Results 41 to 50 of about 4,856 (153)

Ichthyological ecoregions of Argentina [PDF]

open access: yes, 2002
The Argentine Republic is situated in the southernmost portion of the American continent, occupying over 2,785,600 km2 not including the Antarctic territory. The country ranges from subtropical areas (21º46’S) to subantarctic regions (55º03’S), extending
López, Hugo Luis   +2 more
core  

Linking rivers, mixing faunas: How artificial connectivity between the Middle and Upper Paraná River basins shapes fish diversity in a tributary of the Itaipu Reservoir, Brazil

open access: yesJournal of Fish Biology, EarlyView.
Abstract This work aimed to investigate the distribution and occurrence of fish species along the São Francisco Falso Braço Norte (SFFBN) River basin, a tributary of the Middle Paraná River basin now artificially connected to the Upper Paraná ecoregion, to evaluate how such connectivity may affect the biogeographic distribution and regional composition
Lucas E. P. Kampfert   +5 more
wiley   +1 more source

Biota acuática en la Amazonía Peruana: diversidad y usos como indicadores ambientales en el Bajo Urubamba (Cusco - Ucayali)

open access: yesRevista Peruana de Biología, 2011
En el presente trabajo se aplican índices biológicos de calidad ambiental y conservación, basados en el monitoreo biológico realizado entre año 2003 y 2009, en cinco localidades del río Bajo Urubamba.
Hernán Ortega   +3 more
doaj   +1 more source

La Bibliografía Científica de Fernando de Buen. [PDF]

open access: yes, 2015
Si bien existen varios ensayos biográficos que enfocan diferentes momentos de su vida (ANÓNIMO, 1963, BAHAMONDE, 1962, LÓPEZ et al., 2015, NION, 2015, PEQUEÑO, 2015, SÁNCHEZ CARRILLO, 2001), hasta donde tenemos conocimiento, no se ha publicado aún una ...
Mones, Álvaro
core  

Selective Effects of Environmental Conditions and Protection Levels on Herbivorous Fish Functions in the Largest South Atlantic Reef Complex

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 1, January 2026.
ABSTRACT Herbivorous fish are key components in maintaining functionality in reef environments; however, this group is widely threatened by overfishing and habitat degradation. Investigating the main factors determining the structure of herbivorous fish becomes paramount to defining management strategies amid anthropogenic impacts. This study evaluated
Douglas Moraes   +4 more
wiley   +1 more source

Lista de especies de peces de la cuenca del Río Ucayali, Perú

open access: yesRevista Peruana de Biología, 2022
En este trabajo se presenta una lista actualizada de los registros de especies de peces de la cuenca del río Ucayali, Perú, provenientes de datos publicados y no publicados. Los resultados muestran que la cuenca del Ucayali presenta una ictiofauna rica y
Junior Chuctaya   +4 more
doaj   +1 more source

Documentos Históricos - I. Actos generados por la FCNyM, UNLP. [PDF]

open access: yes, 2005
La historia de las instituciones está construida por una serie de hechos y determinaciones de sus protagonistas. En algunos casos, estos momentos son registrados en documentos dispersos, mientras que una gran mayoría están sumergidos en el tiempo con la ...
López, H.ugo L. (comp.)   +1 more
core  

The oldest acanthomorph fossil (Actinopterygii, Teleostei) from the Early Cretaceous of Gondwana (Morro do Chaves Formation, Sergipe–Alagoas Basin, NE Brazil)

open access: yesPapers in Palaeontology, Volume 12, Issue 1, January/February 2026.
Abstract This paper presents the discovery of †Gondwanacanthus decollatus, a new genus and species of Early Cretaceous deep‐bodied fish from the late Barremian or early Aptian Morro do Chaves Formation in the Sergipe–Alagoas Basin, northeastern Brazil. It represents the first record of Acanthomorpha in Early Cretaceous Gondwana.
Alexandre Cunha Ribeiro   +3 more
wiley   +1 more source

Diet composition of fish species from the southern continental shelf of Colombia [PDF]

open access: yes, 2002
The diet composition of 30 fish species belonging to 16 families from the Pacific Coast of Colombia is described. Benthic crustaceans (37.5%) and bony fishes (23.7%, chiefly demersal) were the most important food items for the fish species analyzed. Data
Arcila, C.A.T., Lopez-Peralta, R.H.
core  

Fernando de Buen. Ictiólogo Iberoamericano. [PDF]

open access: yes, 2015
Este documento está dedicado al recuerdo de Fernando de Buen, a quién podríamos considerar como uno de los primeros “ictiólogos iberoamericanos”. En este caso nos encontramos con un profesional que, por la locura de una guerra fratricida, tuvo que ...
Del Moral Flores, Luis Fernando   +5 more
core  

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