Paul Ensor
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View article: Overview of the SOWER cruise circumpolar acoustic survey data and analyses of Antarctic blue whale calls
Overview of the SOWER cruise circumpolar acoustic survey data and analyses of Antarctic blue whale calls Open
The International Whaling Commission (IWC) carried out blue whale research within its annual Southern Ocean Whale and Ecosystem Research (SOWER) cruises between 1996 and 2010. Over 700 sonobuoys were deployed to record blue whale vocalisat…
View article: Photo‐identification and satellite telemetry connect southern right whales from South Georgia Island (Islas Georgias del Sur) with multiple feeding and calving grounds in the southwest Atlantic
Photo‐identification and satellite telemetry connect southern right whales from South Georgia Island (Islas Georgias del Sur) with multiple feeding and calving grounds in the southwest Atlantic Open
The sub‐Antarctic waters of South Georgia Island (Islas Georgias del Sur, SG/IG) are a regularly visited feeding ground for southern right whales ( Eubalaena australis , SRW) in the southwest Atlantic. Satellite telemetry and photo‐identif…
View article: Three forms of killer whales (Orcinus orca) in Antarctic waters
Three forms of killer whales (Orcinus orca) in Antarctic waters Open
This paper provides field descriptions and biological observations of three different forms of killer whale (Orcinus orca) that occur in Antarctica based on field observations and a review of available photographs. Identifications were bas…
View article: Overview of minke whale sightings surveys conducted on IWC/IDCR and SOWER Antarctic cruises from 1978/79 to 2000/01
Overview of minke whale sightings surveys conducted on IWC/IDCR and SOWER Antarctic cruises from 1978/79 to 2000/01 Open
The IWC Southern Hemisphere minke whale assessment cruises (IDCR and SOWER) have been conducted since 1978/79 in the Antarctic regions of all six IWC management Areas for baleen whales (covering all, or more recently, part, of one Area eac…
View article: The spectacled porpoise (Phocoena dioptrica) in Antarctic waters
The spectacled porpoise (Phocoena dioptrica) in Antarctic waters Open
Most knowledge on the biology and ecology of the spectacled porpoise (Phocoena dioptrica) has been obtained from stranded specimens, with less than fifteen confirmed sightings in the sea. Published photographs of live animals in their natu…
View article: Odontocetes of the Southern Ocean Sanctuary
Odontocetes of the Southern Ocean Sanctuary Open
Twenty-eight odontocete species were identified as occupying sub-Antarctic and Antarctic habitat covered by the 1994 IWC-established Southern Ocean Sanctuary. Toothed whales evidently play an important part in the Antarctic polar ecosystem…
View article: Observations of killer whales off East Antarctica, 82°-95°E, in 2009
Observations of killer whales off East Antarctica, 82°-95°E, in 2009 Open
Observations of killer whales (Orcinus orca) during a survey off East Antarctica, 82°–95°E revealed previously undescribed variations in pigmentation and group associations. During the survey 24 killer whale groups were sighted south of 60…
View article: Trackline detection probability of Antarctic minke whales: analyses of the BT mode experiments conducted on the IWC-SOWER cruises 2005/06–2007/08
Trackline detection probability of Antarctic minke whales: analyses of the BT mode experiments conducted on the IWC-SOWER cruises 2005/06–2007/08 Open
IWC sightings surveys to obtain abundance estimates of cetaceans have taken place in the Antarctic since 1978/79. In order to interpret the minke whale abundance from these surveys and trial different search protocols for future cruises, B…
View article: Modelling the effects of environmental conditions on the acoustic occurrence and behaviour of Antarctic blue whales
Modelling the effects of environmental conditions on the acoustic occurrence and behaviour of Antarctic blue whales Open
Harvested to perilously low numbers by commercial whaling during the past century, the large scale response of Antarctic blue whales Balaenoptera musculus intermedia to environmental variability is poorly understood. This study uses acoust…
View article: Re-Constructing Historical Adélie Penguin Abundance Estimates by Retrospectively Accounting for Detection Bias
Re-Constructing Historical Adélie Penguin Abundance Estimates by Retrospectively Accounting for Detection Bias Open
Seabirds and other land-breeding marine predators are considered to be useful and practical indicators of the state of marine ecosystems because of their dependence on marine prey and the accessibility of their populations at breeding colo…