenophyophores are large, agglutinated foraminifera that dominate the benthic megafauna in some parts of deep sea. Here, we describe an assemblage largely fragmentary specimens from Clarion-Clipperton Zone (CCZ), area eastern abyssal Pacific hosting commercially significant deposits polymetallic nodules. We recognised 18 morphospecies which eight yielded DNA sequences. These include two new genera and three species, Claraclippia seminuda gen. & sp. nov., Stereodiktyoma mollis...
Arctic fjords ecosystems are highly dynamic, with organisms exposed to various natural stressors along productivity clines driven by advection of water masses from shelves. The benthic response these environmental has been extensively studied using traditional, morphology-based approaches mostly focusing on macroinvertebrates. In this study we analyse the effects glacially mediated disturbance biodiversity macrofauna and meiobenthos (meiofauna Foraminifera) in a Svalbard fjord comparing...
The AKMA3 oceanographic expedition (29th April–10th May) is part of the Advancing Knowledge Methane in Arctic, a project funded by Norwegian Research Council (287869). main aim AKMA to develop long-term, multidisciplinary education, and research collaboration focused on Arctic methane sources, processes, ecosystems, geological history provide exceptional training for next generation experts marine sciences greenhouse gas phenomena. focuses three objectives: SCIENCE: Focus interplay between...
Arctic marine biodiversity is undergoing rapid changes due to global warming and modifications of oceanic water masses circulation. These have been demonstrated in the case mega- macrofauna, but much less known about their impact on smaller size organisms, such as foraminifera that represent a main component meiofauna Arctic. Several studies analyzed distribution diversity foraminifera. However, all these are based exclusively morphological identification specimens sorted from sediment...
<title>Abstract</title> This paper presents the recent discovery of <italic>Borealis</italic>, a submerged mud volcano systemlocated in Polar North Atlantic, distinct from numerous methane seepages previously identified region. In situ observations using remotely operated vehicle (ROV) have captured expulsion warm (11.5°C) Neogene sediments and eruption methane-dominated fluids localised site within ~500 m diameter crater. The seafloor around <italic>Borealis</italic> comprises laterally...
Abstract Benthic foraminifera are one of the major groups marine protists that also occur in freshwater and terrestrial habitats. They widely used to monitor current past environmental conditions. Over last three decades, thousands DNA sequences have been obtained from benthic foraminiferal isolates. The results this long-term effort compiled here form first curated ribosomal reference dataset (BFR2). present contains over 5000 a fragment 18S rDNA gene, which is recognized as barcode...
Abstract Arctic marine biodiversity is undergoing rapid changes due to global warming and modifications of oceanic water masses circulation. These have been demonstrated in the case mega- macrofauna, but much less known about their impact on smaller size organisms, such as foraminifera that represents a main component meiofauna Arctic. Several studies analysed distribution diversity foraminifera. However, all these are based exclusively morphological identification specimens sorted from...
The abyssal Pacific Clarion Clipperton Zone (CCZ) hosts vast, commercially valuable seafloor deposits of polymetallic nodules. Foraminifera (testate protists) dominate benthic communities in this region. Here, we present a taxonomic survey, combining morphological and genetic data focussing on mainly meiofauna-sized from the eastern CCZ. Sequences obtained >100 specimens, majority photographically documented, were analysed phylogenetically. Most single-chambered Monothalamea...