Browsing Atlantic Technological University (Galway-Mayo) by Author "O'Brien, Joanne"
Now showing items 1-16 of 16
-
Acoustic Monitoring of a Bottlenose Dolphin (Tursiops truncatus) Population: Trends in Presence and Foraging beyond the Limits of the Lower River Shannon SAC
Charish, Rachel; Berrow, Simon; O'Brien, Joanne (MDPI Journals, 2021-06-12)The Shannon dolphins are a population of bottlenose dolphins resident year round within the Lower River Shannon SAC, Ireland, which has been designated to protect this relatively small, genetically discrete population. ... -
Assessment and monitoring of ocean noise in Irish waters
Beck, Suzanne; O'Connor, Ian; Berrow, Simon; O'Brien, Joanne (Environmental Protection Agency, 2013)This desk study was aimed to help Ireland meet the requirements of the Marine Strategy Framework Directive (MSFD) (2008/56/EC) under Descriptor 11: The introduction of energy, including underwater noise, is at levels that ... -
Assessment and monitoring of ocean noise in Irish waters
Beck, Suzanne; O'Brien, Joanne; O’Connor, Ian; Berrow, Simon (Environmental Protection Agency, 2012)Anthropogenic noise is now recognised as a significant pollutant in the marine environment and there is a growing interest from the scientific community, policy makers and the general public in the effects of anthropogenic ... -
Assessment of impulsive and continuous low- frequency noise in Irish waters
Beck, Suzanne; O'Brien, Joanne; O’Connor, Ian; Berrow, Simon; Wall, Dave (Springer-Verlag, 2016)As part of the European Union Marine Strategy Framework Directive (MSFD), member states are required to address noise pollution in the marine environment under Descriptor 11. This study aimed to provide a practical desk-based ... -
Bottlenose dolphin (Tursiops truncatus) social structure in the Shannon Estuary, Ireland, is distinguished by age- and area-related associations
Baker, Isabel; O'Brien, Joanne; McHugh, Katherine; Ingram, Simon N.; Berrow, Simon (Society for Marine Mammalogy, 2018)Social and network analyses that incorporate information on individuals within a population enhance our knowledge of complex species. In this study, the social structure of wild bottlenose dolphins in the Shannon Estuary, ... -
Discrete or not so discrete: Long distance movements by coastal bottlenose dolphins in UK and Irish waters
Robinson, Kevin P.; O'Brien, Joanne; Berrow, Simon; Cheney, Barbara; Costa, Marina; Elsfield, Sonja M.; Haberlin, Damien; Mandleberg, Laura; O'donovan, Mairead; Oudejans, Machiel G.; O'Connor, Ian; Stevick, Peter T.; Thompson, Paul M.; Whooley, Padraig (2012)The potential for long distance movements in common bottlenose dolphins (Tursiops truncatus) from six UK and Irish study sites was examined using photographs of natural markings. Here we provide the first evidence for ... -
An Ethogram for Bottlenose Dolphins (Tursiops truncatus) in the Shannon Estuary, Ireland
Baker, Isabel; O'Brien, Joanne; McHugh, Katherine; Berrow, Simon (2017)Ethograms, or categorized lists of behavioral descriptors, are fundamental research tools in the study of animal behavior and are essential to the overall understanding of the behavioral ecology of a species. With specific ... -
Female reproductive parameters and population demographics of bottlenose dolphins (Tursiops truncatus) in the Shannon Estuary, Ireland
Baker, Isabel; O'Brien, Joanne; McHugh, Katherine; Berrow, Simon (Springer Nature, 2017-11-20)This study investigates the female reproductive parameters and population demographics of bottlenose dolphins (Tursiops truncatus) in the Shannon Estuary, Ireland, using long-term relational sightings and photographic ... -
Fine-scale sociality reveals female–male affiliations and absence of male alliances in bottlenose dolphins (Tursiops truncatus) in the Shannon Estuary, Ireland
