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

@article{Hansen2013SpatialTI,
  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},
  year={2013},
  volume={160},
  pages={2929-2941}
}
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… 

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References

SHOWING 1-10 OF 35 REFERENCES

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

TLDR
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

TLDR
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

TLDR
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

TLDR
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

TLDR
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.