Lacustrine Urban Blue Spaces: Low Availability and Inequitable Distribution in the Most Populated Cities in Mexico

Lacustrine blue spaces provide benefits to the urbanites and wildlife habitat. Their availability varies depending on the city in which they are established and intra-urban social interactions. We analyzed the presence, distribution, and size of lentic water bodies in Mexico's 145 most populated cities. We searched for patterns in their distribution concerning demographic, socioeconomic, and geographic data, aiming to understand their socio-ecological interactions in cities. We digitized lacustrine spaces to obtain their number per city, total surface, area of blue space per inhabitant, and surface as a percentage of the city's total area. We tested for relationships between their number and surface and city population, hydrological regions, and urban marginalization index through linear and generalized linear models. We delimited 1834 lacustrine blue spaces, finding almost two-thirds of them artificial. Their presence and surface in Mexican cities were generally low, except for hydrological regions close to the Gulf of Mexico. Their number and surface decreased as the urban marginalization index increased. The lack of equitable provision of lacustrine space at the national level has implications for urban planning and land management. Blue spaces should maximize their ecosystem services' provision for the whole society to promote cities' sustainability and resilience.