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

Asian Dowitcher

Species 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)

Limnodromus semipalmatus

Scolopacidae

Population type  

Population visiting Australia

IUCN Red List Status 2010  

Near Threatened A3c+4c, C2a(ii), D1

Environmental Protection and Biodiversity Conservation Act Status  

Not listed

Reason if Threatened or Near Threatened  

Small Australian population unlikely to exceed 1,000 nature individuals, possibly declining along with global population which is Near Threatened based on habitat loss. As species is not threatened in Australia, Australian status downgraded to global status

IUCN Red List Status 2000  

Near Threatened D1

Reason if changed in 2010  

Accelerated habitat loss at staging posts

IUCN Red List Status 1990  

Near Threatened D1

Reason if changed in 2000  

No change

Current Eligibility against IUCN Red List Criteria  

.

IUCN Category

Criteria Eligibility

A

Near Threatened - current and anticipated population declines 20-29% over the last 3 generations (17 years) inferred from deteriorating habitat quality

B

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

C

Endangered - population 250-2,500 mature individuals, suspected continuing decline, greater than 95% mature individuals in 1 subpopulation (downgraded to Near Threatened)

D

Vulnerable - population 250-1,000 mature individuals (downgraded to Near Threatened)

E

Not applicable - no population viability analysis undertaken

IUCN Red List Assessment Data  

.

Parameter  

Estimate

Reliability

Extent of Occurrence   

14,000 km²

medium

trend  

stable

medium

Area of Occupancy  

1,400 km²

low

trend  

stable

medium

Number of Mature Individuals  

500

low

trend  

decreasing

high

Number of sub-populations  

1

high

Number of locations  

10

high

Largest sub-population  

500

low

Generation time  

5.8 years

high

Global population share  

1-10%

high

Level of genetic exchange  

nil

high


Project Partners

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

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