Marty leonard cosewic process for prioritizing
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Transcript of Marty leonard cosewic process for prioritizing
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COSEWIC and Prioritizing Species for
Assessment
Marty L. Leonard, Chair
Committee on the Status of Endangered
Wildlife in Canada
(COSEWIC)
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Outline
Background
Criteria
Challenges
Consequences
Other considerations
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Section 15. (1) The functions of COSEWIC are to…
(b) determine when wildlife species are to be assessed, with
priority given to those more likely to become extinct
Background
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Background
2. High Risk versus Low Risk
1. Risk versus Not at Risk
Prioritization:
COSEWIC considers extinction and extirpation from Canada
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Background
Section 24. COSEWIC must review the classification of
each species at risk at least once every 10 years……
225 Reviews of Classification (2011-2015)
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COSEWIC
Aboriginal Traditional Knowledge
Amphibians and Reptiles
Arthropods
Birds
Freshwater Fishes
Marine Fishes Marine
Mammals
Molluscs
Mosses and Lichens
Terrestrial Mammals
Vascular Plants
Ranks across taxa
Selects top 15 species for assessment
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Criteria
ii. Extent of occurrence (EO) or area of occupancy (AO)
Risk:
i. Population size and trends
- small EO/AO and/or all individuals in few populations
- small populations and/or severe declines
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Criteria
v. Global conservation status - species at risk globally
iii. Limiting biological factors
- e.g. life history traits, specialized habitat
iv. Threats
- severe threats, affecting large percent of
population
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Criteria
vi. Portion of global range/population in Canada
- endemics, significant proportion in Canada
Responsibility:
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Criteria
vii. Taxonomic level
Taxonomic Distinctiveness:
- more taxonomically distinct
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Challenges
Ranking across taxa
Uncertainty
Capacity
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Trend information by taxon
0
1
2
3
4
Mar
ine
Fish
Birds
Mar
ine
Mam
mal
s
Fresh
wat
er F
ish
Lichen
s
Arthro
pods
Mollu
scs
Vascu
lar Pla
nts
Moss
es
Am
phibia
ns
Rep
tiles
Inform
aonRan
k
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Consequences
Status recommendation
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Number of Wildlife Species by Category
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Consequences
Responsibility
- peripheral species
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Other considerations
Conservation action
All else equal in terms of risk:
Proportion of range/pop in Canada
Search effort
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Acknowledgements
Karen Timm
David Fraser
Simon Nadeau
Justina Ray
COSEWIC
Committee on the Status of
Endangered Wildlife in Canada
COSEPAC
Comité sur la situation des
espèces en péril au Canada