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  2. North American Environmental Atlas - Wikipedia

    en.wikipedia.org/wiki/North_American...

    Information included in the Atlas includes accurate, seamless maps, documentation, and geospatial data that crosses political borders. This data is displayed as series of interactive map layers in an easy to use map viewer format. Most layers in the North American Environmental Atlas are at a scale of 1:1:10,000,000 or finer. [citation needed]

  3. List of ecoregions in North America (CEC) - Wikipedia

    en.wikipedia.org/wiki/List_of_ecoregions_in...

    The North American Deserts are home to a variety of plant species. These plants are categorized as either xerophytes, adapted to the arid conditions of the desert, or phreatophytes, which are plants with very deep roots that are dependent on a permanent water supply and survive by tapping groundwater. [3] Agave lophantha

  4. Groundwater-dependent ecosystems - Wikipedia

    en.wikipedia.org/wiki/Groundwater-dependent...

    An ecosystem can be directly or indirectly dependent, [7] as well as have a variation in groundwater use throughout the seasons. [1] There are a variety of methods for classifying types of groundwater-dependent ecosystems either by their geomorphological setting and/or by their respective groundwater flow mechanism (deep or shallow). [6]

  5. New map depicts the world’s hidden reserves of groundwater in ...

    www.aol.com/map-depicts-world-hidden-reserves...

    A map released Tuesday in the journal Nature offers the first comprehensive map of the world’s underground water sources and the ecosystems that depend on them. In…

  6. How a water scientist hopes to save California habitats that ...

    www.aol.com/news/water-scientist-hopes-save...

    California is the only state with a groundwater law that includes provisions intended to protect groundwater-dependent ecosystems. But the law, adopted in 2014, gives considerable leeway to local ...

  7. List of ecoregions in the United States (WWF) - Wikipedia

    en.wikipedia.org/wiki/List_of_ecoregions_in_the...

    Ecoregions of North America, featuring the 50 United States, the District of Columbia and the five inhabited territories. The following is a list of ecoregions in the United States as identified by the World Wide Fund for Nature (WWF). The United States is a megadiverse country with a high level of endemism across a wide variety of ecosystems.

  8. List of ecoregions in the United States (EPA) - Wikipedia

    en.wikipedia.org/wiki/List_of_ecoregions_in_the...

    The Commission's 1997 report, Ecological Regions of North America, provides a framework that may be used by government agencies, non-governmental organizations, and academic researchers as a basis for risk analysis, resource management, and environmental study of the continent's ecosystems. [1]

  9. Watersheds of North America - Wikipedia

    en.wikipedia.org/wiki/Watersheds_of_North_America

    Watersheds of North America are large drainage basins which drain to separate oceans, seas, gulfs, or endorheic basins. There are six generally recognized hydrological continental divides which divide the continent into seven principal drainage basins spanning three oceans ( Arctic , Atlantic and Pacific ) and one endorheic basin.