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Celebrating 100 Years of Science! | 1925-2025

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Illustration of Halodule wrightii (Shoalweed) with fruits
Halodule wrightii (Shoalweed) with fruit
Illustration of Halophila ovalis (Paddle weed) with fruit
Halophila ovalis (Paddle weed) with fruit
Side view of a red lawn mower.
Lawn Mower
Pickleweed is an invasive or introduced plant in Hawaii. It has succulent, brilliant green leaves and is common in salt marshes and tidal shorelines. It grows slowly in soils with high salt concentrations and areas with seawater overwash where it suffers little competition from other plants. The species manages salts by sequestering them in cell vacuoles and eventually shedding the leaves.
Batis maritima (Pickleweed)
Some of the most common threats to the national parks ecosystems include those to quality of air, quality and quantity of available water, and the parks native species. Prescribed fire is used to prevent uncontrolled forest fires and to reduce the growth of nonnative species.
Generic Resources and Threats to the Northern…
Coreopsis (Coreopsis grandiflora) in farm field on the Eastern Shore of Maryland.
Coreopsis (Coreopsis grandiflora) closeup
Conceptual diagram illustrating a healthy coral reef ecosystem (left) and a biologically stressed coral reef ecosystem (right). Arrows indicate consumption or other negative impact to life corals.
Healthy vs. biologically stressed coral reef…
Tea made with mullein was used as an herbal remedy for lung ailments.
Common Mullein (Verbascum thapsus)
Illustration of a seaweed farm
Seaweed farm 2
Rocky Mountain wildflower in bloom
Cow parsnip (Heracleum maximum)
Salmon-Challis National Forest, Idaho
Invasive sign at trailhead
Illustration of Dactylis glomerata (Orchard Grass)
Dactylis glomerata (Orchard Grass)
Illustration of Miconia calvescens (Bush Currant)
Miconia calvescens (Bush Currant)
Codium fragile, or 'Dead Man's Fingers' is a seaweek invasive to the northwest Atlantic
Dead man's fingers (Codium fragile)
Illustration of a work glove
Work glove
Illustration of Halodule wrightii (Shoalweed)
Halodule wrightii (Shoalweed)
Illustration of Alliaria petiolata (Garlic Mustard)
Alliaria petiolata (Garlic Mustard)
Illustration of Berberis thunbergii (Japanese Barberry)
Berberis thunbergii (Japanese Barberry)
Illustration of Cirsium arvense (Creeping Thistle)
Cirsium arvense (Creeping Thistle)
Illustration of crew member performing exotic plant management
Exotic plant management: crew member
Illustration of Rosa multiflora (Multiflora Rose)
Rosa multiflora (Multiflora Rose)
Illustration of Verbascum thapsus (Common Mullein)
Verbascum thapsus (Common Mullein)
Illustration of Lythrum salicaria (Purple Loosestrife)
Lythrum salicaria (Purple Loosestrife)
Illustration of Bidens spp. (Bur-marigold)
Bidens spp. (Bur-marigold)
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