Photographer: E. M. Barrows
Identifier: E. M. Barrows
Collector: not applicable
Keywords: A alien invasive plant blue berry Forest Ecology green berry information sheet Porcelainberry vine
Alien, invasive organisms have a large impact on the Washington, D.C., Area (WDCA) and on other areas in many parts of the world.
In the WDCA, hundreds of species have invaded our parks, yards, and other places.
A group of invasive vines including Asiatic Bittersweet, English Ivy, Japanese Honeysuckle, and Porcelainberry cover many other plants and the group through the Area.
These vines can form dense covers over other plants, competing for nutrients and sunlight.
They can kill native plants, including trees.
When they do this, they change ecosystems, by removing plants which many native organisms consume.
numbers of native plants and their associates.
The Asian Tiger Mosquito is a major alien, invasive insects in the WDCA. This fly quickly breeds in even small bodies of water, such as jars and soda cans that contain rain water.
These mosquitos are great nuisances because they will bite people and other animals throughout both the day and night.
They can also transmit human diseases.
This Website (BDWA) has many images of alien species.
Information sheets on WDCA alien species include:
Information Sheet, Asian Tiger Mosquito
Information Sheet, Porcelainberry
Table. Some effects of alien, invasive species in the Washington, D.C., Area
competition for nutrients (e.g., some bird, many plant and insect species)
competition for pollinators (e.g., many plant species)
competition for light (e.g., many plant species)
competition for space (e.g., some bird species, many plant species English Ivy, English Sparrows, Starlings)
competition for water (e.g., many plant species)
parasitization of native species (e.g., some fungus species Chestnut Blight, Dutch Elm Disease)
predation of native species (e.g., some insect species Multicolored Asian Lady Beetle)
Table. Some main alien, invasive species in the Washington, D.C., Area
Acorus calamus, Sweetflag (forb)
Aedes albopictus, Asian Tiger Mosquito
Ailanthus altissima, Tree-of-heaven (tree)
Alliaria petiolata, Garlic Mustard (forb)
Ampelopsis brevipedunculata, Porcelainberry (vine)
Celastrus orbiculatus, Asiatic Bittersweet (vine)
Epilachna varivestis, Mexican Bean Beetle
Euonymus fortunei, Winter-creeper (vine)
Exomala orientalis (= Anomala orientalis), Oriental Beetle
Forficula auricularia, European Earwig (insect)
Harmonia axyridis, Multicolored-Asian Lady Beetle
Hedera helix, English Ivy (vine)
Lymantria dispar, Gypsy Moth
Lonicera japonica, Japanese Honeysuckle (vine)
Lonicera maacki, Armur Honeysuckle (tree)
Myocastor coypus, South American Nutria
Paratrechina flavipes, Chinese Paratrechina Ant
Passer domesticus, English Sparrow
Pieris rapae, Imported Cabbage Butterfly
Polygonum perfoliatum, Mile-a-minute Vine
Popillia japonica, Japanese Beetle
Pueraria lobata, Kudzu Vine
Ranunculus ficaria, Lesser Celandine (forb)
Sturnella vulgaris, Starling (bird)
Please click here to go to Weeds Gone Wild for fact sheets on plants in this table, a list of invasive plants of the US, and related information.