A5037047574- Microbial Community Ecology and Physiology
- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Methane Hydrates and Related Phenomena
- Ocean Acidification Effects and Responses
- Genomics and Phylogenetic Studies
- Oceanographic and Atmospheric Processes
- Protist diversity and phylogeny
- Geology and Paleoclimatology Research
- Arctic and Antarctic ice dynamics
- Atmospheric and Environmental Gas Dynamics
- Bacteriophages and microbial interactions
- Atmospheric chemistry and aerosols
- Marine Bivalve and Aquaculture Studies
- Physiological and biochemical adaptations
- International Maritime Law Issues
- Marine and coastal plant biology
- Environmental DNA in Biodiversity Studies
- Indoor Air Quality and Microbial Exposure
- Geological and Tectonic Studies in Latin America
- Archaeological and Geological Studies
- Biosensors and Analytical Detection
- Intellectual Property and Patents
- Coastal wetland ecosystem dynamics
- Building materials and conservation
Consejo Superior de Investigaciones Científicas
2013-2025
Instituto Español de Oceanografía
2017-2025
Instituto Volcanológico de Canarias
2019-2023
Centro Oceanográfico de Canarias
2019-2023
King Abdullah University of Science and Technology
2015-2017
Universitat de les Illes Balears
2010-2017
Mediterranean Institute for Advanced Studies
2008-2017
Instituto de Investigación en Cambio Global
2016
Royal Netherlands Institute for Sea Research
1999-2013
University of the Basque Country
1998
The evolution of marine microbes over billions years predicts that the composition microbial communities should be much greater than published estimates a few thousand distinct kinds per liter seawater. By adopting massively parallel tag sequencing strategy, we show bacterial deep water masses North Atlantic and diffuse flow hydrothermal vents are one to two orders magnitude more complex previously reported for any environment. A relatively small number different populations dominate all...
Dilution solves the recalcitrance question The deep ocean is full of dissolved organic carbon, some which has remained unchanged for thousands years. What makes these compounds so resistant to microbial degradation? Perhaps their chemical structures make them intrinsically difficult metabolize? In contrast, Arrieta et al. show that they are simply too dilute be viable sources energy microorganisms (see Perspective by Middleburg). Further experiments if seemingly recalcitrant molecules...
Diatoms of the iron-replete continental margins and North Atlantic are key exporters organic carbon. In contrast, diatoms iron-limited Antarctic Circumpolar Current sequester silicon, but comparatively little carbon, in underlying deep ocean sediments. Because Southern Ocean is major hub oceanic nutrient distribution, selective silicon sequestration there limits diatom blooms elsewhere consequently biotic carbon potential entire ocean. We investigated this paradox an situ iron fertilization...
The atmosphere plays a fundamental role in the transport of microbes across planet but it is often neglected as microbial habitat. Although ocean represents two thirds Earth's surface, there little information on atmospheric load over open ocean. Here we provide global estimate loads and air-sea exchanges tropical subtropical oceans based data collected along Malaspina 2010 Circumnavigation Expedition. Total airborne prokaryotes eukaryotes were estimated at 2.2 × 1021 2.1 cells,...
Abstract The deep sea, the largest ocean’s compartment, drives planetary-scale biogeochemical cycling. Yet, functional exploration of its microbial communities lags far behind other environments. Here we analyze 58 metagenomes from tropical and subtropical oceans to generate Malaspina Gene Database. Free-living or particle-attached lifestyles drive differences in bathypelagic prokaryotic communities, regardless their biogeography. Ammonia CO oxidation pathways are enriched free-living...
ABSTRACT The potential of terminal-restriction fragment length polymorphism (T-RFLP) and the detection operational taxonomic units (OTUs) by capillary electrophoresis (CE) to characterize marine bacterioplankton communities was compared with that denaturing gradient gel (DGGE). A protocol has been developed optimize separation OTUs between 20 1,632 bp using CE laser-induced fluorescence detection. Additionally, we T-RFLP fingerprinting DGGE optimized for less abundant OTUs. Similar results...
