Glossary - U
     
 
   
 

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

U

Upland: Upland ecological systems do not display characteristics of wetlands: (1) there is little to no flooding or soil saturation; (2) the vegetation has few plants which are adapted to grow in water or in a soil or substrate that is occasionally oxygen deficient due to saturation (few, if any, hydrophytes); and (3) the soils are not saturated long enough during the growing season to produce oxygen-deficient conditions in the upper part of the soil, which commonly includes the major part of the root zone of plants (non-hydric soils).
U.S. & Canada State/Province Distribution-Plants and Animals: The state and province distribution of a species in the United States and Canada, indicating states and provinces where the element is presumed native (no symbol), extirpated (symbol), or exotic (symbol). Consult pertinent state/province Heritage Program or Conservation Data Center for most current state/province status information.
U.S. & Canada State/Province Status: The NatureServe conservation status, developed by NatureServe and its natural heritage member programs, of a species from a state/province perspective, characterizing the relative rarity or imperilment of the species. Together these values provide national distribution data. Due to the dynamic nature of the data, occasional discrepancies between State/Province and Global Conservation Status remain unresolved. State/Province status ranks are maintained locally; consult pertinent state/province Heritage Program or Conservation Data Center for most current state/province status information. For more information see Distribution Sources, and Conservation Status.

U.S. Endangered Species Act: Current status of the taxon as designated or proposed by the U.S. Fish and Wildlife Service (USFWS) or the U.S. National Marine Fisheries Service, and as reported in the U.S. Federal Register in accordance with the U.S. Endangered Species Act of 1973, as amended. For more information see U.S. ESA.

U.S. Distribution (Ecological Communities & Systems): The U.S. distribution of an Ecological Community or System at the state level. A "?" next to a state means that the Ecological Community or System is suspected, but not confirmed, to occur there. Note: Absence of a state cannot be interpreted as a definitive statement that the Ecological Community or System does not occur there.

U.S. Federal Status (Comments on): Any comments necessary to explain the designated or interpreted status of the taxon under the U.S. Endangered Species Act (USESA). Differences in taxonomic treatment or nomenclature between the regulating agency and NatureServe are discussed. In addition, further documentation and clarification regarding the status of the element may be included. For example, if a species is delisted, the information and/or reasoning behind the decision is described in this field. For more information see U.S. ESA.

U.S. Federal Status Date: Date of publication of the United States Federal Status in the Federal Register. For more information see U.S. ESA.

U.S. Fish & Wildlife Service Lead Region: The United States Fish and Wildlife Service (USFWS) code for the USFWS region with lead responsibility for the element.

U.S. Forest Service Ecoregions Division Name: The names of the divisions from the U.S. Forest Service Ecoregion Classification.

U.S. Forest Service Ecoregions Domain Name: The names of the domains from the U.S. Forest Service Ecoregion Classification.

U.S. Forest Service Province Ecoregions Code: Codes for the U.S. Forest Service Ecoregional Provinces.

U.S. Forest Service Province Ecoregions Description: A brief description of the province from the U.S. Forest Service Ecoregion Classification.

U.S. Forest Service Province Ecoregions Name: The names of the provinces from the U.S. Forest Service Ecoregion Classification.

U.S. Forest Service Ecoregions Province Province Occurrence Status: The degree of certainty that the Ecological Coummunity or Ecological System occurs in a particular U.S. Forest Service province. Values include: C = Confident or Certain, P = Predicted or Probable, ? = Possible, X = Presumed Extirpated, [] = Data Entry Incomplete.

U.S. Forest Service Section Name: The names for the sections from the U.S. Forest Service Ecoregion Classification.

Unique Identifier: A unique 10-character identifying code assigned to each element. Note: - This code is no longer the primary unique identifier in the Biotics 4.0 system as it was in the previous Biological and Conservation Data system. No record is kept of past use of element codes.

Use Class: Use classes are assigned to migratory animal species that utilize geographically and seasonally disjunct locations, and are used to indicate which season or behavior is associated with a particular area in order to ensure that all of the different locations utilized by such a species throughout its life cycle are identified and considered for conservation attention. Because the criteria for what constitutes a valid occurrence and appropriate distances for separating occurrences will typically vary depending on the season of use for occurrences of such animals, a set of occurrence specifications is developed for each use class.

UT: Abbreviation for the state of Utah. (United States)
 

NatureServe