Results 71 to 80 of about 9,091 (215)

Springtime upwelling conditions influence microbial communities and dissolved thiamin compounds in the California Current Ecosystem

open access: yesLimnology and Oceanography, Volume 70, Issue 5, Page 1386-1403, May 2025.
Abstract Understanding dissolved concentrations of the essential coenzyme thiamin (vitamin B1) can provide insights into the biological controls on highly productive upwelling systems such as the California Current Ecosystem. To connect thiamin availability with microbial communities in the California Current Ecosystem, we measured concentrations of ...
Kelly C. Shannon   +13 more
wiley   +1 more source

Flora algal de la cuenca del río Guadalquivir: Su valor en la determinación de la ecorregionalización de la cuenca [PDF]

open access: yes, 2018
In compliance with the Water Framework Directive of the European Union, we needed to diagnose the ecologic quality of the different sections of the rivers of the Guadalquivir basin. In order to establish a regional classification of the water bodies by a
Casco, Maria Adela   +5 more
core   +2 more sources

SOME REMARKS ON THE TAXONOMY OF CYANOPHYCEAE [PDF]

open access: yesActa Botanica Neerlandica, 1966
Together with the class of the Schizomycetes (bacteria) the Cyanophyceae belong to the division of the Schizophyta which division differs from all other plant divisions by lacking a nucleus. However, the central part of their cells is a nuclear equivalent (Procaryota).
openaire   +2 more sources

Morphological and Molecular Diversity of Phytoplankton in Beibu Gulf, Northern South China Sea

open access: yesEcology and Evolution, Volume 15, Issue 4, April 2025.
This study explored phytoplankton diversity and environmental drivers in Beibu Gulf based on morphology and metabarcoding. The findings reveal that morphology better reflected phytoplankton abundance while metabarcoding revealed the actual phytoplankton diversity.
Shalini Thevarajan   +7 more
wiley   +1 more source

Phytoplankton in Coqueiro Lake (Pantanal de Poconé, Mato Grosso, Brazil)

open access: yesBiotemas, 2015
Studies on floristic composition are key to understand qualiquantitative changes on phytoplankton assemblages over the year. Spatial-temporal variation in composition, richness, frequency of occurrence, and abundance (semi-quantitative) of the ...
Sandra Francisca Marçal   +1 more
doaj   +3 more sources

Kelimpahan dan Kelompok Fitoplankton di Perairan Luar Teluk Wondama, Provinsi Papua Barat [PDF]

open access: yes, 2018
Kelimpahan sel fitoplankton di perairan laut tergantung pada kualitas kelompok fitoplakton dan parameter oseanografi. Penelitian bertujuan mengetahui kelimpahan dan kelompok fitoplankton serta hubungannya dengan suhu, pH, salinitas, amonia, nitrat, dan ...
Alianto, A. (Alianto)   +2 more
core  

Flora algal del río La Magdalena Distrito Federal, México

open access: yesBotan‪ical Sciences, 2001
La flora algal de tres localidades del río La Magdalena, está constituida por 72 especies con las siguientes proporciones: 63 Bacillariophyceae, seis Cyanophyceae, una Chlorophyceae, una Ulvophyceae y una Charophyceae.
Mónica Ramírez-Vázquez   +5 more
doaj   +1 more source

Microalgal community structure in experimental carp-pangasiid catfish polyculture ponds [PDF]

open access: yes, 2005
Microalgal community structure in experimental carp-pangasiid catfish polyculture ponds under four different stocking rates (treatments) each with three replications in the Field Laboratory of the Faculty Fisheries, Bangladesh Agricultural University ...
Haque, M.M.   +3 more
core  

Algas perifíticas em dois ambientes do baixo rio Doce (lagoa Juparanã e rio Pequeno – Linhares, Estado do Espírito Santo, Brasil): variação espacial e temporal - DOI: 10.4025/actascibiolsci.v30i4.535

open access: yesActa Scientiarum: Biological Sciences, 2008
A pesquisa objetivou avaliar a variação espacial e temporal da comunidade de algas perifíticas em dois ambientes do baixo rio Doce: lagoa Juparanã e rio Pequeno.
Bruna Cavati   +1 more
doaj   +1 more source

CYANOPHYCEAE, EUGLENOPHYCEAE, CHLOROPHYCEAE, ZYGNEMATOPHYCEAE Y CHAROPHYCEAE EN ARROZALES DE CHILE CYANOPHYCEAE, EUGLENOPHYCEAE, CHLOROPHYCEAE, ZYGNEMATOPHYCEAE AND CHAROPHYCEAE IN CHILEAN RICE PADDIES

open access: yesGayana: Botanica, 2000
Se realizó un estudio taxonómico de ciertos grupos de algas en algunos arrozales de Chile provenientes de 15 localidades comprendidas entre la VI y VIII regiones. Se analizó un total de 31 muestras colectadas en enero de 1997. Se determinó un total de 40
Iris Pereira   +2 more
doaj  

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