Results 21 to 30 of about 13,506 (299)

Diatom metabarcoding and microscopic analyses from sediment samples at Lake Nam Co, Tibet: The effect of sample-size and bioinformatics on the identified communities

Ecological Indicators, 2021
Diatoms (Bacillariophyceae) are characterized by silicified cell walls that favor their long-term preservation in sediments, therefore widely used as bioindicators of present and past water conditions.
Wengang Kang, Sten Anslan, Nicole Börner, Anja Schwarz, Robin Schmidt, Sven Künzel, Patrick Rioual, Paula Echeverría-Galindo, Miguel Vences, Junbo Wang, Antje Schwalb   +10 more
doaj   +1 more source

Herbicide effects on freshwater benthic diatoms: Induction of nucleus alterations and silica cell wall abnormalities [PDF]

, 2008
Benthic diatoms are well known bio-indicators of river pollution by nutrients (nitrogen and phosphorus). Biological indexes, based on diatom sensitivity for non-toxic pollution, have been developed to assess the water quality.Nevertheless, they are not ...
Silvestre, Jérôme, Pinelli, Eric, Delmas, François, Debenest, Timothée, Coste, Michel   +4 more
core   +1 more source

Effects of Epibiotic Diatoms on the Productivity of the Calanoid Copepod Acartia tonsa (Dana) in Intensive Aquaculture Systems

Frontiers in Marine Science, 2021
We evaluated here the effects of the epibiotic diatom Tabularia sp. on the productivity of the calanoid copepod Acartia tonsa (Dana) for assessing their risk on copepod intensive aquaculture industry for the provision of live feed.
Yen-Ju Pan, Yen-Ju Pan, Wei-Lung Wang, Jiang-Shiou Hwang, Jiang-Shiou Hwang, Jiang-Shiou Hwang, Sami Souissi   +6 more
doaj   +1 more source

Diatom Biodiversity and Speciation Revealed by Comparative Analysis of Mitochondrial Genomes

Frontiers in Plant Science, 2022
Diatoms (Bacillariophyta) constitute one of the most diverse and ecologically significant groups of phytoplankton, comprising 100,000–200,000 species in three classes Bacillariophyceae, Mediophyceae, and Coscinodiscophyceae.
Yichao Wang, Yichao Wang, Yichao Wang, Yichao Wang, Shuya Liu, Shuya Liu, Shuya Liu, Jing Wang, Jing Wang, Jing Wang, Yanxin Yao, Yanxin Yao, Yanxin Yao, Yanxin Yao, Yang Chen, Yang Chen, Yang Chen, Yang Chen, Qing Xu, Qing Xu, Qing Xu, Qing Xu, Zengxia Zhao, Zengxia Zhao, Nansheng Chen, Nansheng Chen, Nansheng Chen, Nansheng Chen   +27 more
doaj   +1 more source

Evaluating Alternative Metacommunity Hypotheses for Diatoms in the McMurdo Dry Valleys Using Simulations and Remote Sensing Data

Frontiers in Ecology and Evolution, 2020
Diatoms are diverse and widespread freshwater Eukaryotes that make excellent microbial subjects for addressing questions in metacommunity ecology. In the McMurdo Dry Valleys of Antarctica, the simple trophic structure of glacier-fed streams provides an ...
Eric R. Sokol, Eric R. Sokol, J. E. Barrett, Tyler J. Kohler, Diane M. McKnight, Mark R. Salvatore, Lee F. Stanish   +6 more
doaj   +1 more source

Community- and population-level changes in diatom size structure in a subarctic lake over the last two centuries [PDF]

PeerJ, 2015
Climate change over the last two centuries has been associated with significant shifts in diatom community structure in lakes from the high arctic to temperate latitudes.
Elizabeth A. Kerrigan, Andrew J. Irwin, Zoe V. Finkel   +2 more
doaj   +2 more sources

Diatom-based models for inferring past water chemistry in western Ugandan crater lakes [PDF]

, 2012
Diatom surface sediment samples and corresponding water chemistry were collected from 56 lakes across a natural conductivity gradient in western Uganda (reflecting a regional climatic gradient of effective moisture) to explore factors controlling diatom ...
David Ryves (1255542), Mills, Keely, Ryves, David, Keely Mills (1252404)   +3 more
core   +1 more source

Insights into the transfer of silicon isotopes into the sediment record [PDF]

Biogeosciences, 2016
The first δ30Sidiatom data from lacustrine sediment traps are presented from Lake Baikal, Siberia. Data are compared with March surface water (upper 180 m) δ30SiDSi compositions for which a mean value of +2.28‰ ±  0.09 (95 % confidence) is derived.
V. N. Panizzo, G. E. A. Swann, A. W. Mackay, E. Vologina, M. Sturm, V. Pashley, M. S. A. Horstwood   +6 more
doaj   +1 more source

Learning Diatoms Classification from a Dry Test Slide by Holographic Microscopy [PDF]

Sensors, 2020
Diatoms are among the dominant phytoplankters in marine and freshwater habitats, and important biomarkers of water quality, making their identification and classification one of the current challenges for environmental monitoring. To date, taxonomy of the species populating a water column is still conducted by marine biologists on the basis of their ...
Pasquale Memmolo, Pierluigi Carcagnì, Vittorio Bianco, Francesco Merola, Andouglas Gonçalves da Silva Silva Junior, Luiz Marcos Garcia Gonçalves, Pietro Ferraro, Cosimo Distante   +7 more
openaire   +4 more sources

Evaluation of L/D ratio in a water-related case for the differentiation between drowning and postmortem immersion

Forensic Science International: Synergy, 2019
It is a difficult task to determine the cause of death for decomposed bodies found in water. Diatom test has been shown to provide supportive evidence for the diagnosis of drowning.
Zhigang Li, Bo Wu, Xiao Cheng, Yunying Wu, Pingping Zhang, He Shi, Dongyun Zheng, Jianding Cheng, Chao Liu, Jian Zhao   +9 more
doaj   +1 more source