Browsing Brage INN by Author "Hayden, Brian"
Now showing items 1-9 of 9
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Circumpolar patterns of Arctic freshwater fish biodiversity: A baseline for monitoring
Laske, Sarah M.; Amundsen, Per-Arne; Christoffersen, Kirsten Seestern; Erkinaro, Jaakko; Guðbergsson, Guðni; Hayden, Brian; Heino, Jani; Holmgren, Kerstin; Kahilainen, Kimmo Kalevi; Lento, Jennifer; Orell, Panu; Östergren, Jan; Power, Michael; Rafikov, Ruslan; Romakkaniemi, Atso; Svenning, Martin; Swanson, Heidi; Whitman, Matthew; Zimmerman, Christian E. (Peer reviewed; Journal article, 2019)Climate change, biological invasions, and anthropogenic disturbance pose a threat to the biodiversity and function of Arctic freshwater ecosystems. Understanding potential changes in fish species distribution and richness ... -
Environmental and biological factors are joint drivers of mercury biomagnification in subarctic lake food webs along a climate and productivity gradient
Kozak, Natalia; Ahonen, Salla A.; Keva, Ossi; Østbye, Kjartan; Taipale, Sami J.; Hayden, Brian; Kahilainen, Kimmo K. (Peer reviewed; Journal article, 2021)Subarctic lakes are getting warmer and more productive due to the joint effects of climate change and intensive land-use practices (e.g. forest clear-cutting and peatland ditching), processes that potentially increase ... -
Mercury and amino acid content relations in northern pike (Esox lucius) in subarctic lakes along a climate-productivity gradient
Kozak, Natalia; Kahilainen, Kimmo Kalevi; Pakkanen, Hannu K.; Hayden, Brian; Østbye, Kjartan; Taipale, Sami J. (Peer reviewed; Journal article, 2023)Mercury is a highly toxic element for consumers, but its relation to amino acids and physiology of wild fish is not well known. The main aim of this study was to evaluate how total mercury content (THg) of northern pike ... -
Multitrophic biodiversity patterns and environmental descriptors of sub-Arctic lakes in northern Europe
Lau, Danny C.P.; Christoffersen, Kirsten S.; Erkinaro, Jaakko; Hayden, Brian; Heino, Jani; Hellsten, Seppo; Holmgren, Kerstin; Kahilainen, Kimmo Kalevi; Kahlert, Maria; Karjalainen, Satu Maaria; Karlsson, Jan; Forsström, Laura; Lento, Jennifer; Mjelde, Marit; Ruuhijärvi, Jukka; Sandøy, Steinar; Schartau, Ann Kristin; Svenning, Martin; Vrede, Tobias; Goedkoop, Willem (Peer reviewed; Journal article, 2020)1. Arctic and sub-Arctic lakes in northern Europe are increasingly threatened by climate change, which can affect their biodiversity directly by shifting thermal and hydrological regimes, and indirectly by altering landscape ... -
Predator community and resource use jointly modulate the inducible defense response in body height of crucian carp
de Meo, Ilaria; Østbye, Kjartan; Kahilainen, Kimmo Kalevi; Hayden, Brian; Fagertun, Christian; Poleo, Antonio (Peer reviewed; Journal article, 2021)Phenotypic plasticity can be expressed as changes in body shape in response to environmental variability. Crucian carp (Carassius carassius), a widespread cyprinid, displays remarkable plasticity in body morphology and ... -
Resource polymorphism in European whitefish: Analysis of fatty acid profiles provides more detailed evidence than traditional methods alone
Thomas, Stephen M; Kainz, Martin J.; Amundsen, Per-Arne; Hayden, Brian; Taipale, Sami Johan; Kahilainen, Kimmo Kalevi (Peer reviewed; Journal article, 2019)Resource polymorphism—whereby ancestral generalist populations give rise to several specialised morphs along a resource gradient—is common where species colonise newly formed ecosystems. This phenomenon is particularly ... -
Resource use of crucian carp along a lake productivity gradient is related to body size, predation risk, and resource competition
de Meo, Ilaria; Østbye, Kjartan; Kahilainen, Kimmo Kalevi; Hayden, Brian; Magnus, Marius; Poléo, Antonio B. S. (Peer reviewed; Journal article, 2022)Generalist fish species can feed on a wide resource spectrum and across trophic levels depending on resource availability and trophic interactions. Crucian carp (Carassius carassius) represents a good candidate species to ... -
Seasonal changes in European whitefish muscle and invertebrate prey fatty acid composition in a subarctic lake
Keva, Ossi; Tang, Patrik; Käkelä, Reijo; Hayden, Brian; Taipale, Sami J.; Harrod, Chris; Kahilainen, Kimmo Kalevi (Peer reviewed; Journal article, 2019)Ambient light and temperature show extreme seasonal variation in subarctic lakes due to the midnight sun period in summer and cold polar night period in winter. These changes have clear impacts on fish feeding and reproduction ... -
Trophic ecology of piscivorous Arctic charr (Salvelinus alpinus (L.)) in subarctic lakes with contrasting food-web structures
Kahilainen, Kimmo Kalevi; Thomas, Stephen; Harrod, Chris; Hayden, Brian; Eloranta, Antti (Journal article; Peer reviewed, 2018)