Search results for "freshwater"
showing 5 items of 285 documents
Three Phages from a Boreal Lake during Ice Cover Infecting Xylophilus, Caulobacter, and Polaromonas Species
2023
Although the important role of microbes in freshwater is well understood, studies on phage–host systems in such environments during ice cover are completely lacking. Here, we describe the isolation and characterization of three new bacteriophages infecting Xylophilus sp., Caudobacter sp., and Polaromonas sp. from freshwater samples taken under the ice cover of Lake Konnevesi, Finland. Lumi, Kuura, and Tiera bacteriophages have tailed icosahedral virions and double-stranded DNA. Lumi is a siphophage with a genome of 80,496 bp, and Kuura and Tiera are podophages, and their genomes are 43,205 and 45,327 bp in length, resembling viruses in the class Caudoviricetes. Their host ranges were very l…
Terrestrial carbohydrates support freshwater zooplankton during phytoplankton deficiency
2016
Article
Inferring phytoplankton community composition with a fatty acid mixing model
2015
Abstract. The taxon specificity of fatty acid composition in algal classes suggests that fatty acids could be used as chemotaxonomic markers for phytoplankton composition. The applicability of phospholipid-derived fatty acids as chemotaxonomic markers for phytoplankton composition was evaluated by using a Bayesian fatty acid-based mixing model. Fatty acid profiles from monocultures of chlorophytes, cyanobacteria, diatoms, euglenoids, dinoflagellates, raphidophyte, cryptophytes and chrysophytes were used as a reference library to infer phytoplankton community composition in five moderately humic, large boreal lakes in three different seasons (spring, summer and fall). The phytoplankton commu…
Темпоральные аспекты моделирования и прогнозирования в экологии
1986
Межведомственный тематический сборник научных трудов по концептуальным, методологическим и методическим вопросам формализации временных отношений (темпоральности) в биоэкологическом прогнозировании, при моделировании экосистемы и ее биотических элементов. Тематика сборника в определенной мере отражает широкий диапазон и многогранность проблемы темпорализма в биоэкологии.
Охрана, экология и этология животных
1986
В сборнике представлены материалы по фаунистическому составу, распространению и экологии редких видов животных, а также видов, имеющих хозяйственное значение, даются рекомендации по увеличению численности редких животных.