Department Environmental Social Sciences

TREBRIDGE – Transformation toward resilient ecosystems: Bridging natural and social sciences

With courtesy of Ariel do Prado

Overview

The research project TREBRIDGE focuses on watershed management in Alpine mountain areas in Switzerland. For erosion and flood control, check dams have been constructed in streams and clear-​cuts have been replanted with monocultures for centuries. The maintenance of flood management infrastructure requires high financial investments and at the same time affects the quality and resilience of the affected ecosystems. The aim of TREBRIDGE is to identify policy and management approaches of watersheds and forests in alpine regions. These approaches should on the one hand increase the resilience of mountain ecosystems in coping with extreme weather events and on the other hand meet societal needs regarding natural resource use and protection. The research project follows an interdisciplinary approach by taking a holistic view on watershed and forest functioning, assembling inter-​ and transdisciplinary scholars, geologists, geomorphologists, hydrologists, ecologists, economists and policy analysts.

The project is divided into five working packages:

1. Science Integration

Integrate science across the disciplines involved in this project, securing a truly holistic approach throughout the project and a synthesis of results into joint outputs for the advancement of science;

2. Participatory Scenario Process
Through a participatory scenario development and assessment process, create alternative policy and management options for delivering resilient ecosystems and meeting societal and ecological needs in Alpine regions;

3. Sediment production and transfer
Assess the effects of current management practices on sediment delivery and runoff, and contrast this with less engineered alternatives;

4. Exploring the hydrological and ecological consequences
Explore how changes in vegetation cover influence the sediment cascade and channel stability, and quantify the relative importance of climate change vs. forest management practices on sediment transfer;

5. Values of nature and environmental policy
Analyse the economic and non-​economic values of nature-​based solutions on societal preferences, then develop policy and management options and assess the distribution of burdens and benefits.

 

The Eawag research group is responsible for the work packages 1 and 5, i.e. “Science Integration” and “Values of nature and environmental policy”.

Work Package 1 (Science Integration) pursues three main goals:

1. Integrating across different disciplines involved in the project to ensure a collaborative and integrative approach throughout the project, by jointly developing suitable boundary concepts, methods and tools that allow team members to engage in crossing disciplinary boundaries.

2. Generating practice-oriented synthesis products tailored to the specific knowledge needs of intended audiences, linking and relating systems-, target-, and transformation knowledge provided by different work packages.

3. Ensuring regular reflection among team members on inter- and transdisciplinarity in both theory and practice, analyzing challenges and opportunities of integration experienced within the project at cognitive, social and emotional level.

Contact

Dr. Sabine Hoffmann Group Leader, Group: ITD Tel. +41 58 765 6818 Send Mail
Dr. Ivana Logar Group Leader, Group: EnvEco Tel. +41 58 765 5504 Send Mail

Information

Funding: Swiss National Science Foundation (SNSF) as part of the program Sinergia – interdisciplinary, collaborative and breakthrough

Duration: 2022 to 2026

The project is led by the ETH Zürich NARP research group.

