No-take marine reserves can be powerful management tools, but only if they are well designed and effectively managed. We review how ecological guidelines for improving marine reserve design can be adapted based on an area's unique evolutionary, oceanic, and ecological characteristics in the Gulf of California, Mexico. We provide ecological guidelines to maximize benefits for fisheries management, biodiversity conservation and climate change adaptation. These guidelines include: representing 30% of each major habitat (and multiple examples of each) in marine reserves within each of three biogeographic subregions; protecting critical areas in the life cycle of focal species (spawning and nursery areas) and sites with unique biodiversity; and establishing reserves in areas where local threats can be managed effectively. Given that strong, asymmetric oceanic currents reverse direction twice a year, to maximize 123Rev Fish Biol Fisheries (2018) 28:749-776 https://doi.org/10.1007/s11160-018-9529-y( 0123456789().,-volV) (0123456789().,-volV)

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This paper is dedicated to the memory of Miguel Fernando Lavín (1951, a pioneer of the PANGAS initiative who dedicated his life to advance the field of oceanography in Mexico. He was a visionary who connected oceanographers, marine conservationists, and fisheries managers. IntroductIonSmall-scale fisheries contribute about half of global fish catches, or two-thirds when considering catches destined for direct human consumption (FAO 2014). Small-scale fisheries play an important role in food security and nutrition, poverty alleviation, equitable development, and sustainable use of natural resources, providing nutritious food for local, national, and international markets. More than 90% of the world's fishers and fish workers (those who work in pre-harvest, harvest, and post-harvest activities, including trade) are employed by small-scale endeavors that underpin local economies in coastal, lakeshore, and riparian ecosystems. This, in turn, generates multiplier economic effects in other sectors (FAO 2014). These activities may be a recurrent sideline undertaking or become especially important in times of financial difficulty. Small-scale fisheries represent a diverse and dynamic sector, often

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