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Justification (Population Occurrence Viability Criteria):
Basis for the criteria used as a basis for designating occurrence viability as excellent, good, fair, or poor, including citations if available.
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Kingdom:
Taxonomic Kingdom
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Known
Pests:
Scientific names of other species (especially non-natives)
where a clear detrimental impact on this species is documented.
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| KS:
Abbreviation for the state of Kansas (United States). |
| KY:
Abbreviation for the state of Kentucky (United States). |
| LA:
Abbreviation for the state of Lousiana (United States). |
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Lacustrine
Habitat(s):
Value(s) that indicate(s) the lacustrine habitat(s) that contribute significantly to the survival or reproduction of the Element. Values include: deep water, shallow water, aerial.
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Lagoon:
Open (unvegetated), shallow, estuarine waters isolated at low tide or separated from deeper waters by a natural barrier such as a spit or barrier island.
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Land Cover Class: The National Land Cover Data (NLCD) managed by the USGS Biological Resources Division. In the NLCD classification, the \"Forest\" class is a combination of the \"Forest\" and \"Woodland\" Formation Classes in the National Vegetation Classification (NVC). Similarly, the NLCD \"Shrubland\" class encompasses the \"Shrubland\" and \"Dwarf-shrubland\" Formation Class of the NVC, and NLCD \"Grasslands/Herbaceous\" matches the \"Herbaceous\" Formation Class of the NVC. The NLCD \"Woody Herbaceous\" class includes upland NVC Formation Groups of \"Temperate or subpolar grassland with a sparse tree layer\" and \"Temperate and subpolar grassland with a sparse shrub layer.\" This class is not comprehensively mapped in the NLCD. NLCD \"Woody Wetlands\" encompasses some 80 wetland and saturated Forest, Woodland, and Shrubland Formations of the NVC. Some 43 wetland and saturated Herbaceous NVC Formations make up the \"Emergent/ Herbaceous Wetland\" class of NLCD. The NLCD \"Bare Rock\" class closely matches the NVC Sparse Vegetation Formation Class, but could also include areas classified in the Nonvascular Formation class of the NVC. OR 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.
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| Large Patch:Ecological Systems that form large areas of interrupted cover and typically have narrower ranges of ecological tolerances than matrix types. Individual disturbance events tend to occupy patches that can encompass a large proportion of the overall occurrence (e.g. >20%). Given common disturbance dynamics, these types may tend to shift somewhat in location within large landscapes over time spans of several hundred years. In undisturbed conditions, typical occurrences range from 50-2,000 ha. |
| LB:
Abbreviation for Labrador, which makes up part of the province
of Newfoundland and Labrador (Canada). |
| Length:
For animals only: Approximate typical total length of an adult, in centimeters. Carapace length used for turtles and snout to vent length for anurans (frogs and toads). |
Lifeform (Floristic Composition)
The lifeform of the designated component species in the designated stratum of the ecological community.
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Lifeform (Vegetation Structure)
The lifeform(s) present within each layer of vegetation (identified in the associated Stratum column) in the community.
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| Linear:Ecological systems that occur as linear strips and are often ecotonal between terrestrial and aquatic ecosystems. In undisturbed conditions, typical occurrences range in linear distance from 0.5 to 100 km. |
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Locally
Migrant: Data provided in species reports. Indicates this species makes local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).
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Long
Distance Migrant:
Data provided in species reports. Indicates populations make annual migrations of over 200 km.
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Low
Gradient:
Streams with a fall less than 0.2 meters per kilometer; there may be sand bars, but the sediments are mostly silt.
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