Results 91 to 100 of about 3,733 (202)

Nitrogen and phosphorus uptake kinetics in cultures of two novel picoplankton groups responsible for a recent bloom event in a subtropical estuary (Indian River Lagoon, Florida)

Frontiers in Marine Science
IntroductionSuccessful management and mitigation of harmful algal blooms (HABs) requires an in-depth understanding of the physiology and nutrient utilization of the organisms responsible. We explored the preference of various nitrogen (N) and phosphorus (
Joshua R. Papacek, Patrick W. Inglett, Edward J. Phlips, Margaret A. Lasi   +3 more
doaj   +1 more source

Unbalanced reduction of nutrient loads has created an offshore gradient from phosphorus to nitrogen limitation in the North Sea [PDF]

, 2016
Measures to reduce eutrophication have often led to a more effective decline of phosphorus (P) than nitrogen(N) concentrations. The resultant changes in riverine nutrient loads can cause an increase in the N : Pratios of coastal waters.
Akil, L., Brussaard, C.P.D., Burson, A., Huisman, J., Stomp, M.   +4 more
core   +3 more sources

Blooms of filamentous cyanobacteria reduce zooplankton quality and pelagic food web efficiency

Limnology and Oceanography, Volume 70, Issue S2, Page S69-S83, December 2025.
Abstract Cyanobacterial blooms in marine and freshwater ecosystems have increased in magnitude, frequency, and distribution worldwide during recent decades. Filamentous cyanobacteria are of unsuitable size for mesozooplankton feeding and of poorer nutritional quality than other phytoplankton taxa. The production and quality of higher trophic levels are
Tharindu Bandara, Sonia Brugel, Danny Chun Pong Lau, Iveta Jurgensone, Evelina Griniene, Andrius Garbaras, Laurynas Butkus, Laurynas Bučinskas, Emil Fridolfsson, Jacob Carstensen, Agneta Andersson   +10 more
wiley   +1 more source

Factors Influencing the Diversity of Iron Uptake Systems in Aquatic Microorganisms [PDF]

, 2012
Iron (Fe) is an essential micronutrient for many processes in all living cells. Dissolved Fe (dFe) concentrations in the ocean are of the order of a few nM, and Fe is often a factor limiting primary production.
Desai, Dhwani K., Desai, Falguni D., LaRoche, Julie   +2 more
core   +2 more sources

Exploring the Regional Diversity of Eukaryotic Phytoplankton in the English Channel by Combining High‐Throughput Approaches

MicrobiologyOpen, Volume 14, Issue 6, December 2025.
By combining flow cytometry and high‐throughput sequencing, we reveal seasonal and spatial variations in the size, composition, and diversity of phytoplankton in the English Channel, highlighting the dynamics of pico‐, nano‐, and microphytoplankton and environmental factors, with the Seine Bay as a hotspot of taxonomic and functional diversity ...
Zéline Hubert, Luis Felipe Artigas, Luen‐Luen Li, Claire Dédécker, Sébastien Monchy   +4 more
wiley   +1 more source

Numerical modelling of methyl iodide in the eastern tropical Atlantic [PDF]

, 2013
Methyl iodide (CH3I) is a volatile organic halogen compound that contributes significantly to the transport of iodine from the ocean to the atmosphere, where it plays an important role in tropospheric chemistry.
Hense, I., Hepach, Helmke, Rothe, M., Stemmler, I.   +3 more
core   +2 more sources

Should I stay, or should I go: Anthropogenic noises disrupt early recruitment of subarctic invertebrates

Ecological Applications, Volume 35, Issue 7, October 2025.
Abstract Coastal subarctic systems are inhabited by bivalve and gastropods, which due to their lifecycle and longevity are reliable indicators of ecological alterations in the environment. Recent laboratory studies have shown that young life stages of invertebrates perceive natural sounds, and their settlement, behavior, and fitness could be altered by
Nathália Byrro Gauthier, Thomas Uboldi, Frédéric Olivier, Réjean Tremblay, Laurent Chauvaud, Delphine Mathias, Pascal Lazure, Antoine Frémont, Tarik Meziane, Sylvain Chauvaud, Gesche Winkler   +10 more
wiley   +1 more source

Do light quality and low nutrient concentration favour picocyanobacteria below the thermocline of the oligotrophic Lake Stechlin? [PDF]

, 1997
In May 1995, a short-term study on the vertical distribution of phytoplankton in the holomictic, oligotrophic Lake Stechlin revealed a deep chlorophyll maximum (DCM) due to an increase in phytoplankton biomass below the thermocline. The DCM was dominated
Gervais, Frank, Koschel, Rainer, Padisák, Judit   +2 more
core   +1 more source

BGC‐Argo Floats Reveal Nitrite and Thiosulfate Dynamics in the Oceans With High Spatiotemporal Resolution

Global Biogeochemical Cycles, Volume 39, Issue 10, October 2025.
Abstract Marine oxygen deficient zones (ODZs) play a major role in the Earth's biogeochemical cycles and are responsible for nitrogen and sulfur removal from the oceans. Microbial‐reducing reaction processes generate nitrite (NO2−) and sulfur compounds as intermediaries that may accumulate in these zones.
Mariana B. Bif, Kenneth S. Johnson
wiley   +1 more source

Ecotypic variation in phosphorus-acquisition mechanisms within marine picocyanobacteria [PDF]

Aquatic Microbial Ecology, 2005
Prochlorococcus and Synechococcus are major prokaryotic primary producers in the oligotrophic oceans that may be affected by the climate-related increases in nitrogen fixation and subsequent phosphorus (P) limitation in some parts of the oceans. Evidence that Prochlorococcus populations in the North Pacific subtropical gyre (NPSG) have increased over ...
Moore, Lisa, PhD, Ostrowski, M., Scanlan, D. J., Feren, K., Sweetsir, T.   +4 more
openaire   +1 more source