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Diorygma Sticticum
''Diorygma sticticum'' is a species of corticolous (bark-dwelling) script lichen in the family Graphidaceae. It was described as new to science in 2011. It is found in lowland rainforests in Thailand, and in southwestern India. Taxonomy ''Diorygma sticticum'' was first described as a new species by lichenologists Jutarat Sutjaritturakan, Klaus Kalb, and Robert Lücking in 2011. The type specimen was found in Khao Yai National Park in Nakhon Ratchasima province, Thailand. The species epithet, ''sticticum'', refers to its unique secondary chemistry. Description ''Diorygma sticticum'' has a corticolous thallus that can grow up to in diameter and is 70–150 μm thick. When viewed in cross-section, the thallus reveals an upper cortex measuring 10–15 μm thick, an uneven , and groups of calcium oxalate crystals. It has a smooth to uneven, light green surface, occasionally accompanied by a white prothallus. The species forms dense clusters of stellate , which ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klaus Kalb
Klaus Kalb (born 1942) is a German lichenologist and an authority on tropical lichens. Biography Klaus Kalb was born in Nuremberg in 1942 and grew up in southern Bavaria. From 1960 to 1965 he studied biology, chemistry, and geography at the University of Erlangen–Nuremberg. Kalb was greatly interested in lichens and decided to pursue a doctoral degree; his thesis work was about lichen communities in the Ötztal Alps. From 1978–1981 he was a teacher at the Colégio Visconde de Porto Seguro in São Paulo, Brazil. This position afforded him the opportunity to initiate research into tropical lichens. Kalb earned his habilitation from the University of Regensburg in 1989, becoming an associate professor with that institution. In 2014, the University of Wisconsin herbarium purchased Kalb's lichen collection of 60,000 specimens for $75,000. With the acquisition of Kalb's collection, rich in tropical and European specimens, the herbarium houses about 70% of the world's know ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Staining
Staining is a technique used to enhance contrast in samples, generally at the microscopic level. Stains and dyes are frequently used in histology (microscopic study of biological tissues), in cytology (microscopic study of cells), and in the medical fields of histopathology, hematology, and cytopathology that focus on the study and diagnoses of diseases at the microscopic level. Stains may be used to define biological tissues (highlighting, for example, muscle fibers or connective tissue), cell populations (classifying different blood cells), or organelles within individual cells. In biochemistry, it involves adding a class-specific ( DNA, proteins, lipids, carbohydrates) dye to a substrate to qualify or quantify the presence of a specific compound. Staining and fluorescent tagging can serve similar purposes. Biological staining is also used to mark cells in flow cytometry, and to flag proteins or nucleic acids in gel electrophoresis. Light microscopes are used for viewin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichens Described In 2011
A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Introduction to Lichens – An Alliance between Kingdoms . University of California Museum of Paleontology. Lichens have properties different from those of their component organisms. They come in many colors, sizes, and forms and are sometimes plant-like, but are not s. They may have tiny, leafless branches (); flat leaf-like structures ( |
Lichen Species
A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Introduction to Lichens – An Alliance between Kingdoms . University of California Museum of Paleontology. Lichens have properties different from those of their component organisms. They come in many colors, sizes, and forms and are sometimes plant-like, but are not s. They may have tiny, leafless branches (); flat leaf-like structures ( |
Diorygma
''Diorygma'' is a genus of lichen-forming fungi in the family Graphidaceae. The genus was circumscription (taxonomy), circumscribed by Franz Gerhard Eschweiler in 1824. Species of the genus are widely distributed in tropical and subtropical regions of the world. Species , Species Fungorum accepts 76 species of ''Diorygma''. *''Diorygma aeolum'' *''Diorygma africanum'' *''Diorygma agumbense'' – India *''Diorygma alagoense'' – Brazil *''Diorygma albocinerascens'' – India *''Diorygma albovirescens'' – India *''Diorygma angusticarpum'' – Thailand *''Diorygma antillarum'' *''Diorygma archeri'' – Vietnam *''Diorygma australasicum'' *''Diorygma basinigrum'' *''Diorygma cameroonense'' – Africa *''Diorygma chumphonense'' – Thailand *''Diorygma circumfusum'' *''Diorygma citri'' – Thailand *''Diorygma confluens'' *''Diorygma conprotocetraricum'' – Thailand *''Diorygma dandeliense'' – India *''Diorygma dealbatum'' – India *''Diorygma epiglaucum'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cotigao Wildlife Sanctuary
