Search Results - "Kristjansson, Bjarni K."

Multigenerational exposure to elevated temperatures leads to a reduction in standard metabolic rate in the wild by Pilakouta, Natalie, Killen, Shaun S., Kristjánsson, Bjarni K., Skúlason, Skúli, Lindström, Jan, Metcalfe, Neil B., Parsons, Kevin J., White, Craig

“…In light of global climate change, there is a pressing need to understand and predict the capacity of populations to respond to rising temperatures. Metabolic…”
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Invertebrate communities in springs across a gradient in thermal regimes by Kreiling, Agnes-Katharina, Govoni, Daniel P, Pálsson, Snæbjörn, Ólafsson, Jón S, Kristjánsson, Bjarni K

“…In many respects, freshwater springs can be considered as unique ecosystems on the fringe of aquatic habitats. This integrates their uniqueness in terms of…”
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Demographic Basis of Spatially Structured Fluctuations in a Threespine Stickleback Metapopulation by Phillips, Joseph S, Einarsson, Árni, Strickland, Kasha, Ives, Anthony R, Kristjánsson, Bjarni K, Räsänen, Katja

“…AbstractUncovering the demographic basis of population fluctuations is a central goal of population biology. This is particularly challenging for spatially…”
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A warmer environment can reduce sociability in an ectotherm by Pilakouta, Natalie, O'Donnell, Patrick J., Crespel, Amélie, Levet, Marie, Claireaux, Marion, Humble, Joseph L., Kristjánsson, Bjarni K., Skúlason, Skúli, Lindström, Jan, Metcalfe, Neil B., Killen, Shaun S., Parsons, Kevin J.

“…The costs and benefits of being social vary with environmental conditions, so individuals must weigh the balance between these trade‐offs in response to…”
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The role of neutral and adaptive evolutionary processes on patterns of genetic diversity across small cave‐dwelling populations of Icelandic Arctic charr (Salvelinus alpinus) by Judson, Braden J., Kristjánsson, Bjarni K., Leblanc, Camille A.‐L., Ferguson, Moira M.

“…Understanding the adaptability of small populations in the face of environmental change is a central problem in evolutionary biology. Solving this problem is…”
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Invertebrate diversity in groundwater‐filled lava caves is influenced by both neutral‐ and niche‐based processes by Kristjánsson, Bjarni K., Combot, Doriane, Reilent, Anett, Phillips, Joseph S., Leblanc, Camille A.‐L.

“…Understanding which factors shape and maintain biodiversity is essential to understand how ecosystems respond to crises. Biodiversity observed in ecological…”
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Seasonal variation in the invertebrate community and diet of a top fish predator in a thermally stable spring by Kreiling, Agnes-Katharina, O’Gorman, Eoin J., Pálsson, Snæbjörn, Benhaïm, David, Leblanc, Camille A., Ólafsson, Jón S., Kristjánsson, Bjarni K.

“…Many life-history events in aquatic invertebrates are triggered by seasonal changes in water temperature, but other ecological factors may be important as…”
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Experimental evidence for adaptive divergence in response to a warmed habitat reveals roles for morphology, allometry and parasite resistance by Smith, Bethany A., Costa, Ana P. B., Kristjánsson, Bjarni K., Parsons, Kevin J.

“…Ectotherms are expected to be particularly vulnerable to climate change–driven increases in temperature. Understanding how populations adapt to novel thermal…”
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Variation in egg size and offspring phenotype among and within seven Arctic charr morphs by Beck, Samantha V., Räsänen, Katja, Kristjánsson, Bjarni K., Skúlason, Skúli, Jónsson, Zophonías O., Tsinganis, Markos, Leblanc, Camille A.

