Mapping biases, gaps, and trends in climate-change research on Brazilian biodiversity
Abstract
Abstract Brazil hosts exceptional biodiversity, but research on climate-change impacts is unevenly distributed across biomes, taxonomic groups, and regions. We characterized a deliberately bounded corpus of peer-reviewed literature retrieved from the Web of Science (1945–2023) using a Topic search combining “climate change,” “global change,” or “global warming” with “biodiversity” and “Brazil.” After screening 633 records, 111 articles met the inclusion criteria for coding. We extracted bibliometric metadata and classified studies by biome, Brazilian region, taxonomic group, climatic and ecological dimensions, co-occurring pressures, and reported effects. Within this corpus , publication output increased sharply after 2010 and concentrated in the Atlantic Forest and the Southeast and Northeast regions; plants, insects, and other invertebrates were represented more frequently than reptiles, amphibians, and fish. Reported effects were predominantly negative. Generalized linear mixed models identified marked differences in publication counts among biomes, regions, and taxonomic groups. These results reveal spatial, taxonomic, institutional, and thematic asymmetries in the retrieved evidence base, while also showing an unusually strong representation of insects and other invertebrates relative to broader conservation-literature patterns. We identify priorities for broader evidence coverage, particularly for underrepresented biomes, aquatic systems, and taxa, and discuss…
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