Publications

Extbase Variable Dump
array(2 items)
   publications => '33938,34130,34096' (17 chars)
   libraryUrl => '' (0 chars)
Extbase Variable Dump
array(3 items)
   0 => Snowflake\Publications\Domain\Model\Publicationprototypepersistent entity (uid=33938, pid=124)
      originalId => protected33938 (integer)
      authors => protected'Hofmann, B.; Salomon, H.; Hoffmann, S.' (53 chars)
      title => protected'Roles of researchers in inter- and transdisciplinary sustainability research
         : a reflection tool
' (95 chars) journal => protected'Sustainability Science' (22 chars) year => protected2025 (integer) volume => protected20 (integer) issue => protected'' (0 chars) startpage => protected'777' (3 chars) otherpage => protected'792' (3 chars) categories => protected'roles of researchers; tool; inter- and transdisciplinary research; sustainab
         ility science; operationalization; reflection
' (121 chars) description => protected'Inter- and transdisciplinary (ITD) research is increasingly called for and s
         upported to promote sustainable transformation through knowledge co-producti
         on, knowledge integration, and solution development. The paper explores what
          is needed to support researchers in reflecting on their new roles in ITD re
         search. We introduce a reflection tool that makes the growing literature on
         researchers’ roles in sustainability science applicable to ITD projects. I
         ts design is based on the arguments that each researcher can have several ro
         les within one research project and that focusing on a few key roles increa
         ses clarity compared to differentiating many specialized roles. The tool con
         sists of (1) a researcher survey that operationalizes six prominent roles (t
         raditional scientist, self-reflexive scientist, knowledge integrator, knowle
         dge broker, process facilitator, and change agent), (2) a visualization of r
         ole profiles from the survey, and (3) a set of reflection questions on relat
         ed opportunities, challenges, and coping strategies on individual and projec
         t level. We empirically applied the tool in two ITD research projects focuse
         d on sustainable food production and water and forest ecosystem management.
         Comparative application of the tool yielded diverse role profiles of researc
         hers in both projects, with different patterns for senior and junior researc
         hers as well as natural and social scientists. The reflection produced a col
         lection of opportunities, challenges, and coping strategies that corroborate
         s and extends insights from ITD literature. We discuss how the tool triggers
          multi-dimensional reflection on roles (individual and project level, role c
         ombinations, self-perception and external perception) and outline opportunit
         ies for further strengthening such reflection in ITD research.
' (1810 chars) serialnumber => protected'1862-4065' (9 chars) doi => protected'10.1007/s11625-024-01619-x' (26 chars) uid => protected33938 (integer) _localizedUid => protected33938 (integer)modified _languageUid => protectedNULL _versionedUid => protected33938 (integer)modified pid => protected124 (integer)
1 => Snowflake\Publications\Domain\Model\Publicationprototypepersistent entity (uid=34130, pid=124) originalId => protected34130 (integer) authors => protected'Lieberherr, E.; Dölker, J.; Salomon, H.; Schick, V.; Lo
         gar, I.; Bugmann, H.; Schlunegger, F.; König, L.; Kräh
         enbühl, J.; McArdell, B.; Molnar, P.; Schmidt, C.; Quat
         rini, S.; Zabel, A.; Zhang, J.; Hoffmann, S.
' (292 chars) title => protected'Science integration and a participatory scenario process. An inter- and tran
         sdisciplinary study from the Alps
' (109 chars) journal => protected'GAIA: Ecological Perspectives for Science and Society' (53 chars) year => protected2025 (integer) volume => protected34 (integer) issue => protected'1' (1 chars) startpage => protected'35' (2 chars) otherpage => protected'41' (2 chars) categories => protected'Alpine ecosystems; design report; inter- and transdisciplinary research; par
         ticipatory scenario process; science integration; stakeholder engagement; tr
         ansformation
' (164 chars) description => protected'Highly engineered Alpine watersheds and forests face growing risks, requirin
         g shifts in management and research. We use science integration and a partic
         ipatory scenario process to integrate disciplines and co-create knowledge wi
         th stakeholders. We thus develop pathways for rethinking future management,
         aiming for higher resilience of Alpine ecosystems and delivering greater soc
         ietal value than current systems.<br /><br />Given highly engineered Alpine
         ecosystems with monocultures and channelized streams, this project proposes
         radical changes to enable increased ecosystem resilience and societal wellbe
         ing. We propose to rethink 1. management by including ecological and socio-e
         conomic aspects and 2. research by integrating natural, engineering, and soc
