|
Luciobarbus Steindachneri
''Luciobarbus steindachneri'' is a species of cyprinid fish. It is here placed in ''Luciobarbus'' following the IUCN, but that genus is very closely related to the other typical barbels and perhaps better considered a mere subgenus of ''Barbus''.de Graaf ''et al.'' (2007), Almodóvar ''et al.'' (2008) This large barbel can reach a length of almost when adult. It is endemic to the Iberian Peninsula, where it is found in both Portugal and Spain. It occurs in deep, slow-moving rivers and reservoirs of the middle and lower Guadiana and Tagus River's drainage basins. Abundant growth of water plants seems to be necessary for it to thrive. It has declined by more than a third since the late 1990s, and it is not a common species anymore; it is classified as Vulnerable by the IUCN. The main cause of its decline is unsustainable use of water resources, such as water pollution, extraction for agriculture and dam A dam is a barrier that stops or restricts the flow of surface water or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carlos Alberto Da Silva Almaça
Carlos may refer to: Places ;Canada * Carlos, Alberta, a locality ;United States * Carlos, Indiana, an unincorporated community * Carlos, Maryland, a place in Allegany County * Carlos, Minnesota, a small city * Carlos, West Virginia ;Elsewhere * Carlos (crater), Montes Apenninus, LQ12, Moon; a lunar crater near Mons Hadley People * Carlos (given name), including a list of name holders * Carlos (surname), including a list of name holders Sportspeople * Carlos (Timorese footballer) (Carlos Mateus Ximenes, born 1986) * Carlos (footballer, born 1995) (Carlos Alberto Carvalho da Silva Júnior), Brazilian footballer * Carlos (footballer, born 1985) (Carlos Santos de Jesus), Brazilian footballer Others * Carlos (Calusa) (died 1567), king or paramount chief of the Calusa people of Southwest Florida * Carlos (singer) (1943—2008), French entertainer * Carlos the Jackal, a Venezuelan terrorist Arts and entertainment * ''Carlos'' (miniseries), 2010 biopic about the terrorist Carlo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guadiana
The Guadiana River ( , , , ) is an international river defining a long stretch of the Portugal-Spain border, separating Extremadura and Andalusia (Spain) from Alentejo and Algarve (Portugal). The river's basin extends from la Mancha and the eastern portion of Extremadura to the southern provinces of the Algarve; the river and its tributaries flow from east to west, then south through Portugal to the border towns of Vila Real de Santo António (Portugal) and Ayamonte (Spain), where it flows into the Gulf of Cádiz. With a course that covers a distance of , it is the fourth-longest in the Iberian Peninsula, and its hydrological basin extends over an area of approximately (the majority of which lies within Spain). Etymology Ptolemy's ''Geography'' recorded the Celtiberian name as ''Anas'', meaning a marshy area or bayou. The Romans adapted this name as , which was etymolygised as the "River of Ducks." After the Muslim conquest of the Iberian Peninsula, the name was extend ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 1967
A fish (: fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits. Fish can be grouped into the more basal jawless fish and the more common jawed fish, the latter including all living cartilaginous and bony fish, as well as the extinct placoderms and acanthodians. In a break to the long tradition of grouping all fish into a single class (Pisces), modern phylogenetics views fish as a paraphyletic group. Most fish are cold-blooded, their body temperature varying with the surrounding water, though some large active swimmers like white shark and tuna can hold a higher core temperature. Many fish can communicate acoustically with each other, such as during courtship displays. The study of fish is known as ichthyology. The earliest fish appeared during the Cambrian as small filter feeders; they continued to evolve through the Paleozoic, diversifying into many forms. The earliest fish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fish Of The Iberian Peninsula
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] |
Cyprinid Fish Of Europe
Cyprinidae is a family of freshwater fish commonly called the carp or minnow family, including the carps, the true minnows, and their relatives the barbs and barbels, among others. Cyprinidae is the largest and most diverse fish family, and the largest vertebrate animal family overall, with about 1,780 species divided into 166 valid genera. Cyprinids range from about in size to the giant barb (''Catlocarpio siamensis''). By genus and species count, the family makes up more than two-thirds of the ostariophysian order Cypriniformes. The family name is derived from the Greek word ( 'carp'). Biology and ecology Cyprinids are stomachless, or ''agastric'', fish with toothless jaws. Even so, food can be effectively chewed by the gill rakers of the specialized last gill bow. These pharyngeal teeth allow the fish to make chewing motions against a chewing plate formed by a bony process of the skull. The pharyngeal teeth are unique to each species and are used to identify species. Stro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal Biology (journal)
''Animal Biology'' is a peer review, peer-reviewed scientific journal in the field of zoology. It is the official journal of the Koninklijke Nederlandse Dierkundige Vereniging (Royal Dutch Zoological Society) and published on behalf of the society by Brill Publishers. The journal was established in 1872 as the ''Archives Néerlandaises de Zoologie'' and renamed ''Netherlands Journal of Zoology'' in 1967. It has been known under its current name since 2004. Abstracting and indexing According to the ''Journal Citation Reports'', the journal's 2010 impact factor is 0.879 and it is indexed in BIOSIS Previews, BIOSIS, Elsevier Biobase, CABS, Current Contents/Agriculture, Biology and Environmental Sciences, FISHLIT, GeoAbstracts, ''Science Citation Index'', and ''Scopus''. References External links * Zoology journals Publications established in 1872 Quarterly journals English-language journals Brill Publishers academic journals Academic journals associated with learned ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Supply And Sanitation In Spain
