Publications
Diversity, Endemism, and Biogeography of Island Snakes of the Gulf of California, Mexico
Island area is the primary driver of snake species richness in the Gulf of California, accounting for 57% of variation, while isolation plays a lesser role. The study found no significant difference in species richness between oceanic and land-bridge islands, though islands with endemic snakes tend to be more isolated but not necessarily smaller. Among the 38 snake species identified across 31 islands, only one is globally threatened (Crotalus catalinensis), while six are listed as 'Amenazada' in Mexico. Threats include invasive species, human disturbances, and illegal collection, with conservation efforts such as protected areas, education, and ex situ populations recommended to mitigate these risks. The research highlights the need for further studies on phylogenetic and functional diversity to enhance biodiversity conservation in this region.
The Herpetofauna of the Insular Systems of Mexico
Mexico's insular systems, covering just 0.26% of its territory, host 226 herpetofaunal species—16.1% of the country's total—with the Gulf of California region exhibiting the highest biodiversity (108 species). A comparative analysis using the Environmental Vulnerability Score (EVS) revealed that 94 species face high vulnerability, while traditional systems like SEMARNAT and IUCN underestimate threats, particularly for insular endemics. The study identifies climate change, urbanization, and wildfires as primary risks, highlighting the Gulf of California and Tropical Pacific islands as conservation priorities. Notably, Mexico is nearing full federal protection of its insular areas, a significant step toward safeguarding this critical biodiversity.
Why Partner with a Zoo or Garden? Selected Lessons from Seventy Years of Regional Conservation Partnerships at the Arizona-Sonora Desert Museum
Zoos and botanical gardens (ZBGs) are proven versatile partners in regional conservation, as demonstrated by the Arizona-Sonora Desert Museum's 70-year history. These institutions effectively manage ex situ populations of rare species, advocate for protected areas—such as the Gulf of California islands—and convene stakeholders for large-scale initiatives like the Sonoran Desert Conservation Plan. They also contribute long-term field research, including a 40-year phenology database and efforts to designate the Ironwood Forest National Monument. However, sustaining such conservation work poses challenges, highlighting the need for strategic partnerships and resource management.
Dynamic connectivity patterns from an insular marine protected area in the Gulf of California
Dynamic connectivity patterns from San Pedro Mártir Island, a small and isolated marine protected area in the Gulf of California, reveal significant spatial variability over time. Using particle-tracking models based on hydrodynamic data, researchers found that larvae dispersal spans up to 600 km along the coast, with potential ecological and genetic connectivity to distant fishing sites and neighboring Marine Protected Areas (MPAs), though not simultaneously. The study highlights the temporal changes in connectivity, influenced by lunar phases and reproductive cycles of commercial species, suggesting that retention within the island declines from May to June and with longer planktonic durations. These findings underscore the need for adaptive MPA networks that account for dynamic ocean features and match species' reproductive patterns and fisheries behavior.
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