Search Results - "Sigurdsson, Bjarni D"

Systemic analysis of a developing plant community on the island of Surtsey by Schrenk, Hannah, Magnússon, Borgþór, Sigurdsson, Bjarni D., zu Castell, Wolfgang

“…Based on our recently developed method to quantify Gunderson and Holling's adaptive cycle, we provide a holistic analysis of a vascular plant community on the…”
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Decadal soil warming decreased vascular plant above and belowground production in a subarctic grassland by inducing nitrogen limitation by Fang, Chao, Verbrigghe, Niel, Sigurdsson, Bjarni D, Ostonen, Ivika, Leblans, Niki I W, Marañón-Jiménez, Sara, Fuchslueger, Lucia, Sigurðsson, Páll, Meeran, Kathiravan, Portillo-Estrada, Miguel, Verbruggen, Erik, Richter, Andreas, Sardans, Jordi, Peñuelas, Josep, Bahn, Michael, Vicca, Sara, Janssens, Ivan A

“…Below and aboveground vegetation dynamics are crucial in understanding how climate warming may affect terrestrial ecosystem carbon cycling. In contrast to…”
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Stem wood properties of mature Norway spruce after 3 years of continuous exposure to elevated [CO₂] and temperature by KOSTIAINEN, KATRI, KAAKINEN, SEIJA, SARANPÄÄ, PEKKA, SIGURDSSON, BJARNI D, LUNDQVIST, SVEN-OLOF, LINDER, SUNE, VAPAAVUORI, ELINA

“…The objective of the study was to investigate the interactive effects of elevated atmospheric carbon dioxide concentration, [CO₂], and temperature on the wood…”
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Microbial temperature sensitivity and biomass change explain soil carbon loss with warming by Walker, Tom W. N., Kaiser, Christina, Strasser, Florian, Herbold, Craig W., Leblans, Niki I. W., Woebken, Dagmar, Janssens, Ivan A., Sigurdsson, Bjarni D., Richter, Andreas

“…Soil microorganisms control carbon losses from soils to the atmosphere 1 – 3 , yet their responses to climate warming are often short-lived and unpredictable 4…”
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Optimal growth temperature of Arctic soil bacterial communities increases under experimental warming by Rijkers, Ruud, Rousk, Johannes, Aerts, Rien, Sigurdsson, Bjarni D., Weedon, James T.

“…Future climate warming in the Arctic will likely increase the vulnerability of soil carbon stocks to microbial decomposition. However, it remains uncertain to…”
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Plant invasion is associated with higher plant–soil nutrient concentrations in nutrient‐poor environments by Sardans, Jordi, Bartrons, Mireia, Margalef, Olga, Gargallo‐Garriga, Albert, Janssens, Ivan A., Ciais, Phillipe, Obersteiner, Michael, Sigurdsson, Bjarni D., Chen, Han Y. H., Peñuelas, Josep

“…Plant invasion is an emerging driver of global change worldwide. We aimed to disentangle its impacts on plant–soil nutrient concentrations. We conducted a…”
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Impact of Soil Warming on the Plant Metabolome of Icelandic Grasslands by Gargallo-Garriga, Albert, Ayala-Roque, Marta, Sardans, Jordi, Bartrons, Mireia, Granda, Victor, Sigurdsson, Bjarni D, Leblans, Niki I W, Oravec, Michal, Urban, Otmar, Janssens, Ivan A, Peñuelas, Josep

“…Climate change is stronger at high than at temperate and tropical latitudes. The natural geothermal conditions in southern Iceland provide an opportunity to…”
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Soil warming duration and magnitude affect the dynamics of fine roots and rhizomes and associated C and N pools in subarctic grasslands by Bhattarai, Biplabi, Sigurdsson, Bjarni D, Sigurdsson, Páll, Leblans, Niki, Janssens, Ivan, Meynzer, Wendelien, Devarajan, Arun Kumar, Truu, Jaak, Truu, Marika, Ostonen, Ivika

“…Abstract Background and Aims The response of subarctic grassland's below-ground to soil warming is key to understanding this ecosystem’s adaptation to future…”
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Sensitivity of soil carbon fractions and their specific stabilization mechanisms to extreme soil warming in a subarctic grassland by Poeplau, Christopher, Kätterer, Thomas, Leblans, Niki I. W., Sigurdsson, Bjarni D.

“…Terrestrial carbon cycle feedbacks to global warming are major uncertainties in climate models. For in‐depth understanding of changes in soil organic carbon…”
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Effect of elevated [CO₂] on stem wood properties of mature Norway spruce grown at different soil nutrient availability by Kostiainen, K, Kaakinen, S, Saranpaa, P, Sigurdsson, B.D, Linder, S, Vapaavuori, E

“…The objective of the present study was to investigate the interactive effects of elevated [CO2] and soil nutrient availability on secondary xylem structure and…”
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Phenological responses of Icelandic subarctic grasslands to short‐term and long‐term natural soil warming by Leblans, Niki I. W., Sigurdsson, Bjarni D., Vicca, Sara, Fu, Yongshuo, Penuelas, Josep, Janssens, Ivan A.

