Palustrine Habitat(s): Palustrine habitat(s) that contribute significantly to the survival of reproduction of the species. Values include: temporary pool, herbaceous wetland, scrub-shrub wetland, forested wetland, bog/fen, riparian, aerial.

Partially Isolated Wetlands: These types are defined where >80% of all known occurrences have very infrequent interchange of surface water between the wetland and regulated (potentially navigable) water bodies. Practically, this is limited to geographically isolated wetlands where various types of substrates are characteristic. No assumptions are made about the type and frequency of groundwater exchange between these wetlands and regulated water bodies.

NOTE: These definitions were developed solely to facilitate the generation of a classification of isolated wetland ecological system types from NatureServe\'s databases, to create linkages to rare species, and to allow documentation of scientific methodology. They are NOT intended to be a guide for defining individual on-the-ground occurrences of isolated wetlands for regulatory or other purposes. These definitions do not represent an endorsement by NatureServe (a non-advocacy organization) of any particular regulatory or other use by the Environmental Protection Agency, the Army Corps of Engineers, or other federal and state agencies.

Pelagic: Open ocean waters, above the abyssal zone and not associated with the shore.

Percent Cover Class (Floristic Composition)
The cover class which best represents the total percent cover of the designated component species in the designated stratum/lifeform of the ecological community.

Percent Cover Class (Vegetation Structure)
The cover class that best represents the total percent cover for each stratum/lifeform (identified in the associated Stratum and Lifeform columns) in the community.

Phenology Comments: Comments on the seasonal or daily activity of the species and any geographic variation in these attributes.

Phylum: Taxonomic Phylum

Physiognomy: Summary description of the characteristic structure of the vegetation that comprises the Alliance.

Piscivore: Taxa that eat fishes.

Playa/Salt Flat: Level basins, floored with fine sediments, which periodically may contain a shallow lake. Some salt flats are rarely inundated.

Pool: Discrete areas where the water is relatively still and usually deeper than adjacent waters.

Poor Viability: Description of what qualifies as an occurrence with poor viability, taking into consideration all available knowledge, both historical and current, of the species at a particular location.

Population Viability Criteria Date: Date of the current version of these population/occurrence viability criteria (i.e., the date that these criteria were first completed, or since then, comprehensively revised).

Preserve Selection & Design Considerations: A description of the factors that should be considered when selecting and designing a preserve for an occurrence of this species. This includes landscape concerns, successional relations, bio-physical interactions, and management implications.

Reasons: See Global Status Reasons.

Related Concepts Relationship: Indicates whether the concept designated by the Related Concept Name is more, less, or equally inclusive of the concept (circumscription) of this Ecological Community or Ecological System. Values that define the relationship of the related concept to the Association or Ecological System are: B - Broader, F - Finer, I - Partly Intersects, = - Equivalent, and ? = Unknown.

Related Concept Name: Related concept names used by agencies or other classification systems to describe types that may be related to an Ecological Community or Ecological System. For more information see Classification of Ecological Communities.

Related Concept Reference: Citation of the reference for the concept identified by the Related Concept Name.

Related ITIS Names: Scientific name(s) and corresponding authority accepted or viewed as valid for the taxon by the Integrated Taxonomic Information System (ITIS). The ITIS unique identifier or Taxonomic Serial Number (TSN) for the name is listed after the name in parentheses.

Required Qualifiers: Indicates that the Ecological System contains cultivated types, non-vegetated types, upland types and/or wetland types.

Reproduction Comments: Comments on the reproduction of the species from a global perspective.

Restoration Potential: A description of the potential for restoration or recovery of the species from a state of degradation.

Riffle: Shallow area where water passing over the bottom causes visible disturbances (ripples) at the water surface.

Riparian: A narrow zone of habitats, which may or may not be vegetated, directly associated with streamsides or lake shores, or similar immediately adjacent habitat.

River Mouth/Tidal River: Lower reaches of rivers with both brackish water and tidal influence.

Riverine Habitat(s): Riverine habitat(s) where the element is found. Values include: big river, medium river, creek, spring/brook, high gradient, moderate gradient, low gradient, riffle, pool.

Rounded Global Status: This value uses an algorithm to evaluate Conservation Status Ranks and systematically produces easier to interpret values without qualifiers or ranges (e.g. G2G4 becomes G3, G4T1? becomes T1). For more information see NatureServe Conservation Status.