Spatial trends in abundance of long-finned pilot whales, white-beaked dolphins and harbour porpoises in West Greenland

  title={Spatial trends in abundance of long-finned pilot whales, white-beaked dolphins and harbour porpoises in West Greenland},
  author={Rikke G Hansen and Mads Peter Heide‐J{\o}rgensen},
  journal={Marine Biology},
Data from an aerial line transect survey conducted off West Greenland during August–September 2007 were used to estimate the abundance of long-finned pilot whales (Globicephala melas), white-beaked dolphins (Lagenorhynchus albirostris) and harbour porpoises (Phocoena phocoena). The abundance of each species was estimated using mark-recapture distance sampling techniques to correct for perception bias, and correction factors for time spent at the surface were applied. The fully corrected… 

Abundance of Whales in West and East Greenland in Summer 2015

The decline in baleen whale and white-beaked dolphin abundance is likely due to emigration to the East Greenland shelf areas where recent climate driven changes in pelagic productivity may have accelerated favourable conditions for these species.

Estimates of the abundance of cetaceans in the central North Atlantic based on the NASS Icelandic and Faroese shipboard surveys conducted in 2015

The North Atlantic Sightings Survey (NASS), the sixth in a series of surveys conducted between 1987 and 2015, was conducted in June/July 2015 and covered a large area of the northern North Atlantic.

Oceanic movements, site fidelity and deep diving in harbour porpoises from Greenland show limited similarities to animals from the North Sea

It is documents that harbour porpoises use oceanic habitats and can dive to depths that enable mesopelagic foraging, while repeatedly demonstrating summer site fidelity to coastal areas.

Rare sightings of white-beaked dolphins ( Lagenorhynchus albirostris ) off south-eastern Baffin Island, Canada

We report two opportunistic and unusual observations of white-beaked dolphins (Lagenorhynchus albirostris) in the Canadian Arctic that are outside the known range of this species. Sightings occurred

Indications of mesopelagic foraging by a small odontocete

It is hypothesised that the Greenlandic harbour porpoise is seasonally dependent on mesopelagic prey when abandoning the ice-covered continental shelf areas and remains in offshore areas, and probably target vertically migrating species from the mesopalagic layer at shallower depths at night and at lower energetic cost than during the day.

Out of Sight, Out of Mind: How Conservation Is Failing European Porpoises

The conservation of harbor porpoises (Phocoena phocoena) appears to be failing in Europe. There are particular concerns about this species in the Baltic Proper, Black, and Mediterranean Seas, as well

Impacts of climate change on marine mammals, relevant to the coastal and marine environment around the UK

• The main observed effects of climate change on marine mammals globally have been geographical range shifts and loss of habitat through ice cover loss, changes to the food web, increased exposure to

Lagenorhynchus albirostris (Cetacea: Delphinidae)

A robustly built dolphin with black, white, and gray coloration, L. albirostris has a whitish beak, a prominent dorsal fin, and a white saddle behind the fin.

Estimates of Cetacean Abundance in the North Atlantic of Relevance to NAMMCO

  • G. Desportes
  • Environmental Science
    NAMMCO Scientific Publications
  • 2020
The best available abundance estimates for cetacean species in areas of relevance to the work of NAMMCO since 1986 are presented and the references to the original sources is provided.



Spatial and temporal trends in the distribution of harbour porpoises, white-beaked dolphins and minke whales off Aberdeenshire (UK), north-western North Sea

The strong seasonality in occurrence of all three cetacean species may relate to requirements for breeding habitat, movements of shared prey species and/or inter-specific competition with other species.

Seasonal distribution of white-beaked dolphins (Lagenorhynchus albirostris) in UK waters with new information on diet and habitat use

Details of the seasonal and geographical distribution of white-beaked dolphins around the UK are presented, along with new information on their diet and habitat use, and analysis of historical stranding records shows a segregation of the sexes.

Predictions of critical habitat for five whale species in the waters of coastal British Columbia

Whaling records from British Columbia coastal whaling stations reliably report the positions of 9592 whales killed between 1948 and 1967. We used this positional information and oceanographic data

Distribution and abundance of long-finned pilot whales in the North Atlantic, estimated from NASS-87 and NASS-89 data

During the summers of 1987 and 1989, large scale transect surveys were conducted throughout the North Atlantic by several national agencies in Denmark (off Greenland), Faroe Islands, Iceland, Norway

Spatial associations between large baleen whales and their prey in West Greenland

Standard regression models indicated the most important parameter in predicting large baleen whale presence was integrated krill abundance, although this relationship was only significant for sightings obtained on the ship survey, suggesting that a high degree of spatio-temporal synchrony in observations is necessary for quantifying predator-prey relationships.

Life in the lead: extreme densities of narwhals Monodon monoceros in the offshore pack ice.

There is a paucity of information on abundance, densities, and habitat selection of nar- whals Monodon monoceros in the offshore pack ice of Baffin Bay, West Greenland, despite the criti- cal

Model-based abundance estimates for bottlenose dolphins off southern Spain: implications for conservation and management

An EU-funded Life project was initiated off southern Spain in 2002, with the objective of developing a Conservation Plan for bottlenose dolphins in the area. Baseline information and monitoring of

Feeding ecology of long-finned pilot whales Globicephala melas in the western North Atlantic

The divers~ty of prey in this study was greater than previous reports of the food hablts of western North Atlantic long-finned pilot whales, and large yearly fluctuat~ons in prey importance were noted.

Diving behaviour of long-finned pilot whales Globicephala melas around the Faroe Islands

Three long-finned pilot whales Globicephala melas were equipped with satellite-linked time-depth recorders on the Faroe Islands on 15 July 2000. The purpose was to study the diving behaviour and

Status of the harbour porpoise in Greenland

No estimates on stock size are available, and a monitoring programme is needed if the impact of the catch is to be evaluated, and there are no indications that environmental issues such as organochlorines, heavy metals, oil or noise have constituted any threat to harbour porpoises in Greenland.