Incubation (in vitro) and incubation-free situ) methods, each with their own advantages limitations, have been used to derive estimates of net community metabolism in the oligotrophic subtropical gyres open ocean. The hypothesis that heterotrophic communities are prevalent most regions is consistent available evidence supported by scaling relationships showing prevail areas low gross primary production, chlorophyll a, warm water, conditions found Heterotrophic can where activity subsidized...
Abstract The free‐living ( FL ) and particle‐attached PA marine microbial communities have repeatedly been proved to differ in their diversity composition the photic ocean also recently bathypelagic at a global scale. However, although high taxonomic ranks exhibit preferences for or mode of life, it remains poorly understood whether two clear lifestyles do exist how these are distributed across prokaryotic phylogeny. We studied (<0.8 μm) (0.8–20 prokaryotes 30 stations worldwide within...
Airborne transport of microbes may play a central role in microbial dispersal, the maintenance diversity aquatic systems and meteorological processes such as cloud formation. Yet, there is almost no information about abundance fate over oceans, which cover >70% Earth's surface are likely source final destination large fraction airborne microbes. We measured lower atmosphere transect covering 17° latitude North Atlantic Ocean derived estimates air-sea exchange microorganisms from data. The...
Ten countries account for 90% of patent claims associated with marine genes, including some from international waters.
Chromophoric dissolved organic matter (CDOM), the optically active fraction of matter, is primarily generated by pelagic organisms in open ocean. In this study, we experimentally determined quantity and spectral quality CDOM bacterioplankton using two different substrates (with without photoproducts) Antarctic krill Euphausia superba evaluated their potential contributions to dynamics peninsular region Southern Ocean. was bacteria all experiments, presence photoproducts influenced both...
Clones from the same marine bacterioplankton community were sequenced, 100 clones based on DNA (16S rRNA genes) and RNA rRNA). This was dominated by α-Proteobacteria in terms of repetitive (52%), but γ-Proteobacteria (44%). The combined analysis led to a characterization phylotypes otherwise uncharacterized if only or libraries would have been analyzed alone. Of clones, 25.5% found this library no close relatives detected library. For library, 21.5% did not indicate Based comparisons between...
Bacterial endophytes are crucial for the survival of many terrestrial plants, but little is known about presence and importance bacterial marine plants. We conducted a survey endophytic community long-living Mediterranean angiosperm Posidonia oceanica in surface-sterilized tissues (roots, rhizomes, leaves) by Denaturing Gradient Gel Electrophoresis (DGGE). A total 26 meadows around Balearic Islands were sampled, band patterns obtained each meadow compared three sampled tissues. Endophytic...
Abstract The global upper ocean has been warming during the last decades accompanied with a chlorophyll‐ (Chl‐ ) and productivity decrease. Whereas subtropical gyres show similar trends, Eastern Boundary Upwelling Systems are thought to increase in due increased trade winds. This study analyzes recent trends sea surface temperature (SST), Chl‐ , net primary production (NPP) meridional wind stress North Atlantic gyre (NASE) order examine if can be detected open upwelling areas how biota...
Growing knowledge of the host-microbiota vertebrates has shown prevalence sex-specific differences in microbiome. However, there are virtually no studies assessing sex-associated variation microbiome cephalopods. Here we assess common octopus ( Octopus vulgaris ) skin using amplicon sequencing targeting V4 hypervariable region prokaryote 16S rRNA genes. Skin and mantle-associated mucus was collected from wild adult individuals (9 males 7 females similar size). There were significant alpha...
Shallow underwater hydrothermal systems are often overlooked despite their potential contribution to marine diversity and biogeochemistry. Over a decade after its eruption, the Tagoro submarine volcano continues emit heat, reduced compounds, nutrients into shallow waters, serving as model system for studying effects of diffuse fluids on surface microbial communities. The impact both phytoplankton bacterial communities was examined through experimental manipulations mimicking dilution levels...
ABSTRACT The interspecific variability in the sensitivity of marine bacterial isolates to UV-B (295- 320-nm) radiation and their ability recover from previous stress were examined. Isolates originating different microenvironments northern Adriatic Sea transferred aged seawater exposed artificial for 4 h subsequently regimens excluding determine recovery stress. Bacterial activity was assessed by thymidine leucine incorporation measurements prior immediately after exposure subsequent...