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Erucastrum Gallicum
''Erucastrum gallicum'' is an annual or biennial plant in the family Brassicaceae known by the common names hairy rocket and common dogmustard. It is a low growing plant with an erect upright habit or sometimes with ascending tops with bright yellow flowers. Plants bloom in late spring through the summer into early autumn. As plants bloom the stems extend upward and when finished blooming plants are 30 to 60 centimeters long. The plant is native to Eurasia but is an introduced species An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived there ... in many areas of the world, including much of North America. A population of ''E. gallicum'' was studied in a limestone quarry near Syracuse, New York between 1976 and 1981. Cohorts of seedlings germinating in the spring exhibited markedly diffe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Ludwig Willdenow
Carl Ludwig Willdenow (22 August 1765 – 10 July 1812) was a German botanist, pharmacist, and plant taxonomist. He is considered one of the founders of phytogeography, the study of the geographic distribution of plants. Willdenow was also a mentor of Alexander von Humboldt, one of the earliest and best known phytogeographers. He also influenced Christian Konrad Sprengel, who pioneered the study of plant pollination and floral biology. Biography Willdenow was born in Berlin and studied medicine and botany at the University of Halle. After studying pharmaceutics at Wieglieb College, Langensalza and in medicine at Halle, he returned to Berlin to work at his father's pharmacy located in the Unter den Linden. His early interest in botany was kindled by his uncle J. G. Gleditsch and he started a herbarium collection in his teenage years. In 1794 he became a member of the Berlin Academy of Sciences. He was a director of the Botanical garden of Berlin from 1801 until his death. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otto Eugen Schulz
Otto Eugen Schulz (31 October 1874 – 17 February 1936) was a German botanist, born in Berlin. He was the brother of botanist Roman Schulz (1873–1926). He published important systematic treatments of the families Brassicaceae (then known as Cruciferae) and Erythroxylaceae, and he is the authority for numerous species within these families. He was the author of a 1903 treatise on the genus ''Cardamine'' (family Brassicaceae), titled "Monographie der Gattung Cardamine'". The genus '' Ottoschulzia'' (family Metteniusaceae) was named in his honor by Ignatz Urban Ignatz Urban (7 January 1848 – 7 January 1931) was a German botanist. He is known for his contributions to the flora of the Caribbean and Brazil, and for his work as curator of the Berlin Botanical Garden. Born the son of a brewer, Urban s ... (1848–1931) in 1912. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erucastrum Gallicum Seeds
''Erucastrum'' is a genus of flowering plant in the family Brassicaceae. There are approximately 18 species. ''Erucastrum'' species are known generally as dogmustards. Species include: * ''Erucastrum gallicum'' * ''Erucastrum nasturtiifolium'' * ''Erucastrum rostratum ''Erucastrum rostratum'' is a species of flowering plant in the family Brassicaceae. It is found only in Yemen. Its natural habitat In ecology, the term habitat summarises the array of resources, physical and biotic factors that are pres ...'' References * Brassicaceae Brassicaceae genera Taxonomy articles created by Polbot {{Brassicales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brassicaceae
Brassicaceae () or (the older) Cruciferae () is a medium-sized and economically important family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Most are herbaceous plants, while some are shrubs. The leaves are simple (although are sometimes deeply incised), lack stipules, and appear alternately on stems or in rosettes. The inflorescences are terminal and lack bracts. The flowers have four free sepals, four free alternating petals, two shorter free stamens and four longer free stamens. The fruit has seeds in rows, divided by a thin wall (or septum). The family contains 372 genera and 4,060 accepted species. The largest genera are ''Draba'' (440 species), ''Erysimum'' (261 species), ''Lepidium'' (234 species), ''Cardamine'' (233 species), and ''Alyssum'' (207 species). The family contains the cruciferous vegetables, including species such as ''Brassica oleracea'' (cultivated as cabbage, kale, cauliflower, broccoli and collards), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Introduced Species
An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived there by human activity, directly or indirectly, and either deliberately or accidentally. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are considered naturalized. The process of human-caused introduction is distinguished from biological colonization, in which species spread to new areas through "natural" (non-human) means such as storms and rafting. The Latin expression neobiota captures the characteristic that these species are ''new'' biota to their environment in terms of established biological network (e.g. food web) relationships. Neobiota can further be divided into neozoa (also: neozoons, sing. neozoon, i.e. animals) and neophyt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cohort Study
A cohort study is a particular form of longitudinal study that samples a cohort (a group of people who share a defining characteristic, typically those who experienced a common event in a selected period, such as birth or graduation), performing a cross-section at intervals through time. It is a type of panel study where the individuals in the panel share a common characteristic. Cohort studies represent one of the fundamental designs of epidemiology which are used in research in the fields of medicine, pharmacy, nursing, psychology, social science, and in any field reliant on 'difficult to reach' answers that are based on evidence (statistics). In medicine for instance, while clinical trials are used primarily for assessing the safety of newly developed pharmaceuticals before they are approved for sale, epidemiological analysis on how risk factors affect the incidence of diseases is often used to identify the causes of diseases in the first place, and to help provide pre-clinica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Survivorship Curve
A survivorship curve is a graph showing the number or proportion of individuals surviving to each age for a given species or group (e.g. males or females). Survivorship curves can be constructed for a given cohort (a group of individuals of roughly the same age) based on a life table. There are three generalized types of survivorship curves: * ''Type I'' or convex curves are characterized by high age-specific survival probability in early and middle life, followed by a rapid decline in survival in later life. They are typical of species that produce few offspring but care for them well, including humans and many other large mammals. * ''Type II'' or diagonal curves are an intermediate between Types I and III, where roughly constant mortality rate/survival probability is experienced regardless of age. Some birds and some lizards follow this pattern. * ''Type III'' or concave curves have the greatest mortality (lowest age-specific survival) early in life, with relatively low rates of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
