1,721,100 research outputs found
Deep-sea benthic ecosystems waste nothing and recycle everything, even viruses
No full textViruses are the most abundant biological entities of the global ocean and have a pervasive role in marine ecosystems because, being a major cause of mortality, they module the functioning of food webs, and biogeochemical cycling. This role is due not only to their ability to infect and lyse marine organisms but also to the decomposition of their particles (viral decay). The organic matter of viral origin, indeed, can be recycled by benthic organisms thus representing an additional important food source for their metabolism, especially in deep-sea sediments, characterized by very low availability of trophic resources. This short note will present an overview of the available information on viral decay in deep-sea benthic ecosystems
From virus isolation to metagenome generation for investigating viral diversity in deep-sea sediments
No full textExtraction efficiency of different microplastic polymers from deep-sea sediments and their quantitative relevance
Full text linkAn increasing number of methods for extracting microplastic particles from marine sediments have been published but without evaluating the extraction efficiency. Furthermore, while most of the procedures developed have been applied to sandy sediments from shallow water habitats, specific and standardized procedures for deep-water sediments (> 200 meters deep) are limited. In this study, we describe a specific protocol for extracting microplastics (2- 1000 μm) from deep-sea sediments and for quantifying and identifying them. We also assessed its extraction efficiency, which resulted in a high recovery (on average ca. 60%, and up to 80%) particularly, for polyethylene, polypropylene, and polystyrene. This method can be applied to all fine-grained/muddy sediments and allows the extraction of even the smallest fraction of microplastics (<20 μm), which are expected to have the most severe effects on marine biodiversity and ecosystem functioning and ultimately also have implications for human health
Deep hypersaline anoxic basins as untapped reservoir of polyextremophilic prokaryotes of biotechnological interest
No full textMarine microbial-derived molecules and their potential use in cosmeceutical and cosmetic products
Full text linkFossilised DNA: a new marker for reconstructing the fate of archeological material retrieved from the sea
No full textExtracellular DNA as a genetic recorder of microbial diversity in benthic deep-sea ecosystems
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Rapid response of benthic deep-sea microbes (viruses and prokaryotes) to an intense dense shelf water cascading event in a submarine canyon of the NW Mediterranean Sea
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