Results 71 to 80 of about 1,449 (181)

Initial Assessment of the Detectability of Cyanotoxin Occurrence Using PACE Satellite Observations

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Microcystin is a major public health hazard during freshwater cyanobacterial blooms, yet its remote detection remains challenging because it lacks any direct optical absorption features. We demonstrate that hyperspectral observations from NASA's PACE Ocean Color Instrument (OCI) can be used to detect elevated microcystin concentrations by ...
Denesh Karunakaran, Ardeshir Ebtehaj, Lucas Clark Burnette, Miki Hondzo, Leif Olmanson   +4 more
wiley   +1 more source

Acclimation of Charophytes to Spectral Composition of Light at Limiting Irradiances

International Review of Hydrobiology, Volume 111, Issue 1, June 2026.
ABSTRACT Irradiance is regarded as a key factor determining the maximum colonization depth (Z0) of submerged macrophytes. However, the relevance of acclimation capabilities to spectral composition under such low‐light conditions remains poorly understood.
Alena‐Maria Maidel, Vanessa Fabienne Bischoff, Hendrik Schubert   +2 more
wiley   +1 more source

Study of influencing factors to chromophoric dissolved organic matter absorption properties from fluorescence features in Taihu lake in autumn

Journal of Limnology, 2013
In order to identify the components of chromophoric dissolved organic matter (CDOM), confirm the influence of components to the absorption coefficient of CDOM (aCDOM), and estimate aCDOM from fluorescence spectra, fluorescence and optical measurements of
Chuang-Chun Huang, Yun-Mei Li, Hao Yang, De-Yong Sun, Liang-Jiang Xu, Xia Chen   +5 more
doaj   +1 more source

Carbon source and weather in coastal North Carolina

Limnology and Oceanography, Volume 71, Issue 6, June 2026.
Abstract The increasing frequency of extreme weather events, including tropical cyclones, is altering the delivery and quality of organic matter (OM) exported from landscapes to estuaries. However, the mechanisms regulating these shifts, especially during multi‐year climatic oscillations, remain poorly understood.
Christopher L. Osburn, Thomas S. Bianchi, Hans W. Paerl, Nathan S. Hall, Alexandria G. Hounshell, Jacob C. Rudolph, Ruchi Bhattacharya, Ryan W. Paerl   +7 more
wiley   +1 more source

CDOM Sources and Photobleaching Control Quantum Yields for Oceanic DMS Photolysis

Environmental Science & Technology, 2016
Photolysis is a major removal pathway for the biogenic gas dimethylsulfide (DMS) in the surface ocean. Here we tested the hypothesis that apparent quantum yields (AQY) for DMS photolysis varied according to the quantity and quality of its photosensitizers, chiefly chromophoric dissolved organic matter (CDOM) and nitrate.
Martí Galí, David J. Kieber, Cristina Romera-Castillo, Joanna D. Kinsey, Emmanuel Devred, Gonzalo L. Pérez, George R. Westby, Cèlia Marrasé, Marcel Babin, Maurice Levasseur, Carlos M. Duarte, Susana Agustí, Rafel Simó   +12 more
openaire   +5 more sources

Delineating bio-optical characteristics to enhance spatial-based quantification of CDOM in clear to turbid waters

International Journal of Applied Earth Observations and Geoinformation
Accurate remote sensing estimates of inland water colored dissolved organic matter (CDOM) are dramatically challenged by the dynamics of bio-optical characteristics, in which water biochemical driving mechanisms are particularly complex and highly ...
Jiale Jin, Farong Chen, Guangrui Yang, Zhishan Ye, Jianhong Li, Tao Huang, Changchun Huang   +6 more
doaj   +1 more source

Terrestrial CDOM in lakes of Yamal Peninsula

, 2018
In this study, we analyze interactions in lake and lake catchment systems of a continuous permafrost area. We assessed colored dissolved organic matter (CDOM) absorption at 440 nm (a(440)(CDOM)) and absorption slope (S300-500) in lakes using field sampling and optical remote sensing data for an area of 350 km(2) in Central Yamal, Siberia.
Dvornikov, Yury, Leibman, Marina, Heim, Birgit (Dr.), Bartsch, Annett, Herzschuh, Ulrike (Prof. Dr.), Skorospekhova, Tatiana, Fedorova, Irina, Khomutov, Artem, Widhalm, Barbara, Gubarkov, Anatoly, Rößler, Sebastian   +10 more
openaire   +2 more sources

Seasonal dynamics in dissolved organic matter, hydrogen peroxide, and cyanobacterial blooms in Lake Erie

Frontiers in Marine Science, 2016
Hydrogen peroxide (H2O2) has been suggested to influence cyanobacterial community structure and toxicity. However, no study has investigated H2O2 concentrations in freshwaters relative to cyanobacterial blooms when sources and sinks of H2O2 may be ...
Rose M. Cory, Timothy W. Davis, Gregory J. Dick, Gregory J. Dick, Tom eJohengen, Vincent J. Denef, Michelle eBerry, Sarah E. Page, Sarah E. Page, Susan B. Watson, Kate eYuhas, George W. Kling   +11 more
doaj   +1 more source

Processing BGC-Argo CDOM concentration at the DAC level [PDF]

, 2017
In the open ocean, Colored Dissolved Organic Matter (CDOM) is the fraction of the total Dissolved Organic Matter (DOM), composed by a mixture of chemically complex algal degradation products that interact with light. CDOM absorbs solar radiation in the UV and visible ranges (Bricaud et al., 1981) and, if illuminated, re-emits light as fluorescence (i.e.
Schmechtig, Catherine, Organelli, Emanuele, Poteau, Antoine, Claustre, Hervé, D'Ortenzio, Fabrizio   +4 more
openaire   +1 more source

Spatial and temporal distribution of coloured dissolved organic matter in a hypertrophic freshwater lagoon

Journal of Limnology, 2015
A dataset of 224 Medium Resolution Imaging Spectrometer (MERIS) full resolution satellite images were processed to retrieve the concentration of coloured dissolved organic matter (CDOM) in a hypertrophic estuary (Curonian Lagoon, Lithuania and Russia ...
Diana Vaičiūtė, Mariano Bresciani, Marco Bartoli, Claudia Giardino, Martynas Bučas   +4 more
doaj   +1 more source