Invasives

Page 2 of 7, Total records 693

<< previous | 1 | 2 | 3 | 4 | 5 | 6 | 7 next >>
Species Description Photo
Brassica elongata (elongated mustard) Brassica elongata (elongated mustard) is a perennial herb that is native to Europe and Central Asia. Over most of its alien range, impacts of its presence are not yet known, but in a few areas Brassi ...
Brassica tournefortii (Asian mustard) Brassica tournefortii, commonly known as Sahara mustard, is an annual herb that is especially common in areas with wind-blown sediments and disturbed sites such as roadsides and abandoned fields. It a ...
Bromus moeszii (military grass) The invasive grass Bromus tectorum is troublesome to farmers and many ecosystems. It usually thrives in disturbed areas preventing natives from returning to the area. Disturbance such as overgrazing, ...
Bubo virginianus (Great Horned Owl) Bubo virginianus was intentionally introduced to Hiva Oa in French Polynesia to combat rats. This bird of prey has affected all native birds on the island. ...
Bubulcus ibis (Cattle Egret) Bubulcus ibis are small stocky herons that associate with grazing species of mammals both domestic and wild. They have strong migratory instincts and disperse thousands of miles in the direction of th ...
Buddleja davidii (orange eye butterflybush) Buddleja davidii is a shade-intolerant woody weed from China, which, with small wind-dispersed seeds, rapidly colonises bare or disturbed sites. It is cultivated for ornamental purposes for its pretty ...
Buddleja madagascariensis (smokebush) Buddleja madagascariensis commonly known as smokebush, is a shrub native to Madagascar; it has been introduced outside its native range as an ornamental plant. Easily dispersed bird or wind-bor ...
Bugula neritina (Common bugula) Bugula neritina (brown bryozoan) is an erect, bushy bryozoan. It is an abundant fouling organism that colonises any freely available substratum, including artificial underwater structures and vessel h ...
Butomus umbellatus (flowering rush) Butomus umbellatus commonly known as flowering rush, is a moderately tall, rush like perennial found on shores of lakes, ponds and riverbanks. It can tolerate water as deep or deeper than 2 met ...
Bythotrephes longimanus (spiny waterflea) Bythotrephes longimanus, the spiny water flea, is a predatory cladoceran native to northern Europe and Asia. It was introduced to the North American Great Lakes through ballast water and has si ...
Cabomba caroliniana (Carolina fanwort) Cabomba caroliniana is a submerged perennial aquarium plant that grows in stagnant to slow flowing freshwater. It spreads primarily by stem fragments and forms dense stands that crowd out well-establi ...
Cactoblastis cactorum (Cactus Moth) Cactoblastis cactorum is a moth that preys specifically on cacti species. It has been introduced in various locations around the globe to provide biological control of invasive cacti species and has p ...
Caesalpinia decapetala (Liane croc chien) Mysore thorn (Caesalpinia decapetala ) originates from tropical and eastern Asia but is now a serious weed in many locations such as South Africa, Tanzania, Zimbabwe, Hawaii, Portugal, New Zealand and ...
Caiman crocodilus (Common caiman, Spectacled caiman) The common caiman (Caiman crocodilus), is currently the most abundant crocodilian species and is the most harvested crocodile in the hide industry. Native to South and Central America, C. cr ...
Calliphora vicina (Blue bottlefly) The cosmopolitan fly Calliphora vicina has been able to conquer all bioregions, from the tropics to the arctic. Discovered on the Kerguelen Islands in 1978, its establishment is linked to rising tempe ...
Calluna vulgaris (heather) Heather, Calluna vulgaris native to Africa, temperate Asia and Europe is an invasive weed in its introduced range in Australia, the United States, Canada and New Zealand. It has also been repo ...
Canis lupus (Wolf) Canis lupus (the dog) is possibly the first animal to have been domesticated by humans. It has been selectively bred into a wide range of different forms. They are found throughout the world in many ...
Canna indica (Indian shot) Canna indica is a native of tropical America and is a very popular ornamental plant throughout the tropical world. This plant has become an invasive in Pitcairn and in New Zealand, where it grows in t ...
Capra hircus (domestic goat) The goat (Capra hircus) was domesticated 10,000 years ago in the highlands of western Iran. These herbivores have a highly varied diet and are able to ultilise a larger number of plant species than ot ...
