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Barbaricina Columbine
''Aquilegia barbaricina'', common name Barbaricina columbine, is a perennial species of flowering plant in the family Ranunculaceae. It is endemic to Italy, occurring only on the island of Sardinia. Description ''Aquilegia barbaricina'' grows on a single stem to a height of . The stem is covered with fine hairs, branching into 3–5 nearly leafless flower stalks. The leaf stalks divide 1–3 times and bear three leaves or further stalks. Leaflets are three-lobed and have rounded teeth on their outer edge. The plant has 5–8 white, drooping flowers measuring in diameter, with upright, slightly curved spurs. Distribution ''Aquilegia barbaricina'' is endemic to east-central Sardinia and grows in alder scrub along water courses at in altitude. Its natural habitats are Mediterranean shrubby vegetation and shrub-dominated wetlands. It is now thought to survive only in a few places in a deep, wooded wetland valley on . Taxonomy The species forms a monophyletic clade with the other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pier Virgilio Arrigoni
A pier is a raised structure that rises above a body of water and usually juts out from its shore, typically supported by piles or pillars, and provides above-water access to offshore areas. Frequent pier uses include fishing, boat docking and access for both passengers and cargo, and oceanside recreation. Bridges, buildings, and walkways may all be supported by architectural piers. Their open structure allows tides and currents to flow relatively unhindered, whereas the more solid foundations of a quay or the closely spaced piles of a wharf can act as a breakwater, and are consequently more liable to silting. Piers can range in size and complexity from a simple lightweight wooden structure to major structures extended over . In American English, a pier may be synonymous with a dock. Piers have been built for several purposes, and because these different purposes have distinct regional variances, the term ''pier'' tends to have different nuances of meaning in different parts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquilegia Nugorensis
''Aquilegia'', commonly known as columbines, is a genus of perennial flowering plants in the family Ranunculaceae (buttercups). The genus includes between 80 and 400 taxa ( described species and subspecies) with natural ranges across the Northern Hemisphere. Natural and introduced populations of ''Aquilegia'' exist on all continents but Antarctica. Known for their high physical variability and ease of hybridization, columbines are popular garden plants and have been used to create many cultivated varieties. ''Aquilegia'' typically possess stiff stems and leaves divide into multiple leaflets. Columbines often have colorful flowers with five sepals and five petals. The petals generally feature nectar spurs which differ in lengths between species. In North America, morphological variations in spurs evolved to suit different pollinators. Some species and varieties of columbines are naturally spurless. In cultivation, varieties bearing significantly altered physical traits such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Described In 1977
Plants are the eukaryotes that form the kingdom Plantae; they are predominantly photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with cyanobacteria to produce sugars from carbon dioxide and water, using the green pigment chlorophyll. Exceptions are parasitic plants that have lost the genes for chlorophyll and photosynthesis, and obtain their energy from other plants or fungi. Most plants are multicellular, except for some green algae. Historically, as in Aristotle's biology, the plant kingdom encompassed all living things that were not animals, and included algae and fungi. Definitions have narrowed since then; current definitions exclude fungi and some of the algae. By the definition used in this article, plants form the clade Viridiplantae (green plants), which consists of the green algae and the embryophytes or land plants (hornworts, liverworts, mosses, lycophytes, ferns, conifers and other gymnosperm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy Articles Created By Polbot
280px, Generalized scheme of taxonomy Taxonomy is a practice and science concerned with classification or categorization. Typically, there are two parts to it: the development of an underlying scheme of classes (a taxonomy) and the allocation of things to the classes (classification). Originally, taxonomy referred only to the classification of organisms on the basis of shared characteristics. Today it also has a more general sense. It may refer to the classification of things or concepts, as well as to the principles underlying such work. Thus a taxonomy can be used to organize species, documents, videos or anything else. A taxonomy organizes taxonomic units known as "taxa" (singular "taxon"). Many are hierarchies. One function of a taxonomy is to help users more easily find what they are searching for. This may be effected in ways that include a library classification system and a search engine taxonomy. Etymology The word was coined in 1813 by the Swiss botanist A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Flora Of Sardinia
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or becoming ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquilegia
''Aquilegia'', commonly known as columbines, is a genus of perennial flowering plants in the family Ranunculaceae (buttercups). The genus includes between 80 and 400 taxa (described species and subspecies) with natural Species distribution, ranges across the Northern Hemisphere. Natural and Introduced species, introduced populations of ''Aquilegia'' exist on all continents but Antarctica. Known for their high physical variability and ease of Hybridization in perennial plants, hybridization, columbines are popular garden plants and have been used to create many Cultivar, cultivated varieties. ''Aquilegia'' typically possess stiff stems and leaves divide into multiple Leaflet (botany), leaflets. Columbines often have colorful flowers with five sepals and five petals. The petals generally feature nectar spurs which differ in lengths between species. In North America, morphological variations in spurs evolved to suit different pollinators. Some species and varieties of columbines are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN Species Survival Commission
The IUCN Species Survival Commission (IUCN SSC) is one of the six commissions of the International Union for Conservation of Nature (IUCN). The Species Survival Commission, the largest of the IUCN's six commissions, is a science-driven network consisting of 9,000 volunteer experts working in more than 160 Specialist Groups, including 17 invertebrate groups, Red List Authorities, and Task Forces. The IUCN Species Strategic Plan outlines conservation priorities, with the current plan covering the period from 2021 to 2025. Since 2016, Jon Paul Rodríguez is the chair of the commission. Specialist Groups SSC Specialist Groups are primarily taxon-specific volunteer organizations made up mostly of research biologists and natural historians. Some groups focus on conservation issues specific to certain plants, animals, and fungi, while others work on broader goals like species reintroduction into former habitats, addressing climate change, wildlife health, and promoting sustainable us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN Red List Critically Endangered Species (Plantae)
As of December 2023, the International Union for Conservation of Nature (IUCN) lists 5702 plant species categorized as Critically Endangered, including 569 which are tagged as ''possibly extinct'' and 48 ''possibly extinct in the wild''. 8.6% of all evaluated plant species are listed as critically endangered. The IUCN also lists 284 subspecies and varieties as critically endangered. Additionally 5371 plant species (8.1% of those evaluated) are listed as ''data deficient'', meaning there is insufficient information for a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN. While the category of ''data deficient'' indicates that no assessment of extinction risk has been made for the taxa, the IUCN notes that it may be appropriate to give them "the same degree of attention as threatened taxa, at least until their status can be assessed." This is a comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat Loss
Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease in biodiversity and Abundance (ecology), species numbers. Habitat destruction is in fact the leading cause of biodiversity loss and species extinction worldwide. Humans contribute to habitat destruction through the Exploitation of natural resources, use of natural resources, agriculture, industrial production and urbanization (urban sprawl). Other activities include mining, logging and trawling. Environmental factors can contribute to habitat destruction more indirectly. Geological processes, climate change, introduced species, introduction of invasive species, ecosystem nutrient depletion, water pollution, water and noise pollution are some examples. Loss of habitat can be preceded by an initial habitat fragmentation. Fragmentation and lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinct
Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and recover. As a species' potential Range (biology), range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxon, Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the Fossil, fossil record) after a period of apparent absence. Over five billion species are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryotes globally, possibly many times more if microorganisms are included. Notable extinct animal species include Dinosaur, non-avian dinosaurs, Machairodontinae, saber-toothed cats, and mammoths. Through evolution, species arise through the process of specia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
