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Table 1: Threat Assessment Table.
Threat[*] Level of Concern[1] Extent Occurrence Frequency Severity[2] Causal Certainty[3]
Habitat Loss or Degradation
Land Development High Widespread Historic / Current Continuous High High
Double-crested Cormorant Nesting Colonies High Localized Current Seasonal High High
Disturbance or Harm
Cutting / Removal of Kentucky Coffee-trees High Widespread Historic / Current Continuous High High
Changes in Ecological Dynamics or Natural Processes
Alteration of the Water Regime (e.g., flood control) Medium Localized Unknown Continuous Moderate Medium
Alteration of the Fire Regime (e.g., fire suppression) Low / Medium Localized Current Continuous Moderate Medium
Exotic, Invasive, or Introduced Species/Genome
Planting of Non-native Kentucky Coffee-trees Medium Widespread Current Continuous Unknown Low
Terrestrial Invasive Plants (e.g., Dog-strangling Vine) Low / Medium Widespread Anticipated Continuous Unknown Low

1Level of Concern: signifies that managing the threat is of (high, medium or low) concern for the recovery of the species, consistent with the population and distribution objectives. This criterion considers the assessment of all the information in the table.
2Severity: reflects the population-level effect (High: very large population-level effect, Moderate, Low, Unknown).
3Causal certainty: reflects the degree of evidence that is known for the threat (High: available evidence strongly links the threat to stresses on population viability; Medium: there is a correlation between the threat and population viability e.g. expert opinion; Low: the threat is assumed or plausible).
*Threat categories are listed in approximate order of decreasing significance based on existing information and knowledge.

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Date Modified:
2014-08-08