“…The phenology of vegetation, particularly the length of the growing season (LOS; i.e., the period from greenup to senescence), is highly sensitive to climate…”
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Climate change and geothermal ecosystems: natural laboratories, sentinel systems, and future refugia by O'Gorman, Eoin J, Benstead, Jonathan P, Cross, Wyatt F, Friberg, Nikolai, Hood, James M, Johnson, Philip W, Sigurdsson, Bjarni D, Woodward, Guy

“…Understanding and predicting how global warming affects the structure and functioning of natural ecosystems is a key challenge of the 21st century. Isolated…”
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Negative priming of soil organic matter following long-term in situ warming of sub-arctic soils by Verbrigghe, Niel, Meeran, Kathiravan, Bahn, Michael, Fuchslueger, Lucia, Janssens, Ivan A., Richter, Andreas, Sigurdsson, Bjarni D., Soong, Jennifer L., Vicca, Sara

“…•Negative priming was observed in long-term warmed soils when amended with glucose.•Warming-induced SOM modifications, and not of the microbial community,…”
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Long-term warming-induced trophic downgrading in the soil microbial food web by Dahl, Mathilde Borg, Söllinger, Andrea, Sigurðsson, Páll, Janssens, Ivan, Peñuelas, Josep, Sigurdsson, Bjarni D., Richter, Andreas, Tveit, Alexander, Urich, Tim

“…Climatic warming has been hypothesized to accelerate organic matter decomposition by soil microorganisms and thereby enhance carbon (C) release to the…”
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Growth of mature boreal Norway spruce was not affected by elevated [CO(2)] and/or air temperature unless nutrient availability was improved by Sigurdsson, Bjarni D, Medhurst, Jane L, Wallin, Göran, Eggertsson, Olafur, Linder, Sune

“…The growth responses of mature Norway spruce (Picea abies (L.) Karst.) trees exposed to elevated [CO(2)] (CE; 670-700 ppm) and long-term optimized nutrient…”
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Individual and interactive effects of warming and nitrogen supply on CO 2 fluxes and carbon allocation in subarctic grassland by Meeran, Kathiravan, Verbrigghe, Niel, Ingrisch, Johannes, Fuchslueger, Lucia, Müller, Lena, Sigurðsson, Páll, Sigurdsson, Bjarni D, Wachter, Herbert, Watzka, Margarete, Soong, Jennifer L, Vicca, Sara, Janssens, Ivan A, Bahn, Michael

“…Climate warming has been suggested to impact high latitude grasslands severely, potentially causing considerable carbon (C) losses from soil. Warming can also…”
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Acclimation of Fine Root Systems to Soil Warming: Comparison of an Experimental Setup and a Natural Soil Temperature Gradient by Parts, Kaarin, Tedersoo, Leho, Schindlbacher, Andreas, Sigurdsson, Bjarni D., Leblans, Niki I. W., Oddsdóttir, Edda S., Borken, Werner, Ostonen, Ivika

“…Global warming is predicted to impact high-latitude and high-altitude forests severely, jeopardizing their overall functioning and carbon storage, both of…”
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Individual and interactive effects of warming and nitrogen supply on CO2 fluxes and carbon allocation in subarctic grassland by Meeran, Kathiravan, Verbrigghe, Niel, Ingrisch, Johannes, Fuchslueger, Lucia, Müller, Lena, Sigurðsson, Páll, Sigurdsson, Bjarni D., Wachter, Herbert, Watzka, Margarete, Soong, Jennifer L., Vicca, Sara, Janssens, Ivan A., Bahn, Michael

“…Climate warming has been suggested to impact high latitude grasslands severely, potentially causing considerable carbon (C) losses from soil. Warming can also…”
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Prolonged exposure does not increase soil microbial community compositional response to warming along geothermal gradients by Radujkovic, Dajana, Verbruggen, Erik, Sigurdsson, Bjarni D, Leblans, Niki I W, Janssens, Ivan A, Vicca, Sara, Weedon, James T

“…Global change is expected to affect soil microbial communities through their responsiveness to temperature. It has been proposed that prolonged exposure to…”
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Ecological consequences of the expansion of N₂-fixing plants in cold biomes by Hiltbrunner, Erika, Aerts, Rien, Bühlmann, Tobias, Huss-Danell, Kerstin, Magnusson, Borgthor, Myrold, David D, Reed, Sasha C, Sigurdsson, Bjarni D, Körner, Christian

“…Research in warm-climate biomes has shown that invasion by symbiotic dinitrogen (N₂)-fixing plants can transform ecosystems in ways analogous to the…”
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