Biodiversity Conservation
The Neotropics contain the most biologically diverse freshwater ecosystems on Earth and millions of people depend on their services, including clean water, fisheries and recreation. Aquatic biodiversity conservation in this region is hindered by many major knowledge gaps. At the most basic level, hundreds of Neotropical fish species remain undescribed and few guides exist to confidently identify named species. We also have little knowledge of the range boundaries or distributions of most fish species, let alone how they interact to contribute to ecosystem function. Neotropical rivers have historically received less conservation and research attention than forests that surround them, yet they are being rapidly degraded by combinations of threats including hydroelectric dams, gold mining, overfishing, deforestation, and urban and agricultural pollution. My research seeks to inventory aquatic biodiversity, discover and describe new species, create clear, concise species identification guides, and map ecological interrelationships – particularly among species that serve as the foundation of Neotropical river food webs. I list below a subset of recent relevant publications.
Belo Monte Dam construction, Xingu River, Brazil
Gold mining dredge, Kuribrong River, Guyana
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Thomson, S.A., R.L. Pyle, S. Ahyong, and 181 signatories. 2018. Taxonomy based on science is necessary for global conservation. PLoS Biology 16:e2005075. [Interview conducted with UTSC; ROM blog post; Danish museum blog]
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Winemiller, K.O., P. McIntyre, L. Castello, E. Fluet-Chouinard, T. Giarrizzo, S. Nam, I.G. Baird, W. Darwall, N.K. Lujan, I. Harrison, M.L.J. Stiassny, R.A.M. Silvano, D.B. Fitzgerald, F.M. Pelicice, A.A. Agostinho, L.C. Gomes, J.S. Albert, E. Baran, M. Petrere Jr., C. Zarfle, M. Mulligan, J.P. Sullivan, C. Arantes, L.M. Sousa, A.A. Koning, D.J. Hoeinghaus, M. Sabaj, J.G. Lundberg, J. Armbruster, M.L. Thieme, P. Petry, J. Zuanon, G. Torrente Vilara, J. Snoeks, C. Ou, W. Rainboth, C.S. Pavanelli, A. Akama, A. van Soesbergan and L. Sáenz. 2016. Balancing hydropower and biodiversity in the Amazon, Congo, and Mekong: Basin-scale planning is needed to minimize impacts in mega-diverse rivers. Science 351:128–129. [covered by Huffington Post, ScienceDaily, and The Freshwater Blog].
Fig. 1 from Winemiller et al., 2016. Maps of proposed, under construction and operational dams in the Amazon, Congo and Mekong drainage basins, combined with biodiversity estimates for each basin and select sub-basins.