Identifying the current and future status of freshwater connectivity corridors in the Amazon Basin

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cg.authorship.typesCGIAR and advanced research institute
cg.contributor.affiliationWorld Wide Fund for Nature
cg.contributor.affiliationConfluvio GeoSpatial
cg.contributor.affiliationFundacion Faunagua
cg.contributor.affiliationInternational Center for Tropical Agriculture
cg.contributor.affiliationSt. Johns River Water Management District
cg.contributor.affiliationWildlife Conservation Society
cg.contributor.affiliationUniversidade Federal do Pampa
cg.contributor.affiliationOmacha Foundation
cg.contributor.affiliationPontificia Universidad Javeriana
cg.contributor.affiliationEvolution et diversite biologique
cg.contributor.affiliationUniversidade Federal de Juiz de Fora
cg.contributor.affiliationNature Conservancy
cg.contributor.affiliationInstituto Brasileiro de Geografia e Estatistica
cg.identifier.doihttps://doi.org/10.1111/csp2.12853
cg.isijournalISI Journal
cg.issn2578-4854
cg.issue1
cg.journalConservation Science and Practice
cg.numbere12853
cg.reviewStatusPeer Review
cg.river.basinAMAZON
cg.subject.alliancebiovciatBIODIVERSITY
cg.subject.impactAreaEnvironmental health and biodiversity
cg.subject.sdgSDG 7 - Affordable and clean energy
cg.volume5
dc.contributor.authorCaldas, Bernardo
dc.contributor.authorThieme, Michele L.
dc.contributor.authorShahbol, Natalie
dc.contributor.authorCoelho, Maria E.
dc.contributor.authorGrill, Guenther
dc.contributor.authorDamme, Paul A. van
dc.contributor.authorAranha, Ricardo
dc.contributor.authorCañas, Carlos
dc.contributor.authorFagundes, Camila K.
dc.contributor.authorFranco-Leon, Nicole
dc.contributor.authorHerrera-Collazos, Edgar E.
dc.contributor.authorJézéquel, Céline
dc.contributor.authorMontoya, Mariana
dc.contributor.authorMosquera-Guerra, Frederico
dc.contributor.authorOliveira-da-Costa, Marcelo
dc.contributor.authorPaschoalini, Mariana
dc.contributor.authorPetry, Paulo
dc.contributor.authorOberdorff; Thierry
dc.contributor.authorTrujillo, Fernando
dc.contributor.authorTedesco, Pablo A.
dc.contributor.authorde Brito Ribeiro, Mauro César Lambert
dc.date.accessioned2022-12-20T08:01:13Zen
dc.date.available2022-12-20T08:01:13Zen
dc.identifier.urihttps://hdl.handle.net/10568/126100
dc.titleIdentifying the current and future status of freshwater connectivity corridors in the Amazon Basinen
dcterms.abstractThe Amazon Basin features a vast network of healthy, free-flowing rivers, which provides habitat for the most biodiverse freshwater fauna of any basin globally. However, existing and future infrastructure developments, including dams, threaten its integrity by diminishing river connectivity, altering flows, or changing sediment regimes, which can impact freshwater species. In this study, we assess critical rivers that need to be maintained as freshwater connectivity corridors (FCCs) for selective freshwater species—long-distance migratory fishes and turtles (both with migrations >500 km) and river dolphins. We define FCCs as river stretches of uninterrupted river connectivity that provide important riverine and floodplain habitat for long-distance migratory and other species and that maintain associated ecosystem functions. We assessed more than 340,000 km of river, beginning with an assessment of the connectivity status of all rivers and then combining river status with models of occurrence of key species to map where FCCs occur and how they could be affected under a scenario of proposed dams. We identified that in 2019, 16 of 26 very long (>1000 km) rivers are free-flowing but only 9 would remain free-flowing if all proposed dams are built. Among long and very long rivers (>500 km), 93 are considered FCCs. Under the future scenario, one-fifth (18) of these long and very long FCCs—those that are of critical importance for long-distance migrants and dolphins—would lose their FCC status, including the Amazon, the Negro, Marañ on, Napo, Ucayali, Preto do Igap o Açu, Beni, and Uraricoera rivers. To avoid impacts of poorly sited infrastructure, we advocate for energy and water resources planning at the basin scale that evaluates alternative development options and limits development that will impact on FCCs. The results also highlight where corridors could be designated as protected from future fragmentation.en
dcterms.accessRightsOpen Access
dcterms.audienceScientists
dcterms.available2022-12-14
dcterms.bibliographicCitationCaldas, B.; Thieme, M.L.; Shahbol, N.; Coelho, M.E.; Grill, G.; Van Damme, P.A.; Aranha, R.; Cañas, C.; Fagundes, C.K.; Franco-Leon, N.; Herrera-Collazos, E.E.; Jézéquel, C.; Montoya, M.; Mosquera-Guerra, F.; Oliveira-da-Costa, M.; Paschoalini, M.; Petry, P.; Oberdorff; T.; Trujillo, F.; Tedesco, P.A.; de Brito Ribeiro, M.C.L. (2022) Identifying the current and future status of freshwater connectivity corridors in the Amazon Basin. Conservation Science and Practice e12853 First Published (14 December 2022) 21 p. ISSN: 2578-4854en
dcterms.extent21 p.
dcterms.issued2023-01
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherWiley
dcterms.subjectamazon riveren
dcterms.subjectfreshwateren
dcterms.subjectbiodiversityen
dcterms.subjectenergy generationen
dcterms.subjectamazonas (brasil)en
dcterms.subjectagua dulceen
dcterms.subjectbiodiversidaden
dcterms.subjectgeneración de energíaen
dcterms.typeJournal Article

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