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Celebrating 100 Years of Science! | 1925-2025
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Badlands National Park sits upon highly erodible sedimentary rocks that form distinctive pinnacles, gullies and spires. Threats to the park include illegal fossiling and the invasion of weeds and non-native grasses.
Badlands National Park
Landowner and Chesapeake Watershed Forester discuss how to handle the invasive poison ivy climbing the trees, on an Eastern Shore of Maryland farm.
Forester and landowner consult
This fish is used for aquaculture throughout Asia, particularly in China and Vietnam. Silver carp were imported to North America in the 1970s to control algae growth in aquaculture and municipal wastewater treatment facilities. They escaped from captivity soon after their importation. They are considered a highly invasive species.
Hypophthalmichthys molitrix (Silver Carp)
The Mediterranean mussel is a species of bivalve, a marine mollusc in the family Mytilidae. It is an invasive species in many parts of the world, as well as an object of aquaculture in Spain and China.
Mytilus galloprovincialis (Mediterranean Mussel)
Front view illustration of a Christmas Berry. An introduced, invasive shrub or small tree.
Heteromeles arbutifolia (Christmas Berry)
Front view illustration of a West Indian Lantana. It is a weed of cultivated land, fence lines, pastures, rangelands, and waste places. It thrives in dry and wet regions and often grows in valleys, mountain slopes, and coastal areas. It is somewhat shade-tolerant and, therefore, can become the dominant understory in open forests or in tropical tree crops. In pastures it forms dense thickets which shade out and encroach upon desirable pasture plants. With time it can form pure stands over large areas, the
Lantana camara (West Indian Lantana)
Known as Koa haole (foreign koa) in Hawaii, or leucaena, is abundant as a weed in dry lowlands of Hawaii, often forming dense thickets in lowlands and lower mountain slopes of 2500 ft (762 m) altitude.
Leucaena leucocephala (White Leadtree)
bamboo orchid (Arundina graminifolia)
bamboo orchid (Arundina graminifolia) among common swordfern (Nephrolepis exsaltata) around Kileaua caldera.
bamboo orchid among common swordfern
Illustration of crew member performing exotic plant management
Exotic plant management: crew member

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