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Rougheye and blackspotted rockfish complex and longspine thorny management plan 2012: appendix 1

Appendix I: Threat Attributes and Assessment Glossary

Threat Attributes and Assessment Glossary
Terms Rating Definitions
Threat categorytable notea n/a

Broad category identifying the type of threat:

  1. Habitat loss or degradation
  2. Exotic, invasive or introduced species/genome
  3. Changes in ecological dynamic or natural processes
  4. Pollution
  5. Accidental mortality
  6. Biological resource use
  7. Disturbance or harm
  8. Climate and natural disasters
  9. Natural processes or activities
General threat n/a General activity causing the specific threat
Specific threat n/a Specific factor or stimulus causing stress to the population
Stress n/a Indicated by harm to an individual or a population, in response to a threat that results in a reduction of species viabilitytable noteb
Extent Widespread Across the entire species range
Extent Localized Across a specific portion of the species range
Extent Unknown Available information is insufficient to gauge the extent of the threat
Local n/a Threat information relates to a specific site or narrow portion of the species range
Range-wide n/a Threat information relates to the entire or large portion of the species range
Occurrence Historical Contributed to decline but no longer affecting the species
Occurrence Current Affecting the species now
Occurrence Imminent Is expected to affect the species very soon
Occurrence Anticipated May affect the species in the future
Occurrence Unknown Available information is insufficient to gauge the occurrence of the threat
Frequency One-time Occurring only once
Frequency Seasonal Occurs at only certain times of the year (could be due to migratory nature of the species)
Frequency Continuous On-going
Frequency Recurrent Reoccurs from time to time but not on an annual or seasonal basis
Frequency Unknown Available information is insufficient to gauge the frequency of the threat
Severity High Has a very large population-level effect
Severity Medium Has a moderate population-level effect
Severity Low Has a small population-level effect
Severity Unknown Available information is insufficient to gauge the degree to which the threat may affect population viabilitytable noteb
Causal certainty High Evidence causally links the threat to stresses on population viabilitytable noteb
Causal certainty Medium Correlation between the threat and population viabilitytable noteb
Causal certainty Low Assumed or plausible threat only
Level of concerntable note c High High degree of concern for conservation of the species
Level of concerntable note c Medium Moderate degree of concern for conservation of the species
Level of concerntable note c Low Low concern of concern for conservation of the species

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