Dec 13, 2024 · Information and downloadable maps and datasets for ecoregions of North America, which are areas of general similarity in the type, quality, and quantity of environmental resources.

Mar 31, 2025 · Information and downloadable maps and datasets for ecoregions, which are areas of general similarity in the type, quality, and quantity of environmental resources.

Dec 13, 2024 · Information and downloadable maps and datasets for Level III and IV ecoregions of the continental United States. Ecoregions are areas of general similarity in the type, quality, and quantity of environmental resources.

The United States is unique among countries in that its terrestrial ecoregions span three biogeographic realms: the Nearctic, Neotropical, and Oceanian realms. Alaska is the most biodiverse state with 15 ecoregions across three biomes in the same realm. California comes in a close second with 13 ecoregions across four biomes in the same realm.

USGS mapping science helps us identify the varying characteristics of different ecosystems so that we can understand how they contribute to the wellbeing of all the inhabitants - humans, plants, and animals.

Jul 10, 2019 · It will show you the full hierarchy of ecoregions for any point in North America. Currently, the continental U.S. has one greater level of detail than Canada, Mexico, and Alaska. You can use this tool to look up your own ecoregion, …

Take a look at the map of the United States. The country can be divided up in two ways—one by state, and one by ecoregion. Whereas state boundaries were created by people, the ecoregion boundaries on this map were created by Mother Nature.

This map shows the level 1 ecoregions, the coarsest level of detail; there are 15 such regions in North America. These are further divided into 50 level 2 regions, 182 level 3 regions, and 967 level 4 regions.

Jan 27, 2025 · While the continental US does not technically contain every single one of the seven commonly recognized biomes, it boasts an astonishing array of ecosystems, each with unique characteristics and inhabitants. This makes it …

Jan 9, 2010 · The U.S. Geological Survey (USGS), with support from NatureServe, has modeled the potential distribution of 419 terrestrial ecosystems for the conterminous United States using a comprehensive biophysical stratification approach that identifies distinct biophysical environments and associates them with known vegetation distributions (Sayre and ...