Results 41 to 50 of about 9,561 (238)

Common carp (Cyprinus carpio L.) alters its feeding niche in response to changing food resources: direct observations in simulated ponds [PDF]

open access: yes, 2010
We used customized fish tanks as model fish ponds to observe grazing, swimming, and conspecific social behavior of common carp (Cyprinus carpio) under variable food-resource conditions to assess alterations in feeding niche.
APHA   +32 more
core   +3 more sources

Antitumor activity of C-phycocyanin from Arthronema africanum (Cyanophyceae)

open access: yesBrazilian Archives of Biology and Technology, 2014
Pure C-phycocyanin (C-PC) was isolated from Arthronema africanumto evaluate its potential antitumor effects in vivo and in vitro. Experimental myeloid Graffi tumor in hamsters was used as a model.
Elena Gardeva   +5 more
doaj   +1 more source

Calcareous concretions in the Levriere (tributary of the Epte, secondary tributary of the Seine, Eure department) [Translation from: Bull.Ass.fr.Etud.Quaternaire 1973(2), 79-87, 1973] [PDF]

open access: yes, 1986
From research carried, out on a section of the Levriere, concretions (granules, nodules, which were sometimes joined together) partly covering the river ”bottom” were observed.
Adolphe, J.P., Rofe, G.
core  

Four novel taxa of cyanobacteria from a unique thermal cave habitat in Vromoner Canyon, Albania

open access: yesJournal of Phycology, Volume 61, Issue 5, Page 1394-1422, October 2025.
Abstract Thermal and cave habitats on nearly all continents have been a substantial source of new cyanobacterial genotypes and morphotypes that expanded with the dawn of the era of molecular phylogenetics. In this study, we investigated the cyanobacterial flora of an extreme habitat of recently discovered caves with sulfur‐rich thermal springs, using ...
Jan Pokorný   +3 more
wiley   +1 more source

Alge v velikem ali priobalnem jezeru v Fiesi, Slovenija

open access: yesNatura Sloveniae, 2003
V različnih letnih časih med letoma 1998 in 2000 smo vzorčevali perifitonske in planktonske alge v priobalnem jezeru v Fiesi - edinem brakičnem jezeru v Sloveniji.
Aleksandra Krivograd Klemenčič
doaj   +1 more source

Microbial Activity Response to Solar Radiation across Contrasting Environmental Conditions in Salar de Huasco, Northern Chilean Altiplano [PDF]

open access: yes, 2016
Indexación: Web of Science; Scopus.In high altitude environments, extreme levels of solar radiation and important differences of ionic concentrations over narrow spatial scales may modulate microbial activity.
Dorador, C   +8 more
core   +2 more sources

Taxonomic History and State of Knowledge of the Marine Species in Nostocales (Cyanoprokaryote) From the Mexican Atlantic

open access: yesEcology and Evolution, Volume 15, Issue 8, August 2025.
In this manuscript we contribute a revision of Cyanoprokaryotes Nostocales in the Gulf of Mexico and the Mexican Caribbean; the list of species was updated taxonomically. Also, the historical analysis of their taxonomy was carried out. ABSTRACT Cyanoprokaryotes are organisms that perform oxygenic photosynthesis.
Ernesto Cabrera‐Becerril   +4 more
wiley   +1 more source

The role of light quality and species richness in shaping phytoplankton communities

open access: yesLimnology and Oceanography, Volume 70, Issue 8, Page 2097-2108, August 2025.
Abstract In natural water bodies, the light spectrum changes with depth, often toward a higher proportion of blue light. While spectral niche partitioning and functional redundancy are important concepts, our understanding of how light spectrum changes affect phytoplankton communities is limited.
Vanessa Marzetz   +4 more
wiley   +1 more source

Hydro-biological assessment of Tumaria reservoir, Kashipur (Udham Singh Nagar)

open access: yesEnvironment Conservation Journal, 2018
The present study was under taken to assess the physico-chemical parameters and phytoplanktonic diversity of Tumaria reservoir Kashipur in the District Udham Singh Nagar, Uttarakhand, from January 2017 to December 2017.
Pramod Kumar, Radhe Shyam
doaj   +1 more source

Qualitative and Quantitative Aquatic Algal Data Compilation to Determine Macrotrends [PDF]

open access: yes, 1985
A data base of the algae of Arkansas has been initiated by the selection of a relational data base management system. The system was chosen to be readily available for microcomputers using MS- or PC-DOS.
Meyer, Richard L.
core   +1 more source

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