Results 81 to 90 of about 15,082 (117)

Bioantropología de los restos óseos provenientes de un sitio tardío en el bajo Río Magdalena (El Salado, Salamina, Magdalena)

open access: yesMaguaré, 2009
Se reporta el análisis bioantropológico de los restos óseos provenientes del yacimiento El Salado, municipio de Salamina, departamento del Magdalena, Colombia, fecha- dos entre los siglos VII-VIII d.C., ubicado cerca a la ciénaga del Pescado, bosque seco
José Vicente Rodríguez Cuenca   +1 more
doaj  

Implications of differences between temperate and tropical freshwater ecosystems for the ecological risk assessment of pesticides [PDF]

open access: yes
Despite considerable increased pesticide use over the past decades, little research has been done into their fate and effects in surface waters in tropical regions.
Brink, P.J., van den, Daam, M.A.
core   +2 more sources

Desarrollo embrionario-larval del pez tropical Hemirhamphus brasiliensis (Beloniformes: Hemirhamphidae) a partir de huevos recolectados del medio natural

open access: yesRevista de Biología Tropical, 2008
Se describe la formación del embrión y el desarrollo larval del pez Hemirhamphus brasiliensis Linnaeus, 1758, a partir de huevos en estado de mórula, recolectados en el alga parda Sargassum sp.
Jesús Rosas   +3 more
doaj  

Materials and methods for tagging purse seine and baitboat caught tunas [PDF]

open access: yes, 1973
ENGLISH: The percentages of return of purse seine-tagged yellowfin and baitboat- tagged yellowfin and skipjack subjected to various combinations of treatments were tested statistically to determine the effects of the treatments.
Bayliff, William H.
core  

The importance of the marine ornamental reef fish trade in the wider Caribbean

open access: yesRevista de Biología Tropical, 2005
The marine ornamental fish trade began in the 1930s in Sri Lanka,spread to Hawaii and the Philippines in the 1950s,and expanded to a multi-million dollar industry in the 1970s with fisheries established throughout the tropical Pacific,Indian and Atlantic
A.W Bruckner
doaj  

Height-diameter allometry of tropical forest trees [PDF]

open access: yes, 2011
Tropical tree height-diameter (H:D) relationships may vary by forest type and region making large-scale estimates of above-ground biomass subject to bias if they ignore these differences in stem allometry.
Affum-Baffoe, K.   +23 more
core   +1 more source

Investigating the topology of interacting networks - Theory and application to coupled climate subnetworks

open access: yes, 2011
Network theory provides various tools for investigating the structural or functional topology of many complex systems found in nature, technology and society.
A. Arenas   +54 more
core   +1 more source

Tolerancia térmica del pez tropical Cyprinodon dearborni (Athedniformes: Cyprinodontidae) a diversas tasas de calentamiento y salinidades

open access: yes, 2015
El máximo térmico crítico (MTC) es un indice' fisiológico que ha sido usado como indicador de tolerancia térmica de organismo acuáticos.
openaire   +1 more source

Una nueva especie de Hyphessobrycon (Characiformes: Characidae) de la cuenca del río Telembí, vertiente sur del Pacífico, Colombia A new species of Hyphessobrycon (Characiformes: Characidae) from the Telembí River drain- age, Southern Pacific slope of Colombia

open access: yesRevista de Biología Tropical, 2013
El género Hyphessobrycon, se incluye dentro de la subfamilia Tetragonopterinae. Las especies generalmente son pequeñas, no sobrepasan los 70mm de longitud estándar, son importantes económicamente como peces ornamentales, con 128 especies validas que se ...
Carlos A. García-Alzate   +2 more
doaj  

Home - About - Disclaimer - Privacy