Carassius auratus (Goldfish) Native to Asia, goldfish (Carassius auratus) have been introduced worldwide due to their popularity as pond and aquarium fish. Releases, both intentional and unintentional, have meant that this specie ...
Carcinus maenas (green crab) Carcinus maenas is native to Europe and northern Africa and has been introduced to the North America, Australia, parts of South America and South Africa. It is a voracious food generalist and i ...
Cardamine flexuosa (Wavy Bittercress) Woodland bittercress, Cardamine flexuosa is a highly variable perrenial herb which flowers vigourously and forms dense root mats that can exclude other species. Seeds possibly remain viable in ...
Cardamine glacialis (bittercress) A native of Chile, bittercress (Cardamine glacialis) grows at high altitudes close to the timber line. It needs to have its roots near water and is commonly found in marshes, bogs, water courses, lake ...
Cardiospermum grandiflorum (showy balloonvine) Balloon vine (Cardiospermum grandiflorum) is an invasive tendril climber growing in damp situations, often near river banks. It forms dense but localised infestations and competes with, and smothers, ...
Carduus macrocephalus Carduus nutans readily invades disturbed areas and outcompetes native plants. The best form of prevention is maintaining a healthy native ecosystem in recently disturbed sites. It is also invades graz ...
Carpobrotus edulis (hottentot fig) Carpobrotus edulis is a mat-forming succulent native to South Africa which is invasive primarily in coastal habitats in many parts of the world. It was often introduced as an ornamental plant or used ...
Haemorhous mexicanus (House Finch) Carpodacus mexicanus (house finch) is native to the western United States and Mexico. In 1940, wild birds illegally sold as "Hollywood Finches" in New York were released by dealers anxious to avoid p ...
Castor canadensis (american beaver) Castor canadensis (beaver) is native to North America, and has been introduced to Tierra del Fuego in southern South America, Finland, France, Poland and Russia in recent times. In its introduced rang ...
Casuarina equisetifolia (common ironwood) Casuarina equisetifolia is an evergreen conifer-like angiosperm. It has been introduced to new locations for coastal landscaping and erosion control. It has become invasive in Florida (USA) where it i ...
Cecropia polystachya (Trumpet tree) Cecropia schreberiana is a neotropical pioneer tree native to the Antilles and northern South America. It is strongly associated with post-hurricane, or other disturbance, colonization. It has ...
Toona calantas (Barbados cedar) Cedrela odorata is a native of the West Indies and from Central America to South America, including the Brazilian Atlantic and Amazon Rain Forest. It has been introduced to many Pacific Islands and So ...
Celastrus glaucophyllus (Climbing spindleberry) Celastrus orbiculatus is a deciduous, dioecious round-leaved vine that makes use of the 'sit and wait' invasion strategy. This species establishes under closed canopy forest conditions and persists in ...
Cenchrus ciliaris (Buffel Grass) Cenchrus ciliaris (Pennisetum ciliare), commonly known as buffel grass, is a perennial bunchgrass that forms thick mats. It is also known by its basionym Cenchrus ciliaris. Buffel grass ...
Centaurea diffusa (Diffuse Knapweed) Centaurea diffusa is a 0.2-1.0m tall, biennial or short-lived perennial species, with a long tap root. The plant is well adapted for survival in disturbed, semiarid environments as typified by ...
Plectocephalus americanus (Tecolote) Centaurea melitensis is a herb of the family Asteraceae. C. melitensis is native to Africa and Europe and was introduced to the United States. It is a highly competitive species that fo ...
Centaurea solstitialis (yellow starthistle) Centaurea solstitialis is a winter annual that can form dense impenetrable stands that displace desirable vegetation in natural areas, rangelands, and other places. It is best adapted to open grasslan ...
Cerastium fontanum (common chickweed) Among the 108 alien vascular species currently found in the sub-Antarctic Cerastium fontanum has a wide distribution only seriously rivalled in range by
Ceratitis capitata (Mediterranean fruit fly) Ceratitis capitata is considered a major tephritid fruit fly pest of economic importance attacking more than 300 different hosts, primarily temperate and subtropical fruits. The medfly as it is common ...
Ceratophyllum demersum (hornwort) Ceratophyllum demersum is a native of North America. It now has a worldwide distribution, at least in part due to the aquarium and pond trade. It is a submerged aquatic plant which is capable of formi ...
