Glossary - E
     
 
   
 

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

E

Ecology Comments: Summary of the ecology of the element. For animals, comments on population density, dispersal distances, home range size, annual and seasonal fluctuations in population size, nonbreeding coloniality/sociality, major predators, competitors, parasites, age-specific survival rates, and other significant ecological factors are included.

Ecological Division Code: Ecological Divisions are sub-continental landscapes reflecting both climate and biogeographic history, modified from Bailey (1995 and 1998) at the Division scale. See Ecological Systems of the United States: A Working Classification of U.S. Terrestrial Systems (Comer et al. 2003) on the NatureServe website for more information.
Ecological Division Name: Ecological Divisions are sub-continental landscapes reflecting both climate and biogeographic history, modified from Bailey (1995 and 1998) at the Division scale. See Ecological Systems of the United States: A Working Classification of U.S. Terrestrial Systems (Comer et al. 2003) on the NatureServe website for more information.
Ecological Division Occurrence Status: The degree of certainty that the Ecological System occurs in a particular Ecological Division. Values include: C = Confident or Certain, P = Predicted or Probable, ? = Possible, X = Presumed Extirpated, [] = Data Entry Incomplete.
Ecological System Name: The names of the Ecological Systems of which the Association is a member.
Ecological System Placement:The names of the Ecological Systems of which the Association is a member.
Ecological System Unique Identifier: The unique identifiers of the Ecological Systems of which the Association is a member.
Economic Comments: Data provided in comprehensive reports for plant species. Comments on the human or economic uses and the major economic impacts of the taxon.
Economic Uses: Data provided in comprehensive reports for plant species. A list of categories that describe the economic uses of the taxon.
Economically Important Genus: Data provided in comprehensive reports for plant species. If yes, the species belongs to a genus with known economic use.

Element Description Author(s): Primary author(s) of the edition of the characterization text. Note: Usually not recorded except when substantial data has been developed.

Element Description Edition Date: Date of the edition of the characterization text (i.e., the date it was first completed, or since then, comprehensively revised). Note: Usually not recorded except when substantial data has been developed.

Element Ecology and Life History Author(s): Primary author(s) of the edition of the life history text. Note: Usually not recorded except when substantial data developed.

Element Ecology and Life History Edition Date: Date of the edition of the life history text. Note: Usually not recorded except when substantial data developed.

Element Occurrence (EO): Area of land and/or water where a species or natural community is, or was, present and has practical conservation value. For more information see Natural Heritage Methodology.

Element: Unit of natural biological diversity, representing species (or infraspecies taxa), ecological communities, ecological systems, or other non-taxonomic biological entities, such as migratory species aggregation areas. For more information see Classification.

Endemism: Code indicating the jurisdictional endemism of the element. Values include: S = state/province endemic, N = national endemic, M = multinational distribution. Additionally for animals: MSB = occurs in multiple nations, breeds in only one nation, MNB = occurs in multiple nations, breeds in multiple state/provinces of one nation, NSB = occurs in multiple subnations of only one nation, breeds in only one state/province.

Environmental Specificity Comments: Comments on the environmental specificity of the Element resulting from habitat preferences or restrictions.

Environmental Specificity: A code indicating indicating the degree to which a species or ecosystem depends on a relatively scarce set of habitats, substrates, food types, or other abiotic and/or biotic factors within the overall range. Relatively narrow requirements are thought to increase the vulnerability of a species or ecosystem. For more information see NatureServe Conservation Status.

Environmental Summary: Summary of the information available on the environmental conditions associated with this Alliance, including a description of any other important aspects of the environment that affect this particular Alliance.

Estimated Number of Element Occurrences Comments: Comments on the estimated number of occurrences of the Element.

Estimated Number of Element Occurrences: Code indicating the estimated, inferred, or suspected number of extant occurrences of the Element worldwide. Values include: Z = 0, A = 1-5, B = 6-20, C = 21-80, D = 81-300, E = >300, U = Unknown

Estuarine Habitat(s): Estuarine habitat(s) where the element is found. Values include: bay/sound, river mouth/tidal river, lagoon, tidal flat/shore, herbaceous wetland, scrub-shrub wetland, forested wetland.

Excellent Viability: Description of what qualifies as an occurrence with excellent viability, taking into consideration all available knowledge, both historical and current, of the species at a particular location. For more information see Population Viability.

Exemplary Occurrence Site Name: Name of the site with the most exemplary occurrence of the association throughout its global range.

Exotic:: The species is present in the nation or subnation due to direct or indirect human intervention.

 

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