Publications by authors named "Igor Arregui"
Article Synopsis
- Tuna are important commercial species that serve as a key protein source worldwide and are affected by climate change, with their distribution patterns shifting in response to environmental conditions.
- A study examined the distribution of six tuna species from 1958 to 2004, revealing that suitable habitats have moved poleward, averaging 6.5 km per decade in the northern hemisphere and 5.5 km in the southern hemisphere.
- Future projections predict declines in temperate tunas in tropical regions while indicating increased abundance of skipjack and yellowfin tunas in the tropics and coastal economic zones, highlighting the need for adaptive management to address climate change impacts.
This study presents a methodology for the automated analysis of commercial medium-range sonar signals for detecting presence/absence of bluefin tuna (Tunnus thynnus) in the Bay of Biscay. The approach uses image processing techniques to analyze sonar screenshots. For each sonar image we extracted measurable regions and analyzed their characteristics.
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