Washington D.C.


Profile picture of Neil CoxNeil Cox
Manager, Biodiversity Assessment Unit

Neil Cox is the Manager of the Biodiversity Assessment Unit, a joint initiative of the IUCN Species Survival Commission and Conservation International's Center for Applied Biodiversity Science based in Washington, DC. At present, his primary focus is the Global Amphibian Assessment, a comprehensive review of the conservation status for each of the world’s 5,500 amphibian species.

Before joining IUCN, Neil was a Programme Officer for the UNEP-World Conservation Monitoring Centre (Cambridge, UK). At UNEP-WCMC, Neil worked on a wide range of global and regional biodiversity related issues including conservation assessments, species trade (CITES) and biodiversity indicators. Neil has been associated with the IUCN Red List, since 1994, in a variety of capacities including species assessment and data collection and management.


Philip BowlesPhilip Bowles
Programme Officer

Philip Bowles joined the Biodiversity Assessment Unit (BAU) in 2010, first with Conservation International and, since 2012, as an IUCN employee. Since 2011 he has also been the Coordinator of IUCN’s Snake and Lizard Red List Authority.

Phil works as a Programme Officer, organising and providing support for the BAU’s Red List assessments, with a particular focus on the ongoing Global Reptile Assessment. In this capacity he is the primary point of contact for IUCN’s snake and lizard assessments and responsible for liaising with IUCN’s reptile-themed Species Specialist Groups.

Phil came to IUCN having completed Masters degrees in tropical ecology (James Cook University) and in taxonomy (Imperial College), including ecological research focusing on amphibians in Thailand and insects in the UK. He is an enthusiastic herpetologist, with field experience working with amphibians and reptiles in Australia, Southeast Asia and Madagascar. Phil is a keen photographer, and a number of his photographs of reptiles and amphibians have been included in the IUCN Red List.


Profile picture of Marcelo TognelliMarcelo Tognelli
Programme Officer

Marcelo joined the Biodiversity Assessment Unit in 2009, where he provides support to ongoing global assessment initiatives and synthesize, manage, and analyze species conservation data. He has participated in numerous Red List assessment workshops around the world for different taxonomic groups.  As a certified Red List trainer, he has provided training workshops throughout Latin America. Marcelo is coordinating the freshwater biodiversity assessment in Latin America and is also involved in the assessments of crop wild relatives in the Americas. He has also facilitated workshops to identify and delineate Key Biodiversity Areas.

Marcelo received his Bachelor’s degree in Biology from the Universidad Nacional de Córdoba in his native Argentina, and his Ph. D. in Ecology from the University of California, Davis. After completing his graduate studies, Marcelo was involved in conservation planning research in Chile, both in the terrestrial and marine realms. He has also conducted research in Argentina combining species distribution modeling and conservation planning to identify conservation priority areas for several groups of species. Prior to joining IUCN, Marcelo worked at the University of California in Davis reviewing and selecting environmental and socio-economic indicators in two watersheds in Northern California.

To contact Marcelo, please email him at [email protected]


Jing Zhang
Junior Professional Associate

Jing is originally from China. He joined the Biodiversity Assessment Unit in 2017 after graduating from University of Miami with a Master degree in Marine Science and Conservation. He provided various supports for the ongoing global reptiles assessments, including preparation and finalization of Red List assessments for species in Southeast Asia, Australia, and South America. Additionally, he represented BAU to initiate collaborations with the Chinese Academy of Sciences to conduct Red List Assessments on Chinese lizard species and raised funds to hold the Red List workshop.

Prior to his work at IUCN, Jing interned at the United Nations Environment Programme's (UNEP) headquarters in Nairobi, Kenya for eight months and conducted fieldwork in Central Amereica, Great Mekong, China, and East Africa. He is passionate about integrating science and policy into conservation practices. His expertise includes marine debris conservation, citizen science, and biodiversity assessment. Out of the office, Jin is an amateur photographer, excellent cook, and outdoor enthusiast. 

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