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Working Group on Marine Mammal Eclogy (WGMME)
The Working Group on Marine Mammal Ecology met in 2021 to address new information on marine mammal ecology relevant to management. Two terms of references were standing ToRs; under the first of these, ToR A, new and updated information on seal and cetacean population abundance, population/stock structure, manage-ment frameworks as well as anthropogenic threats to individual health and population status were reviewed along with findings on threats to marine mammals such as bycatch, pollution, marine debris and noise. ToR B is a cooperation with WGBIODIV to review species-specific for-aging distributions (considering horizontal and vertical dimensions depending on data availa-bility) and to es...
Oceanography and Marine Biology
Oceanography and Marine Biology: An Annual Review remains one of the most cited sources in marine science and oceanography. The ever-increasing interest in work in oceanography and marine biology and its relevance to global environmental issues, especially global climate change and its impacts, creates a demand for authoritative refereed reviews summarising and synthesising the results of both historical and recent research. Six of the ten peer-reviewed contributions in Volume 62 are available to read Open Access via the webpage and on OAPEN. If you are interested in submitting a review for consideration for publication in OMBAR, please email the new co-Editors in Chief, Dr Peter Todd (dbspa...
Abundance and Distribution of Cetaceans
Harbour porpoise distribution shifted southward within the Greater North Sea. Abundance appears stable except for a decline in the Irish and Celtic Seas. Assessed populations of coastal bottlenose dolphin appear stable except for a decline in the Sado Estuary. Overall, more frequent large-scale surveys are needed for future quantitative assessment.
Seal Abundance and Distribution
Grey seal abundance is largely increasing across the assessed area. Within Arctic Waters, both Icelandic grey seals and harbour seals are declining. Harbour seals abundance trends are mixed within the Greater North Sea. Southern Celtic Seas data were limited, but trends are generally increasing. Distribution appears generally stable for both species.
Pilot Assessment of Status and Trends of Persistent Chemicals in Marine Mammals
Polychlorinated biphenyls (PCBs) are present in marine mammals living in all five OSPAR Regions. Toothed‐cetaceans and some subpopulations of pinnipeds present moderate to high ranges of PCB concentrations, often surpassing the estimated toxicity thresholds for the onset of reproductive incapacity. The ranges of PCB concentrations of baleen whales are always below the estimated toxicity thresholds.
Modeling Demographic Processes in Marked Populations
Here, biologists and statisticians come together in an interdisciplinary synthesis with the aim of developing new methods to overcome the most significant challenges and constraints faced by quantitative biologists seeking to model demographic rates.
L'écologie en mer des éléphants de mer austraux au travers des isotopes stables du carbone et de l'azote
Comment peut-on étudier des organismes aux moeurs cryptiques ? Quand l'observation directe d'animaux sauvages est compromise, des approches indirectes, comme celle des isotopes stables, qui visent à tracer le flux de molécules dans les chaînes alimentaires deviennent attractives. Ce travail de thèse s'est donc intéressé à l'utilisation des isotopes stables pour dévoiler l'écologie alimentaire d'un prédateur de l'océan austral : l'éléphant de mer (Mirounga leonina). Ce phoque passe moins d'un cinquième de sa vie à terre et dépend entièrement du milieu marin pour son alimentation. Prenant avantage de l'existence d'un gradient latitudinal naturel en isotopes stable du carbone,...
