Jón Sólmundsson

Decadal shifts in Atlantic cod migrations in Icelandic waters (1951–2025)

Ingibjörg G. Jónsdóttir, Theodoros Karpouzoglou, Warsha Singh, Jón Sólmundsson

Abstract Understanding the long-term stability and plasticity of marine migrations is essential for predicting species’ responses to environmental changes. In this study, we analysed 75 years (1951–2025) of tagging data from two spawning areas to characterize the feeding migrations of Atlantic cod …

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Length-related mortality and recruitment in cod ( Gadus morhua )

Björn Björnsson, Jón Sólmundsson, Pamela J. Woods

Abstract In 2007, the harvest control rule of the Icelandic cod stock was changed from 25% to 20% harvest rate per year. This change promoted a large increase in the abundance of older cod. Subsequently, both the spawning stock biomass (SSB) and …

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Where Are You From? Finding the Origin of the Recently Observed Sprat in Iceland Using a Panel of SNPs

María Quintela, Roger Lille‐Langøy, Christophe Pampoulie, Jón Sólmundsson et autres

ABSTRACT The European sprat is a small pelagic fish characterized by genetically distinct populations including (a) the Norwegian fjords, (b) the Baltic Sea, (c) an oceanic component ranging from the North Sea, Kattegat–Skagerrak, Celtic Sea and Bay of Biscay, as well as …

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Where are you from? Finding the origin of the recently observed sprat in Iceland using a panel of SNPs

María Quintela, Roger Lille‐Langøy, Christophe Pampoulie, Jón Sólmundsson et autres

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Marine communities do not follow the paradigm of increasing similarity through time

Zoë J. Kitchel, Aurore Maureaud, Alexa Fredston, Nancy L. Shackell et autres

Humans have transformed ecosystems through habitat modification, harvesting, species introduction, and climate change. Changes in species distribution and composition are often thought to induce biotic homogenization, defined as an increase in the spatial similarity of species compositions through time. However, it is …

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How different life-history strategies respond to changing environments: a multi-decadal study of groundfish communities

Jón Sólmundsson, Ólafur Á Sigurðsson, Ingibjörg G. Jónsdóttir, Steingrímur Jónsson

In recent decades, climate variability has led to significant shifts in the distribution and prevalence of various fish species in the North Atlantic. These changes are well documented for several groundfish species within the zoogeographical transition waters surrounding Iceland, coinciding with variations …

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Key drivers and spatio-temporal variation in the reproductive potential of Icelandic cod

Ingibjörg G. Jónsdóttir, Jón Sólmundsson, Peter J. Wright, William Butler et autres

Abstract Total egg production (TEP) is a measure of reproductive potential, which along with early survival of larvae, can be affected by maternal factors. Icelandic cod experienced a drastic reduction in abundance from the 1950s to the mid-1990s, followed by an increase …

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FISHGLOB : A collaborative infrastructure to bridge the gap between scientific monitoring and marine biodiversity conservation

Aurore Maureaud, Zoë Kitchel, Alexa Fredston, Robert M. Guralnick et autres

Abstract Large‐scale biodiversity assessments and conservation applications require integrated and up‐to‐date datasets across regions. In the oceans, monitoring is fragmented, which affects knowledge exchange and usage. Among existing monitoring programs, scientific bottom‐trawl surveys (SBTS) are long‐term, rich, and well‐maintained data sources at …

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Temporal dynamics of biotic homogenization and differentiation across marine fish communities

Zoë J. Kitchel, Aurore Maureaud, Alexa Fredston, Nancy L. Shackell et autres

Humans have transformed ecosystems through habitat modification, harvesting, species introduction, and climate change. Changes in species distribution and composition are often thought to induce biotic homogenization, defined as a decline in spatial beta diversity through time. However, it is unclear whether homogenization …

us, gb, Afrique du Sud, no, id, cl, fr (code pays fourni par la source)

Temporal dynamics of biotic homogenization and differentiation across marine fish communities

Zoë J. Kitchel, Aurore Maureaud, Alexa Fredston, Nancy L. Shackell et autres

Humans have transformed ecosystems through habitat modification, harvesting, species introduction, and climate change. Changes in species distribution and composition are often thought to induce biotic homogenization, defined as a decline in spatial beta diversity through time. However, it is unclear whether homogenization …

us, gb, Afrique du Sud, no, id, cl, fr (code pays fourni par la source)

Deepwater Sharks at Their Northern Limits—Distribution, Diet and Trophic Relations

Jón Sólmundsson, Klara B. Jakobsdóttir, Hildur Pétursdóttir

ABSTRACT Deepwater areas and continental slope regions south and west off Iceland are characterized by a relatively high species diversity and abundance of sharks that likely play a critical ecological role within this ecosystem. The study investigates trophic ecology of the sharks …

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Icelandic Cod Stock

Ingibjörg G. Jónsdóttir, Christophe Pampoulie, Einar Hjörleifsson, Jón Sólmundsson

The Icelandic cod stock is close to the centre of its distribution range, both in relation to geographical location and temperature. The biology of the stock is influenced by the highly variable environment around Iceland, which is located at the boundary between …