Results 31 to 40 of about 10,296 (163)

Amplified response of Amazon floodplain flows to rising river levels

open access: yesEnvironmental Research Letters
The dynamics of Amazon floodplains is tightly connected to the adjacent river flood pulse, yet its hydrological functioning differs from that of the main channel.
Alice Fassoni-Andrade   +9 more
doaj   +1 more source

Hidden diversity in Prochilodus nigricans: A new genetic lineage within the Tapajós River basin.

open access: yesPLoS ONE, 2020
Highly spread through the Amazon River basin, Prochilodus nigricans have had its taxonomic validity recently questioned, when genetic differences between Western and Eastern Amazon populations from the Brazilian shield were detected.
Ueslei Lopes   +2 more
doaj   +1 more source

Capture of a Specimen of “Lepidosiren” in the River Amazons [PDF]

open access: yesNature, 1896
I HAVE just received a letter from Dr. Emil Goeldi, Director of the rising Museum at Para, in which he informs me of the interesting discovery of Lepidosiren at the mouth of the river Amazons (or rather of the river Tocantins). I had better give the part of his letter which refers to this capture. The letter is dated Para, June 9.
openaire   +2 more sources

Spreading of the Amazon River Plume

open access: yesRussian Journal of Earth Sciences, 2023
Results of a joint Russian-Brazilian expedition to study the dynamics of continental river runoff in the ocean associated with the Amazon plume are presented. The stations of the study region covered the seaward part of the Amazon plume. The work was carried out in the dry season (November). The data of in situ measurements and satellite data show that
Eugene Morozov   +13 more
openaire   +2 more sources

Catfishes of the genus Auchenipterichthys (Osteichthyes: Siluriformes: Auchenipteridae): a revisionary study

open access: yesNeotropical Ichthyology
The Neotropical auchenipterid catfish genus Auchenipterichthys is reviewed and found to include four species. Auchenipterichthys thoracatus, formerly considered to be widely distributed throughout the Amazon River basin, is found to be restricted to the ...
Carl J. Ferraris Jr.   +2 more
doaj   +1 more source

A systematic revision of Tatia (Siluriformes: Auchenipteridae: Centromochlinae)

open access: yesNeotropical Ichthyology
The auchenipterid catfish genus Tatia is revised. Twelve species are recognized including three described as new. Tatia is diagnosed by the hyomandibula elongated anterodorsally, the anal-fin base of adult males reduced in length, and the caudal peduncle
Luisa Maria Sarmento-Soares   +1 more
doaj   +1 more source

Spatial distribution, tree host associations, and deforestation threats on two stingless bee species in the Peruvian Amazon

open access: yesJournal of Ecology and Environment
Background: Stingless bees (Apidae: Meliponini) are critical pollinators in the Peruvian Amazon, sustaining biodiversity, crop productivity, and indigenous livelihoods.
Richar Demetrio   +8 more
doaj   +1 more source

Registro de hifomicetos acuáticos para la región andinoamazónica colombiana

open access: yesBiota Colombiana, 2013
Studies concerning the aquatic hyphomycetes are rare in Colombia and non-existent in the Andean region Amazon, which is characterized as a transition between the Andes and the Amazon plain, with abundant river ecosystems, as in the case of the Hacha ...
Gustavo A. Ruiz-Chala   +1 more
doaj   +1 more source

Increased floodplain inundation in the Amazon since 1980

open access: yesEnvironmental Research Letters, 2023
Extensive floodplains throughout the Amazon basin support important ecosystem services and influence global water and carbon cycles. A recent change in the hydroclimatic regime of the region, with increased rainfall in the northern portions of the basin,
Ayan S Fleischmann   +16 more
doaj   +1 more source

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