Results 71 to 80 of about 4,759 (213)

Refining techniques for high‐frequency monitoring of chlorophyll a fluorescence in estuarine systems

Limnology and Oceanography: Methods, Volume 24, Issue 9, September 2026.
Abstract Concentrations of the photosynthetic pigment chlorophyll a are commonly used as a proxy for phytoplankton biomass in aquatic systems. Traditional methods for extracting chlorophyll a in discrete samples limit measurement frequency, while in situ sensor technology provides high frequency chlorophyll a fluorescence measurements at a more ...
Nicole Dix, Hannah Nicklay, Jacob Cianci‐Gaskill, Shannon Dunnigan Kimmel, J. Silas Tanner, Kim Cressman, Steven E. McMurray, Yoshimi M. Rii, Rikke Jeppesen, Rachel Guy, Erik Smith   +10 more
wiley   +1 more source

Characteristics of colored dissolved organic matter (CDOM) in the Arctic outflow in Fram Strait: assessing the changes and fate of terrigenous CDOM in the Arctic Ocean

, 2012
Absorption coefficients of colored dissolved organic matter (CDOM) were measured together with salinity, δ18O, and inorganic nutrients across the Fram Strait.
Granskog, M.A., Stedmon, Colin, de Steur, L., Pavlov, A., Stedmon, C.A., Dodd, P.A., Hansen, E., Amon, R.M.W., Pavlov, A.K.   +8 more
core   +1 more source

The most oligotrophic subtropical zones of the global ocean: similarities and differences in terms of chlorophyll and yellow substance [PDF]

Biogeosciences, 2010
The cores of the subtropical anticyclonic gyres are characterized by their oligotrophic status and minimal chlorophyll concentration, compared to that of the whole ocean. These zones are unambiguously detected by space borne ocean color sensors thanks to
A. Morel, H. Claustre, B. Gentili
doaj   +1 more source

Absorption‐Based Wavelength‐Resolved Hyperspectral Primary Productivity Algorithm for the Northern Gulf of Mexico

Journal of Geophysical Research: Oceans, Volume 131, Issue 9, September 2026.
Abstract The northern Gulf of Mexico (nGOM) is a region of high biological productivity largely influenced by the nutrient input from the Mississippi and Atchafalaya rivers. Prior studies utilizing bio‐optical algorithms to estimate primary production (PP) in this region have generally employed wavelength‐integrated models (WIM) involving attenuation ...
Most Israt Jahan Mili, Steven E. Lohrenz
wiley   +1 more source

Caracterización fisicoquímica y de la MODC de un río receptor de cuenca en el norte de Argentina

Tecnología y ciencias del agua
El presente estudio se centró en la calidad del agua del río Dulce, provincia de Santiago del Estero, Argentina, de vital importancia para la región, que provee agua para consumo humano y para el sistema de riego agrícola. Se realizaron muestreos en mayo,
Marta Leiva, Sara Hurtado-Ferraté, Augusto Wottitz, Ana Ledesma   +3 more
doaj   +1 more source

Chronic disease outcome metadata from German observational studies – public availability and FAIR principles

Scientific Data, 2023
Metadata from epidemiological studies, including chronic disease outcome metadata (CDOM), are important to be findable to allow interpretability and reusability.
Carolina Schwedhelm, Katharina Nimptsch, Wolfgang Ahrens, Hans Martin Hasselhorn, Karl-Heinz Jöckel, Verena Katzke, Alexander Kluttig, Birgit Linkohr, Rafael Mikolajczyk, Ute Nöthlings, Ines Perrar, Annette Peters, Carsten O. Schmidt, Börge Schmidt, Matthias B. Schulze, Andreas Stang, Hajo Zeeb, Tobias Pischon   +17 more
doaj   +1 more source

Volatile Organic Compounds in Rainwater: A New Frontier in Atmosphere–Biosphere Interactions

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 9, September 2026.
Abstract Rainwater is a key vector of atmospheric deposition, linking the atmosphere with terrestrial and aquatic ecosystems. While the inorganic chemistry of precipitation (dominated by sulfate, nitrate, ammonium, and trace metals) has been extensively studied, organic compounds in rainwater have received less attention, and Volatile Organic Compounds
Ana M. Yáñez‐Serrano, Teresa Moreno, Maria Izquierdo, Jorge Pey, Roger Seco, Andrés Alastuey, Josep Peñuelas   +6 more
wiley   +1 more source

DOC and CDOM in roller bottle ambient water.

, 2012
Dissolved organic carbon (DOC) concentration (A and B; n = 6 ± standard deviation) and colored dissolved organic matter (CDOM) fluorescence (maximum fluorescence peak; C, D) during the 21-day roller table incubation.
Jennifer Dickson-Brown (173559), Carol Arnosti (169950), Kai Ziervogel (169988), Christopher L. Osburn (173552), Luke McKay (173539), Andreas Teske (173567), Benjamin Rhodes (173544)   +6 more
core   +1 more source

Excitation-Dependent Fluorescence Quantum Yield for Freshwater Chromophoric Dissolved Organic Matter from Northern Russian Lakes

Journal of Spectroscopy, 2018
Advanced fluorescence analysis within the wide range of excitation wavelengths from 230 to 510 nm accompanied with chromatography was used to study natural chromophoric dissolved organic matter (CDOM) from three freshwater Karelian lakes.
Svetlana Patsaeva, Daria Khundzhua, Oleg A. Trubetskoj, Olga E. Trubetskaya   +3 more
doaj   +1 more source

Regional landscape differences lead to contrasts in the strength of environmental sorting among crustacean zooplankton metacommunities

Oikos, Volume 2026, Issue 8, August 2026.
Processes underlying metacommunity structuring are important for understanding species tracking of environmental change at a landscape scale. Species' functional traits more closely reflect their ecological roles than taxonomy, therefore, adopting a functional approach allows us a better understanding of metacommunity structuring.
Annabelle Fortin‐Archambault, Beatrix E. Beisner, Alison M. Derry   +2 more
wiley   +1 more source