Results 81 to 90 of about 15,522 (203)

Flux‐driven evolution: Nitrogen fixation underlies contrasting stoichiometric strategies and genetic lineages in an open‐ocean copepod

Limnology and Oceanography, Volume 71, Issue 4, April 2026.
Abstract Variability in nutrient supply is a defining feature of oligotrophic oceans, yet how nutrient fluxes shape consumer physiology and population structure remains poorly resolved. Here, we examine how diazotrophic nitrogen fixation relates to stoichiometric metabolism and genetic structure in the widespread pelagic copepod Pleuromamma xiphias ...
Kazutaka Takahashi, Fuminori Hashihama, Mitsuhide Sato, Takuhei Shiozaki, Sachiko Horii, Junya Hirai   +5 more
wiley   +1 more source

Genomes of diverse isolates of the marine cyanobacterium Prochlorococcus [PDF]

, 2014
The marine cyanobacterium Prochlorococcus is the numerically dominant photosynthetic organism in the oligotrophic oceans, and a model system in marine microbial ecology.
Awad, Lana, Berube, Paul M., Biller, Steven, Chisholm, Sallie (Penny), Ding, Huiming, Giovannoni, Stephen J., Kelly, Libusha, Moore, Lisa R., Roache-Johnson, Kathryn H., Rocap, Gabrielle, Roggensack, Sara E., Thompson, Jessica Weidemier   +11 more
core   +2 more sources

Spatial Patterns and Regulation of Nanomolar‐Level Nutrients in the Surface Oligotrophic Oceans

Global Biogeochemical Cycles, Volume 40, Issue 4, April 2026.
Abstract Ambient nutrient concentrations and their ratios regulate phytoplankton physiology and biomass in the ocean. In oligotrophic surface waters, nitrate and ammonium (NH4) concentrations are often below conventional analytical detection limits (50–100 nM).
Taketoshi Kodama, Adam C. Martiny, Fuminori Hashihama, Ken Furuya   +3 more
wiley   +1 more source

Ediacara biota flourished in oligotrophic and bacterially dominated marine environments across Baltica. [PDF]

, 2018
Middle-to-late Ediacaran (575-541 Ma) marine sedimentary rocks record the first appearance of macroscopic, multicellular body fossils, yet little is known about the environments and food sources that sustained this enigmatic fauna.
Bekker, Andrey, Junium, Christopher K, Kuznetsov, Anton, Love, Gordon D, Pehr, Kelden, Podkovyrov, Victor, Shumlyanskyy, Leonid, Sokur, Tetyana   +7 more
core   +3 more sources

Dynamic Allocation of Carbon Storage and Nutrient-Dependent Exudation in a Revised Genome-Scale Model of Prochlorococcus

bioRxiv, 2020
Microbial life in the oceans impacts the entire marine ecosystem, global biogeochemistry and climate. The marine cyanobacterium Prochlorococcus, an abundant component of this ecosystem, releases a significant fraction of the carbon fixed through ...
Shany Ofaim, Snorre Sulheim, E. Almaas, D. Sher, D. Segrè   +4 more
semanticscholar   +1 more source

Using Machine Learning to Uncover Ecological Mechanisms Controlling Abundance of Phytoplankton Size Classes From Large‐Scale Observations

Global Biogeochemical Cycles, Volume 40, Issue 4, April 2026.
Abstract Phytoplankton size classes (PSCs) and Phytoplankton functional types (PFTs) determine many fundamental biogeochemical processes including nutrient uptake, energy transfer through marine food webs, ocean carbon export, and gas exchange with the atmosphere. Discerning the causes of spatio‐temporal variability of PSCs is a scientific priority for
Sandupal Dutta, Anand Gnanadesikan
wiley   +1 more source

Patterns and Implications of Gene Gain and Loss in the Evolution of Prochlorococcus [PDF]

, 2013
Prochlorococcus is a marine cyanobacterium that numerically dominates the mid-latitude oceans and is the smallest known oxygenic phototroph. Numerous isolates from diverse areas of the world's oceans have been studied and shown to be physiologically and ...
Chen, Feng, Chisholm, Sallie W, Church, George McDonald, Coleman, Maureen L, Ferriera, Steven, Huang, Katherine, Johnson, Justin, Kettler, Gregory C, Lapidus, Alla, Martiny, Adam C, Richardson, Paul, Rodrigue, Sebastien, Steglich, Claudia, Zucker, Jeremy Daniel Hofeld   +13 more
core   +1 more source

Plasticity in the grazing ecophysiology of Florenciella (Dichtyochophyceae), a mixotrophic nanoflagellate that consumes Prochlorococcus and other bacteria

Limnology and Oceanography, 2020
Mixotrophic nanoflagellates can account for more than half of the bacterivory in the sunlit ocean, yet very little is known about their ecophysiology. Here, we characterize the grazing ecology of an open‐ocean mixotroph in the genus Florenciella (class ...
Qian Li, K. Edwards, Christopher R. Schvarcz, K. Selph, Grieg F. Steward   +4 more
semanticscholar   +1 more source

Biogeochemical Response to Mesoscale Eddies and Tehuano Wind Events in the Oxygen Minimum Zone off the Gulf of Tehuantepec

Journal of Geophysical Research: Oceans, Volume 131, Issue 4, April 2026.
Abstract In the oxygen minimum zone of the eastern tropical North Pacific off the Gulf of Tehuantepec, mesoscale eddies and offshore jets often develop in response to Tehuano wind events. These dynamic features play crucial roles in modulating the vertical distribution of nutrients, dissolved oxygen, biogeochemical cycling, and regional primary ...
E. Lee‐Sánchez, L. Sánchez‐Velasco, D. C. Gutiérrez‐Moreno, J. A. Velásquez‐Aristizábal   +3 more
wiley   +1 more source

Quantitative Proteomics Shows Extensive Remodeling Induced by Nitrogen Limitation in Prochlorococcus marinus SS120 [PDF]

, 2017
Prochlorococcus is the most abundant photosynthetic organism on Earth, contributing significantly to global primary production and playing a prominent role in biogeochemical cycles.
Guadalupe Gííómez-Baena, Jesííóús Dííóúíez, Josííóúíéóé Manuel Garcííóúíéóéía-Fernííóúíéóéíández, Julie A. Huber, Maria Agustina Domínguez-Martíín, Maria Josííóúíé Lííóúíéópez-Grueso, Robert J. Beynon   +6 more
core   +2 more sources