• ES Picture of the Day 11 2020

    From Black Panther@21:1/186 to All on Fri Dec 11 11:00:40 2020
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.

    Duckweed at Crabtree Nature Center, Illinois

    December 11, 2020

    Crabtree nature center22222222222

    Photographer: Dale Hugo
    Summary Author: Dale Hugo

    Crabtree Nature Center in Barrington Hills, Illinois has several
    ponds this one, the Sulky Pond, is covered with duckweed
    fronds, a fast-growing, aquatic plant. It spreads by clinging to the
    feathers of migratory birds and can quickly cover a small pond.
    It's not pond scum or algae. And yes, the ducks love it. It
    provides cover for fish and amphibians, but its role in oxygen
    production isn't that useful. Many view it as a pestiferous plant. Cold
    weather will quickly kill it off, but next year it'll be back growing
    quickly in late summer into the fall.
    This scene also shows the branches of a dead oak, marginal water
    plants, and the beginning of fall colors. A 1.4-mile (2.25 km) trail
    encircles Sulky Pond. Note that Crabtree covers over 1,000 acres of
    natural, glaciated terrain that's being restored to its pre-settler
    glory. Photo taken October 8, 2020.

    Photo Details: Camera: Samsung SM-A102U; Exposure Time: 0.0007s;
    1/1337); Aperture: ƒ/1.9; ISO equivalent: 40; Focal Length (35mm): 27
    * Crabtree Nature Center, Illinois Coordinates: 42.124267,

    Related EPODs

    Duckweed at Crabtree Nature Center, Illinois Hygroscopic
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    Following the Sun Indian Pipe

    Plant Links

    * Discover Life
    * Tree Encyclopedia
    * What are Phytoplankton?
    * Encyclopedia of Life - What is a Plant?
    * USDA Plants Database
    * University of Texas Native Plant Database
    * Plants in Motion
    * What Tree is It?

    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.


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