Are the ‘resident’ dolphins of Doubtful Sound becoming less resident?

An Analysis of Resident and Non- Resident Air Passenger Behaviour of Origin Airport Choice

Increasing number of air travellers in recent years and the emergence of multi-airport cities throughout the world has made the behaviour of travellers regarding the choice of the origin airport even more important. Analysis of this behaviour helps for a better future planning and development of competing airports as an important element of their demand prediction. In this paper, particular emp...

Monitoring underwater explosions in the habitat of resident bottlenose dolphins.

Maintenance work on the harbor of Setúbal, in Portugal, required the removal of a 14-m deep rocky outcrop at the ship maneuver area, using about 35 kg of Gelamonite, a nitroglycerin-based high-explosive. This important harbor is located in the Sado estuary, a biologically rich environment and an important feeding area for a resident community of bottlenose dolphins. Using different safe range c...

Are we becoming less disposable?

Time and again we see not only does our mean life expectancy keep increasing (Fig 1), but also that this linear increase means that all predictions of our maximum life expectancy so far have turned out to be gross underestimates (Oeppen & Vaupel, 2002). Today, citizens in developed countries can easily expect to live beyond the age of 75 years—81 for women—but if we take Fig 1 as an indication,...

Why do dolphins jump? Interpreting the behavioural repertoire of bottlenose dolphins (Tursiops sp.) in Doubtful Sound, New Zealand.

Only a limited number of studies have tried to determine the purpose of surface behavioural events performed by dolphins. To date only one study has attempted to aggregate the behavioural events observed in a population in contextual groups using co-occurrence as the grouping factor. In the present study, I tried to characterise the behavioural repertoire of a bottlenose dolphin population (Tur...

Resident duty hour restrictions: is less really more?