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Genetic and Shape Differences of Arctic Charr Morphs in Connected Lakes

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Earlier this year Han Xiao along with co-authors Arnar Pálsson, Zophonías O. Jónsson and Sigurður S. Snorrason published a paper in the journal Molecular Ecology. In this paper they explored genetic and shape differences between Arctic charr morphs in two neighbouring lakes in Iceland. They collected different Arctic charr morphs from lake Þingvallavatn and lake […]

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Key Drivers and Variability in the Timing and Location of Reproductive Potential in Icelandic Cod (Gadus morhua)

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This past summer, Ingibjörg G. Jónsdóttir at the Marine and Freshwater Research Institute, along with her co-authors Jón Sólmundsson, Peter J. Wright, William Butler, and Pamela Woods, published a paper in the ICES Journal of Marine Science. The study, titled ‘Key drivers and spatio-temporal variation in the reproductive potential of Icelandic cod’, investigates the roles

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Bottom trawling gear and its impact on the seafloor

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Bottom trawling is harmful to life on the ocean floor. Many people agree with this. But we still need to learn more about how and why it causes damage.   Mason Kenny wanted to better understand the impact of bottom trawling gear on the seafloor. During his Master’s in Environmental and Natural Resources at The

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Dive Surveys Alongside Beach Seining Help Locate Young Atlantic Cod and Saithe in Shallow Coastal Areas

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    What are fish nursery grounds? Nursery grounds are places where young fish find food, favourable temperature and protection from predators during their early life stages. Different species of fish, including Atlantic cod (Gadus morhua) and saithe (Pollachius virens) juveniles, settle in nearshore areas at different times and depths, depending for example on the

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What swims between the algae of the rocky intertidal zone?

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What swims between the algae of the rocky intertidal zone? You can find a very lively ecosystem in the rocky intertidal zones along Iceland‘s coastlines. One highly abundant species using this habitat is the brown algae Ascophyllum nodosum, also commonly known as knotted wrack in English and Klóþang in Icelandic. This species is harvested for

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Where are the baby Brown trout and Arctic charr?

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  Nursery grounds are habitats mainly used by juvenile (baby) fish. As the name suggests these habitats are like nurseries for fish. Nursery grounds are very important for the fish species using them. Since they provide protection and food for the young. Therefore, knowing where they are and how they are holding up is important.

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The brown trout of Thingvallavatn and Ölfusá

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Marcos Lagunas and his collaborators from the University of Iceland and the Marine and Freshwater Institute teamed up for a project on the genetics of brown trout. Last year, they published an article where they looked into the genetic structure of different trout populations in Thingvallavatn and Ölfusá.   The decline of trout in Thingvallavatn

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Can we protect biodiversity with fisheries laws?

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But what is biodiversity, and why do we need to protect it? „Biodiversity“, a term that we are confronted with every day, whether we hear about it in the media or read about it in scientific articles. Simply said, biodiversity describes the variety of all living things on Earth, from plants and animals, to fungi

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