Results 81 to 90 of about 50,390 (204)

Ecology of bryophytes along altitudinal and latitudinal gradients in Chile [PDF]

open access: yes, 2002
The bryophyte vegetation in twenty-eight hectare plots in forests of S-Chile between 38° and 42°S and sea level and the forest line has been studied. Since bryophytes are fully dependend on atmospheric water and nutrient supply, they are good indicators ...
Frahm, Jan-Peter
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Nitrógeno: elemento limitante para el crecimiento fitoplanctónico en un lago oligotrófico tropical

open access: yes, 2008
"El presente estudio tuvo como propósito evaluar si las concentraciones naturales de fósforo y nitrógeno limitaban la biomasa fitoplanctónica en el Lago Alchichica. Se aplicaron tratamientos de enriquecimiento con nitrógeno, fósforoy nitrógeno + fósforo durante las dos etapas características de la hidrodinámica del lago: estratificación y mezcla.Se dio
Erik Ramos Higuera   +3 more
openaire   +1 more source

Limnología de un Lago Tropical de Alta Montaña, en Ecuador: características de los sedimentos y tasa de sedimentación

open access: yesRevista de Biología Tropical, 2003
Se han realizado estudios sedimentológicos en el Lago San Pablo, un lago tropical de alta montaña, situado en los Andes del Ecuador, a 2 660 m sobre el nivel del mar. El lago presenta características propias de un estado eutrófico y, como consecuencia de
Günter Gunkel
doaj  

The assessment of physico-chemical parameters of Shiroro Lake and its major tributaries [PDF]

open access: yes, 1999
The physico-chemical parameters of the surface water of Shiroro Lake and its major tributaries at their entry point to the reservoir were assessed over a period of eighteen months. As in other African inland water bodies there were seasonal variations in
Kolo, R.J.
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Metabolismo lacustre de un lago tropical profundo: ¿Fuente o sumidero de carbono?

open access: yes, 2015
"Los sistemas acuáticos epicontinentales constituyen un componente importante en el ciclo global del carbono. Con el fin de generar una línea base respecto a si los lagos tropicales funcionan como fuente o sumidero de dióxido de carbono (CO2) se evaluó la producción primaria bruta, neta y la respiración en la zona eufótica de un lago oligotrófico ...
Luis A. Oseguera   +2 more
openaire   +1 more source

Estado del arte de la limnología de lagos de planos inundables (Ciénagas) en Colombia

open access: yesGestión y Ambiente, 2011
Colombia es uno de los países con mayor diversidad de especies y de ecosistemas en el planeta. Los lagos ubicados en llanuras de inundación o «ciénagas» (como comúnmente se las conoce en Colombia) comprenden un tipo de ecosistema acuático, que, no ...
Montoya Moreno Yimmy, Aguirre R Néstor
doaj   +2 more sources

Optimizing Residential Building Orientation for Sustainable Daylighting in the Tropics: A Case Study in Lagos, Nigeria

open access: yesInternational Journal of Scientific Research and Management (IJSRM)
Daylighting is an essential aspect of sustainable building design as it reduces reliance on artificial lighting, improves energy efficiency, and promotes a healthier indoor environment. However, in the tropics, where excessive solar heat gain and intense sunlight prevail, designing residential buildings that maximise daylight while minimising heat gain
Ayomipo Fadeyi   +3 more
openaire   +1 more source

Reproduction of the fish Poeciliopsis gracilis (Cyprinodontiformes: Poeciliidae) in Coatetelco, a tropical shallow lake in Mexico

open access: yesRevista de Biología Tropical, 2008
A reproductive analysis of 1 225 specimens of Poeciliopsis gracilis obtained through monthly samples from Coatetelco, a tropical shallow lake in Central Mexico, was made.
José Luis Gómez-Márquez   +4 more
doaj  

Primary production of phytoplankton in the three types of Amazonian waters. V. Some investigations on the phytoplankton and its primary productivity in the clear water of the lower Rio Tapajós (Pará, Brazil)

open access: yes, 1982
Four limnological investigations were conducted in different seasons of the years 1968 and 1969 at the lower reaches of the Rio Tapajóz. The physical and chemical parameters generally correspond with earlier findings of other authors. Midriver areas show
Schmidt, G.
core  

Investigations on the respiration of the Neotropical fish, Colossoma macropomum (Serrasalmidae). The influence of weight and temperature on the routine oxygen consumption

open access: yes, 1983
The influence of weight and temperature on the routine oxygen consumption of Colossoma macropomum, a Neotropical fish species of the family Serrasalmidae, was investigated using a constant flow respirometer.
Saint-Paul, U.
core  

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