Results 71 to 80 of about 1,405 (160)

Seasonal variations in planktonic food web structure affect stability by shifting the distribution of energy fluxes

Oikos, Volume 2026, Issue 4, April 2026.
Seasonality in temperate ecosystems shapes species phenology, influencing interactions and food web structure. Variations in species richness and biomass affect trophic interaction strength, a crucial factor for community stability, which can be assessed through energy fluxes – an essential indicator of ecosystem function.
Simon Bazin, Isabelle Domaizon, Cécilia Barouillet, Victor Frossard, Arnaud Sentis   +4 more
wiley   +1 more source

Evidence of coupled autotrophy and heterotrophy on plastic biofilms and its influence on surrounding seawater

, 2022
International audienceWe measured phytoplankton primary production and heterotrophic bacterial activities on microplastics and seawater in the Northwestern Mediterranean Sea during two 3-month spring periods over 2 consecutive years.
Barbe, Valérie, Giraud, Carolane, Pandin, Caroline, Odobel, Charlène, Conan, Pascal, Meistertzheim, Anne-Leila, Pujo-Pay, Mireille, Ter Hall, Alexandra, Ortega-Retuerta, Eva, Ghiglione, Jean-François, Philip, Léna, Duran, Clélia, ter Halle, Alexandra   +12 more
core   +1 more source

Autotrophic growth of Thermus sp. PS18 and its genomic determinants shed light on the autotrophic lifestyle and its evolution in the Thermaceae family

Frontiers in Microbiology
A thermophilic bacterial strain PS18 was isolated from a hot spring on Kunashir Island under aerobic autotrophic conditions and identified as Thermus brevis. Autotrophy has never been demonstrated in representatives of the Thermaceae family or the entire
Tatyana G. Sokolova, Alexander G. Elcheninov, Galina B. Slobodkina, Ekaterina A. Provotorova, Maria I. Zvereva, Alexander V. Lebedinsky, Nikolai A. Chernyh   +6 more
doaj   +1 more source

Carbon fixation from mineral carbonates

Nature Communications, 2017
Evidence showing that carbonates can directly supply CO2 for autotrophy is lacking. Here, using stable isotope analyses and NanoSIMS imaging, the authors show that a model euendolith, Mastigocoleus testarum strain BC008, derives the majority of its ...
Brandon S. Guida, Maitrayee Bose, Ferran Garcia-Pichel   +2 more
doaj   +1 more source

Metagenomic insights into S(0) precipitation in a terrestrial subsurface lithoautotrophic ecosystem

Frontiers in Microbiology, 2015
The Frasassi and Acquasanta Terme cave systems in Italy host isolated lithoautotrophic ecosystems characterized by sulfur-oxidizing biofilms with up to 50% S(0) by mass.
Trinity eHamilton, Trinity eHamilton, Daniel Seth Jones, Irene eSchaperdoth, Irene eSchaperdoth, Jennifer eMacalady, Jennifer eMacalady   +6 more
doaj   +1 more source

Monitoring Coral Reef Metabolism Under Changing Oceans–Novel Insights From Seawater Stable Carbon Isotopes

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 4, April 2026.
Abstract Mounting environmental stressors are driving Caribbean reefs from coral to sponge and macroalgae dominance, necessitating a need for more nuanced metrics of reef metabolism under trophic transitions. Drawing upon four seasonally replicated field campaigns to Curaçao, we reveal highly variable net ecosystem productivity (−243 ± 69 C m−2 day−1 ...
Isaiah W. Bolden, Amanda H. V. Timmerman, David R. Clark, Bryce K. Belanger, Jessica L. Oster, Marcos Salas‐Saavedra, Elizabeth M. Niespolo   +6 more
wiley   +1 more source

Remobilization of seed phosphorus reserves and their role in attaining phosphorus autotrophy in maize (Zea mays L.) seedlings

, 2014
International audienceSuccessful remobilization of seed reserves is the driving force behind seedling establishment for maximum final crop outcomes. The remobilization of stored maize seed phosphorus (P), and its allocation towards growing seedlings is ...
Nadeem, Muhammad, Morel, Christian, Mollier, Alain, Pellerin, Sylvain,, Vives, Alain, PELLERIN, Sylvain, Pellerin, Sylvain, S., Prud'homme, Loïc   +7 more
core   +1 more source

The Contribution Ratio of Autotrophic and Heterotrophic Metabolism during a Mixotrophic Culture of Chlorella sorokiniana

, 2021
The contribution ratio of autotrophic and heterotrophic metabolism in the mixotrophic culture of Chlorella sorokiniana (C. sorokiniana) was investigated.
Shan Zhang, Jeong-Eun Park, Thi Hiep Han, Sun-Jin Hwang   +3 more
core   +1 more source

Isotopic and elemental compositions reveal density‐dependent nutrition pathways in a population of mixotrophic jellyfish [PDF]

, 2020
Mixotrophic organisms are increasingly recognized as important components of ecosystems, but the factors controlling their nutrition pathways (in particular their autotrophy–heterotrophy balance) are little known.
Huang, Jessica Y. T., Hansen, Thomas, Behl, Stephan, Gerda Ucharm, Stephan Behl, Stockenreiter, Maria, Maria Stockenreiter, Nicolas Djeghri, Herwig Stibor, Stibor, Herwig, Pondaven, Philippe, Jessica Y. T. Huang, Ucharm, Gerda, Philippe Pondaven, Huang, Jessica, Djeghri, Nicolas, Sharon Patris, Patris, Sharon, Thomas Hansen   +18 more
core   +1 more source

Quantifying archaeal community autotrophy in the mesopelagic ocean using natural radiocarbon [PDF]

, 2006
An ammonia-oxidizing, carbon-fixing archaeon, Candidatus “Nitrosopumilus maritimus,” recently was isolated from a salt-water aquarium, definitively confirming that chemoautotrophy exists among the marine archaea.
Aluwihare, L. I, Aluwihare, Lihini I, Shah, S. R, Ingalls, A. E, Santos, Guaciara M, Pearson, A., Hansman, R. L, Hansman, Roberta L, Druffel, Ellen R. M, Pearson, Ann, Santos, G. M, Shah, Sunita R, Ingalls, Anitra E, Druffel, E. R. M   +13 more
core   +1 more source