Our mission

Visitors will then have the opportunity to gain a comprehensive overview of the field and its importance on a global scale. The virtual exhibition will continue to provide a valuable resource for learning more about this important research during the second phase of the project. At the same time, the exhibition will continue to grow and map the latest findings and future adaptation strategies based on the most current research.

They were welcomed and introduced to the event by Dr. Cornelia Andersohn, representative of the German Aerospace Center (DLR), Prof. Marie-Catherine Riekhof, coordinator of the Humboldt Tipping project, Edward Barriga, representative of the Peruvian project partner Instituto del Mar de Peru (IMARPE), Prof. Gerardo Damonte, Peruvian project partner of the Group for the Analysis of Development (Grade) and Armando Rosado from the Ministerio de Producción Peru. Prof. Gerardo Damonte moderated the event.

In the morning, relevant scientific results were presented in a compact format. Posters on the different work packages were also shown and the five short films created during the project were presented.

The afternoon was equally dedicated to dialogue and exchange: by means of targeted workshops on 1) Adaptation strategies in a changing world: how models can help us improve management, 2) The future of industrial fisheries in Peru and 3) Governance of artisanal fisheries, there was a lively discussion with all the invited guests from different sectors on the research results, integration into practice and future use of the accumulated know-how of the last four years. Participants discussed new scienetific insights on tipping points in the HUS, on-going challenges and possible future scenarios. The need for more possibilities to exchange in a setting similar to the HT-stakeholder day emerged as one conclusion for a possible way forward.

Despite the great diversity of different actors, and correspondingly different interests, all participants found the event very valuable and purposeful. This was a special characteristic of the event and we want to thank all participants to make this possible.

The first two days of the symposium are dedicated to scientific exchange on the project results. These will be presented internally by the different work packages. Together with the Peruvian partners of IMARPE and GRADE, we will work on future perspectives - How can we carry on the research from 4 years of collaboration within the Humboldt Tipping project even without further funding? In which research lines do we need to invest further? What have we learnt and what have we already been able to implement? Which knowledge gaps do we still need to close in the future?

The third day of the symposium is dedicated to the exchange with the stakeholders. Here, relevant results will be presented in a shorter format. In addition, there will be posters of the various work packages and the five short films produced in the course of the project will be shown.

The afternoon will also be dedicated to dialogue and exchange, with targeted workshops with all invited guests from different industries to discuss the research results, the integration into practice and the future use of the collected know-how from the past four years.

This day will bring together stakeholders from artisanal fisheries and their fishing associations from the north and south of the country, industrial fisheries, NGOs, local politics, the Ministries of Environment and Economy, mariculture associations, the Society for International Cooperation, national parks, schools and educational institutions as well as universities and the tourism sector. The event brings together stakeholders from across the country and from a wide variety of backgrounds and is designed, among other things, to promote dialogue and understanding among and for each other.

The results from the targeted workshops will feed back into research and eventually be able to make a socio-political contribution in the form of policy briefs. Thus, the Final Symposium is a preparation for a project conclusion but at the same time also a look into the future and an important step towards understanding such a globally important system as the Humboldt upwelling area and its sustainable management.

This “seasonal paradox” triggers the following questions: (1) what are the unique characteristics of the Peruvian upwelling system, compared with other EBUSs, that lead to the out-of-phase relationship, and (2) how does the seasonal paradox influence ecosystem functioning? Using observational climatologies for four EBUSs, the authors diagnose that the Peruvian upwelling system is the only one to reveal that intense upwelling coincides with deep mixed layers. They then apply a coupled regional ocean circulation biogeochemical model (CROCO–BioEBUS) to assess how the interplay between mixed layers and upwelling regulates the seasonality of surface chlorophyll in the Peruvian upwelling system. The author´s model reproduces the “seasonal paradox” within 200 km off the Peruvian coast. They confirm previous findings regarding the main contribution of mixed layer depth to the seasonality of chlorophyll, relative to upwelling. Deep mixed layers in austral winter cause vertical dilution of phytoplankton and strong light limitation, impacting growth. The effect of advection, though second-order, is consistent with previous findings for the Peruvian system and other EBUSs, with enhanced offshore export opposing the coastal build-up of biomass. In addition, the authors find that the relatively colder temperatures of upwelled waters slightly dampen phytoplankton productivity and further slow the build-up of phytoplankton biomass. This impact from the combination of deep mixed layers and upwelling propagates through the ecosystem, from primary production to export and export efficiency. The findings emphasize the crucial role of the interplay between mixed layer depth and upwelling and suggest that surface chlorophyll may increase, along with a weakened seasonal paradox, in response to shoaling mixed layers under climate change.

Original publication open access: 

Xue, Tianfei , Frenger, Ivy , Prowe, A. E. Friederike , Jose, Yonss Saranga und Oschlies, Andreas (2022) Mixed layer depth dominates over upwelling in regulating the seasonality of ecosystem functioning in the Peruvian Upwelling System. Open Access Biogeosciences (BG), 19 . pp. 455-475.

DOI 10.5194/bg-19-455-2022.

The article is accessible at the following link: 

https://bg.copernicus.org/articles/19/455/2022/

The book chapter focuses on three marine social-ecological systems to identify weaknesses and leverage points for adaptation and resilience. The findings were that (1) the Peruvian artisanal fishery and aquaculture sectors urgently need an institutional framework for adaptation to future environmental changes; (2) bottom-up adaptation strategies require institutional support, tailored to socio-ecological specificities; and (3) additional research on socio-ecological tipping points and their effects for human-nature interactions and societal repercussions is necessary. These finding may be useful in other systems undergoing similar challenges.

Original publication: 

Romagnoni G., Kluger L., Tam J., Wolff M. 2022. Adaptations to climate variability in fisheries and aquaculture social-ecological systems in the Northern Humboldt Current Ecosystem: challenges and solutions. In: Human-nature interactions. Exploring nature’s values across landscapes. Misiune I., Depellegrin D., Egarter Vigl L. (Eds). Springer Nature. Open access.

DOI:10.1007/978-3-031-01980-7_30

• License: CC BY 4.0

• In book: Human-Nature Interactions (pp.389-403)

• Project: Humboldt Tipping

The whole book is open access and the above mentioned chapter is accessible from the following link: 

https://link.springer.com/chapter/10.1007/978-3-031-01980-7_30

But, climate change, environmental instability and an increasing demand for seafood are putting this system under pressure. Scientists warn that - in the long term - the ocean off the coast of Peru could lose its productivity and richness, as well as its ability to provide services to our society. In the end, the nets of fishers could be left empty and Ceviche, the famous Peruvian national dish, may look completely different.

Find the movie on our youtube channel in a Spanish, English and German version:

https://youtu.be/1bu-jiz1EI8

For further information please contact:

Dr. Frederike Tirre

Center for Ocean and Society

Christian-Albrechts-Universität zu Kiel
Neufeldtstraße 10
24118 Kiel
Germany

ftirre@uv.uni-kiel.de