Results 31 to 40 of about 13,399 (188)

К таксономии, морфологии и распространению редкого вида Navicula schmassmannii Hust. (Bacillariophyta) [PDF]

open access: yes, 2017
В фитопланктоне водоемов и водотоков Крайнего Севера Западной Сибири (п-ова Ямал и Тазовский) с помощью сканирующей электронной микроскопии впервые обнаружен редкий вид – Humidophila schmassmannii.
Генкал, С.И.   +1 more
core   +1 more source

Diatomáceas perifíticas em um sistema eutrófico brasileiro (Reservatório do Iraí, estado do Paraná) Periphytic diatoms in a Brazilian eutrophic system (Iraí reservoir, Paraná state)

open access: yesActa Botânica Brasílica, 2010
O estudo sobre a diversidade das diatomáceas do reservatório do Iraí ampliou o conhecimento da flora diatomológica perifítica de ambientes eutróficos do estado do Paraná e contribuiu para subsidiar futuros trabalhos que utilizem diatomáceas como ...
Angela Maria da Silva   +3 more
doaj   +1 more source

The diatom communities from Apuseni Mountains: a first approach on crenic diatom flora

open access: yesStudia Universitatis Babeș-Bolyai. Biologia
The unique geomorphological and hydrological characteristics along with the stable abiotic parameters have shaped springs into suitable aquatic habitats for a high number of microorganisms.
Anca-Mihaela Șuteu   +2 more
doaj   +1 more source

A comparative analysis of phytoplankton diversity and abundance during monsoon season in selected beels (wetlands) of Assam, India [PDF]

open access: yes, 2017
Water collected from 8 selected floodplain wetlands (beels) of Brahmaputra valley basin were examined using both filtered method (FM) and sedimentation method (SM) for the assessment of phytoplankton diversity and abundance.
Bhattacharjya, B. K.   +2 more
core   +2 more sources

Phytoplankton growth and potential cyanotoxin production differ in response to nitrogen and phosphorus amendments in late summer communities from Kabetogama Lake (Minnesota, United States)

open access: yesJournal of Phycology, EarlyView.
Abstract Cyanotoxins such as microcystin (MC), cylindrospermopsin, and saxitoxin are secondary metabolites that are rich in nitrogen (N). Most cyanobacteria grow best on reduced inorganic N (ammonium, NH4), but when NH4 is absent, cyanobacteria can activate physiological pathways to process other N forms (e.g., nitrate; NO3).
James H. Larson   +7 more
wiley   +1 more source

Molecular evolution of candidate male reproductive genes in the brown algal model Ectocarpus [PDF]

open access: yes, 2016
Background: Evolutionary studies of genes that mediate recognition between sperm and egg contribute to our understanding of reproductive isolation and speciation. Surface receptors involved in fertilization are targets of sexual selection, reinforcement,
De Clerck, Olivier   +2 more
core   +6 more sources

Microbial mats and thalassinid shrimp: Spatial and geochemical interactions in a modern intertidal environment

open access: yesSedimentology, EarlyView.
ABSTRACT This research examines the spatial and geochemical interactions between mat‐forming microorganisms and thalassinid shrimp in an intertidal flat situated on the shores of Willapa Bay, Washington, USA. The study serves as a contemporary analog for the relationships between mats and burrowing organisms in deep time.
Brette S. Harris   +9 more
wiley   +1 more source

Phytoplankton composition of Sazlidere Dam lake, Istanbul, Turkey [PDF]

open access: yesMaejo International Journal of Science and Technology, 2013
The phytoplankton composition of Sazlidere Dam lake was studied at 5 sampling sites between December 2003 - November 2005. A total of 67 taxa were recorded, representing Bacillariophyta (31), Chlorophyta (18), Cyanophyta (9), Chrysophyta (1), Cryptophyta
Nese Yilmaz
doaj  

Ficoflora de ambientes lênticos: estudo preliminar da região de Charqueadas, Rio Grande do Sul, Brasil, com vistas à avaliação ambiental Metaphyton, benthos and phytoplantonic communities in lentic systems in the region of Charqueadas Rio Grande do Sul, Brazil

open access: yesActa Botânica Brasílica, 1987
São apresentados os resultados do estudo do metafíton, bentos e de comunidades fitoplanctônicas ocorrentes em ambientes lênticos de Charqueadas e municípios vizinhos, região esta sujeita à influência de mineração e processamento de carvão mineral.
Zulanira Meyer Rosa   +5 more
doaj   +1 more source

Assessment of Preservation and Extraction Methods for Environmental DNA in Sediments

open access: yesEnvironmental DNA, Volume 8, Issue 3, May–June 2026.
We assessed how different preservation methods (freezing, room temperature, silica gel, Longmire buffer) affect eDNA metabarcoding results for bacterial, fungal, microeukaryotic, and metazoan communities in marine and freshwater sediments. Results demonstrate taxonomic‐ and habitat‐specific responses to preservation methods, providing evidence‐based ...
Alessia Guerrieri   +6 more
wiley   +1 more source

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