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Limited By:	Author = Berrow, S.D.;

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Marine Mammals and Megafauna in Irish Waters - Behaviour, Distribution and Habitat Use- Final Summary Report. (2013)

Berrow, S.D.; O’Brien, J.; O’Connor, I.; McGrath, D.; Wall, D.

Marine Mammals and Megafauna in Irish Waters - Behaviour, Distribution and Habitat Use- Final Summary Report. (2013)

Berrow, S.D.; O’Brien, J.; O’Connor, I.; McGrath, D.; Wall, D.

Abstract:

Irish waters are internationally important for cetaceans (whales, dolphins and porpoises), with 24 species recorded to date. These range from the harbour porpoise, the smallest species in European waters, to the blue whale, the largest animal to ever have lived on Earth. All cetaceans and their habitats are protected under Irish and international law. The research termed Marine Mammals and Megafauna in Irish Waters – behaviour, distribution and habitat use was delivered under six Work Packages. The deliverables under this project will provide data which could be used to address a wide range of issues, and will contribute to developing policy advice on meeting Ireland’s statutory obligations.

http://hdl.handle.net/10793/873

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Marine Mammals and Megafauna in Irish Waters - Behaviour, Distribution and Habitat Use- WP3 Biotelemetry of Marine Megafauna in Irish Waters (2013)

Berrow, S.D.; O’Connor, I.

Marine Mammals and Megafauna in Irish Waters - Behaviour, Distribution and Habitat Use- WP3 Biotelemetry of Marine Megafauna in Irish Waters (2013)

Berrow, S.D.; O’Connor, I.

Abstract:

Biotelemetry is the transmission of information from biological organisms through the atmosphere by radio waves. It encompasses a wide range of devices that can record environmental variables while attached to an animal, such as depth, salinity and temperature, while permitting the recording and transmitting of the position of an animal, commonly referred to as tracking. A review of biotelemetry, with reference to relevant species in Ireland, is presented. Although a number of marine species have been tagged and tracked in Ireland, these studies were generally of short duration or involved small numbers of individuals. However, these studies have shown that tracking marine megafauna in Ireland can be successful and that there is great potential for biotelemetry.

http://hdl.handle.net/10793/871

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Stable isotope analysis of baleen reveals resource partitioning among sympatric rorquals and population structure in fin whales (2013)

Ryan, C.; McHugh, B.; Trueman, C.N.; Sabin, R.; Deaville, R.; Harrod, C.; Berrow, S.D.;...

Stable isotope analysis of baleen reveals resource partitioning among sympatric rorquals and population structure in fin whales (2013)

Ryan, C.; McHugh, B.; Trueman, C.N.; Sabin, R.; Deaville, R.; Harrod, C.; Berrow, S.D.; O'Connor, I.

Abstract:

Stable isotope analysis is a useful tool for investigating diet, migrations and niche in ecological communities by tracing energy through food-webs. In this study, the stable isotopic composition of carbon and nitrogen in keratin was measured at growth increments of baleen plates from 3 sympatric species of rorquals (Balaenoptera acutrostrata, B. physalus and Megaptera novaeangliae), which died between 1985 and 2010 in Irish and contiguous waters. Bivariate ellipses were used to plot isotopic niches and standard ellipse area parameters were estimated via Bayesian inference using the SIBER routine in the SIAR package in R. Evidence of resource partitioning was thus found among fin, humpback and minke whales using isotopic niches. Highest δ15N values were found in minke whales followed by humpback, and fin whales. Comparison between Northeast Atlantic (Irish/UK and Biscayan) and Mediterranean fin whale isotopic niches support the current International Whaling Commission stock assessme...

http://hdl.handle.net/10793/1282

Displaying Results 1 - 3 of 3 on page 1 of 1

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