Results 71 to 80 of about 296,177 (193)

Coastal Nitrogen, Phosphorus, and Silicon Sources: Integrating Land, Sea, and Human Inputs

Global Biogeochemical Cycles, Volume 40, Issue 9, September 2026.
Abstract Land‐based human activities have greatly increased inputs of nutrients (nitrogen [N] and phosphorus [P]) to the coastal zone, while also decreasing silicon (Si) export. Here we present a novel synthesis of N, P, and Si sources to coastal waters and use that data set to evaluate: (a) the amount, global spatial distribution, and proportion of N,
John A. Harrison, Arthur H. W. Beusen, Lex (A.F.) Bouwman, Junjie Wang, Xiaochen Liu   +4 more
wiley   +1 more source

Electroporation of Pseudo-nitzschia multiseries v1

, 2017
Describes novel low conductivity media and multipulse electroporation protocol using a NEPA21 Type II pulse generator with settings optimized to balance transfection efficiency with cell viability for this marine diatom.
April Woods, not provided G. Jason Smith
openaire   +1 more source

Domoic Acid Improves the Competitive Ability of Pseudo-nitzschia delicatissima against the Diatom Skeletonema marinoi

Marine Drugs, 2013
Because domoic acid, a neurotoxic secondary metabolite produced by marine diatoms in the genus Pseudo-nitzschia, is hypothesized to be part of a high affinity iron uptake system, we investigated whether domoic acid could improve the competitive ability ...
Emily K. Prince, Friederike Irmer, Georg Pohnert   +2 more
doaj   +1 more source

Spatial Variability in Phytoplankton Response to Projected Increases in Iron and Temperature in the Ross Sea

Journal of Geophysical Research: Oceans, Volume 131, Issue 9, September 2026.
Abstract The Ross Sea supports massive phytoplankton blooms and exhibits the highest marine primary productivity rates due to seasonal relief of iron and light limitations. Although Earth System Models project regional increases in temperature and iron supply, there is uncertainty regarding the response of different phytoplankton communities. To assess
A. Cristi, A. Gutiérrez‐Rodríguez, S. Deppeler, M. Druce, N. G. Barr, C. S. Law   +5 more
wiley   +1 more source

Trends in Aquatic Environmental DNA Research in Alaska

Ecology and Evolution, Volume 16, Issue 7, July 2026.
Environmental DNA (eDNA) analysis is an emerging tool with significant potential to advance biomonitoring, particularly in remote and logistically challenging environments. To evaluate the state of eDNA research in Alaska, we conducted a literature review and a regional survey and results provide the first comprehensive overview of eDNA research in ...
Brandi Kamermans, Maggie Harings, Rachel Lekanoff, Laura E. Timm, Erik Schoen, J. Andrés López, Jessica R. Glass   +6 more
wiley   +1 more source

Opportunistic feeding by Antarctic krill in the eastern Weddell Gyre

Limnology and Oceanography, Volume 71, Issue 7, July 2026.
Abstract Antarctic krill, Euphausia superba, is an important species in the Southern Ocean and is vulnerable to climate change. We studied the carbon sources for krill—specifically pelagic and ice‐associated (sympagic) particulate organic matter (POM), representing phytoplankton and sea‐ice algae, respectively—during March 2019 across three distinct ...
Sebastien Moreau, Hanna M. Kauko, Tone Falkenhaug, Megan Lenss, Anette Wold, Hauke Flores, Katrin Schmidt, Doreen Kohlbach, Philippe Claeys, Magdalena Różańska‐Pluta, Jozef Wiktor   +10 more
wiley   +1 more source

Decadal Shifts Towards Higher Riverine Silicon Relative to Nitrogen and Phosphorus Across High Latitudes

Global Biogeochemical Cycles, Volume 40, Issue 7, July 2026.
Abstract High‐latitude systems are warming faster than the global average, altering the rates of silicon (Si) mobilization from terrestrial to aquatic systems. Dissolved Si (DSi) concentration and its ratio with other nutrients exert strong controls on algae blooms in fresh and marine receiving waters, especially in high‐latitude regions where diatoms ...
Joanna C. Carey, Nicholas J. Lyon, Keira Johnson, Pamela L. Sullivan, Sidney A. Bush, Lienne R. Sethna, Ruth Heindel, Pirkko Kortelainen, Hjalmar Laudon, Diane M. McKnight, Amanda Poste, Antti Raike, Kathi Jo Jankowski   +12 more
wiley   +1 more source

Dissolved Domoic Acid Does Not Improve Growth Rates and Iron Content in Iron-Stressed Pseudo-Nitzschia subcurvata

Frontiers in Marine Science, 2020
Many regions of Antarctica are classified as high nutrient low chlorophyll (HNLC) areas. In these, iron availability is limiting primary productivity and subsequent carbon export.
Jana K. Geuer, Scarlett Trimborn, Scarlett Trimborn, Florian Koch, Florian Koch, Tina Brenneis, Bernd Krock, Boris P. Koch, Boris P. Koch   +8 more
doaj   +1 more source

Tracing the Migration of Fronts in the Pacific Southern Ocean Across the Mid‐Pleistocene Transition

Paleoceanography and Paleoclimatology, Volume 41, Issue 7, July 2026.
Abstract The Southern Ocean is a key driver of global climate variability, yet its dynamics during the Mid‐Pleistocene Transition (MPT; ∼1.25–0.7 Ma) remain poorly understood, especially in the South Pacific sector. The Polar Frontal Zone (PFZ) underwent significant latitudinal shifts during this critical period of climate reorganization.
V. M. Sinnen, O. Esper, M. Duffy, C. R. Riesselman, F. Lamy, T. Frederichs, C. B. Lange   +6 more
wiley   +1 more source

Effects of Organic and Inorganic Nitrogen on the Growth and Production of Domoic Acid by Pseudo-nitzschia multiseries and P. australis (Bacillariophyceae) in Culture

Marine Drugs, 2015
Over the last century, human activities have altered the global nitrogen cycle, and anthropogenic inputs of both inorganic and organic nitrogen species have increased around the world, causing significant changes to the functioning of aquatic ecosystems.
Véronique Martin-Jézéquel, Guillaume Calu, Leo Candela, Zouher Amzil, Thierry Jauffrais, Véronique Séchet, Pierre Weigel   +6 more
doaj   +1 more source