A cascade of warming impacts brings bluefin tuna to Greenland waters
| Autor: | Jesper Boje, Helle Siegstad, Brian R. MacKenzie, Jacob L. Høyer, Mark R. Payne |
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| Předmět: |
0106 biological sciences
Food Chain 010504 meteorology & atmospheric sciences Climate Change Fishing Greenland Mackerel mackerel 01 natural sciences Atlantic mackerel SDG 13 - Climate Action Environmental Chemistry Animals Seawater 14. Life underwater SDG 14 - Life Below Water Trophic cascade climate Ecosystem 0105 earth and related environmental sciences General Environmental Science Apex predator Trophic level Global and Planetary Change Ecology biology food web Tuna 010604 marine biology & hydrobiology temperature SDG 10 - Reduced Inequalities biology.organism_classification Fishery trophic cascade Oceanography 13. Climate action predator‐prey bluefin tuna predator-prey Thunnus |
| Zdroj: | Technical University of Denmark Orbit MacKenzie, B R, Payne, M R, Boje, J, Høyer, J L & Siegstad, H 2014, ' A cascade of warming impacts brings bluefin tuna to Greenland waters ', Global Change Biology, vol. 20, no. 8, pp. 2484-2491 . https://doi.org/10.1111/gcb.12597 |
| Popis: | Rising ocean temperatures are causing marine fish species to shift spatial distributions and ranges, and are altering predator-prey dynamics in food webs. Most documented cases of species shifts so far involve relatively small species at lower trophic levels, and consider individual species in ecological isolation from others. Here, we show that a large highly migratory top predator fish species has entered a high latitude subpolar area beyond its usual range. Bluefin tuna, Thunnus thynnus Linnaeus 1758, were captured in waters east of Greenland (65°N) in August 2012 during exploratory fishing for Atlantic mackerel, Scomber scombrus Linnaeus 1758. The bluefin tuna were captured in a single net-haul in 9–11°C water together with 6tonnes of mackerel, which is a preferred prey species and itself a new immigrant to the area. Regional temperatures in August 2012 were historically high and contributed to a warming trend since 1985, when temperatures began to rise. The presence of bluefin tuna in this region is likely due to a combination of warm temperatures that are physiologically more tolerable and immigration of an important prey species to the region. We conclude that a cascade of climate change impacts is restructuring the food web in east Greenland waters. |
| Databáze: | OpenAIRE |
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