Using this page

 

Glossary of Terms

 

 

IUCN:  International Union for the Conservation of Nature

 

EPBC: Environmental Protection and Biodiversity Conservation Act 1999

 

AOO - Area of Occurence: the geographical areas in which a species is normally found.

 

EOO - Extent of Occurence

 

 

 

Images

 

Click on images and maps to see larger versions - once revealed click on screen away from image to return to original view.

Key to maps

reddot.png(red dots) core records, known to represent existing locations of focal taxa; in the case of intra-continental migrants, only records approximating the taxon’s breeding distribution are used.

orangedot(orange dots) non-core records, representing vagrant occurrences of the focal taxon obviously outside its usual range, or historical observations of a taxon known to be extinct at that location.

greydot(grey dots) records of other subspecies of the same species as the focal taxon; or in the case of intra-continental migrants, non-breeding records of the focal taxon not included as core records.

blueploy(blue polygons) minimum convex polygons underlying the locational records on the maps that depict each existing taxon’s Extent of Occurrence (EOO).

yellowpoly

(yellow polygons) areas formerly occupied by Extinct taxa.

 

redarrow(red arrows) the location of taxa with very small distributionsand known seabird breeding locations.

Maps were made using the Geoscience Australia Lambert Conformal Conic (GALCC) projection.

 

     

Taxa data image

Grey Petrel

Species Conservation Summary

Image  

Image required click here to contribute.

Map of distribution  
Grey Petrel

Image to copyright Glenn Emke, Birds Australia

click image to enlarge

Download data (.csv file)

Procellaria cinerea

Procellariidae

Population type  

Australian breeding population

IUCN Red List Status 2010  

Endangered B3ab(iii)

Environmental Protection and Biodiversity Conservation Act Status  

Not listed

Reason if Threatened or Near Threatened  

Population occurs at single location where habitat quality declining area occupancy probably contracting due to grazing by rabbits and subsequent predation. May be Critically Endangered but some evidence of genetic exchange with extralimital non-threatened population so downlisted one level

IUCN Red List Status 2000  

Endangered D

Reason if changed in 2010  

No change

IUCN Red List Status 1990  

Endangered D

Reason if changed in 2000  

No change

Current Eligibility against IUCN Red List Criteria  

.

IUCN Category

Criteria Eligibility

A

Not applicable - population up and down within one generation, so no trend

B

Critically Endangered - AOO less than 10 km², 1 location with plausible future threat, inferred continuing decline in AOO, habitat quality (but downgraded to Endangered as global status Near Threatened)

C

Not applicable - although population less than 250 mature individuals, 100% in one subpopulation, population up and down within one generation so no continuing decline in population size

D

Vulnerable - population 250-1,000 mature individuals, no more than 5 locations with plausible future threat

E

Not applicable - no population viability analysis undertaken

IUCN Red List Assessment Data  

.

Parameter  

Estimate

Reliability

Extent of Occurrence  

2,200,000 km²

high

trend  

stable

high

Area of Occupancy  

2 km²

high

trend  

decreasing

medium

Number of Mature Individuals  

140

high

trend  

decreasing

high

Number of sub-populations  

1

high

Number of locations  

1

high

Largest sub-population  

140

high

Generation time  

25.2 years

medium

Global population share  

less than 1%

high

Level of genetic exchange  

high

medium

Population type  

Population visiting Australia

IUCN Red List Status 2010  

Near Threatened A2cde+3cde+4cde

Reason if Threatened or Near Threatened  

Recent and ongoing declines approaching 30% in 3 generations (75 years)

IUCN Red List Status 2000  

Near Threatened A2cde+3cde+4cde

Reason if changed in 2010  

No change

IUCN Red List Status 1990  

Near Threatened A2cde+3cde+4cde

Reason if changed in 2000  

No change

Current Eligibility against IUCN Red List Criteria  

.

IUCN Category

Criteria Eligibility

A

Near Threatened - past, current and anticipated population declines 20-29% over periods 3 generations (75 years) inferred from deteriorating habitat quality, levels exploitation and effects of introduced taxa

B

Not applicable - greater than 10 locations, not severely fragmented, population fluctuations not extreme

C

Not applicable - population greater than 10,000 mature individuals

D

Not applicable - population greater than 1,000 mature individuals, greater than 5 locations

E

Not applicable - no population viability analysis undertaken

IUCN Red List Assessment Data  

.

Parameter  

Estimate

Reliability

Extent of Occurrence  

2,200,000 km²

high

trend  

stable

high

Area of Occupancy  

2,200,000 km²

high

trend  

stable

high

Number of Mature Individuals  

400,000

medium

trend  

decreasing

high

Number of sub-populations  

3

high

Number of locations  

10

high

Largest sub-population  

106,000

medium

Generation time  

25.2 years

medium

Global population share  

26-50%

high


Project Partners

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