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Marvania
''Marvania'' is a genus of green algae in the family Chlorellaceae. The genus name of ''Marvania'' is in honour of Petr Marvan (b.1929), who was a (b.1929) Czech / Czechoslovakian botanist (Algology, Mycology and Lichenology), Hydrobiologist who worked at the Water Research Institute. The genus was circumscribed by František Hindák František () is a masculine Czech and Slovak given name. It is a cognate In historical linguistics, cognates or lexical cognates are sets of words that have been inherited in direct descent from an etymological ancestor in a common pare ... in Arch. Hydrobiol. Suppl. vol.49 on page 268 in 1976. References Trebouxiophyceae genera Chlorellaceae {{green algae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chlorellaceae
Chlorellaceae are a family of green algae in the order Chlorellales. About 250 species are currently accepted in the family. Members of the family are distributed worldwide and are common in a variety of freshwater, terrestrial and marine environments. Members of the family Chlorellaceae are important ecologically, mainly as primary producers. Algae such as ''Chlorella'' are important model organisms for plant physiology and biochemistry, because of they are easy to cultivate and grow rapidly. Additionally, many members are rich in lipids, carbohydrates and vitamins, making them of interest in the field of biotechnology. Meanwhile, genera such as '' Prototheca'' are of clinical significance as pathogens of humans and other animals. Description Members of Chlorellaceae are morphologically diverse and include solitary and colonial forms. Traditionally, the family was circumscribed based on the mode of reproduction (production of autospores), and the family was defined around the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Algae
The green algae (: green alga) are a group of chlorophyll-containing autotrophic eukaryotes consisting of the phylum Prasinodermophyta and its unnamed sister group that contains the Chlorophyta and Charophyta/ Streptophyta. The land plants ( Embryophytes) have emerged deep within the charophytes as a sister of the Zygnematophyceae. Since the realization that the Embryophytes emerged within the green algae, some authors are starting to include them. The completed clade that includes both green algae and embryophytes is monophyletic and is referred to as the clade Viridiplantae and as the kingdom Plantae. The green algae include unicellular and colonial flagellates, most with two flagella per cell, as well as various colonial, coccoid (spherical), and filamentous forms, and macroscopic, multicellular seaweeds. There are about 22,000 species of green algae, many of which live most of their lives as single cells, while other species form coenobia (colonies), long filaments ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Center For Biotechnology Information
The National Center for Biotechnology Information (NCBI) is part of the National Library of Medicine (NLM), a branch of the National Institutes of Health (NIH). It is approved and funded by the government of the United States. The NCBI is located in Bethesda, Maryland, and was founded in 1988 through legislation sponsored by US Congressman Claude Pepper. The NCBI houses a series of databases relevant to biotechnology and biomedicine and is an important resource for bioinformatics tools and services. Major databases include GenBank for DNA sequences and PubMed, a bibliographic database for biomedical literature. Other databases include the NCBI Epigenomics database. All these databases are available online through the Entrez search engine. NCBI was directed by David Lipman, one of the original authors of the BLAST sequence alignment program and a widely respected figure in bioinformatics. GenBank NCBI had responsibility for making available the GenBank DNA seque ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrobiologist
Hydrobiology is the science of life and life processes in water. Much of modern hydrobiology can be viewed as a sub-discipline of ecology but the sphere of hydrobiology includes taxonomy, economic and industrial biology, morphology, and physiology. The one distinguishing aspect is that all fields relate to aquatic organisms. Most work is related to limnology and can be divided into lotic system ecology (flowing waters) and lentic system ecology (still waters). One of the significant areas of current research is eutrophication. Special attention is paid to biotic interactions in plankton assemblage including the microbial loop, the mechanism of influencing algal blooms, phosphorus load, and lake turnover. Another subject of research is the acidification of mountain lakes. Long-term studies are carried out on changes in the ionic composition of the water of rivers, lakes and reservoirs in connection with acid rain and fertilization. One goal of current research is elucidation of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Research Institute (Verbania)
The Water Research Institute ( abbreviated IRSA) in Verbania Pallanza is part of the Water Research Institute of CNR, with headquarters in Rome. From 2002 to 2018 it represented the headquarters of the former Institute of Ecosystem Study (, abbreviated ISE), one of the dismissed institutes of the Consiglio Nazionale delle Ricerche, Italian National Research Council (CNR). Before that, the institute in Verbania was called the Italian Institute of Hydrobiology. Research topics Research at IRSA in Verbania is mostly on Environmental quality, environmental issues, especially on: * limnology, in all its aspects, including biological, physical, chemical, * freshwater ecology, * impact of global change, * conservation and recovery of ecosystems, * aquatic biodiversity and ecosystem functioning, * biology and technology of microorganisms, * applied ecology and biological control. History The institute in Verbania Pallanza started working as a research center in 1938 on Lake Maggiore, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circumscription (taxonomy)
In biological taxonomy, circumscription is the content of a taxon, that is, the delimitation of which subordinate taxa are parts of that taxon. For example, if we determine that species X, Y, and Z belong in genus A, and species T, U, V, and W belong in genus B, those are our circumscriptions of those two genera. Another systematist might determine that T, U, V, W, X, Y, and Z all belong in genus A. Agreement on circumscriptions is not governed by the Codes of Zoological or Botanical Nomenclature, and must be reached by scientific consensus. A goal of biological taxonomy is to achieve a stable circumscription for every taxon. This goal conflicts, at times, with the goal of achieving a natural classification that reflects the evolutionary history of divergence of groups of organisms. Balancing these two goals is a work in progress, and the circumscriptions of many taxa that had been regarded as stable for decades are in upheaval in the light of rapid developments in molecu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
František Hindák
František () is a masculine Czech and Slovak given name. It is a cognate In historical linguistics, cognates or lexical cognates are sets of words that have been inherited in direct descent from an etymological ancestor in a common parent language. Because language change can have radical effects on both the s ... of Francis, Francisco, François and Franz. It can be also surname (feminine: Františková). Notable people with the name include: Given name Arts * Frank Daniel (František Daniel) (1926–1996), Czech film director, producer and screenwriter * František Bartoš (folklorist) (1837–1906), Moravian ethnomusicologist and folklorist *František Bělský, known as Franta Belsky (1921–2000), Czech sculptor * František Bílek (1872–1941), Czech sculptor and architect * František Brikcius, Czech cellist * František Brixi (1732–1771), Czech composer * František Čáp (1913–1972), Czech film director and screenwriter * František Čelakovský (17 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trebouxiophyceae Genera
The Trebouxiophyceae, also known as trebouxiophytes, are a class of green algae, in the division Chlorophyta. Members of this class are single-celled, colonial, or multicellular and are found in freshwater, terrestrial or marine habitats worldwide. Many taxa in the Trebouxiophyceae form symbiotic relationships with other organisms; in particular, the majority of phycobionts within lichens are trebouxiophytes. A number of taxa have also lost the ability to photosynthesize, and have evolved to become parasitic; examples include '' Prototheca'' and '' Helicosporidium''. Trebouxiophyceae was originally defined by ultrastructural characteristics, but is now generally circumscribed based on phylogenetics, particularly based on the 18S rDNA locus. As of 2024, Trebouxiophyceae contains 211 genera and about 925 species. Morphology Members of the Trebouxiophyceae are microscopic or macroscopic organisms which exist in a variety of forms: non-flagellate coccoid or elliptical single cells, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
