|
Invasive Species In Hawaii
As with a number of other geographically isolated islands, Hawaii has problems with invasive species negatively affecting the natural biodiversity of the islands. Historical examples Hawaii is the most isolated major land mass in the world and that isolation has led to very high rates of endemism. Uniquely adapted endemic species are often sensitive to competition from invasive species and Hawaii has had numerous extinctions (List of extinct animals of the Hawaiian Islands). While not the only cause, introduction of invasive species can be a major cause of population decline and extinction. There are several routes for introduction of non-native species. Some species were accidentally introduced to Hawaii like the rat, fire ants, coqui frog, mosquitos, and Oryctes rhinoceros, coconut rhinoceros beetle. Some are species brought in for cultivation that spread to wild areas like miconia, pigs, and goats. Some species were intentionally introduced for sport like axis deer and some f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawaii
Hawaii ( ; ) is an island U.S. state, state of the United States, in the Pacific Ocean about southwest of the U.S. mainland. One of the two Non-contiguous United States, non-contiguous U.S. states (along with Alaska), it is the only state not on the North American mainland, the only state that is an archipelago, and the only state in the tropics. Hawaii consists of 137 volcanic islands that comprise almost the entire Hawaiian Islands, Hawaiian archipelago (the exception, which is outside the state, is Midway Atoll). Spanning , the state is Physical geography, physiographically and Ethnology, ethnologically part of the Polynesian subregion of Oceania. Hawaii's ocean coastline is consequently the List of U.S. states and territories by coastline, fourth-longest in the U.S., at about . The eight main islands, from northwest to southeast, are Niihau, Niihau, Kauai, Kauai, Oahu, Oahu, Molokai, Molokai, Lanai, Lānai, Kahoʻolawe, Kahoolawe, Maui, and Hawaii (island), Hawaii, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Koa Wilt
Koa wilt is a relatively new disease to Hawaii, discovered in 1980. Koa wilt is caused by a forma specialis of the fungus ''Fusarium oxysporum'', which is now abundant in Hawaiian soils and infects the native Acacia koa tree, a once-dominant species in the canopy of Hawaiian forests. ''Fusarium oxysporum'' f.sp. ''koae'' is believed to have been brought into Hawaii on an ornamental acacia plant. Fusarium fungi clog the tree xylem, causing significant wilt and mortality among Koa trees. Due to their cultural importance, Koa wilt is one of the Environmental issues in Hawaii, environmental issues of Hawaii. Hosts and symptoms The host for Koa wilt is Acacia koa, a tree that is native and endemic to the Hawaiian islands. It ranges in size from 15 to greater than 50 feet with a canopy spread of 20 to 40 feet. It has a showy white flower and blooms sporadically. Mature leaves are sickle shaped. Koa wilt is typically a fatal pathogen for its host. In only a few months, a tree may lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trout
Trout (: trout) is a generic common name for numerous species of carnivorous freshwater ray-finned fishes belonging to the genera '' Oncorhynchus'', ''Salmo'' and ''Salvelinus'', all of which are members of the subfamily Salmoninae in the family Salmonidae. The word ''trout'' is also used for some similar-shaped but non-salmonid fish, such as the spotted seatrout/speckled trout (''Cynoscion nebulosus'', which is actually a croaker). Trout are closely related to salmon and have similar migratory life cycles. Most trout are strictly potamodromous, spending their entire lives exclusively in freshwater lakes, rivers and wetlands and migrating upstream to spawn in the shallow gravel beds of smaller headwater creeks. The hatched fry and juvenile trout, known as ''alevin'' and ''parr'', will stay upstream growing for years before migrating down to larger waterbodies as maturing adults. There are some anadromous species of trout, such as the steelhead (a coastal subs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salvinia
''Salvinia'' or watermosses is a genus of free-floating aquatic ferns in the family Salviniaceae. The genus is named in honor of 17th-century Italian naturalist Anton Maria Salvini, and the generic name was first published in 1754 by French botanist Jean-François Séguier in ''Plantae Veronenses'', a description of the plants found around Verona. Twelve species are recognized, at least three of which (''S. molesta'', ''S. herzogii'', and ''S. minima'') are believed to be hybrids in part because their sporangia are found to be empty. ''Salvinia'' is related to the other water ferns, including the mosquito fern '' Azolla''. Recent sources include both ''Azolla'' and ''Salvinia'' in Salviniaceae, although each genus was formerly given its own family. ''Salvinia'', like the other ferns in order Salviniales, are heterosporous, producing spores of differing sizes. However, leaf development in ''Salvinia'' is unique. The upper side of the floating leaf, which appears to face the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Wilson (Hawaii)
Lake Wilson may refer to one of these locations: * Lake Wilson (Arkansas County, Arkansas), a lake in Arkansas County, Arkansas, USA * Lake Wilson (Washington County, Arkansas), a lake in Washington County, Arkansas, USA * Lake Wilson, Minnesota, a town in Leeds Township, Murray County, USA * Lake Wilson (Murray County, Minnesota), USA *Lake Wilson, a lake in Hawaii Hawaii ( ; ) is an island U.S. state, state of the United States, in the Pacific Ocean about southwest of the U.S. mainland. One of the two Non-contiguous United States, non-contiguous U.S. states (along with Alaska), it is the only sta ..., USA * Lake Wilson (New Zealand), a mountain tarn which is the source of the Routeburn River See also * Wilson Lake (other) {{geodis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miconia Calvescens
