Population information

Order name Anseriformes
Family name Anatidae
Scientific name Mergus octosetaceus Common name Brazilian Merganser
Population name C South America
Breeding range S & C Brazil, NE Argentina & E Paraguay Non-breeding range
Red List Category Critically Endangered
Ramsar regions Neotropics
Notes

Conservation Framework

Conservation framework Notes
No conservation frameworks
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 1 0 0 1 250 [R57]
WPE 3 1999 1999 50 250 [R68]
WPE 4 2005 2005 50 250 [S5750] [R64]
WPE 2 0 0 1 250 [R324]
WPE 5 1992 1992 50 250 Expert opinion [R1024]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 0 0 Unknown
WPE 3 1988 1998 DEC [R68]
WPE 4 1994 2004 DEC [R64]
WPE 2 0 0 Unknown
WPE 5 2001 2010 DEC Reasonable [R64]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 1994 3
WPE 3 2002 2
WPE 4 2006 2
WPE 2 1997 3
WPE 5 2012 1

References

  • R57 - Benstead P. 1994. Brazilian Mergansers in Argentina: going, going ? Neotropical News. Cotinga 1: 8.
  • R68 - BirdLife International. (2000). Threatened Birds of the World. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife international
  • R64 - BirdLife International. 2005. Threatened birds of the world 2005. Species factsheets available at?www.birdlife.org
  • R324 - Hughes, B. (pers. comm.). Unpublished data for Brazilian Mergansers Mergus octosetaceus.
  • R1024 - BirdLife International. 2012j. IUCN Red List for birds (downloaded from http://www.birdlife.org)
  • R1544 - LĂ­via Lins, in litt. 26 march 2015.

Notes

  • S5750 - 633: Found at several new localities in central Brazil in 2002.



Copyright Wetlands International 2012

Citation: Wetlands International (). "Waterbird Population Estimates" . Retrieved from wpe.wetlands.org on