[MARMAM] Common Dolphin NE Atlantic publication

Sinead Murphy Sinead.Murphy at ioz.ac.uk
Wed Sep 25 19:34:17 PDT 2013

Dear Colleagues,

The following paper was recently published.

Murphy, S., Pinn, E., and Jepson, P. 2013. The short-beaked common dolphin (Delphinus delphis) in the North-eastern Atlantic: distribution, ecology, management and conservation status. In: Hughes RN, Hughes DJ, Smith IP, eds. CRC Press. Oceanography and Marine Biology Vol 51: 193-280.

Abstract and table of contents are below.
A PDF is available at http://www.crcnetbase.com/doi/abs/10.1201/b15406-4

or PDF requests can be sent to Sinead.Murphy at ioz.ac.uk<mailto:Sinead.Murphy at ioz.ac.uk>

Kind Regards,
Sinéad Murphy

ABSTRACT: The common dolphin is the second most abundant cetacean species in the North-
East Atlantic, with a wide-ranging distribution and is, potentially, impacted by a wide variety of pressures and threats. To assess the conservation status of common dolphins in this region, it is essential to understand population structure, key drivers of population dynamics, key resources and the effects of stressors. In recent years, a number of studies have assessed population structure, distribution and abundance, life- History parameters, dietary requirements and the effect of stressors—especially those caused by anthropogenic interactions, such as incidental capture (i.e., by-catch) and pollutants. A full review of this work is presented, with particular focus on current and potential pressures and threats. Notwithstanding the recent research, due to the lack of baseline data (i.e., prior to human influence) on abundance and pregnancy rate and on historical direct and incidental capture rates, the actual conservation status of the North-East Atlantic common dolphin population is unknown. Current assessments of conservation status of the species are therefore reliant on recent data. However, these assessments are hindered by the lack of data on contemporary incidental capture rates in some fisheries and limited sampling in other fisheries, as well as large data gaps for other stressors. In addition, the numerous potential ways in which multiple and diverse stressors can interact remain poorly understood. This chapter provides an outline of a management framework and describes methods for future evaluation of conservation status through development of indicators focusing on not only population size and distribution but also mortality and condition. Recommendations for research and conservation actions are described.

Species Identification
         North-east Atlantic
Population structure in the North Atlantic
         North-east Atlantic population structure
         Ecological stocks
Distribution and abundance
         Contemporary seasonal movements
         Long-term distribution patterns
                North-Atlantic Oscillation
Population abundance
         Continental shelf waters
         Offshore waters
Life history parameters
         Size and morphology
         Population biological parameters
         Age and sex segregation
Feeding ecology
         Temporal, geographic and seasonal variations in diet
                Offshore waters
                Inshore waters
         Age and sex dietary requirements
Health status and causes of death

Stranding patterns

Mass mortality events

Infectious diseases

Non-infectious diseases

Reproductive failure and abnormalities of the reproductive tract
Threats and pressures
Overview of past and present threats
Fisheries interactions
       Operational effects
          Fisheries selectivity of age-sex maturity classes
Biological effects
Climate change
       Persistent organic pollutants
Heavy metals
Oil spills
Noise Pollution
Military activity
Seismic surveys
Aggregate extraction and dredging
Renewable energy
Other Impacts
       Collisions with vessels and shipping noise
       Whale watching and ecotourism
         International conventions
             United Nations Convention on the Law of the Sea
             Convention on Biological Diversity
             Convention on International Trade in Endangered Species of Wild Fauna and Flora
             The Bonn Convention (CMS) and the Agreement on the conservation of small cetaceans of the Baltic,                      North East Atlantic, Irish and North Seas (ASCOBANS)
             Convention on the Protection of the Marine Environment of the North-east Atlantic (OSPAR)
             The Bern Convention
             International Whaling Commission
                Directive of Natural Habitats and Wild Fauna and Flora (92/43/EEC)
                EC Council Regulation 812/2004 (‘the Fisheries Regulation’)
                Marine Strategy Framework Directive and Good Environmental Status
Management of the North-east Atlantic population
         Management units
         Population status
         Summary of main pressures and threats
         Management framework
                Management objectives
                Estimating bycatch limits
Conservation status
         Indicators in support of conservation status assessments
Recommended research
Recommended conservation actions

Dr Sinéad Murphy
Marie Curie Research Fellow

Institute of Zoology
Zoological Society of London
Regent's Park
London, UK
Email: Sinead.Murphy at ioz.ac.uk

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