Foraging ecology and population structuring of baleen whales in the western South Atlantic and eastern South Pacific ...
Baleen whales are highly mobile marine predators that are still recovering from unsustainable exploitation between the 18th and 20th centuries. There remain considerable gaps in our understanding of the migration, foraging localities, prey choice and population connectivity of whales in the Southern...
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| Format: | Thesis |
| Language: | English |
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Apollo - University of Cambridge Repository
2021
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| Online Access: | https://dx.doi.org/10.17863/cam.85814 https://www.repository.cam.ac.uk/handle/1810/338402 |
| Summary: | Baleen whales are highly mobile marine predators that are still recovering from unsustainable exploitation between the 18th and 20th centuries. There remain considerable gaps in our understanding of the migration, foraging localities, prey choice and population connectivity of whales in the Southern Hemisphere as they recover, the impact of these populations on marine ecosystems, and how they are likely to respond to the ongoing climate crisis. Historic information on population connectivity, distribution and diet prior to exploitation provides a baseline and idealised endpoint against which to assess present-day whale populations. In this thesis, I taxonomically identified historic whalebone assemblages using biomolecular techniques, conducted stable isotope analysis of bone collagen and baleen, and analysed whaling catch locality data to: (i) provide a baseline on the isotopic niches of baleen whales across the western South Atlantic and eastern South Pacific; (ii) document historic patterns of resource ... |
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