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41 results on '"FRIBERG, Nikolai"'

1. Cover Image

Author

Lento, Jennifer, primary, Culp, Joseph M., additional, Levenstein, Brianna, additional, Aroviita, Jukka, additional, Baturina, Maria A., additional, Bogan, Daniel, additional, Brittain, John E., additional, Chin, Krista, additional, Christoffersen, Kirsten S., additional, Docherty, Catherine, additional, Friberg, Nikolai, additional, Ingimarsson, Finnur, additional, Jacobsen, Dean, additional, Lau, Danny Chun Pong, additional, Loskutova, Olga A., additional, Milner, Alexander, additional, Mykrä, Heikki, additional, Novichkova, Anna A., additional, Ólafsson, Jón S., additional, Schartau, Ann Kristin, additional, Shaftel, Rebecca, additional, and Goedkoop, Willem, additional

Published
2022
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2. Temperature and spatial connectivity drive patterns in freshwater macroinvertebrate diversity across the Arctic

Author

Lento, Jennifer, primary, Culp, Joseph M., additional, Levenstein, Brianna, additional, Aroviita, Jukka, additional, Baturina, Maria A., additional, Bogan, Daniel, additional, Brittain, John E., additional, Chin, Krista, additional, Christoffersen, Kirsten S., additional, Docherty, Catherine, additional, Friberg, Nikolai, additional, Ingimarsson, Finnur, additional, Jacobsen, Dean, additional, Lau, Danny Chun Pong, additional, Loskutova, Olga A., additional, Milner, Alexander, additional, Mykrä, Heikki, additional, Novichkova, Anna A., additional, Ólafsson, Jón S., additional, Schartau, Ann Kristin, additional, Shaftel, Rebecca, additional, and Goedkoop, Willem, additional

Published
2021
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4. Trait‐based ecology at large scales: assessing functional trait correlations, phylogenetic constraints and spatial variability using open data

Author

Wilkes, Martin A., Edwards, Francois, Jones, J. Iwan, Murphy, John F., England, Judy, Friberg, Nikolai, Hering, Daniel, Poff, N. LeRoy, Usseglio‐Polatera, Philippe, Verberk, Wilco C.E.P., Webb, Jon, Brown, Lee E., Wilkes, Martin A., Edwards, Francois, Jones, J. Iwan, Murphy, John F., England, Judy, Friberg, Nikolai, Hering, Daniel, Poff, N. LeRoy, Usseglio‐Polatera, Philippe, Verberk, Wilco C.E.P., Webb, Jon, and Brown, Lee E.

Abstract

The growing use of functional traits in ecological research has brought new insights into biodiversity responses to global environmental change. However, further progress depends on overcoming three major challenges involving (a) statistical correlations between traits, (b) phylogenetic constraints on the combination of traits possessed by any single species, and (c) spatial effects on trait structure and trait–environment relationships. Here, we introduce a new framework for quantifying trait correlations, phylogenetic constraints and spatial variability at large scales by combining openly available species’ trait, occurrence and phylogenetic data with gridded, high‐resolution environmental layers and computational modelling. Our approach is suitable for use among a wide range of taxonomic groups inhabiting terrestrial, marine and freshwater habitats. We demonstrate its application using freshwater macroinvertebrate data from 35 countries in Europe. We identified a subset of available macroinvertebrate traits, corresponding to a life‐history model with axes of resistance, resilience and resource use, as relatively unaffected by correlations and phylogenetic constraints. Trait structure responded more consistently to environmental variation than taxonomic structure, regardless of location. A re‐analysis of existing data on macroinvertebrate communities of European alpine streams supported this conclusion, and demonstrated that occurrence‐based functional diversity indices are highly sensitive to the traits included in their calculation. Overall, our findings suggest that the search for quantitative trait–environment relationships using single traits or simple combinations of multiple traits is unlikely to be productive. Instead, there is a need to embrace the value of conceptual frameworks linking community responses to environmental change via traits which correspond to the axes of life‐history models. Through a novel integration of tools and databases, our flexibl

Published
2020

5. Trait‐based ecology at large scales: Assessing functional trait correlations, phylogenetic constraints and spatial variability using open data

Author

Wilkes, Martin A., primary, Edwards, François, additional, Jones, J. Iwan, additional, Murphy, John F., additional, England, Judy, additional, Friberg, Nikolai, additional, Hering, Daniel, additional, Poff, N. LeRoy, additional, Usseglio‐Polatera, Philippe, additional, Verberk, Wilco C. E. P., additional, Webb, Jon, additional, and Brown, Lee E., additional

Published
2020
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6. Ecological correlates of riverine diatom and macroinvertebrate alpha and beta diversity across Arctic Fennoscandia

Author

Brittain, John E., primary, Heino, Jani, additional, Friberg, Nikolai, additional, Aroviita, Jukka, additional, Kahlert, Maria, additional, Karjalainen, Satu‐Maaria, additional, Keck, François, additional, Lento, Jennifer, additional, Liljaniemi, Petri, additional, Mykrä, Heikki, additional, Schneider, Susanne C., additional, and Ylikörkkö, Jukka, additional

Published
2020
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8. Effective restoration of aquatic ecosystems: scaling the barriers

Author

Friberg, Nikolai, Buijse, Tom, Carter, Caitríona, Hering, Daniel, Spears, Bryan M., Verdonschot, Piet, Moe, Therese Fosholt, Friberg, Nikolai, Buijse, Tom, Carter, Caitríona, Hering, Daniel, Spears, Bryan M., Verdonschot, Piet, and Moe, Therese Fosholt

