Citizens prefer landscapes that combine nature with built infrastructure

A pioneering study analyses the photographs shared by citizens in social networks to evaluate the aesthetic consideration of natural landscapes.

Co-managed small-scale fisheries lead to social and ecological improvements

The co-management model of small groups of fishermen contributes to a greater abundance and habitats of species.

ICTA-UAB to design participative and concurred forest fire prevention strategies for the Montseny region

Scientists from the Institute for Environmental Science and Technology of the Universitat Autònoma de Barcelona (ICTA-UAB) aim to design prevention strategies for forest fires occurring in the Montseny Biosphere Reserve through a citizen participation process.

Nace El Observatorio del Besòs: un proyecto de seguimiento de la calidad de los sistemas fluviales de la cuenca

La Universitat Autònoma de Barcelona (UAB) a través del Institut de Ciència i Tecnologia Ambientals (ICTA-UAB), y el Consorci Besòs Tordera evaluarán el estado de calidad a largo plazo de la cuenca del Besòs gracias a la creación de la Observatorio del Besòs.

Shift in large-scale Atlantic circulation causes lower-oxygen water to invade Canada's Gulf of St. Lawrence

The Gulf of St. Lawrence has warmed and lost oxygen faster than almost anywhere else in the global oceans.

Climate Change Modifies the Composition of Reefs

Corals devastated by climate change are being replaced naturally by other species such as gorgonians, which are less efficient in acting as a carbon sink.

ICTA-UAB launches the first master’s Degree in “Political Ecology. Degrowth and Environmental Justice”

The Institute of Environmental Science and Technology (ICTA-UAB) launches the master’s Degree in “Political Ecology.

Pioneering study analyses the effects of forests on human health

A group of volunteers have participated in an experimental study conducted by the ICTA-UAB to analyse the potential health benefits of forests.

Marine Litter on Mediterranean Beaches Triples in Summer

The Institute of Environmental Science and Technology of the Universitat Autònoma de Barcelona (ICTA-UAB) analyses and quantifies the waste generated by tourists in eight islands of the Mediterranean as part of the European BLUEISLANDS project.

Mapping the Urban Vitality of Barcelona

Researchers at the UAB have mapped Barcelona and and 9 surrounding towns using a new methodology based on urbanism activist Jane Jacobs' ideas on how cities should be configured to become vital spaces: 25% of the area is classified as having high vitality.

Agricultural intensification not a “blueprint” for sustainable development

Social and ecological results of increased agricultural intensification are not as positive as expected.

Green urban planning must consider social equity criteria

Cities that do not include social equity criteria into their political strategies to make their urban environment greener and more ecological will not achieve long-term sustainability and risk creating green enclaves only for the social elite.

The ICTA-UAB alerts of a new invasive Asian beetle pest in Catalonia that kills mulberry trees

A study by researcher of the ICTA-UAB and the Department of Agriculture Víctor Sarto i Monteys has identified in the province of Barcelona the presence of a species from Asia that could spread through Europe.

More than 120 ICTA-UAB researchers addressed environmental challenges at a symposium, especially those arising from global and...

The Institut of Environmental Science and Technology of the Universitat Autònoma de Barcelona (ICTA-UAB) organized its 1st Spring Symposium with the aim of addressing some of the main environmental and sustainability challenges.

Low-carbon energy transition requires more renewables than previously thought

A new study by ICTA-UAB analyzes the impacts on lifestyles of substituting fossil fuels for cleaner energies.

Are Farmers Who Belong to Local User Associations Better Adapted to Climate Change?

Droughts, floods and high temperatures derived from climate change are not the only threats that farmers with irrigated crops must face.

Climate Change Threatens World's Largest Seagrass Carbon Stores

Shark Bay seagrass carbon storage hotspot suffers alarming losses after a devastating marine heat wave, according to a study led by ICTA-UAB researchers.

Amazon's indigenous people hunt animals feeding in areas contaminated by oil spills

A study by the ICTA-UAB and the UAB Department of Animal Health and Anatomy demonstrates that the main species hunted by the indigenous popoulations of the Peruvian Amazon ingest water and soil contaminated with hidrocarbons and heavy metals.

The new Planttes app warns of allergy risks in different urban areas

The Planttes application is a citizen science project which aims to encourage people to identify and locate on a map the existence of allergy-causing plants and indicate their phenological state.

New Project to Link Extreme Weather Events, Atmospheric Biodiversity and Human Health

A new ICTA-UAB project led by researcher Jordina Belmonte will study the effects of extreme meteorological events on the biological biodiversity present in the atmosphere in order to predict changes in the environment and possible affectations on human health.

ICTA-UAB’s success: five ERC grants in two years

The Institute of Environmental Science and Technology of the Universitat Autònoma de Barcelona (ICTA-UAB) has been awarded five European Research Council (ERC) grants in two years, which is about ten per cent of all ERC grants arriving in Catalonia over the period from the end of 2015 to the end of 2017.