Baker, Isabel; O'Brien, Joanne; McHugh, Katherine; Berrow, Simon (Society for Marine Mammalogy, 2019-04-29)Knowledge of social behavior at an individual level is central to our understanding of complex mammalian societies. In this study, we analyzed the fine-scale sociality of wild bottlenose dolphins in the Shannon Estuary, ... -
A first acoustic density estimate for sperm whales in Irish offshore waters
Gordon, Jonathan; Gillespie, Douglas; Leaper, Russel; Lee, Arthur; Porter, Lindsay; O'Brien, Joanne; Meade, Rossa; Ó Cadhla, Oliver; Berrow, Simon (International Whaling Commission, 2020)Previous studies off western Ireland have suggested that substantial numbers of, mainly male, sperm whales may be found in these habitats. Whaling vessels operating from shore stations in Ireland in the early 20th century ... -
High concentrations of persistent organic pollutants in adult killer whales (Orcinus orca) and a foetus stranded in Ireland
Schlingermann, Moira; Berrow, Simon; Craig, Darren; McHugh, Brendan; Marrinan, Michael; O'Brien, Joanne; O'Connor, Ian; Ryan, Conor; Mudzatsi, Engelbert; White, Philip (Elsevier Ltd., 2019-10-29)Bio-accumulation of persistent organic pollutants including polychlorinatedbiphenyls (PCBs), brominated flame retardants and organochlorine pesticides continue to be of major concern for marine apex predators such as killer ... -
A note on long-distance matches of bottlenose dolphins (tursiops truncatus) around the Irish coast using photo-identification
O'Brien, Joanne; Berrow, Simon; Ryan, Conor; McGrath, David; O'Connor, Ian; Giovanna, Pesante; Burrows, Gary; Massett, Nick; Klotzer, Vanessa; Whooley, Padraig (International Whaling Commission, 2009-01)Images of 120 individual bottlenose dolphins from around the Irish coast were obtained from three photo-identification catalogues. Twenty three individuals were subsequently re-sighted, which is a re-sighting rate of 19%. ... -
Oceanographic Drivers of Cuvier's (Ziphius cavirostris) and Sowerby's (Mesoplodon bidens) Beaked Whales Acoustic Occurrence along the Irish Shelf Edge
Barile, Cynthia; Berrow, Simon; O'Brien, Joanne (MDPI Journals, 2021-10-02)Cuvier’s and Sowerby’s beaked whales occur year-round in western Irish waters, yet remain some of the most poorly understood cetaceans in the area. Considering the importance of the area for anthropogenic activities and ... -
Selection on ancestral genetic variation fuels repeated ecotype formation in bottlenose dolphins
Louis, Marie; Galimberti, Marco; Archer, Frederick; Berrow, Simon; Brownlow, Andrew; Fallon, Ramon; Nykänen, Milaja; O'Brien, Joanne; Robertson, Kelly M.; Rosel, Patricia E.; Simon-Bouhet, Benoit; Wegmann, Daniel; Fontaine, Michael C.; Foote, Andrew D.; Gaggiotti, Oscar E. (American Association for the Advancement of Science, 2021-10-27)Studying repeated adaptation can provide insights into the mechanisms allowing species to adapt to novel environments. Here, we investigate repeated evolution driven by habitat specialization in the common bottlenose ... -
Short note: the first confirmed successful refloat of a stranded bottlenose dolphin (Tursiops truncatus) in Ireland and subsequent resighting with a neonate
O'Brien, Joanne; Baker, Isabel; Barker, Joanna; Berrow, Simon; Ryan, Conor; O’Connell, Mick; O’Donoghue, Barry (2014-05)The article presents a study which discusses the refloating of bottlenose dolphins (Tursiops truncatus) and the subsequent resighting with a neonate in Ireland. Topics include the live-stranding events of a bottlenose ... -
The use of deep water berths and the effect of noise on bottlenose dolphins in the Shannon Estuary cSAC
O'Brien, Joanne; Beck, Suzanne; Berrow, Simon; André, Michel; van der Schaar, Mike; O'Connor, Ian; McKeown, Eugene P. (2016)The Shannon Estuary on the west coast of Ireland is one of Europe’s premier deepwater berths catering for ships up to 200,000 deadweight tonnage. It is also Ireland’s only designated candidate special area of conservation ...