Abyssal: Ocean habitats below the depth of effective penetration of light.

Additional Topics: Additional topics related to the ecological management of the species.

Adult Food Habits: Trophic type which characterizes the food habits of the adult form of the element. Values include: carnivore, piscivore, invertivore, herbivore, granivore, frugivore, nectarivore, detritivore, scavenger, coprophagous, parasitic, nonfeeding, unknown. The trophic type should constitute 90% of the element's seasonal diet for any season of the year. Carrion is included in each of the animal-type food categories.

Adult Phenology: Phenology type (s) of the animal during its adult stage. Values include: hibernates/aestivates, circadian, diurnal, nocturnal, crepuscular.

Alliance Description: A summary of the geographic range, structure, composition and environmental setting for the Alliance.

Alliance Information Author: The author principally responsible for preparing or significantly updating the description and information regarding the alliance.
For more information see Classification of Ecological Communities.

Alliance Key: A unique indentifier assigned to the Alliance. The Alliance key consists of the letter A plus a sequential counter (e.g., A.1, A.2, etc.), separated by a period (.). For more information see Classification of Ecological Communities.Classification of Ecological Communities.

Alliance Name: The name of the Alliance is composed of the scientific names of the dominant or diagnostic plants. Plants in similar strata are separated by hyphens, those in different strata by slashes. Plants in the upper strata are listed first. Alliances are considered upland types unless they contain a hydrologic modifier (e.g., Acer saccharinum Temporarily Flooded Forest Alliance). For Associations this is the name of the Alliance to which the Association belongs. There is no Alliance for Ecological Systems. For more information see Classification of Ecological Communities.

Alliance : For more information see Classification of Ecological Communities.

Alpine: Barren substrate or herbaceous and low shrubby vegetation above mountain timberline.
For more information see Classification of Ecological Communities.

Alternate Separation Procedure : Description of the procedure to be used to separate occurrences in cases when separation distances cannot be specified.

American Fisheries Society Status: Code for the status categories assigned by the American Fisheries Society Endangered Species Committee. The statuses are applied to mussels, crayfishes and freshwater fishes. The committee examines the entire range of each species or subspecies on their list and designates one of five categories: Endangered (E) (note: E* = Possibly Extinct), Threatened (T), Special Concern (SC), Undetermined (U) or Currently Stable (CS).

Association For more information see Classification of Ecological Communities .

Association Name The name of Associations that are members of the Ecological System..

Association Unique Identifier The unique identifier of Associations that are members of the Ecological System..

Author (Occurrence Specifications): Name of the person principally responsible for preparing this version of the occurrence specifications..

Author (Population Viability Criteria): Name of the person principally responsible for preparing this version of the population/occurrence viability criteria.