ArticleScience advances2019
Unexpected fish diversity gradients in the Amazon basin.
Article in Science advances, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
26 citing papers in PubMed.
- A unified analysis of global riverine eDNA reveals common associations of fish biodiversity with drainage characteristics.Nature ecology & evolution · 2026Article
- Modeling the effects of climate risk on primates globally: New perspectives on conservation priorities.Science advances · 2026Article
- Effect of structural connectivity on the assemblage diversity patterns of central Mexico icthyofauna.Journal of fish biology · 2026Article
- Geological processes shaping freshwater biodiversity: a synthesis of global evidence.Biological reviews of the Cambridge Philosophical Society · 2026Review
- Multiple fish diversity facets in the Nu-Salween basin: Unexpected bimodal patterns, environmental drivers, threats, and conservation implications.Zoological research · 2026Article
- Mid-late Pleistocene evolution of fluvial landscapes in Central Amazonia: Shaping ecosystems and areas of endemism.Science advances · 2026Article
- Incorporating river morphodynamics in the characterization of key ecological system units for conservation in the western Amazon.Scientific reports · 2026Article
- Fishes of the Conambo River Basin, an unexplored area in the Ecuadorian Amazon: first annotated checklist.PeerJ · 2026Article
- Assessing fish diversity in small streams and ponds of the Peruvian Amazon using environmental DNA metabarcoding.ZooKeys · 2026Article
- Article
- Generalist species exhibit more genetic structure in comparison to a habitat specialist: Evidence from a phylogeographic study of two freshwater crabs (Decapoda: Potamonautidae:Ecology and evolution · 2024Article
- Whole genomes show contrasting trends of population size changes and genomic diversity for an Amazonian endemic passerine over the late quaternary.Ecology and evolution · 2024Article
- Geodiversity in the Amazon drainage basin.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2024Review
- Amazonian amphibians: diversity, spatial distribution patterns, conservation and sampling deficits.Biodiversity data journal · 2024Article
- Article
- Integrative use of DNA barcode and morphology reveal high level of diversity in the ornamental fish on the lower Amazon basin.PloS one · 2024Article
- Freshwater fish diversity in the western Amazon basin shaped by Andean uplift since the Late Cretaceous.Nature ecology & evolution · 2023Article
- Landscape dynamics and diversification of the megadiverse South American freshwater fish fauna.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Phylogenetic relationships and evolutionary patterns of the genus Psammolestes Bergroth, 1911 (Hemiptera: Reduviidae: Triatominae).BMC ecology and evolution · 2022Article
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
21 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Using the most comprehensive fish occurrence database, we evaluated the importance of ecological and historical drivers in diversity patterns of subdrainage basins across the Amazon system. Linear models reveal the influence of climatic conditions, habitat size and sub-basin isolation on species diversity. Unexpectedly, the species richness model also highlighted a negative upriver-downriver gradient, contrary to predictions of increasing richness at more downriver locations along fluvial gradients. This reverse gradient may be linked to the history of the Amazon drainage network, which, after isolation as western and eastern basins throughout the Miocene, only began flowing eastward 1-9 million years (Ma) ago. Our results suggest that the main center of fish diversity was located westward, with fish dispersal progressing eastward after the basins were united and the Amazon River assumed its modern course toward the Atlantic. This dispersal process seems not yet achieved, suggesting a recent formation of the current Amazon system.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.