• Benthic transition zones in the Atlantic gateway to a changing Arctic ocean 

      Jørgensen, Lis Lindal; Pecuchet, Laurene; Ingvaldsen, Randi Brunvær; Primicerio, Raul (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-04-06)
      The biogeographic transition from boreal to Arctic marine communities entails a strong taxonomic and functional turnover. Communities living in these areas are being strongly affected by climate warming with rapid reorganizations and change in ecosystem functioning. We assess the megabenthic species composition and functional character in a transition zone around Svalbard. The relationships between ...
    • Coastal habitats and their importance for the diversity of benthic communities: A species- and trait-based approach 

      Henseler, Christina; Nordström, Marie C.; Törnroos, Anna; Snickars, Martin; Pecuchet, Laurene; Lindegren, Martin; Bonsdorff, Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-26)
      Coastal habitats are used by a great variety of organisms during some or all stages of their life cycle. When assessing the link between biological communities and their environment, most studies focus on environmental gradients, whereas the comparison between multiple habitats is rarely considered. Consequently, trait-based aspects of biodiversity in and between habitats have received little ...
    • Disentangling temporal food web dynamics facilitates understanding of ecosystem functioning 

      Kortsch, Susanne; Frelat, Romain; Pecuchet, Laurene; Olivier, Pierre; Putnis, Ivars; Bonsdorff, Erik; Ojaveer, Henn; Jurgensone, Iveta; Strāķe, Solvita; Rubene, Gunta; Krūze, Ēriks; Nordström, Marie C. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-19)
      <ol> <li>Studying how food web structure and function vary through time represents an opportunity to better comprehend and anticipate ecosystem changes. Yet, temporal studies of highly resolved food web structure are scarce. With few exceptions, most temporal food web studies are either too simplified, preventing a detailed assessment of structural properties or binary, missing the temporal ...
    • Effects of life-history traits and network topological characteristics on the robustness of marine food webs 

      Merillet, Laurene; Robert, Marianne; Hernvann, Pierre-Yves; Pecuchet, Laurene; Pavoine, Sandrine; Mouchet, Maud; Primicerio, Raul; Kopp, Dorothée (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-08)
      Management targets for biodiversity preservation are shifting from individual species to an ecosystem-wide focus. Indeed, the perturbation analysis of interaction networks, such as food webs, better captures the response of biodiversity to environmental pressures than single-species considerations. Here we propose a framework that examines food web robustness to a given perturbation based on ...
    • Marine fish traits follow fast-slow continuum across oceans 

      Beukhof, Esther; Frelat, Romain; Pecuchet, Laurene; Maureaud, Aurore; Dencker, Tim Spaanheden; Sólmundsson, Jón; Punzón, Antonio; Primicerio, Raul; Hidalgo, Manuel; Möllmann, Christian; Lindegren, Martin (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-29)
      A fundamental challenge in ecology is to understand why species are found where they are and predict where they are likely to occur in the future. Trait-based approaches may provide such understanding, because it is the traits and adaptations of species that determine which environments they can inhabit. It is therefore important to identify key traits that determine species distributions and ...
    • Novel feeding interactions amplify the impact of species redistribution on an Arctic food web 

      Pecuchet, Laurene; Blanchet, Marie-Anne; Frainer, Andre barbosa; Husson, Bérengère; Jørgensen, Lis Lindal; Kortsch, Susanne; Primicerio, Raul (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-01)
      Species are redistributing globally in response to climate warming, impacting ecosystem functions and services. In the Barents Sea, poleward expansion of boreal species and a decreased abundance of Arctic species are causing a rapid borealization of the Arctic communities. This borealization might have profound consequences on the Arctic food web by creating novel feeding interactions between ...
    • Recent warming causes functional borealization and diversity loss in deep fish communities east of Greenland 

      Emblemsvåg, Margrete; Pecuchet, Laurene; Velle, Liv Guri; Nogueira, Adriana; Primicerio, Raul (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-13)
      Aim: We assessed temporal trends in functional diversity of the deep-sea demersal fish communities of East Greenland to characterize ecological responses to rising sea temperatures.<p> <p>Location: The study region encompasses a shelf and slope area located offshore between 63°N and 66°N, east of Greenland. <p>Methods: A unique dataset of demersal fish abundance covering a depth range of 1500 m ...
    • Spatio-temporal dynamics of multi-trophic communities reveal ecosystem-wide functional reorganization 

      Pecuchet, Laurene; Lindegren, Martin; Kortsch, Susanne; Całkiewicz, Joanna; Jurgensone, Iveta; Margonski, Piotr; Otto, Saskia A.; Putnis, Ivars; Strāķe, Solvita; Nordström, Marie C. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-13)
      Large‐scale alterations in marine ecosystems as a response to environmental and anthropogenic pressures have been documented worldwide. Yet, these are primarily investigated by assessing abundance fluctuations of a few dominant species, which inadequately reflect ecosystem‐wide changes. In addition, it is increasingly recognized that it is not species identity per se, but their traits that determine ...
    • Spatio-temporal turnover and drivers of bentho-demersal community and food web structure in a high-latitude marine ecosystem 

      Pecuchet, Laurene; Jørgensen, Lis Lindal; Dolgov, Andreyv V.; Eriksen, Elena; Husson, Berengere; Skern-Mauritzen, Mette; Primicerio, Raul (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-14)
      Aim: Assess the spatial and temporal turnover of bentho-demersal marine fauna by integrating ecological metrics at the community and food web levels and evaluate their main environmental and anthropogenic drivers.<p> <p>Location: Barents Sea. <p>Method: We analysed data of benthic and bentho-pelagic fish and megabenthic invertebrates caught in the Barents Sea ecosystem survey in August–Septem ...
    • Successive extreme climatic events lead to immediate, large-scale, and diverse responses from fish in the Arctic 

      Husson, Berengere; Lind, Sigrid; Fossheim, Maria; Solvang, Hiroko Kato; Skern-Mauritzen, Mette; Pecuchet, Laurene; Ingvaldsen, Randi Brunvær; Dolgov, Andrey V.; Primicerio, Raul (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-06)
      The warming trend of the Arctic is punctuated by several record-breaking warm years with very low sea ice concentrations. The nature and reversibility of marine ecosystem responses to these multiple extreme climatic events (ECEs) are poorly understood. Here, we investigate the ecological signatures of three successive bottom temperature maxima concomitant with surface ECEs between 2004 and 2017 in ...