''Miconia calvescens'', the velvet tree, miconia, or bush currant, is a species of flowering plant in the family Melastomataceae. It is native to Mexico and Central and South America and it has become one of the world's most invasive species. Miconia trees can flower several times a year and bear fruit simultaneously. The inflorescences are large panicles of white to light pink blossoms. The tiny purple fruits are about half a centimeter in diameter and packed with about 120–230 minuscule seeds. The sweet fruits are attractive to birds and other animals which disperse the seeds. A young tree with only two flower panicles can produce seeds in its first fruiting season. This heavy seed production and potential for long-distance dispersal help make miconia an invasive threat. The seeds can lie dormant in the soil of the forest for more than 12 years, and whenever a break in the canopy allows sun to shine through to a patch of soil the seeds there undergo germination. Once the pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Tree Fern
Australian tree fern may refer to any species of tree fern native to 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 ..., most commonly referring to: *'' Cyathea australis'' *'' Cyathea cooperi'', native to New South Wales and Queensland *'' Dicksonia antarctica'', a species of evergreen tree fern {{Plant common name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euglandina Rosea
''Euglandina rosea'', the rosy wolfsnail or cannibal snail, is a species of medium-sized to large predatory air-breathing land snail, a carnivorous terrestrial pulmonate gastropod mollusk in the family Spiraxidae.MolluscaBase eds. (2020). MolluscaBase. Euglandina rosea (Férussac, 1821). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1289331 on 2020-11-09 This species is a fast and voracious predator, hunting and eating other snails and slugs.Clifford, Kavan T., Liaini Gross, Kwame Johnson, Khalil J. Martin, Nagma Shaheen, and Melissa A. Harrington. (2003)."Slime-trail Tracking in the Predatory Snail, Euglandina Rosea." Behavioral Neuroscience 117.5:1086-095. The rosy wolfsnail was introduced into Hawaii in 1955 as a biological control for the invasive African land snail, '' Lissachatina fulica''.Gerlach, Justin. (1994). “THE ECOLOGY OF THE CARNIVOROUS SNAIL EUGLANDINA ROSEA.” Diss. Wadham College, Oxford. This sn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ampullariidae
Ampullariidae, whose members are commonly known as apple snails, is a family of large freshwater snails that includes the mystery snail species. They are aquatic gastropod mollusks with a gill and an operculum. These snails simultaneously have a gill and a lung as functional respiratory structures, which are separated by a division of the mantle cavity. This adaptation allows these animals to be amphibious. Species in this family are considered gonochoristic, meaning that each individual organism is either male or female. Systematics and taxonomy Ampullariidae belongs to the superfamily Ampullarioidea, and is also its type family. It comprised two subfamilies according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005, which followed the classification proposed by Berthold (1991), including Ampullariinae Gray, 1824, and Afropominae Berthold, 1991. The current classification accepted by WoRMS includes Ampullariinae and Pomaceinae Starobogatov, 1983. Ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taro
Taro (; ''Colocasia esculenta'') is a root vegetable. It is the most widely cultivated species of several plants in the family Araceae that are used as vegetables for their corms, leaves, stems and Petiole (botany), petioles. Taro corms are a food staple in Culture of Africa, African, Oceania, Oceanic, East Asian, Southeast Asian and South Asian cultures (similar to Yam (vegetable), yams). Taro is believed to be one of the earliest cultivated plants. Common names The English term '':wikt:taro#English, taro'' was :wikt:taro#Maori, borrowed from the Māori language when James Cook, Captain Cook first observed ''Colocasia'' plantations in New Zealand in 1769. The form ''taro'' or ''talo'' is widespread among Polynesian languages:*''talo'': taro (''Colocasia esculenta'') – entry in the ''Polynesian Lexicon Project ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawaiian Duck
The Hawaiian duck (''Anas wyvilliana'') or koloa is a species of bird in the family Anatidae that is endemic to the large islands of Hawaii. Taxonomically, the koloa is closely allied with the mallard (''A. platyrhynchos''). It differs in that it is monomorphic (with similarly marked males and females) and non-migratory. As with many duck species in the genus ''Anas'', Hawaiian duck and mallards can interbreed and produce viable offspring, and the koloa has previously been considered an island subspecies of the mallard (''Anas platyrhynchos''). However, all major authorities now consider this form to be a distinct species within the mallard complex. Recent analyses indicate that this is a distinct species that arose through ancient hybridization between mallard and the Laysan duck (''Anas laysanensis''). The native Hawaiian name for this duck is ''koloa maoli'' (meaning "native duck"), or simply koloa. This species is listed as vulnerable by the IUCN Red List of Threatened Speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