         ial sciences. In this inter- and transdisciplinary project, we develop quali
         tative scenarios as storylines for future Alpine watershed and forest manage
         ment. These scenarios serve as parameters for, on the one hand, the biophysi
         cal modelling of ecological quality (biodiversity, ecosystem function, ecolo
         gical integrity) in Swiss case study regions. On the other, we assess reside
         nts’ preferences for the scenarios in relation to Nature’s Contributions
          to People and aspects of justice. We thus use science integration and a par
         ticipatory scenario process to enable integration across disciplines as well
          as co-create knowledge with stakeholders throughout the research process. W
         hile this approach facilitates working across disciplinary boundaries and in
         cludes stakeholders from the onset, it also comes with challenges: finding a
          common language across disciplines and engaging meaningfully with stakehold
         ers takes time and simultaneously does not cater to the traditional metrics
         in academia.
' (1760 chars) serialnumber => protected'0940-5550' (9 chars) doi => protected'10.14512/gaia.34.1.4' (20 chars) uid => protected34130 (integer) _localizedUid => protected34130 (integer)modified _languageUid => protectedNULL _versionedUid => protected34130 (integer)modified pid => protected124 (integer)
2 => Snowflake\Publications\Domain\Model\Publicationprototypepersistent entity (uid=34096, pid=124) originalId => protected34096 (integer) authors => protected'Hofmann,&nbsp;B.; Fischer,&nbsp;M.; Ingold,&nbsp;K.; Lieberherr,&nbsp;E.; Ho
         ffmann,&nbsp;S.
' (91 chars) title => protected'Knowledge cumulation at science‐policy interfaces: opportunities for envir
         onmental governance research
' (104 chars) journal => protected'Environmental Policy and Governance' (35 chars) year => protected2025 (integer) volume => protected35 (integer) issue => protected'3' (1 chars) startpage => protected'538' (3 chars) otherpage => protected'546' (3 chars) categories => protected'environmental governance; environmental policy; knowledge cumulation; knowle
         dge integration; knowledge use; science-policy interfaces; synthesis
' (144 chars) description => protected'To increase the societal impact of environmental governance research, schola
         rs have called for knowledge cumulation, meaning that scientific evidence bu
         ilds more systematically on previous findings. Our article develops the pers
         pective that such knowledge cumulation takes place not only within academia
         but also at science-policy interfaces (SPIs). Drawing on literature on knowl
         edge integration, synthesis, and use as well as science-policy literature, w
         e outline five opportunities for knowledge cumulation at SPIs: (1) proximity
          to democratic discourse and decision-making; (2) suitability for inter- and
          transdisciplinary integration; (3) combined problem and solution focus; (4)
          potential to increase the generality of scientific findings; and (5) creati
         on of targeted synthesis products. We illustrate their respective benefits a
         nd challenges with empirical examples from SPIs for climate change, biodiver
         sity and natural resources, and food systems. We conclude that SPIs are an i
         mportant locus for cumulating knowledge used in complex environmental govern
         ance and that future research could explore how this interacts with knowledg
         e cumulation in the academic realm.
' (1175 chars) serialnumber => protected'1756-932X' (9 chars) doi => protected'10.1002/eet.2155' (16 chars) uid => protected34096 (integer) _localizedUid => protected34096 (integer)modified _languageUid => protectedNULL _versionedUid => protected34096 (integer)modified pid => protected124 (integer)
Hofmann, B.; Salomon, H.; Hoffmann, S. (2025) Roles of researchers in inter- and transdisciplinary sustainability research: a reflection tool, Sustainability Science, 20, 777-792, doi:10.1007/s11625-024-01619-x, Institutional Repository
Lieberherr, E.; Dölker, J.; Salomon, H.; Schick, V.; Logar, I.; Bugmann, H.; Schlunegger, F.; König, L.; Krähenbühl, J.; McArdell, B.; Molnar, P.; Schmidt, C.; Quatrini, S.; Zabel, A.; Zhang, J.; Hoffmann, S. (2025) Science integration and a participatory scenario process. An inter- and transdisciplinary study from the Alps, GAIA: Ecological Perspectives for Science and Society, 34(1), 35-41, doi:10.14512/gaia.34.1.4, Institutional Repository
Hofmann, B.; Fischer, M.; Ingold, K.; Lieberherr, E.; Hoffmann, S. (2025) Knowledge cumulation at science‐policy interfaces: opportunities for environmental governance research, Environmental Policy and Governance, 35(3), 538-546, doi:10.1002/eet.2155, Institutional Repository

Team

Dr. Sabine Hoffmann Group Leader, Group: ITD Tel. +41 58 765 6818 Send Mail
Dr. Ivana Logar Group Leader, Group: EnvEco Tel. +41 58 765 5504 Send Mail
Hanna Salomon PhD Student, Group: ITD Tel. +41 58 765 5187 Send Mail
Julie Dölker PhD Student, Group: EnvEco Tel. +41 58 765 6414 Send Mail