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Titicaca Flightless Grebe
The Titicaca grebe (''Rollandia microptera''), also known as the Titicaca flightless grebe or short-winged grebe, is a grebe found on the altiplano of Peru and Bolivia. As its name implies, its main population occurs on Lake Titicaca. Lake Uru Uru and Poopó, the Rio Desaguadero, and small lakes that connect to Lake Titicaca in wet years, serve as "spillovers" territory. In the past, the population was larger and several of these lakes – such as Lakes Umayo and Arapa – apparently had and may still have permanent large colonies (BirdLife International 2006). It is sometimes placed in ''Podiceps'' or a monotypic genus ''Centropelma''. Its local name is ''zampullín del Titicaca''. Description This is a mid-sized grebe, varying from 28 to 45 cm in overall length. It weighs up to 600 g. Its coloration is unmistakable. The only grebe species it somewhat resembles is the unrelated red-necked grebe which is not found in South America. The only congener, the white-tuf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicodamus
''Nicodamus'' is a genus of small spiders known from Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl .... They are often referred to as the red and black spiders. As of 2017 its two species include '' Nicodamus peregrinus'' and '' Nicodamus mainae''. References Spiders of Australia Araneomorphae genera Nicodamidae {{Araneomorphae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White-tufted Grebe
The white-tufted grebe (''Rollandia rolland''), also known as Rolland's grebe, is a species of grebe in the family Podicipedidae. Found in the southern and western South America, its natural habitat is freshwater lakes, ponds and sluggish rivers and streams. Taxonomy Three subspecies are recognised: *''R. r. chilensis'' (Lesson, 1828) – Southern and western Peru and southeast Brazil southwards to Cape Horn and Tierra del Fuego. *''R. r. morrisoni'' (Simmons, 1962) – Lake Junin in the Andean highlands of central Peru. *''R. r. rolland'' (Gaimard, 1823) – Falkland Islands. The most notable difference between the subspecies is their sizes. ''R. r. rolland'' is almost flightless, and considerably larger (typically weighs about twice as much as ''R. r. chilensis'') and with deeper rufous underparts than the other two subspecies. ''R. r. chilensis'' and ''R. r. morrisoni'' are very similar, but the former is on average smaller than the latter. ''R. r. rolland'' also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endangered
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching, invasive species, and climate change. The International Union for Conservation of Nature (IUCN) Red List lists the global conservation status of many species, and various other agencies assess the status of species within particular areas. Many nations have laws that protect conservation-reliant species which, for example, forbid hunting, restrict land development, or create protected areas. Some endangered species are the target of extensive conservation efforts such as captive breeding and habitat restoration. Human activity is a significant cause in causing some species to become endangered. Conservation status The conservation status of a species indicates the likelihood that it will become extinct. Multiple factors are c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN
The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the status of the natural world and the measures needed to safeguard it. It is involved in data gathering and Data analysis, analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through buildin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odontesthes Bonariensis
''Odontesthes bonariensis'' is a species of Neotropical silverside, an euryhaline fish native to fresh, brackish and salt water in south-central and southeastern South America, but also Introduced species, introduced elsewhere. It is often known by the common name Argentinian silverside or pejerrey (the latter is of Spanish origin, meaning "king fish," the Latin ''piscis'' given rise to "pez," ''fish'', and "peje," a kind of fish, and "rey," ''king''), but it is not the only species of silverside in Uruguay and Argentina and pejerrey is also used for many other silversides. It is a commercially important species and the target of major fisheries. ''O. bonariensis'' resembles the other species in the genus ''Odontesthes'', but it is larger, generally reaching up to in total length, and exceptionally as much as long and in weight (reports of even larger are unconfirmed and questionable). Range, habitat and status ''Odontesthes bonariensis'' is native to subtropical and temperate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neotropical Silversides
The neotropical silversides are a family, Atherinopsidae, of fishes in the order Atheriniformes. About 112 species in 13 genera are distributed throughout the tropical and temperate waters of the New World, including both marine and freshwater habitats. The familiar grunions and Atlantic silverside The Atlantic silverside (''Menidia menidia''), also known as spearing in the northeastern United States, is a small species of fish that is one of the most abundant fish species present in estuarine habitats along the Atlantic coast of North Amer ... belong to this family. References * External links beryllina'' Photo and Information at MBL Aquaculture Atherinopsidae Taxa named by Henry Weed Fowler {{Atheriniformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orestias (Cyprinodontidae)
