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  2. Desert ecology - Wikipedia

    en.wikipedia.org/wiki/Desert_ecology

    Desert ecology is the study of interactions between both biotic and abiotic components of desert environments. A desert ecosystem is defined by interactions between organisms, the climate in which they live, and any other non-living influences on the habitat. Deserts are arid regions that are generally associated with warm temperatures; however ...

  3. Biological soil crust - Wikipedia

    en.wikipedia.org/wiki/Biological_soil_crust

    It has been shown that while some native desert plant species have seeds with self-burial mechanisms that can establish readily in crusted areas, many exotic invasive plants do not. Therefore, the presence of biological soil crusts may slow the establishment of invasive plant species such as cheatgrass ( Bromus tectorum ).

  4. Yuma Desert - Wikipedia

    en.wikipedia.org/wiki/Yuma_Desert

    Agave deserti, a plant native to the Yuma Desert. Vegetation is dominated by the creosote bush (Larrea tridentata), which is widespread.The saguaro cactus (Carnegiea gigantea) and the ocotillo (Fouquieria splendens) are common on the bajadas, while many of the desert trees found are restricted to dry watercourses; these include paloverde (Parkinsonia), the desert willow (Chilopsis linearis ...

  5. Desert greening - Wikipedia

    en.wikipedia.org/wiki/Desert_greening

    A satellite image of the Sahara, the world's largest hot desert and third largest desert after Antarctica and the Arctic. Desert greening is the process of afforestation or revegetation of deserts for ecological restoration (biodiversity), sustainable farming and forestry, but also for reclamation of natural water systems and other ecological systems that support life.

  6. Desertification in Africa - Wikipedia

    en.wikipedia.org/wiki/Desertification_in_Africa

    A 10.3 million km2 area, or 34.2% of the continent's surface, is at risk of desertification. If the deserts (Sahara and Kalahari) are taken into account, the affected and potentially affected area is roughly 16.5 million km2 or 54.6% of all of Africa. 5.7 percent of the continent's surface is made up of very severe regions, 16.2 percent by ...

  7. Even desert plants known for their resilience are burning and ...

    www.aol.com/news/even-desert-plants-known...

    Increasingly frequent and severe heat waves in the Southwest are damaging some desert plants known for thriving in harsh conditions. Saguaro cacti and agave have both suffered in sweltering ...

  8. Biopsy - Wikipedia

    en.wikipedia.org/wiki/Biopsy

    An incisional biopsy or core biopsy samples a portion of the abnormal tissue without attempting to remove the entire lesion or tumor. When a sample of tissue or fluid is removed with a needle in such a way that cells are removed without preserving the histological architecture of the tissue cells, the procedure is called a needle aspiration ...

  9. Ecology of the Sierra Nevada - Wikipedia

    en.wikipedia.org/wiki/Ecology_of_the_Sierra_Nevada

    The lowest-elevation biotic zone in the Sierra Nevada is found along the boundary with the Central Valley. [5] This zone, stretching in elevation from 500 to 3,500 feet (150 to 1,070 m), is the foothill woodland zone, an area that is hot and dry in the summer with very little or no snow in the winter. [5]