Evidence map›Paper›PMID 29399629›Full record

ArticleScience advances2018

Fragmentation of Andes-to-Amazon connectivity by hydropower dams.

Elizabeth P Anderson, Clinton N Jenkins, Sebastian Heilpern, Javier A Maldonado-Ocampo, Fernando M Carvajal-Vallejos, Andrea C Encalada, Juan Francisco Rivadeneira, Max Hidalgo, Carlos M Cañas, Hernan Ortega and 3 more

Abstract read
In one paragraph

Article in Science advances, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

41 citing papers in PubMed.

  1. Article
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  9. Indigenous territories and protected areas are crucial for ecosystem connectivity in the Amazon basin.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  10. Article
  11. Article
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  13. Article
  14. The Andes-Amazon-Atlantic pathway: A foundational hydroclimate system for social-ecological system sustainability.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  15. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors.

Elizabeth P AndersonDepartment of Earth and Environment and Institute for Water and Environment, Florida International University, Miami, FL 33199, USA.ORCID 0000-0003-4641-5810
Clinton N JenkinsIPÊ-Instituto de Pesquisas Ecológicas, Nazaré Paulista, São Paulo 12960, Brazil.ORCID 0000-0003-2198-0637
Sebastian HeilpernDepartment of Ecology, Evolution and Environmental Biology, Columbia University, New York, NY 10027, USA.ORCID 0000-0001-8673-3149
Javier A Maldonado-OcampoUnidad de Ecología y Sistemática (UNESIS), Laboratorio de Ictiología, Departamento de Biología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia.ORCID 0000-0003-3024-237X
Fernando M Carvajal-VallejosFAUNAGUA, Cochabamba, Bolivia.ORCID 0000-0002-9110-490X
Andrea C EncaladaInstituto BIOSFERA, Laboratorio de Ecología Acuática, Universidad San Francisco de Quito, Quito, Ecuador.ORCID 0000-0003-2497-6086
Juan Francisco RivadeneiraCarrera de Biología, Facultad de Ciencias Biológicas, Universidad Central del Ecuador, Quito, Ecuador.ORCID 0000-0002-3293-8381
Max HidalgoDepartamento de Ictiología, Museo de Historia Natural-Universidad Nacional Mayor San Marcos, Lima, Peru.ORCID 0000-0002-0071-5159
Carlos M CañasWildlife Conservation Society, Av. Roosevelt 6360, Miraflores, Lima, Peru.ORCID 0000-0001-9076-6525
Hernan OrtegaDepartamento de Ictiología, Museo de Historia Natural-Universidad Nacional Mayor San Marcos, Lima, Peru.ORCID 0000-0002-4396-2598
Norma SalcedoDepartamento de Ictiología, Museo de Historia Natural-Universidad Nacional Mayor San Marcos, Lima, Peru.ORCID 0000-0001-6254-7288
Mabel MaldonadoUnidad de Limnología y Recursos Acuáticos, Universidad Mayor de San Simón, Cochabamba, Bolivia.ORCID 0000-0002-8112-5635
Pablo A TedescoUMR5174 EDB (Laboratoire Evolution et Diversité Biologique), CNRS, IRD, UPS, ENSFEA, Université Paul Sabatier, F-31062 Toulouse, France.ORCID 0000-0001-5972-5928

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Andes-to-Amazon river connectivity controls numerous natural and human systems in the greater Amazon. However, it is being rapidly altered by a wave of new hydropower development, the impacts of which have been previously underestimated. We document 142 dams existing or under construction and 160 proposed dams for rivers draining the Andean headwaters of the Amazon. Existing dams have fragmented the tributary networks of six of eight major Andean Amazon river basins. Proposed dams could result in significant losses in river connectivity in river mainstems of five of eight major systems-the Napo, Marañón, Ucayali, Beni, and Mamoré. With a newly reported 671 freshwater fish species inhabiting the Andean headwaters of the Amazon (>500 m), dams threaten previously unrecognized biodiversity, particularly among endemic and migratory species. Because Andean rivers contribute most of the sediment in the mainstem Amazon, losses in river connectivity translate to drastic alteration of river channel and floodplain geomorphology and associated ecosystem services.

Identifiers

PMID29399629
PMCPMC5792221

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

None linked

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.