Results 71 to 80 of about 8,714 (205)

Evidence of O2 consumption in underway seawater lines: Implications for air-sea O2 and CO2 fluxes [PDF]

, 2010
We observed O2 deficits of 0.5 to 2.0% (1 to 4 mol/kg) in the underway seawater lines of three different ships. Deficits in O2/Ar and isotopic enrichments in dissolved O2 observed in underway seawater lines indicate a respiratory removal process.
Hamme, Roberta C., Juranek, Lauren W., Kaiser, Jan, Quay, Paul D., Wanninkhof, Rik   +4 more
core   +1 more source

Biochemical Basis of Obligate Autotrophy in Nitrosomonas europaea [PDF]

Journal of Bacteriology, 1969
The specific activities of isocitric dehydrogenase, α-ketoglutaric dehydrogenase, succinic dehydrogenase, malic dehydrogenase, and reduced nicotinamide adenine dinucleotide (NADH) oxidase were determined in extracts of Nitrosomonas europaea and compared with the corresponding values for Anacystis ...
openaire   +2 more sources

Revealing the Physiological Patterns of Dinoflagellates in North‐Eastern Adriatic Phytoplankton

Ecology and Evolution, Volume 16, Issue 1, January 2026.
Using metatranscriptomics, we have described the annual taxonomic and functional succession of the phytoplankton community in the north‐eastern Adriatic Sea, taking into account the effects of environmental factors on succession. The results obtained in this way represent the first comprehensive physiological characterisation of the phytoplankton ...
Mia Knjaz, Ana Baricevic, Mirta Smodlaka Tankovic, Natasa Kuzat, Ivan Vlasicek, Lana Grizancic, Ivan Podolsak, Tjasa Kogovsek, Ariana Turkovic, Martin Pfannkuchen, Daniela Maric Pfannkuchen   +10 more
wiley   +1 more source

Integrated In Silico Analysis of Pathway Designs for Synthetic Photo-Electro-Autotrophy. [PDF]

PLoS ONE, 2016
The strong advances in synthetic biology enable the engineering of novel functions and complex biological features in unprecedented ways, such as implementing synthetic autotrophic metabolism into heterotrophic hosts.
Michael Volpers, Nico J Claassens, Elad Noor, John van der Oost, Willem M de Vos, Servé W M Kengen, Vitor A P Martins Dos Santos   +6 more
doaj   +1 more source

Nitrogen flows from European watersheds to coastal marine waters [PDF]

, 2011
Nitrogen flows from European watersheds to coastal marine waters Executive summary Nature of the problem • Most regional watersheds in Europe constitute managed human territories importing large amounts of new reactive nitrogen.
Beusen, Arthur, Billen, Gilles, Bouraoui, Faycal, Curtis, Chris, Ganeshram, Raja, Garnier, Josette, Grizzetti, Bruna, Howarth, Robert, Humborg, Christoph, Johnes, Penny, Kaste, Oyvind, Kortelainen, Pirkko, Lancelot, Christiane, Leip, Adrian, Lepisto, Ahti, Silvestre, Marie, Smedburg, Erik, Voss, Maren   +17 more
core  

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

Proceedings of the National Academy of Sciences, 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.
Ingalls, A. E, Shah, S. R, Hansman, R. L, Aluwihare, L. I, Santos, G. M, Druffel, E. R. M, Pearson, A.   +6 more
openaire   +5 more sources

Life on the Edge: Ecosystem Features of Lakes Across a Mountain–Prairie Elevation Gradient in Western Canada

Ecohydrology, Volume 19, Issue 1, January‐February 2026.
ABSTRACT Ecological transition zones such as mountain elevation gradients can influence the function and productivity of lakes through changes in climatic characteristics and catchment composition (i.e., land use/land cover). However, surveys of limnological features along such ecological transition zones show variable patterns, making it difficult to ...
Paola Ayala‐Borda, Jean‐François Lapierre, Milla Rautio, Sarah Ellen Johnston, Matthew J. Bogard   +4 more
wiley   +1 more source

Benthic oxygen exchange in a live coralline algal bed and an adjacent sandy habitat: an eddy covariance study [PDF]

, 2015
Coralline algal (maerl) beds are widespread, slow-growing, structurally complex perennial habitats that support high biodiversity, yet are significantly understudied compared to seagrass beds or kelp forests.
Attard, Karl M., Burdett, Heidi L., Glud, Ronnie N., Kamenos, Nicholas A., Stahl, Henrik, Turner, Gavin   +5 more
core   +2 more sources

Significant Role for Microbial Autotrophy in the Sequestration of Soil Carbon [PDF]

Applied and Environmental Microbiology, 2012
ABSTRACT Soils were incubated for 80 days in a continuously labeled 14 CO 2 atmosphere to measure the amount of labeled C incorporated into the microbial biomass. Microbial assimilation of 14 C differed between soils and accounted for 0.12% to 0.59% of soil ...
Hongzhao, Yuan, Tida, Ge, Caiyan, Chen, Anthony G, O'Donnell, Jinshui, Wu   +4 more
openaire   +2 more sources

Effects of culture modes on polyglucan accumulation and molecular weight distribution in Galdieria sulphuraria strains

Journal of Chemical Technology &Biotechnology, Volume 101, Issue 1, Page 200-210, January 2026.
Abstract BACKGROUND This study investigated the effects of different culture modes – autotrophy, mixotrophy and heterotrophy – on polyglucan accumulation and molecular weight distribution in four Galdieria sulphuraria strains. Understanding the impact of these culture modes helps optimize the production of reserve carbohydrates and modify their ...
Carlos A. Montenegro‐Herrera, Mariana Manzoni Maroneze, María E. Rodríguez‐Alegría, Alfredo Martinez   +3 more
wiley   +1 more source