Results 101 to 110 of about 3,001 (214)

A conservation agenda for the Pantanal's biodiversity [PDF]

open access: yes, 2011
A biodiversidade do Pantanal constitui recurso natural com reconhecido valor na economia, na cultura, na recreação, na estética, na ciência e na educação. A vegetação, mais a produtividade sazonal, suporta uma fauna abundante.
Alho, Cleber José Rodrigues   +1 more
core   +1 more source

Following food clouds: feeding association between a minute loricariid and a characidiin species in an Atlantic Forest stream, Southeastern Brazil

open access: yesNeotropical Ichthyology
Following behavior is a widespread feeding tactic among marine fishes, but remains poorly documented for freshwater fishes. The present study describes such association between two freshwater species: the minute armored catfish Parotocinclus maculicauda ...
Rafael P. Leitão   +2 more
doaj   +1 more source

Hydrodynamic role of fish squamosal integument as an analog of the surfaces directly formed by the turbulent flow. Report 2: Hydrodynamic function of squamosal integument [PDF]

open access: yes
The stream flowing round the slowly swimming squama free fish can be laminized with the aid of the external slime coat alone. The slime of the fish with well developed squamae can laminize the stream together with the squamatic integument.
Barsukov, V. V., Kudryashov, A. F.
core   +1 more source

Protected polymorphisms and evolutionary stability of patch-selection strategies in stochastic environments

open access: yes, 2014
We consider a population living in a patchy environment that varies stochastically in space and time. The population is composed of two morphs (that is, individuals of the same species with different genotypes).
Evans, Steven N.   +2 more
core   +1 more source

Physical and biological controls on fine sediment transport and storage in rivers [PDF]

open access: yes, 2018
Excess fine sediment, comprising particles
Casas-Mulet, R.   +10 more
core   +3 more sources

A new species of whiptail armored catfish, genus Pseudohemiodon (Siluriformes: Loricariidae) from the Orinoco River basin, Llanos region of Colombia and Venezuela

open access: yesNeotropical Ichthyology
A new species of whiptail armored catfish belonging to the genus Pseudohemiodon is described. The new species inhabits aquatic systems of the Orinoco River basin, mostly in the Llanos region of Colombia and Venezuela.
Yecid Andrey Rojas-Molina   +2 more
doaj   +1 more source

Characteristics and causes of Texas marine strandings [PDF]

open access: yes, 1998
Three major mass mortality events occurred on the upper Texas coast during 1994, from January through the second week of May. These events were distinguished by unusually large numbers of dead dolphins, sea turtles, and fishes washing ashore on Texas

core  

Revisiting Hypostomus khimaera (Siluriformes: Loricariidae): the identity of a morphologically variable species [PDF]

open access: yesNeotropical Ichthyology
Hypostomus khimaera, described from the upper rio Paraguai basin in Brazil, was reported to present some morphological variations in its original description, which allied to its relatively wide geographical distribution reinforced the need for a new ...
Vandergleison de Carvalho   +4 more
doaj   +1 more source

Contribution of muskeg channel habitats to juvenile coho salmon production in the Situk River, Alaska [PDF]

open access: yes, 2006
Thesis (M.S.) University of Alaska Fairbanks, 2006This study examines seasonal patters of habitat use by juvenile coho salmon in the Situk River and the importance of muskeg channels. To determine seasonal patterns I trapped fish from a range of habitats
Schaberg, Kevin L.
core  

Use of sodium chloride and zeolite during shipment of Ancistrus triradiatus under high temperature

open access: yesNeotropical Ichthyology, 2011
The use of sodium chloride (0.5 g/L and 1 g/L) and zeolite (22.7 g/L) during shipment (48 h) of Ancistrus triradiatus at high temperatures (between 24.5 and 34ºC) were evaluated.
Wilson F. Ramírez-Duarte   +3 more
doaj  

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