Results 71 to 80 of about 3,029 (179)

Topic Modeling of Fatty Acid Studies: Evaluating Environmental Changes in Freshwater Ecosystems

International Review of Hydrobiology, Volume 111, Issue 1, June 2026.
ABSTRACT Fatty acids (FAs) are biochemical molecules with vital structural and metabolic functions in all living organisms. Over the last decades, FA analysis in ecological studies has garnered significant attention due to its diverse applicability, such as taxonomic support for species identification, investigations on trophic interactions, and ...
A. C. Campos, B. Gücker, I. G. Boëchat
wiley   +1 more source

Natural Polyhydroxyalkanoates—An Overview of Bacterial Production Methods

Molecules
Polyhydroxyalkanoates (PHAs) are intracellular biopolymers that microorganisms use for energy and carbon storage. They are mechanically similar to petrochemical plastics when chemically extracted, but are completely biodegradable.
Ivo Fukala, Igor Kučera
doaj   +1 more source

Drivers of Greenhouse Gas Emissions in Tropical Riverine Systems Across a Gradient of Human Impact

International Review of Hydrobiology, Volume 111, Issue 1, June 2026.
ABSTRACT Tropical lotic ecosystems are important sources of greenhouse gas emissions, yet the magnitude and variability of such emissions remain poorly constrained. Here, we quantified spatial and short‐term temporal variability of carbon dioxide (CO2) and methane (CH4) fluxes across tropical riverine systems spanning a gradient of human impact, while ...
João Miguel Merces Bega, Murilo de Souza Ferreira, Nícolas Reinaldo Finkler, Carlos Eduardo de Campos Jordão, Davi Gasparini Fernandes Cunha   +4 more
wiley   +1 more source

Urea provides an important nitrogen source for microbial populations in an ultraoligotrophic sea

Limnology and Oceanography, Volume 71, Issue 6, June 2026.
Urea is an organic nitrogen (N) compound directly utilized by both heterotrophic prokaryotes and some photoautotrophs. Reports of either ambient urea concentrations or urea uptake rates from the ultraoligotrophic eastern Mediterranean Sea are lacking. We investigated urea distribution and uptake in the upper water column in the Levantine basin during ...
Alon Blachinsky, Tal Ben Ezra, Shiran Gozali, Anat Tsemel, Dan Tchernov, Mark Altabet, Ilana Berman‐Frank, Michael David Krom   +7 more
wiley   +1 more source

Warming enhances protozooplankton top‐down control and nutrient competition

Limnology and Oceanography, Volume 71, Issue 6, June 2026.
Abstract Protozooplankton regulate microbial food webs through top‐down control and nutrient cycling, yet their grazing impacts under ocean warming, particularly in subsurface chlorophyll maximum (SCM) layers, remain poorly understood. This study investigated spatial and seasonal variability in protozooplankton grazing in the northern East China Sea ...
Eunbi Lee, Chan‐Woo Kwon, Hyeong Kyu Kwon, Yoonja Kang   +3 more
wiley   +1 more source

Putting the N in dinoflagellates

Frontiers in Microbiology, 2013
The cosmopolitan presence of dinoflagellates in aquatic habitats is now believed to be a direct consequence of the different trophic modes they have developed through evolution.
Steve eDagenais-Bellefeuille, David eMorse   +1 more
doaj   +1 more source

Warming influences nutrient removal in mesocosms across different substrates

Limnology and Oceanography, Volume 71, Issue 6, June 2026.
Abstract Climate change is increasing stream temperatures globally, likely impacting stream ecosystem processes. We conducted a stream warming experiment at the Notre Dame Experimental Mesocosm Facility using N = 24 recirculating mesocosms to examine the effect of warming on biofilm colonization of organic and inorganic substrata and rates of nutrient ...
Abagael N. Pruitt, Jennifer L. Tank, Caroline G. T. Anscombe, Mitchell J. Liddick, Elise D. Snyder, Emma M. Thrift‐Cahall, Erik M. Curtis, Anna E. S. Vincent   +7 more
wiley   +1 more source

Autotrophic and Heterotrophic Growth Conditions Modify Biomolecole Production in the Microalga Galdieria sulphuraria (Cyanidiophyceae, Rhodophyta)

Marine Drugs, 2020
Algae have multiple similarities with fungi, with both belonging to the Thallophyte, a polyphyletic group of non-mobile organisms grouped together on the basis of similar characteristics, but not sharing a common ancestor.
Roberto Barone, Lorenzo De Napoli, Luciano Mayol, Marina Paolucci, Maria Grazia Volpe, Luigi D’Elia, Antonino Pollio, Marco Guida, Edvige Gambino, Federica Carraturo, Roberta Marra, Francesco Vinale, Sheridan Lois Woo, Matteo Lorito   +13 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

Biosynthesis of Ascorbic Acid as a Glucose-Induced Photoprotective Process in the Extremophilic Red Alga Galdieria partita

Frontiers in Microbiology, 2020
The extremophilic red alga Galdieria partita is a facultative heterotroph that occupies mostly low-light microhabitats. However, the exceptional detection of abundant populations of G.
Han-Yi Fu, Shao-Lun Liu, Yin-Ru Chiang
doaj   +1 more source