BackgroundThe shifting baseline syndrome is a concept from ecology that can be analyzed in the context of ethnobotanical research. Evidence of shifting baseline syndrome can be found in studies dealing with intracultural variation of knowledge, when knowledge from different generations is compared and combined with information about changes in the environment and/or natural resources.MethodsWe reviewed 84 studies published between 1993 and 2012 that made comparisons of ethnobotanical knowledge according to different age classes. After analyzing these studies for evidence of the shifting baseline syndrome (lower knowledge levels in younger generations and mention of declining abundance of local natural resources), we searched within these studies for the use of the expressions “cultural erosion”, “loss of knowledge”, or “acculturation”.ResultsThe studies focused on different groups of plants (e.g. medicinal plants, foods, plants used for general purposes, or the uses of specific important species). More than half of all 84 studies (57%) mentioned a concern towards cultural erosion or knowledge loss; 54% of the studies showed evidence of the shifting baseline syndrome; and 37% of the studies did not provide any evidence of shifting baselines (intergenerational knowledge differences but no information available about the abundance of natural resources).Discussion and conclusionsThe general perception of knowledge loss among young people when comparing ethnobotanical repertoires among different age groups should be analyzed with caution. Changes in the landscape or in the abundance of plant resources may be associated with changes in ethnobotanical repertoires held by people of different age groups. Also, the relationship between the availability of resources and current plant use practices rely on a complexity of factors. Fluctuations in these variables can cause changes in the reference (baseline) of different generations and consequently be responsible for differences in intergenerational knowledge. Unraveling the complexity of changes in local knowledge systems in relation to environmental changes will allow the identification of more meaningful information for resource conservation.

HIGHLIGHTS• The Anthropocene compels unlocking of ocean-related network capabilities.• Orchestration of local, regional, and global knowledge networks can augment transformative capacity.• Transdisciplinary network diagnostics are promising social learning tools.• Strategic advice for transformational research in ocean territories are provided. This paper dedicates to understanding of what is needed to achieve the transformation of ocean governance. Based on the theory of transformative agency conceptualized in a multi-level governance context, we build on recent novel inter-and transdisciplinary research in Brazil to explore the opportunities for transformation in the dynamic, complex, and multi-level field of ocean governance. We focus this analysis on three transformation processes toward developing a socially and ecologically coherent marine protected area network as the core of a marine spatial planning process for enhanced ecosystem-based polycentric governance of the country's Exclusive Economic Zone. The findings illuminate leverage points for achieving (much needed) transformation in Brazilian ocean governance and potentially beyond. These include: connecting transformative actions into coherent narratives and testing strategic advice derived from theories of transformative agency to promote regime shifts in ocean governance systems; setting of more ambitious social mobilization targets; fostering orchestration of knowledge-networks considering multiple issues, territorial and institutional levels; implementing institutional learning experiments; supporting transformational trajectories toward co-evolutionary, polycentric, ecosystem-and area-based ocean governance systems; and pursuing gradual, incremental structural understanding of Gerhardinger et al. Healing the Blue Amazon with Knowledge-Action Networks a given knowledge network field as a major driver of catalyzing transformative change. Hereby, this article advances understanding of how to better navigate the transformation toward enhanced sustainability in an important part of the Atlantic and hence of our global ocean.

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This research investigates local ecological knowledge of fishers in communities along a latitudinal gradient in the coast of the Santa Catarina State, regarding the life cycle of mullets Mugil liza (migration, feeding, and reproductive behavior). Our sampling encompassed eight Santa Catarina coastal cities (nine artisanal fishing sites) and engaged 45 key informants (28- 86 years of age) through semi-structured interviews from August/2011 to March/2012. This fish species feeds and grows in lagoon and estuarine systems, migrating to the sea for reproduction, and spawning. Fishers acknowledged the Patos Lagoon and the Plata River as the main source of mullet schools. Migration occurs from South to North and the routes vary according to climatic and oceanographic conditions (e.g., low temperatures, south winds, rainfall, currents, salinity). These conditions influence the abundance of mullets (and therefore fisheries success), their migration and stops in locations such as beaches, rocky shores, and islands. According to fishers, mullet spawning occurs throughout the coast of the Santa Catarina State and they feed in lagoons and riverine systems but also out at sea during migration. In conclusion, fishers possess a detailed knowledge about mullet life cycle and they identify intra and interannual variations in migration routes, a pattern that should be considered in managing the fishery.