Results 21 to 30 of about 3,043 (201)

High Growth Potential of Long-Term Starved Deep Ocean Opportunistic Heterotrophic Bacteria

Frontiers in Microbiology, 2019
Experiments with bacteria in culture have shown that they often display “feast and famine” strategies that allow them to respond with fast growth upon pulses in resource availability, and enter a growth-arrest state when resources are limiting.
Marta Sebastián, Marta Sebastián, Margarita Estrany, Clara Ruiz-González, Irene Forn, Maria Montserrat Sala, Josep M. Gasol, Josep M. Gasol, Celia Marrasé   +8 more
doaj   +1 more source

Prokaryotic Capability to Use Organic Substrates Across the Global Tropical and Subtropical Ocean

Frontiers in Microbiology, 2020
Prokaryotes play a fundamental role in decomposing organic matter in the ocean, but little is known about how microbial metabolic capabilities vary at the global ocean scale and what are the drivers causing this variation. We aimed at obtaining the first
Maria Montserrat Sala, Clara Ruiz-González, Encarna Borrull, Iñigo Azúa, Zuriñe Baña, Begoña Ayo, Begoña Ayo, X. Antón Álvarez-Salgado, Josep M. Gasol, Josep M. Gasol, Carlos M. Duarte, Carlos M. Duarte   +11 more
doaj   +1 more source

Particles act as ‘specialty centers’ with expanded enzymatic function throughout the water column in the western North Atlantic

Frontiers in Microbiology, 2022
Heterotrophic bacteria initiate the degradation of high molecular weight organic matter by producing an array of extracellular enzymes to hydrolyze complex organic matter into sizes that can be taken up into the cell.
C. Chad Lloyd, Sarah Brown, John Paul Balmonte, John Paul Balmonte, Adrienne Hoarfrost, Adrienne Hoarfrost, Sherif Ghobrial, Carol Arnosti   +7 more
doaj   +1 more source

Assemblage Structure of Larval Fishes in Epipelagic and Mesopelagic Waters of the Northern Gulf of Mexico

Frontiers in Marine Science, 2021
The early life stages of fishes play a critical role in pelagic food webs and oceanic carbon cycling, yet little is known about the taxonomic composition and distribution of larval fishes in the northern Gulf of Mexico (GOM) below the epipelagic (<200
Verena H. Wang, Carley R. Zapfe, Frank J. Hernandez   +2 more
doaj   +1 more source

Too Close for Comfort? Isotopic Niche Segregation in New Zealand’s Odontocetes

Biology, 2022
Species occurring in sympatry and relying on similar and limited resources may partition resource use to avoid overlap and interspecific competition.
Katharina J. Peters, Sarah J. Bury, Bethany Hinton, Emma L. Betty, Déborah Casano-Bally, Guido J. Parra, Karen A. Stockin   +6 more
doaj   +1 more source

Microorganisms Involved in Methylmercury Demethylation and Mercury Reduction are Widely Distributed and Active in the Bathypelagic Deep Ocean Waters [PDF]

Environmental Science & Technology
Andrea G. Bravo, Marta Ferri Peradalta, Isabel Sanz-Sáez   +2 more
exaly   +2 more sources

SAR202 Genomes from the Dark Ocean Predict Pathways for the Oxidation of Recalcitrant Dissolved Organic Matter

mBio, 2017
Deep-ocean regions beyond the reach of sunlight contain an estimated 615 Pg of dissolved organic matter (DOM), much of which persists for thousands of years.
Zachary Landry, Brandon K. Swan, Gerhard J. Herndl, Ramunas Stepanauskas, Stephen J. Giovannoni   +4 more
doaj   +1 more source

Global compilation of stable carbon (δ13C) and nitrogen (δ15N) isotope values of meso- and bathypelagic fish

, 2023
Stable isotope analysis (SIA) has emerged as a valuable tool for understanding the trophic structure of the marine food web and gaining insights into trophic levels and niche.
Jónasdóttir, Sigrún Huld, Papadimitraki, Maria   +1 more
core   +1 more source

High Temporal Variability of Total Organic Carbon in the Deep Northeastern Pacific

Frontiers in Earth Science, 2020
The interseasonal and interannual variability of total organic carbon (TOC) was assessed in the deep northeastern Pacific Ocean, an area characterized by high primary production and organic matter export. Samples were collected from throughout the deeper
Chelsi N. Lopez, Marie Robert, Moira Galbraith, Sarah K. Bercovici, Sarah K. Bercovici, Sarah K. Bercovici, Monica V. Orellana, Monica V. Orellana, Dennis A. Hansell   +8 more
doaj   +1 more source

Molecular Mechanisms of the Convergent Adaptation of Bathypelagic and Abyssopelagic Fishes

Genome Biology and Evolution, 2022
Abstract Harsh environments provide opportunities to study how different species adapt, at the molecular level, to similar environmental stressors. High hydrostatic pressure, low temperature, and absence of sunlight in the deep-sea environment are challenging conditions for gene expression, cell morphology and vision.
Bo, Jing, Xu, Han, Lv, Wenqi, Wang, Cheng, He, Shunping, Yang, Liandong   +5 more
openaire   +2 more sources