“…Maternal effects have the potential to alter early developmental processes of offspring and contribute to adaptive diversification. Egg size is a major…”
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Fine scale diversity in the lava: genetic and phenotypic diversity in small populations of Arctic charr Salvelinus alpinus by Leblanc, Camille A, Räsänen, Katja, Morrissey, Michael, Skúlason, Skúli, Ferguson, Moira, Kristjánsson, Bjarni K

“…A major goal in evolutionary biology is to understand the processes underlying phenotypic variation in nature. Commonly, studies have focused on large…”
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What is a fish? The life and legend of David L.G. Noakes by Bouvier, Lynn D., Baylis, Jeffrey R., Klemetsen, Anders, Kristjánsson, Bjarni K., Li, Judith L., Magnan, Pierre, McLaughlin, Robert L., Muir, Andrew M., Sakakura, Yoshitaka, Skúlason, Skúli

“…David Lloyd George Noakes (1942–2020) is best known for his insatiable curiosity, his quick wit and dry sense of humor, his scientific contributions to the…”
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Patterns, processes and conservation management consequences of intraspecific diversity, illustrated by fishes from recently glaciated lakes by Koene, J. Peter, Bean, Colin W., Kristjánsson, Bjarni K., Skúlason, Skúli, Leblanc, Camille A.‐L., Adams, Colin E.

“…Patterns in phenotypic and genotypic diversity within many species are becoming increasingly apparent, although there remain many species for which such…”
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AFLPs and mitochondrial haplotypes reveal local adaptation to extreme thermal environments in a freshwater gastropod by Quintela, María, Johansson, Magnus P, Kristjánsson, Bjarni K, Barreiro, Rodolfo, Laurila, Anssi

“…The way environmental variation shapes neutral and adaptive genetic variation in natural populations is a key issue in evolutionary biology. Genome scans allow…”
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Repeatability of Adaptive Radiation Depends on Spatial Scale: Regional Versus Global Replicates of Stickleback in Lake Versus Stream Habitats by Paccard, Antoine, Hanson, Dieta, Stuart, Yoel E, von Hippel, Frank A, Kalbe, Martin, Klepaker, Tom, Skúlason, Skúli, Kristjánsson, Bjarni K, Bolnick, Daniel I, Hendry, Andrew P, Barrett, Rowan D H

“…Abstract The repeatability of adaptive radiation is expected to be scale-dependent, with determinism decreasing as greater spatial separation among…”
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Geothermal stickleback populations prefer cool water despite multigenerational exposure to a warm environment by Pilakouta, Natalie, Killen, Shaun S., Kristjánsson, Bjarni K., Skúlason, Skúli, Lindström, Jan, Metcalfe, Neil B., Parsons, Kevin J.

“…Given the threat of climate change to biodiversity, a growing number of studies are investigating the potential for organisms to adapt to rising temperatures…”
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Gene expression in the phenotypically plastic Arctic charr (Salvelinus alpinus): A focus on growth and ossification at early stages of development by Beck, Samantha V., Räsänen, Katja, Ahi, Ehsan P., Kristjánsson, Bjarni K., Skúlason, Skúli, Jónsson, Zophonías O., Leblanc, Camille A.

“…Gene expression during development shapes the phenotypes of individuals. Although embryonic gene expression can have lasting effects on developmental…”
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Variation in parasite resistance of Arctic charr, Salvelinus alpinus, between and within sympatric morphs by Karvonen, Anssi, Beck, Samantha V., Skúlason, Skúli, Kristjánsson, Bjarni K., Leblanc, Camille A.

“…Genetic variation in resistance against parasite infections is a predominant feature in host–parasite systems. However, mechanisms maintaining genetic…”
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The importance of egg size and egg energy density for early size patterns and performance of Arctic charr Salvelinus alpinus by Leblanc, Camille Anne-Lise, Kristjánsson, Bjarni K, Skúlason, Skúli

“…The primary target of selection in most breeding programmes in aquaculture is to promote rapid growth while delaying maturation. In most cases, little is known…”
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Differences among families in craniofacial shape at early life-stages of Arctic charr (Salvelinus alpinus) by Beck, Samantha V, Rasanen, Katja, Leblanc, Camille A, Skulason, Skuli, Jonsson, Zophonías O, Kristjánsson, Bjarni K

“…Organismal fitness can be determined at early life-stages, but phenotypic variation at early life-stages is rarely considered in studies on evolutionary…”
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Chironomidae fauna of springs in Iceland – assessing the ecological relevance behind Tuxen’s spring classification by Kreiling, Agnes-Katharina, Ólafsson, Jón S., Pálsson, Snæbjörn, Kristjánsson, Bjarni K.

“…In 1937, S. L. Tuxen studied the animal community of hot springs in Iceland, and classified springs according to their relative temperature into cold, tepid,…”
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