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

Fairy Tern (New Caledonian)

Subspecies Conservation Summary

Image  

Image required click here to contribute.

Map of Distribution  

Image copyright to Glenn Ehmke, Birds Australia

click image to enlarge

Download data (.csv file)

Sternula nereis exsul

Laridae

Population type  

Australian breeding population

IUCN Red List Status 2010  

Endangered D

Environmental Protection and Biodiversity Conservation Act Status  

Not listed

Reason if Threatened or Near Threatened  

Australian population less than 50 mature individuals. Probably not isolated from global population based in New Caledonia so downgraded, even though that population too is Endangered

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 - past, current or future population declines are thought unlikely to exceed 20% in any 3 generation period

B

Not applicable - EOO, AOO, habitat, locations or population not declining, population fluctuations not extreme

C

Not applicable - no continuing population decline or extreme fluctuations

D

Critically Endangered - population less than 50 mature individuals (downgraded to Endangered)

E

Not applicable - no population viability analysis undertaken

IUCN Red List Assessment Data  

.

Parameter  

Estimate

Reliability

Extent of Occurrence   

280,000 km²

low

trend  

stable

medium

Area of Occupancy  

1 km²

high

trend  

stable

medium

Number of Mature Individuals  

4

medium

trend  

stable

low

Number of sub-populations  

1

high

Number of locations  

1

high

Largest sub-population  

4

medium

Generation time  

11.0 years

medium

Global population share  

1-10%

low

Level of genetic exchange  

high

medium


Project Partners

CDU Logo University of Queensland Bird Life International Australian Wildlife Conservancy Biosis Research  

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