Independent Researcher
Cactaceae
Curator of the Herbarium - University of Florida
Cactaceae
Research Botanist - Desert Botanical Garden
Cactaceae, Asparagaceae
Curator of Living Collections, Research Botanist - Desert Botanical Garden
Cactaceae, Asparagaceae
Head - IUCN Red List Unit
Old World succulents: Aizoaceae, Apocynaceae, Asphodelaceae, Asteraceae, Crassulaceae and Euphorbiaceae
Researcher - Desert Botanical Garden, The University of Arizona
Cactaceae
Director of Conservation - Botanic Gardens Conservation International
Professor and researcher - Museum of Natural History - San Marcos University
Cactaceae of Peru
Researcher - University of Havana
Cactaceae of Cuba
Researcher - University of Florida
Cactaceae of Hispaniola
Biological Sciences Doctorate Director - University of Concepción
Cactaceae of Chile
Researcher - Northwest Biological Research Center
Cactaceae of the Baja California peninsula
Curator of the Herbarium - University of Florida
Cactaceae of the Caribbean
Professor - National Autonomous University of Mexico
Asparagaceae
Researcher - National Autonomous University of Mexico
Cactaceae
Professor - Federal University of Rio Grande do Norte
Cactaceae
Botanist - The Institute of Jamaica
Cactaceae
Researcher - National Autonomous University of Mexico
Ethnobotany and sustainable management
Horticulturist - Mondocactus
Cactaceae
Researcher - Museum of Natural History of El Salvador
Cactaceae
Researcher - University of Texas at Austin
Asparagaceae
Professor - University of Saskatchewan
Cactaceae
Professor - National University of Catamarca
Cactaceae
Conservation Biologist - Desert Botanical Garden
Cactaceae
Wildlife Ecology Manager - Prince Mohammed bin Salman Royal Reserve
Asparagaceae - Dracaena
Researcher - National Polytechnic Institute
Asparagaceae and Cactaceae of northern Mexico
Researcher - National University of Cordoba
Cactaceae
Researcher - Desert Botanical Garden
Cactaceae
Researcher - National Autonomous University of Mexico
Cactaceae
Researcher - Federal University of São Carlos
Cactaceae
Consultant - Austroflora
Cactaceae
Professor - University of Bayreuth
Apocynaceae
Professor - University of Alabama
Illegal trade
Chief Science Officer - Desert Botanical Garden
Cactaceae
Researcher - German Federal Agency for Nature Conservation
Cactaceae
Researcher - Venezuelan Institute for Scientific Research
Cactaceae
Researcher - Czech Academy of Sciences
Invasive species
Researcher - National University of Rosario
Cactaceae
Biodiversity Consultant
Conservation biology
Researcher - University of Concepción
Cactaceae
Researcher - Council for Agriculture Research and Economics
Cactaceae
Professor - University of Palermo
Succulents
Researcher - University of Otago
Cactaceae
Herbarium Curator, Research Botanist - Desert Botanical Garden
Cactaceae, Asparagaceae
Director - Cadereyta Regional Botanical Garden
Cactaceae, Asparagaceae
Global Director - IUCN Biodiversity Conservation Group
Policy
Researcher
Asparagaceae
Professor - National Autonomous University of Mexico
Asparagaceae
Consultant - Coccoloba AgroEnvironmental
Cactaceae
Professor - University of Brasília
Cactaceae
Professor - Autonomous Metropolitan University Iztapalapa Unit
Cactaceae