Report on Southern Ocean seabird population trends

Subject: Report on Southern Ocean seabird population trends
From: Hugo Phillipps <>
Date: Tue, 19 Mar 2002 12:19:05 +1100
Hi evreybody -

Message from Eric Woehler below, forwarded by request.


           Statistical assessment of Southern Ocean seabirds

The report from the 1999 SCAR/NSF/CCAMLR Workshop that undertook a
statistical assessment of the status and trends of Antarctic and
Subantarctic seabirds was recently published.  The report is
available in both printed and electronic (PDF) form. The title,
authors and Abstract are provided below. If you would like to receive
a copy of the report, in either format, please contact:

Dr Eric Woehler, Chair SCAR Bird Biology Subcommittee
Australian Antarctic Division, Channel Highway, Kingston, Tasmania


A statistical assessment of the status and trends of Antarctic and
                            Subantarctic seabirds

Woehler EJ, Cooper J, Croxall JP, Fraser WR, Kooyman GL, Miller GD,
Nel DC, Patterson DL, Peter H-U, Ribic CA, Salwicka K, Trivelpiece WZ
& Weimerskirch H


A workshop held under the auspices of SCAR, CCAMLR & NSF in Montana
in May 1999 examined statistically all available long-term population
data for Southern Ocean seabirds. For the workshop, long-term was
defined as either: i) continuous for more than 10 years, or ii)
discontinuous for more than 10 years, but with more than 50%
coverage. A total of 61 long-term data sets for 25 taxa was examined.
Species and regional syntheses were undertaken where data permitted.
Significant decreases in populations are evident for those species
known to be caught on longline fisheries (albatrosses, Southern Giant
Petrels and Procellaria spp.).Substantial changes were noted for many
of the penguin populations examined, but these varied in terms of
degree and direction among species and geographical areas, so that no
completely consistent overall pattern emerged. However, decreases in
all penguins other than King Penguins in the Subantarctic was a
feature of the data. For some species of unfavourable conservation
status (BirdLife International 2000) very limited, if any, data are
available for assessment of population trends (eg Tristan Albatross
Diomedea dabbenena, White-chinned Petrel, Spectacled Petrel P.
conspicillata and Grey Petrel P. cinerea). Other species with notably
inadequate data include Light-mantled and Atlantic Yellow-nosed
Albatrosses. No time-series population data appear to exist for
Antarctic Petrels, a species that is endemic to the Antarctic
continent and adjacent waters. Other characteristic Antarctic species
for which there is little current population monitoring include Cape
and Snow Petrels and Southern Fulmar. Priorities for collateral data
to assist future assessments, for other analytical techniques and for
additional data are indicated.

Hugo Phillipps
Communications Coordinator
Birds Australia
415 Riversdale Road
HAWTHORN EAST 3123, Australia
Tel: (03) 9882 2622, fax: (03) 9882 2677
Email: <>
Web site: <>

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