Water supply and sanitation in Spain is characterized by universal access and good service quality, while tariffs are among the lowest in the EU. Almost half of the population is served by private or mixed private-public water companies, which operate under concession contracts with municipalities. The largest of the private water companies, with a market share of about 50% of the private concessions, is Aguas de Barcelona ( Agbar). However, the large cities are all served by public companies except Barcelona and Valencia. The largest public company is Canal de Isabel II, which serves the metropolitan area of Madrid. Droughts occasionally affect water supply in Southern Spain, resulting in their consideration of seawater desalination in order to meet water needs. Access Access to water supply and sanitation in Spain is universal. 98% of the urban population and 93% of the rural population is connected to sewers, while the remainder is served by on-site sanitation systems such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Convention On The Conservation Of European Wildlife And Natural Habitats
Convention may refer to: * Convention (norm), a custom or tradition, a standard of presentation or conduct ** Treaty, an agreement in international law ** Convention (political norm), uncodified legal or political tradition * Convention (meeting), meeting of a (usually large) group of individuals and/or companies in a certain field who share a common interest ** Fan convention, a gathering of fans of a particular media property or genre *** Anime convention, centered on Japanese anime and manga *** Comic book convention centered on comic books *** Gaming convention, centered on role-playing games, collectible card games, miniatures wargames, board games, video games, and the like *** Magic convention, centered on magic and the magic industry *** Tattoo convention, a meeting and exhibition for tattoo practitioners and enthusiasts from different shops and areas, as well as anyone who wishes to see the world of tattooing up close *** Furry convention, centered on anthropomorphic ani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agriculture
Agriculture encompasses crop and livestock production, aquaculture, and forestry for food and non-food products. Agriculture was a key factor in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in the cities. While humans started gathering grains at least 105,000 years ago, nascent farmers only began planting them around 11,500 years ago. Sheep, goats, pigs, and cattle were domesticated around 10,000 years ago. Plants were independently cultivated in at least 11 regions of the world. In the 20th century, industrial agriculture based on large-scale monocultures came to dominate agricultural output. , small farms produce about one-third of the world's food, but large farms are prevalent. The largest 1% of farms in the world are greater than and operate more than 70% of the world's farmland. Nearly 40% of agricultural land is found on farms larger than . However, five of every six farm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Pollution
Water pollution (or aquatic pollution) is the contamination of Body of water, water bodies, with a negative impact on their uses. It is usually a result of human activities. Water bodies include lakes, rivers, oceans, aquifers, reservoirs and groundwater. Water pollution results when contaminants mix with these water bodies. Contaminants can come from one of four main sources. These are sewage discharges, industrial activities, agricultural activities, and urban runoff including stormwater. Water pollution may affect either surface water or groundwater pollution, groundwater. This form of pollution can lead to many problems. One is the environmental degradation, degradation of aquatic ecosystems. Another is spreading Waterborne diseases, water-borne diseases when people use polluted water for drinking or irrigation. Water pollution also reduces the ecosystem services such as drinking water provided by the Water resources, water resource. Sources of water pollution are either p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vulnerable Species
A vulnerable species is a species which has been Conservation status, categorized by the International Union for Conservation of Nature as being threatened species, threatened with extinction unless the circumstances that are threatened species, threatening its survival and reproduction improve. Vulnerability is mainly caused by habitat loss or destruction of the species' home. Vulnerable habitat or species are monitored and can become increasingly threatened. Some species listed as "vulnerable" may be common in captivity (animal), captivity, an example being the military macaw. In 2012 there were 5,196 animals and 6,789 plants classified as vulnerable, compared with 2,815 and 3,222, respectively, in 1998. Practices such as cryoconservation of animal genetic resources have been enforced in efforts to conserve vulnerable breeds of livestock specifically. Criteria The International Union for Conservation of Nature uses several criteria to enter species in this category. A taxon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Plant
Aquatic plants, also referred to as hydrophytes, are vascular plants and non-vascular plants that have adapted to live in aquatic environments ( saltwater or freshwater). In lakes, rivers and wetlands, aquatic vegetations provide cover for aquatic animals such as fish, amphibians and aquatic insects, create substrate for benthic invertebrates, produce oxygen via photosynthesis, and serve as food for some herbivorous wildlife. Familiar examples of aquatic plants include waterlily, lotus, duckweeds, mosquito fern, floating heart, water milfoils, mare's tail, water lettuce, water hyacinth, and algae. Aquatic plants require special adaptations for prolonged inundation in water, and for floating at the water surface. The most common adaptation is the presence of lightweight internal packing cells, aerenchyma, but floating leaves and finely dissected leaves are also common.Sculthorpe, C. D. 1967. The Biology of Aquatic Vascular Plants. Reprinted 1985 Edward Arnold, by London.Hutchi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