Cercopagis pengoi (fishhook waterflea) Cercopagis pengoi is a water flea native to the Ponto-Aralo-Caspian basin in South Eastern Europe, at the meeting point of the Middle East, Europe and Asia. It has spread from its native range and bec ...
Cervus elaphus (wapiti or elk) Red deer (Cervus elaphus) were introduced to several countries, including North and South America, New Zealand and Australia. In Argentina they have invaded several National parks, influencing native ...
Cestrum nocturnum (night jasmine) Cestrum nocturnum commonly known as queen of the night, is a popular ornamental species widely distributed for its strongly fragrant flowers that bloom at night. Having bird-dispersed seeds and ...
Trioceros jacksonii (JacksonÂ’s chameleon) Chameleo jacksonii or Jackson's chameleon, is a generalist predator native to Kenya and Tanzania. It has been exported to various countries as a pet species. Jackson's chameleons were accidentally rel ...
Channa argus (Spotted snakehead) The cold temperate northern snakehead (Channa argus) is found in areas in Russia, China and Korea. It is known for its voracious predation of other fish species, ability to withstand freezing and abil ...
Channa marulius (Bullseye snakehead) Little if any documentation is available on the effects of the bullseye snakehead (Channa marulius) on native fish populations. As a predator it may affect native ichthyofauna and subsequently ...
Charybdis hellerii (spiny hands) Charybdis hellerii is an Indo-Pacific, portunid crab that has invaded several locations in the Mediterranean Sea, by Erythrean invasion through the Suez Canal, and the South Atlantic in ...
Charybdis japonica (Asian paddle crab) The Asian paddle crab Charybdis japonica is a portunid (swimming) crab native to marine environments of Central and South East Asia. It may impact native esturine communities by competing for s ...
Acilepis divergens (Jack in the bush) Chromolaena odorata is a fast-growing perennial shrub, native to South America and Central America. It has been introduced into the tropical regions of Asia, Africa and the Pacific, where it is an inv ...
Osteospermum moniliferum subsp. moniliferum (Boneseed) Boneseed (Chrysanthemoides monilifera ssp. monilifera), and bitou bush (Chrysanthemoides monilifera ssp. rotundata) are South African coastal plants that have become invasi ...
Chrysobalanus icaco (coco plum) Chrysobalanus icaco is a perennial shrub that is native to tropical America. It has been introduced to different regions of the world to prevent soil erosion, as an ornamental shrub and for its edible ...
Chthamalus proteus Chthamalus proteus is a barnacle native to the Caribbean and western Atlantic. It was introduced to the Pacific in 1970s and first reported in Hawaii in 1995. It is now one of the most abundant ...
Cichla ocellaris (Tucunare) Cichla ocellaris is a piscivorus fish that has been introduced for sport fishing. Studies have concluded that where introduced this species predates on native species, competes for resources wi ...
Cichlasoma urophthalmum (Orange tiger) The Mayan cichlid (Cichlasoma urophthalmus) is a medium sized cichlid native to Central America. It has invaded regions of Florida including the Everglades National Park and has more recently b ...
Cinara cupressi cupressi (cypress aphid) Cinara cupressi is a brownish soft-bodied insect classified as an aphid. It has been discovered around the world feeding on various trees from the following genus': Cupressus, Junipe ...
Cinnamomum camphora (camphor tree) Cinnamomum camphora is native to Japan, China, Taiwan and northern Vietnam. C. camphora has become widely naturalised in Australia. In the United States, it grows along the Gulf Coast and in Californi ...
Cinnamomum loureiroi (cinnamon) Cirsium arvense is an herbaceous perennial in the Aster family. It occurs in nearly every upland herbaceous community within its range, and is a particular threat in grassland communities and riparian ...
Ciona intestinalis (transparent sea squirt) The sea vase, Ciona intestinalis, is a bryozoan that has such widespread distribution that its natural range continues to be a source of constant debate. A major pest on shellfish aquaculture p ...
Circus approximans (Swamp Harrier) Circus approximans was intentionally introduced and released on the island of Tahiti in French Polynesia to control rat populations. This bird of prey has colonized all of the Society Islands and has ...
Cirsium arvense (Creeping Thistle) ...
Cirsium vulgare (Spear Thistle) Cirsium vulgare is a herbaceous biennial from the Asteraceae family. It can reach a height of 40 to 120 cm. Originally from Europe, Asia and North Africa, it has spread to virtually all temperate regi ...