''Orestias'' is a genus of pupfish. Older systematics classified them into the own family Orestiidae. They are found in lakes, rivers and springs in the Andean highlands of South America, and several species are considered threatened. They are egg-laying fish that feed on small animals and plant matter. The largest species can reach a total length of , but most remain far smaller. Their most characteristic feature is the absence of the ventral fin, although this is shared by a few other pupfish. Despite their moderate to small size, they are important to local fisheries and a few species are farmed. Several species are locally and colloquially known as ''carache''. The name of the genus is a reference to Orestes, a Greek mythological character who Valenciennes described as the "nymph of the mountains". Range and habitat ''Orestias'' is restricted to freshwater habitats at an altitude of in the Andes of central and southern Peru, western Bolivia, and northeastern Chile.Vila, M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamogeton
''Potamogeton'' is a genus of aquatic, mostly freshwater, plants of the family Potamogetonaceae. Most are known by the common name pondweed, although many unrelated plants may be called pondweed, such as Canadian pondweed (''Elodea canadensis''). The genus name means "river neighbor", originating from the Greek ''potamos'' (river) and ''geiton'' (neighbor). Morphology ''Potamogeton'' species range from large (stems of 6 m or more) to very small (less than 10 cm). Height is strongly influenced by environmental conditions, particularly water depth. All species are technically perennial, but some species disintegrate in autumn to a large number of asexually produced resting buds called turions, which serve both as a means of overwintering and dispersal. Turions may be borne on the rhizome, on the stem, or on stolons from the rhizome. Most species, however, persist by perennial creeping rhizomes. In some cases the turions are the only means to differentiate species. The l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azolla
''Azolla'' (common called mosquito fern, water fern, and fairy moss) is a genus of seven species of aquatic ferns in the family Salviniaceae. They are extremely reduced in form and specialized, having a significantly different appearance to other ferns and more resembling some mosses or even duckweeds. '' Azolla filiculoides'' is one of two fern species for which a reference genome has been published. It is believed that this genus grew so prolifically during the Eocene (and thus absorbed such a large amount of carbon) that it triggered a global cooling event that has lasted to the present. ''Azolla'' may establish as an invasive plant in areas where it is not native. In such a situation, it can alter aquatic ecosystems and biodiversity substantially. Phylogeny Phylogeny of ''Azolla'' Other species include: At least six extinct species are known from the fossil record: *'' Azolla intertrappea'' Sahni & H.S. Rao, 1934 (Eocene, India) *'' Azolla berryi'' Brown, 1934 (Eocen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Duckweed
Lemnoideae is a subfamily of flowering aquatic plants, known as duckweeds, water lentils, or water lenses. They float on or just beneath the surface of still or slow-moving bodies of fresh water and wetlands. Also known as bayroot, they arose from within the arum or aroid family (Araceae), so often are classified as the subfamily Lemnoideae within the family Araceae. Other classifications, particularly those created prior to the end of the twentieth century, place them as a separate family, Lemnaceae. These plants have a simple structure, lacking an obvious stem or leaves. The greater part of each plant is a small organized "thallus" or "frond" structure only a few cells thick, often with air pockets (aerenchyma) that allow it to float on or just under the water surface. Depending on the species, each plant may have no root or may have one or more simple rootlets. Reproduction is mostly by asexual budding (vegetative reproduction), which occurs from a meristem enclosed at the b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrocharitaceae
Hydrocharitaceae is a flowering plant family which includes 14 accepted genera and a total of ca 135 known species (Christenhusz & Byng 2016). The family holds a number of species of aquatic plants, including tape-grass, the well-known Canadian waterweed, and frogbit. The family includes both freshwater and marine aquatics. They are found throughout the world in a wide variety of habitats, but are primarily tropical. Description The species are annual or perennial, with a creeping monopodial rhizome with the leaves arranged in two vertical rows, or an erect main shoot with roots at the base and spirally arranged or whorled leaves. The leaves are simple and usually found submerged, though they may be found floating or partially emerse. As with many aquatics they can be quite variable in shape – from linear to orbicular, with or without a petiole, and with or without a sheathing base. The flowers are arranged in a forked, spathe-like bract or between two opposite bracts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myriophyllum Elatinoides
''Myriophyllum'' (water milfoil) is a genus of about 69 species of freshwater aquatic plants, with a cosmopolitan distribution. The centre of diversity for ''Myriophyllum'' is Australia with 43 recognized species (37 endemic). These submersed aquatic plants are perhaps most commonly recognized for having elongate stems with air canals and whorled Leaf, leaves that are finely, pinnately divided, but there are many exceptions. For example, the North American species ''M''. ''tenellum'' has alternately arranged scale-like leaves, while many Australian species have small alternate or opposite leaves that lack dissection. The plants are usually heterophyllous; leaves above the water are often stiffer and smaller than the submerged leaves on the same plant and can lack dissection. Species can be monoecious or dioecious. In Monoecy, monoecious species, plants are hermaphrodite, while in Dioecy, dioecious species, plants are either male or female, the flowers are small, 4(2)-parted and us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