The Cotigao Wildlife Sanctuary is located in Canacona Taluka, South Goa district, of Goa, India, established in 1968. There is an eco-tourism complex at the entrance of the sanctuary that houses a nature interpretation centre, cottages, toilets, library, reception area, rescue centre, canteen, children's park, and forest ranger office. The sanctuary is known for its dense forest of tall trees, some of which reach 30 metres in height. The forest supports moist deciduous trees, semi-evergreen trees, and evergreen trees. A special feature of the sanctuary is a treetop watchtower positioned 25 metres above a watering hole where animals go to drink. The best times to visit the watchtower are dawn and dusk when animals are most likely to be visiting. Animals in the sanctuary include the flying squirrel, slender loris, Indian pangolin, mouse deer, four-horned antelope, Malabar pit viper, hump-nosed pit viper, white-bellied woodpecker, Malabar trogon, velvet-fronted nuthatc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phu Luang Wildlife Sanctuary
Phu Luang Wildlife Sanctuary ( th, เขตรักษาพันธุ์สัตว์ป่าภูหลวง) is a wildlife sanctuary in northern Thailand, located in the Phu Luang mountain area, in the south of Loei Province. The area around the mountain is part of the Luang Prabang montane rain forests ecoregion. It covers an area of 897 km², covering area of the ''tambon'' Pla Ba and Tha Sala of Phu Ruea District, Phon Sung, Wang Yao and I Pum of Dan Sai, Nong Ngio and Saikhao of Wang Saphung, and Phu Ho of Phu Luang District. History The wildlife reserve was established in 1974. In 1985 it was further enlarged by 97 km². The reserve is named after its highest mountain, which peaks at 1,571 m. The reserve covers the whole mountain plateau around the peak, which has an elevation of around 1,200 m. To west of the reserve the Loei River originates. "Phu Luang" means "large mountain" or the "mountain of the king", formed by an uplift of the earth's crust ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diorygma Microsporum
''Diorygma microsporum'' is a species of corticolous (bark-dwelling) crustose lichen in the family Graphidaceae. It was described as new to science in 2011. It has a neotropical distribution, and has been collected in Florida, Colombia, Brazil, and India. Notable for its small ascospores, this lichen thrives in undisturbed rainforests and serves as an indicator of forest health. Taxonomy ''Diorygma microsporum'' was first described by lichenologists Marcela Cáceres and Robert Lücking as a new species in 2011. The species epithet ''microsporum'' highlights its quite small , which are the smallest known in the genus ''Diorygma''. The type specimen was discovered by the authors in the Charles Darwin Ecological Refuge in Igarassu, Pernambuco, Brazil. Initially, the newly discovered species was identified as ''Anomomorpha aggregans'' due to its small ascospores and norstictic acid chemistry. However, further examination and DNA sequencing of a Florida collection revealed a l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichen Product
Lichen products, also known as lichen substances, are organic compounds produced by a lichen. Specifically, they are secondary metabolites. Lichen products are represented in several different chemical classes, including terpenoids, orcinol derivatives, chromones, xanthones, depsides, and depsidones. Over 800 lichen products of known chemical structure have been reported in the scientific literature, and most of these compound are exclusively found in lichens. Examples of lichen products include usnic acid (a dibenzofuran), atranorin (a depside), lichexanthone (a xanthone), salazinic acid (a depsidone), and isolichenan, an α-glucan. Many lichen products have biological activity, and research into these effects is ongoing. Lichen products accumulate on the outer walls of the fungal hyphae, and are quite stable. Crystal deposits can be visualised using scanning electron microscopy. For this reason, even very old herbarium specimens can be analysed. The amount of lichen products i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
