Results 91 to 100 of about 13,590 (167)

Redescription of Hypoptopoma inexspectata (Holmberg, 1883), with notes on its anatomy (Siluriformes: Loricariidae). [PDF]

open access: yes, 2001
Hypoptopoma inexspectata is diagnosed and redescribed based on the examination of additional material and comparison with its congeners. This poorly known hypoptopomine species is distributed in the Paraguay and Paraná river draínages.
Aquino, Adriana E.   +1 more
core   +1 more source

Dermal lip protuberances associated with aquatic surface respiration in juveniles of the piscivorous characid Salminus brasiliensis (Actinopterygii: Characidae)

open access: yesNeotropical Ichthyology
Some South American freshwater fishes can improve their capability of aquatic surface respiration (ASR) by developing dermal lip protuberances in the lower jaw. This adaptation was thought to be limited to omnivorous or herbivorous fishes.
Pablo A. Scarabotti   +3 more
doaj   +1 more source

Spatiotemporal Variations in Abundance and Biomass of Planktonic Ciliates Related to Environmental Variables in a Temporal Pond, Argentina [PDF]

open access: yes, 2012
This report describes the structure and seasonal dynamics of ciliated protozoa associated with variations in the physicochemical characteristics of the environment in a temporary pond in the Buenos Aires province, Argentina.
Claps, Maria Cristina   +1 more
core   +1 more source

Análisis de las interacciones tróficas en microcosmos : estudio preliminar [PDF]

open access: yes, 2008
Fil: Ruiz, Gonzalo. Instituto de Limnología Dr. R. Ringuelet, (ILPLA), CONICET-UNLP. Florencio Varela, ArgentinaFil: Ardohain, Diego. Instituto de Limnología Dr. R. Ringuelet, (ILPLA), CONICET-UNLP.
Ardohain, Diego   +3 more
core   +2 more sources

Fitoplancton, epipelon, materia orgánica y fósforo de una laguna arreica en relación con fases claras y turbias [PDF]

open access: yes, 2009
Fil: Mac Donagh, María Elicia. División Ficología. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Casco, María Adela. División Ficología. Facultad de Ciencias Naturales y Museo.
Cano, María Gabriela   +5 more
core  

Fitoplancton de una laguna pampásica (San Miguel del Monte, Buenos Aires, Argentina) : variación espacio-temporal de los grupos funcionales [PDF]

open access: yes, 2008
Fil: Kuaíni, Karina. Instituto de Limnología Dr. R. Ringuelet, (ILPLA), CONICET-UNLP. Florencio Varela, ArgentinaFil: Solari, Lía Cristina. Instituto de Limnología Dr. R. Ringuelet, (ILPLA), CONICET-UNLP.
Kuaíni, Karina   +2 more
core   +1 more source

Culicidae y Ceratopogonidae (Diptera: Nematocera) que habitan en fi totelmata en el Parque Nacional Iguazú, provincia de Misiones, Argentina subtropical [PDF]

open access: yes, 2011
A list of the most common phytotelmata and their Culicidae and Ceratopogonidae inhabitants from Iguazú National Park, Misiones Province, Argentina, is presented, and biological and behavioral observations are also included.
Campos, Raul Ernesto   +2 more
core  

Snakes of the fluvial littoral of Argentina (Reptilia: Serpentes): Biodiversity and synthesis on the actual state of knowledge [PDF]

open access: yes, 2004
We analyzed the state of knowledge of the snakes biodiversity in the fluvial littoral of Argentina including aspect of species richness, sistematic, biogeography, biology, ecology and conservation.
Arzamendia, Vanesa   +2 more
core  

Estado de conocimiento de los malacostráceos dulceacuícolas de Chile Current state of knowledge of freshwater malacostracans of Chile

open access: yesGayana, 2006
La fauna de crustáceos malacostráceos limnéticos, en el territorio de Chile continental, está compuesta por seis especies de camarones, i.e., cinco parastácidos de los géneros Parastacus, Samastacus y Virilastacus y un palemónido del género Cryphiops, 18
Carlos G Jara   +2 more
doaj  

DIVERSIDAD Y ABUNDANCIA DE COMUNIDADES ZOOPLANCTONICAS LITORALES DEL HUMEDAL PANTANOS DE VILLA, LIMA, PERU DIVERSITY AND ABUNDANCE OF LITTORAL ZOOPLANKTONIC COMMUNITIES OF PANTANOS DE VILLA WETLAND, LIMA, PERU

open access: yesGayana, 2007
Pantanos de Villa es un humedal costero conformado por varios cuerpos de agua, permanentes y estacionales. Este ecosistema es reconocido internacionalmente como sitio RAMSAR y se encuentra ubicado al sur de la zona urbana de Lima, Perú.
José Iannacone, Lorena Alvariño
doaj  

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