Reference Document 3-1
Appendix 3
Metric Response Cheat Sheet
1. CONSERVATION CONCERN
North Carolina Populations Metric Explanation
Response Options (a) 1 – 50 individuals (b) 50 - 250 individuals
5. NC Population Size
What is the estimated number of adults occurring in North Carolina?
(c) 250 - 1,000 individuals (d) 1,000 - 2,500 individuals (e) 2,500 - 10,000 individuals (f) 10,000 - 100,000 individuals (g) 100,000 - 1,000,000 individuals (h) >1,000,000 individuals
6. NC Range Size (by number of counties or river basins)
What is the estimated range size for the species in North Carolina?
(a) Terrestrial: 1 – 2 counties or –
Fish, Mussels, Crayfish: 1 river basin
(b) Terrestrial: 3 – 5 counties or –
Fish, Mussels, Crayfish: 2 river basins
• If a species has distinct breeding and non-breeding ranges in NC, use the smaller range to determine a score. • Assign scores based on the most restricted area (range) within NC over which the species is distributed (number
(c) Terrestrial: 6 – 10 counties or –
Fish, Mussels, Crayfish: 3 river basins
(d) Terrestrial: 11 – 25 counties or – Fish, Mussels, Crayfish: 4 to 6 river basins (e) Terrestrial: 26 – 50 counties or – Fish, Mussels, Crayfish: 7 to 10 river basins (f) Terrestrial: More than 50 counties (or statewide) or – Fish, Mussels, Crayfish: 11 or more river basins (a) Decline of >90% (b) Decline of 80 - 90% (c) Decline of 70 - 80% (d) Decline of 50 - 70% (e) Decline of 30 - 50% (f) Decline of 10 - 30% (g) Relatively Stable (≤ 10% increase or decrease) (h) Increasing (≥ 10% increase) (a) majority concentrate at single location or stream reach in NC (b) majority concentrates at 2 – 10 terrestrial locations or stream reaches in NC (c) majority concentrates at 11 – 25 terrestrial locations or stream reaches in NC (d) majority concentrates at > 25 terrestrial locations or stream reaches in NC (e) the species does not congregate or aggregate in NC
of counties or HUCs) or where it is expected to occur based on habitat availability.
7. NC Population Trend (short-term)
What is the estimated short-term distribution trend for the species in North Carolina? • Scores are assigned based on recent trends within the last 20 years that relate to the number of individuals throughout the species’ range in NC • Assign scores based on the most restricted area (range) within NC over which the species is distributed (number of counties or river basins) or where it is expected to occur based on habitat availability.
8. NC Population Concentration
Is the species known or suspected of concentrating (or aggregating) in North Carolina?
• Populations that are so rare they are restricted to small areas can be considered aggregations.
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2025 NC Wildlife Action Plan
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