Results 51 to 60 of about 50,390 (204)

Aquaculture in tropical Mexican lakes and dams: achievements and perspectives [PDF]

open access: yes, 2000
Mexico, with highly diverse physiography, geology, soils and climate, is a country with a broad mosaic of aquatic ecosystems within 320 watersheds.
Carranza, Jorge, Lopez, Martin
core  

CARACTERIZACIÓN MORFOMÉTRICA DE UN SISTEMA FLUVIOLACUSTRE TROPICAL, ANTIOQUIA, COLOMBIA

open access: yesCaldasia, 2008
Se describen las características batimétricas y morfométricas de un lago tropical somero y las predicciones de carácter teórico derivadas de los análisis de los parámetros morfométricos y de los elementos de forma.
MONTOYA MORENO YIMMY
doaj  

Diez años de monitoreo limnológico de un lago natural modificado en los trópicos: el lago Cote, Costa Rica

open access: yesRevista de Biología Tropical, 2014
Esta localizado a 650m sobre el nivel del mar en el límite entre las llanuras del Norte y la vertiente del Pacífico en la Cordillera de Guanacaste, Costa Rica.
Gerardo Umaña
doaj  

Qualitative and quantitative investigations on the macrobenthic fauna of Central Amazon lakes. 1. Lago Tupé, a black water lake on the lower Rio Negro

open access: yes, 1977
Lago Tupé is a black water "ria lake". It is connected with the Rio Negro throughout the year and shows similarly large fluctuations in water level, amounting to nearly 8 m in 1971.
Reiss, F.
core  

Thermal structure of the Poraquê lake, Central Amazonian, Brazil = Estrutura térmica do lago Poraquê, Amazônia Central, Brasil

open access: yesActa Scientiarum: Biological Sciences, 2011
Thermal gradient of a Central Amazonian lake was studied to establish a link between seasonal variations in the water level, temperature, suspended particulate matter (SPM) and thermal stratification.
Fabio Marques Aprile
doaj  

Bryophytes of Bioko (Equatorial Guinea) : results of an excursion in 2002 [PDF]

open access: yes, 2006
97 species of bryophytes are reported as new for the island of Bioko, 89 of them are new for whole Equatorial Guinea, a remarkable amount is new for tropical West Africa and Micromitrium tenerum is new for sub-Saharan Africa. The bryoflora of the highest
Müller, Frank
core  

A 14kyr record of the tropical Andes: The Lago Chungará sequence (18°S, northern Chilean Altiplano)

open access: yesQuaternary International, 2007
Peer ...
Moreno Caballud, Ana   +8 more
openaire   +2 more sources

Estimativa do tamanho das fêmeas com ovos de Moina minuta Hansen, 1899 (Cladocera, Crustacea) no lago Amapá, Rio Branco, Estado do Acre, Brasil

open access: yesActa Scientiarum: Biological Sciences, 2008
Moina minuta, uma espécie tropical de Cladocera, foi selecionada para o estudo do tamanho médio de maturidade e produção de ovos da fêmea, por ser abundante e freqüente nas amostras, durante a fase de águas baixas do ano de 1997 e fase de águas altas em ...
Erlei Cassiano Keppeler   +1 more
doaj   +1 more source

Investigations on the ecology and production-biology of the "floating meadows" (Paspalo-Echinochloetum) on the Middle Amazon. Part 1: The floating vegetation and its ecology

open access: yes, 1970
Investigations on the "floating meadows" (Paspalo-Echinochloetum) of the vârzea- region of central Amazonia in the surroundings of Manaus were made from May 1967 until October 1968.
Junk, W.
core  

Produtividade primária em um lago tropical raso brasileiro: experimentos no lago e em mesocosmos [PDF]

open access: yes
AIM: To evaluate the primary productivity of the phytoplankton in the Lake Monte Alegre, southeastern Brazil, and the factors that influence its fluctuations, experiments were carried out in the lake and in mesocosm; METHODS: Primary productivity rates ...
ARCIFA, Marlene Sofia   +3 more
core   +1 more source

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