Many non-native plants have been introduced into new territories, initially as either ornamental plants or for erosion control, stock feed, or forestry. Whether an exotic will become an invasive species is seldom understood in the beginning, and many non-native ornamentals languish in the trade for years before suddenly naturalizing and becoming invasive.
Peaches, for example, originated in China, and have been carried to much of the populated world. Tomatoes are native to the Andes. Squash (pumpkins), maize(corn), and tobacco are native to the Americas, but were introduced to the Old World. Many introduced species require continued human intervention to survive in the new environment. Others may become feral, but do not seriously compete with natives, but simply increase the biodiversity of the area.
Dandelions are also introduced species to North America.
A very troublesome marine species in southern Europe is the seaweed Caulerpa taxifolia. Caulerpa was first observed in the Mediterranean Sea in 1984, off the coast of Monaco. By 1997, it had covered some 50 km². It has a strong potential to overgrow natural biotopes, and represents a major risk for sublittoral ecosystems. The origin of the alga in the Mediterranean was thought to be either as a migration through the Suez Canal from the Red Sea, or as an accidental introduction from an aquarium.
Japanese knotweed grows profusely in many nations. Human beings introduced it into many places in the 19th century. It is a source of resveratrol, a dietary supplement.
Read more about this topic: Introduced Species
Other articles related to "plants, introduced, introduced plants":
... In plants, synanthropes are classified into two main types - apophytes and anthropophytes ... are synanthropic species of foreign origin, whether introduced voluntarily or involuntarily ... They can be subdivided into the following Archaeophytes - introduced before the end of the 15th century Kenophytes - introduced after the 15th century Ephemerophytes - anthropophytic plants that appear episodically ...
... Many non-native plants have been introduced into new territories, initially as either ornamental plants or for erosion control, stock feed, or forestry ... Squash (pumpkins), maize(corn), and tobacco are native to the Americas, but were introduced to the Old World ... Many introduced species require continued human intervention to survive in the new environment ...
Famous quotes containing the words plants and/or introduced:
“We have been God-like in our planned breeding of our domesticated plants and animals, but we have been rabbit-like in our unplanned breeding of ourselves.”
—A.J. (Arnold Joseph)
“Young women ... you are, in my opinion, disgracefully ignorant. You have never made a discovery of any sort of importance. You have never shaken an empire or led an army into battle. The plays by Shakespeare are not by you, and you have never introduced a barbarous race to the blessings of civilization. What is your excuse?”
—Virginia Woolf (18821941)