New ICTA-UAB 'Welcome Guide'

The new ICTA-UAB 'Welcome Guide' it is at your disposal now. With this document, we aim to help you discover the basics of the PhD programme, ICTA-UAB’s structure, etc.
Co-managed small-scale fisheries lead to social and ecological improvements

Date: 2018-10-31


The co-management model of small groups of fishermen contributes to a greater abundance and habitats of species.

The co-management of small-scale fisheries by the fishermen themselves and the government leads to better ecological and social outcomes than the current centralized management model by governments. This is the result of a study carried out by researchers from the Institute of Environmental Science and Technology of the Universitat Autònoma de Barcelona (ICTA-UAB) which shows the advantages of this management model, but also points out possible improvements.

Small-scale fisheries are an important source of livelihoods for many coastal communities, but they are facing growing threats such as overfishing, competition with industrial fleets, water pollution and destruction of fish habitats. As a response to these threats, the co-management of this type of fisheries is increasingly gaining support as an alternative to centralized management, in which governments manage natural resources collaboratively with local users and other stakeholders, such as researchers and NGOs.

The study, published in the journal Global Environmental Change, highlights that when small-scale fishing communities participate in decision-making processes, it increases the abundance and habitat of the species, as well as fish catches, actors’ participation and the fishery’s adaptive capacity, inducing processes of social learning. "Artisanal fisheries do not carry the same weight as industrial fisheries in terms of global economic data, but the real economic value for families is immense," says ICTA-UAB researcher Laia d'Armengol, who points out that "the management model of industrial fisheries is not applicable to artisanal fisheries because the dynamics are different".

The study carried out a systematic review of the scientific literature in order to evaluate the results obtained by co-managed small-scale fisheries and to analyse which variables affect those results. For this, the framework of analysis of the social-ecological system by E. Ostrom was adapted with specific variables of the artisanal fisheries and of the adaptive management, in order to understand how the context and the fisheries’ characteristics influence the 91 co-management cases analysed.

According to the results, the co-managed fisheries are usually coastal, multi-species and do not have property rights, which are defined and clarified during the co-management process. A legal and institutional framework, as well as a context of decentralization of natural resources, enables the emergence of co-management. Most co-management initiatives are very recent, less than 10 years old, and have an organization that leads and facilitates the process. In most cases, government and users have the same decision power, or users are more empowered and half of them include additional organizations. Most of the initiatives analysed have adopted one or more adaptive management characteristics.

Co-management has mostly positive social and ecological outcomes. A total of 76% of the reviewed cases indicate positive results, while 17% indicate mixed results and 7% negative results. In the ecological field, co-management contributes to a greater abundance and habitats of the species. At the social level, co-management contributes to greater social participation, better congruence between management standards and local conditions, and compliance with standards, and induces social learning processes. Co-management also has an economic impact since it increases catches and incomes from fishing. Lastly, the adaptive capacity of the fishery is increased, that is, the fishery is better prepared to withstand unforeseen events and social and ecological changes.

The most important characteristic favouring the success of co-management initiatives is social diversity, involving a diversity of actors that represents all existing interests. Likewise, involving actors with different socio-economic levels favours the improvement of compliance with rules. The presence of industrial fishing is associated with negative impacts on fish stocks and less cooperation between actors. On the contrary, when there is a presence of artisanal fishing, the legitimacy of the rules increases. When illegal fishing is present, co-management improves the ecological condition of the fishery. Finally, an adaptive management approach increases the adaptive capacity of the fishery, prevents conflicts from growing and prevents new conflicts from emerging.

The results indicate that it is necessary to promote co-management initiatives fostering social diversity, with participating organizations that represent different interests and socio-economic levels. These organizations should adopt adaptive management practices, such as the integration of different knowledge systems, institutional flexibility that allow quick responses to environmental change or experimental and innovative practices. If industrial fishers participate in fishery, they should be involved in co-management decision making in order to ensure their performance under the same governance mechanism and regulation than small-scale fishermen.

The reviewed case studies rarely analyse the co-management impact on new or existing social conflicts, power inequalities and equity. However, studies that do examine these issues suggest that conflicts and power inequalities are reduced only when co-management replaces a previous system of centralized government management and not when it replaces community management schemes. According to the researchers, it is a priority that future research on artisanal fisheries analyse the impact of co-management on conflicts, power asymmetries and equity, and investigate the effect of replacing centralized or community management systems.

d’Armengol L., Prieto Castillo M., Ruiz-Mallén I., Corbera E. (2018). "A systematic review of co-managed small-scale fisheries: Social diversity and adaptive management improve outcomes". Global Environmental Change.

ICTA's Activities