The Role of Catch Portfolios in Characterizing Species' Economic Linkages and Fishers' Responses to Climate Change Impacts

The collective harvest behavior of fishers, as revealed by their catch portfolios, gives rise to an economic linkage among targeted species. Mapping the connectivity species helps identify that may play a role in fishers’ adaptive capacity climate change impacts. In this study, we used survey data and network analysis map harvested small-scale Galician fishers holding same set fishing permits. We characterized describing roles system connected via four centrality measures: degree, closeness, betweenness, eigenvector. metrics discrete choice framework evaluate relation between fishers' choices under hypothetical impact. particular, asked following question: Which are likely be added portfolio response climate-driven negative impact on returns? responded scenarios adding not central located within clusters diversifying portfolios Our work suggests due deserves serious consideration for practitioners who seek improve institutional arrangements promote resilience fisheries.