Results 111 to 120 of about 4,135 (249)

Benthische Algen ohne Kieselalgen und Armleuchteralgen : Feldführer / [Autoren: Antje Gutowski ; Julia Foerster]. Landesamt für Natur, Umwelt und Verbraucherschutz Nordrhein-Westfalen. [Ministerium für Umwelt und Naturschutz, Landwirtschaft und Verbraucherschutz des Landes Nordrhein-Westfalen] [PDF]

open access: yes, 2009
Benthische Algen sind ein wesentlicher Teil des Ökosystems der Fließgewässer. Verschiedene Verfahren nutzen sie zur Bioindikation. Eines davon ist das PHYLIB-Verfahren (SCHAUMBURG et al. 2004, 2005) zur Bewertung des ökologischen Zustandes.
Foerster, Julia, Gutowski, Antje
core  

Marine forests of the Mediterranean-Atlantic Cystoseira tamariscifolia complex show a southern Iberian genetic hotspot and no reproductive isolation in parapatry [PDF]

open access: yes, 2018
Climate-driven range-shifts create evolutionary opportunities for allopatric divergence and subsequent contact, leading to genetic structuration and hybrid zones.
Airoldi, Laura   +12 more
core   +3 more sources

Extending monitoring with sediment archive approaches: Comparison of biomonitoring, metabarcoding, and biomarkers to assess past phytoplankton dynamics

open access: yesLimnology and Oceanography: Methods, Volume 23, Issue 8, Page 578-593, August 2025.
Abstract Sedimentary archives can provide valuable insights into the study of anthropogenic impacts on marine and limnic ecosystems over centennial and millennial timescales, potentially extending the temporal breadth of observation‐based biomonitoring.
Juliane Romahn   +7 more
wiley   +1 more source

Species of Ulva (Ulvophyceae, Chlorophyta) as indicators of salinity

open access: yesEcological Indicators, 2018
Salinity is one of the main determinants of species diversity in macroalgae. This study analyzes the occurrence of 16 species of the genus Ulva (Ulvaceae, Chlorophyta) in the salinity gradient. Ulva populations originated mainly from shores and estuaries with a minor number occurring in ocean lagoons, coastal lakes, canals and rivers. Ulva species were
openaire   +1 more source

An Ecoregion‐Based Assessment of Lakes in Türkiye With Phytoplankton Metrics and Multimetric Approaches

open access: yesEcohydrology, Volume 18, Issue 5, July‐August 2025.
ABSTRACT This study investigates the environmental characteristics, phytoplankton community dynamics, and ecological status (ES) of lakes in different ecoregions. Significant variations were observed in environmental variables across the lakes. Lake Kuğu, a brackish ecosystem, recorded the highest electrical conductivity (EC = 9810 μS/cm), while Lake ...
Abuzer Çelekli, Özgür Eren Zariç
wiley   +1 more source

Algivore or phototroph?: Plakobranchus ocellatus (Gastropoda) continuously acquires kleptoplasts and nutrition from multiple algal species in nature [PDF]

open access: yes, 2012
The sea slug Plakobranchus ocellatus (Sacoglossa, Gastropoda) retains photosynthetically active chloroplasts from ingested algae (functional kleptoplasts) in the epithelial cells of its digestive gland for up to 10 months.
Chikaraishi, Yoshito   +12 more
core   +4 more sources

The Mechanisms of Codon Reassignments in Mitochondrial Genetic Codes [PDF]

open access: yes, 2007
Many cases of non-standard genetic codes are known in mitochondrial genomes. We carry out analysis of phylogeny and codon usage of organisms for which the complete mitochondrial genome is available, and we determine the most likely mechanism for codon ...
A Reyes   +74 more
core   +4 more sources

Структура та функціонування фітопланктону О.Ониськове [PDF]

open access: yes, 2013
Відомо, що провідна роль у функціонуванні прісноводних екосистем належить фітопланктону, адже він за рахунок фотосинтезу формує потоки енергії і фонд автохтонної органічної речовини у водоймах.
Шелюк, Ю. С., Іщук, Р. А.
core  

Flora en fauna geassocieerd met mosselpopulaties in de Oosterschelde en Voordelta in 2009 [PDF]

open access: yes
In de periode van 5 tot en met 25 augustus 2009 zijn er bemonsteringen uitgevoerd van hangcultuur mosselen, mosselpercelen en MZI’s. In totaal zijn er 30 monsters genomen in de Voordelta en de Oosterschelde.
Brink, A.   +2 more
core   +1 more source

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