Citharexylum spinosum (fiddlewood) Citharexylum spinosum (fiddlewood) is a tree that is commonly planted for its multi-seasonal aesthetic appeal. After escape, it can cause problems by forming dense thickets that choke out othe ...
Clarias batrachus (Walking catfish) Clarias batrachus is native to southeastern Asia and has been introduced into many places for fish farming. Walking catfish, as it is commonly known (named for their ability to move over land), ...
Clematis terniflora (leatherleaf clematis) Clematis terniflora is a perennial vine that is frequently used as a landscaping plant. It is invasive, however, and displays aggressive growth in many areas of North America. C. terniflora< ...
Clematis vitalba (Evergreen clematis) Clematis vitalba is a perennial vine with climbing, woody stems that can grow 20 to 30 metres long. In the native ranges C. vitalba is associated with chalk and limestone areas, but outs ...
Clidemia hirta (kui) The invasive shrub Clidemia hirta is a problem in tropical forest understories in its introduced range, where it invades gaps in the forest, preventing native plant species from regenerating. The spre ...
Cucumis maderaspatanus (scarlet-fruited gourd) Coccinia grandis is a noxious vine that smothers vegetation and other objects forming a dense canopy. It acts as a host for melon fly and is a reservoir for other crop pests possibly including ring sp ...
Colubrina asiatica (Asian Snakewood) In its non-native locations, especially in coastal habitats, Colubrina asiatica aggressively outcompetes native vegetation. It is found, most often at the interface of uplands and submerged lan ...
Columba livia (Rock Pigeon) Columba livia is native to Europe and has been introduced worldwide as a food source, or for game. These pigeons prefer to live near human habitation, such as farmland and buildings. They cause consi ...
Coptotermes formosanus (Taiwan subterranean termite) Coptotermes formosanus is a subterranean termite with an affinity for damp places. Wherever there is wood (cellulose) and moisture there is the possibility that this species can inhabit that lo ...
Corbicula fluminea (Asiatic clam) Corbicula fluminea is a freshwater clam that has caused millions of dollars worth of damage to intake pipes used by power, water, and other industries. Many native clams are declining as C. ...
Cortaderia jubata (pampasgrass) Cortaderia jubata is a large tussock grass which is a substantial threat to the ecological quality of preserves, particularly in coastal and grassland sites. It has broad habitat requirements and grow ...
Cortaderia selloana (pampas grass) Cortaderia selloana is a tall tussock grass that can reach heights of 4 metres. It is found in subtropical regions in habitats such as disturbed areas along roads and trails. It forms dense stands tha ...
Corvus splendens (House Crow) The house crow (Corvus splendens) has established itself in at least 25 countries. It proliferates in human settlements and disturbed habitats and is especially suited to coastal settlements. I ...
Cotinus coggygria (European smoketree) Native to Asia and southeastern Europe, Cotinus coggygria is a shrub that occurs naturally in areas with rocky soil and poor soils. ...
Crassostrea angulata (pacific giant oyster) The bivalve Crassostrea gigas is a filter feeder. It has been introduced from Asia across the globe. In North America and the Australasia-Pacific regions C. gigas is known to settle into dense aggrega ...
Crassula helmsii (swamp stonecrop) Crassula helmsii is a macrophyte native to Australia and New Zealand. It has become an especially problematic invasive in the United Kingdom and has established troublesome populations througho ...
Crepidula fornicata (common Atlantic slippersnail) Crepidula fornicata is a protandrous hermaphrodite mollusc, which means that the animals start their lives as males and then subsequently may change sex and develop into females. This species c ...
Cricetomys gambianus (Gambian rat) Native to Africa, the Gambian pouched rat (Cricetomys gambianus) has been introduced to the Florida Keys, United States. This large, highly fecund, omnivorous rodent poses a threat to native ec ...
Cronartium ribicola (White pine blister rust) White pine blister rust, a widely known tree disease in North America, is caused by the introduced fungus Cronartium ribicola. C. ribicola is a heteroecious (requires two hosts to comple ...
Cryphonectria parasitica (Chestnut blight) Cryphonectria parasitica is a fungus that attacks primarily Castanea spp. but also has been known to cause damage to various Quercus spp. along with other species of hardwood tree ...
Cryptococcus fagisuga (beech scale) The beech scale insect (Cryptococcus fagisuga), along with Neonectria ascomycete fungi form the disease-complex responsible for beech bark disease (BBD) of American and European beech. B ...