Abstract

The focus of ecosystem restoration has recently shifted from pure rehabilitation objectives to both improving ecological functioning and the delivery of ecosystem services. However, these different targets need to be integrated to create a unified, synergistic, and balanced restoration approach. This should be done by combining state-of-the-art knowledge from natural and social sciences to create manageable units of restoration that consider both the temporal and multiple spatial scales of ecosystems, legislative units, and policy agendas. Only by considering these aspects combined can we accomplish more cost-efficient restoration resulting in resilient ecosystems that provide a wealth of ecosystem services and the possibility for sustainable economic development in the future. We propose a novel conceptual framework that will yield more effective ecosystem restoration: the Operational Restoration Unit. This is based on scale-dependent restoration actions that can adhere easily to the relevant environmental legislation, encompass the spatial and temporal resilience of aquatic ecosystems, and consider the sum of human pressures acting on water bodies. This opens up possibilities for an effective integration of the restoration agenda into the delivery of major policy objectives of economic growth, regional development, and human security.

Published
2017

13. Temperature effects on fish production across a natural thermal gradient

Author

O'Gorman, Eoin J., primary, Ólafsson, Ólafur P., additional, Demars, Benoît O. L., additional, Friberg, Nikolai, additional, Guðbergsson, Guðni, additional, Hannesdóttir, Elísabet R., additional, Jackson, Michelle C., additional, Johansson, Liselotte S., additional, McLaughlin, Órla B., additional, Ólafsson, Jón S., additional, Woodward, Guy, additional, and Gíslason, Gísli M., additional

Published
2016
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14. Plant trait characteristics vary with size and eutrophication in European lowland streams

Author

Baattrup-Pedersen, Annette, Gothe, Emma, Larsen, Søren E., O'Hare, Matthew, Birk, Sebastian, Riis, Tenna, Friberg, Nikolai, Baattrup-Pedersen, Annette, Gothe, Emma, Larsen, Søren E., O'Hare, Matthew, Birk, Sebastian, Riis, Tenna, and Friberg, Nikolai

Abstract

1. Previous studies investigating community-level relationships between plant functional trait characteristics and stream environmental characteristics remain scarce. Here, we used community-weighted means to identify how plant traits link to lowland stream typology and how agricultural intensity in the catchment affects trait composition. 2. We analysed plant trait characteristics in 772 European lowland streams to test the following two hypotheses: (i) trait characteristics differ between plant communities in small and medium-sized streams, reflecting adaptations to different habitat characteristics, and (ii) trait characteristics vary with the intensity of agricultural land use in the stream catchment, mediated either directly by an increase in productive species or indirectly by an increase in species that efficiently intercept and utilize light. 3. We found that the communities in small streams were characterized by a higher abundance of light-demanding species growing from single apical meristems, reproducing by seeds and rooted to the bottom with floating and/or heterophyllous leaves, whereas the community in medium-sized streams was characterized by a higher abundance of productive species growing from multi-apical and basal growth meristems forming large canopies. 4. We also found indications that community trait characteristics were affected by eutrophication. We did not find enhanced abundance of productive species with an increasing proportion of agriculture in the catchments. Instead, we found an increase in the abundance of species growing from apical and multi-apical growth meristems as well as in the abundance of species tolerant of low light availability. The increase in the abundance of species possessing these traits likely reflects different strategies to obtain greater efficiency in light interception and utilization in nutrient-enriched environments. 5. Synthesis and applications. Our findings challenge the general assumption of the EU Water Fr

Published
2015

15. Contrasting the roles of section length and instream habitat enhancement for river restoration success: a field study of 20 European restoration projects

Author

Hering, Daniel, primary, Aroviita, Jukka, additional, Baattrup-Pedersen, Annette, additional, Brabec, Karel, additional, Buijse, Tom, additional, Ecke, Frauke, additional, Friberg, Nikolai, additional, Gielczewski, Marek, additional, Januschke, Kathrin, additional, Köhler, Jan, additional, Kupilas, Benjamin, additional, Lorenz, Armin W., additional, Muhar, Susanne, additional, Paillex, Amael, additional, Poppe, Michaela, additional, Schmidt, Torsten, additional, Schmutz, Stefan, additional, Vermaat, Jan, additional, Verdonschot, Piet F. M., additional, Verdonschot, Ralf C. M., additional, Wolter, Christian, additional, and Kail, Jochem, additional

Published
2015
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21. Temperature and the metabolic balance of streams

Author

DEMARS, BENOÎT O.L., primary, RUSSELL MANSON, J., additional, ÓLAFSSON, JON S., additional, GÍSLASON, GÍSLI M., additional, GUDMUNDSDÓTTIR, RAKEL, additional, WOODWARD, GUY, additional, REISS, JULIA, additional, PICHLER, DORIS E., additional, RASMUSSEN, JES J., additional, and FRIBERG, NIKOLAI, additional

Published
2011
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22. Interaction of Climate Change and Eutrophication

Author

Jeppesen, Erik, primary, Moss, Brian, additional, Bennion, Helen, additional, Carvalho, Laurence, additional, DeMeester, Luc, additional, Feuchtmayr, Heidrun, additional, Friberg, Nikolai, additional, Gessner, Mark O., additional, Hefting, Mariet, additional, Lauridsen, Torben L., additional, Liboriussen, Lone, additional, Malmquist, Hilmar J., additional, May, Linda, additional, Meerhoff, Mariana, additional, Olafsson, Jon S., additional, Soons, Merel B., additional, and Verhoeven, Jos T. A., additional

Published
2010
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