Cryptostegia grandiflora (Palay rubbervine) Cryptostegia grandiflora is a self supporting, many-stemmed vine that is capable of growing over trees up to 15m high, smothering and pulling them down. It occurs in dry and moist forests in disturbed ...
Cryptostegia madagascariensis (Madagascar rubbervine) Cryptostegia madagascariensis a native of Madagascar, is found in tropical climates world-wide where it is has naturalized. It has been dispersed widely largely due to its popularity as an orna ...
Ctenopharyngodon idella (silver orfe) Grass carp (Ctenopharyngodon idella) is a large cyprinid introduced worldwide as a biological control of aquatic vegetation as well as a food fish. It is a voracious feeder which is incredibly ...
Culex quinquefasciatus (southern house mosquito) The mosquito Culex quinquefasciatus is one of the most common and widespread members of the Culex pipiens (Cx. pipiens) complex, which includes vectors of St. Louis encephalitis virus, West Nile virus ...
Cupaniopsis anacardioides (Carrotwood) Cupaniopsis anacardioides commonly known as carrotwood is an evergreen tree that is usually single-trunked and grows to 10.7m tall. It is capable of invading herbaceous and scrub communities. O ...
Cuphea platycentra (cigar flower) Cuphea ignea is an ornamental plant that has become naturalized in a few cases. This is a major invasive plant of La Réunion where it can become dominant or co-dominant in natural or semi-natural envi ...
Cyathea cooperi (Cooper's cyathea) Native to Queensland, Australia, Cyathea cooperi has invaded several islands in the Pacific. It is a fast growing fern that displaces native vegetation easily by forming dense stands. C. cooperi has b ...
Cygnus olor (Mute Swan) Cygnus olor (mute swans) are a large swan species that can utilise a variety of aquatic habitats. They consume submerged aquatic vegetation to the point of overgrazing, which in turn reduces the carr ...
Cylindroiulus latestriatus Cylindroiulus latestriatus is a detritivore, an important regulator of ecosystem nutrient cycling processes. It's introduction to Gough Island (Tristan Islands, Tristan da Cunha, UK) may cause ...
Vincetoxicum rossicum (swallowwort) Cynanchum rossicum is a perennial vine native to Eastern Europe that has established invasive populations in Canada and the USA. Once established, dense monocultures of the plants displace native vege ...
Cynara cardunculus (artichoke thistle) Artichoke thistle (Cynara cardunculus) is a large perennial herb native to the Mediterranean region of Europe. It grows rapidly and produces very deep roots, and forms large rosettes up to 1 m ...
Cynodon dactylon (manienie) Cynodon dactylon is adapted to survive both extended dry periods and flooding conditions. It is a potential agricultural weed and a commonly used as a lawn grass. ...
Cynoglossum clandestinum (gypsyflower) Cynoglossum officinale otherwise known as hound's tongue in common vernacular is a biennial herbaceous plant that invades disturbed areas and waste places. It occurs widespread throughout North ...
Cyperus rotundus (nutgrass) Cyperus rotundus (purple nutsedge) is a weed in over 90 countries and the world's worst invasive weed based on its distribution and effect on crops. Its complex underground network of tubers, basal ...
Cyprinella lutrensis (Red shiner) Cyprinella lutrensis commonly known as red shiner, is native to the rivers and streams of the Midwest of the United States. Its use as bait has helped in expanding its range to include the sout ...
Cyprinus carpio (Common carp) The introduction of fish as a source of protein for human consumption into tropical and subtropical lake systems is continuing apace. The common carp (Cyprinus carpio) has been cultured for 2500 ye ...
Cytisus scoparius (Broomtops) The densely growing Cytisus scoparius is a shrub indigenous to Europe and northern Asia that favours temperate climates and is found in abundance on sandy pastures and heaths. It is sparingly n ...
Dalbergia sissoo (Indian Rosewood) Dalbergia sissoo is a perennial tree that is economically important for its value in forestry, agroforestry, and horticulture. It provides timber, fuelwood, fodder, has medicinal value, used ex ...
Daphnia lumholtzi Daphnia lumholtzi is a cladoceran commonly referred to as a water flea. It is type of zooplankton that serves as an important food source for larval and juvenile fish. It is invading reservoirs and la ...
<< previous | 1 | 2 | 3 | 4 | 5 | 6 | 7 next >>
Invasive Status provided by Global Invasive Species Database Downloaded on 10 May 2011.