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	Provedor de dados OceanDocs (3) Autor Vidal, L.A. (3) Gocke, K. (2) Mancera P., J.E. (2) Fonseca, D. (1) Guillot, G. (1) Meyerhöfer, M. (1) Morales, E. (1) Sánchez, G.E. (1) Mais... Palavra-chave Coastal lagoons (2) Http://aims.fao.org/aos/agrovoc/c_1697 (2) Http://aims.fao.org/aos/agrovoc/c_13344 (1) Http://aims.fao.org/aos/agrovoc/c_28560 (1) Http://aims.fao.org/aos/agrovoc/c_34329 (1) Http://aims.fao.org/aos/agrovoc/c_35986 (1) Http://aims.fao.org/aos/agrovoc/c_5875 (1) Http://aims.fao.org/aos/agrovoc/c_6751 (1) Phosphates (1) Phytoplankton (1) Pigments (1) Primary production (1) Salinity (1) Silicates (1) Mais... Tipo do documento Journal Contribution (3) Ano 2003 (3) País Belgium (3) Idioma Inglês (2) Espanhol (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Respuesta de la diatomea Actinocyclus normanii Hustedt, a las variaciones en la densidad celular inicial, concentración de salinidad, silicato y fosfato en condiciones de laboratorio OceanDocs Sánchez, G.E.; Morales, E.; Guillot, G.; Vidal, L.A.. Microalgae are important for the restoration of coastal lagoon ecosystems affected by human activities because they are useful indicators of variations of salinity and levels of nutrients such as silicate and phosphate in the water column. With the centric diatom Actinocyclus normanii from Ciénaga Grande de Santa Marta (Colombian Caribbean) we conducted several experiments to evaluate the responses of this species at three levels of salinity (0, 15 and 25) and two initial densities (100 and 800 cells·ml-1) to nine treatments combining several concentrations of phosphate (0, 1,5 and 3,0 µmol·l-1) and silicate (10, 150 and 300 µmol·l-1). All treatments were maintained with light intensity of 57,9 mE-2·seg-1, photoperiod of 12:12 hrs, temperature between 22... Tipo: Journal Contribution Palavras-chave: Phosphates; Salinity; Silicates; Phosphates; Salinity; Silicates; Http://aims.fao.org/aos/agrovoc/c_35986; Http://aims.fao.org/aos/agrovoc/c_6751; Http://aims.fao.org/aos/agrovoc/c_28560. Ano: 2003 URL: http://hdl.handle.net/1834/3124 Phytoplankton composition in coastal lagoons of different trophic status in Northern Colombia determined by microscope and HPLC-Pigment analysis OceanDocs Gocke, K.; Meyerhöfer, M.; Mancera P., J.E.; Vidal, L.A.. The regional differences in the composition of the phytoplankton assemblages in several coastal lagoons of the “Outer Delta of the Río Magdalena” (Caribbean coast of Colombia) were determined using microscopic counting and HPLC-pigment measurements. The study sites can be classified as 1) a group of limnic lagoons with relatively low (5.5-19 µg/l) chlorophyll a (chl a) concentrations and high inorganic suspension loading, 2) a group of brackish lagoons with high (62-90 µg/l) chl a concentrations and high amounts of organic seston, (two further lagoons form a transition between group 1 and 2, and 3) a fully marine Caribbean bay with very low (0.3 µg/l) chl a and seston concentrations. The regional variations in salinity of the lagoons are due to inflow of... Tipo: Journal Contribution Palavras-chave: Phytoplankton; Pigments; Coastal lagoons; Phytoplankton; Pigments; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_5875; Http://aims.fao.org/aos/agrovoc/c_1697. Ano: 2003 URL: http://hdl.handle.net/1834/3200 Planktonic primary production and community respiration ini several coastal lagoons of the outer Delta of the Rio Magdalena, Colombia OceanDocs Gocke, K.; Mancera P., J.E.; Vidal, L.A.; Fonseca, D.. To understand the responses of the plankton community to the negative large-scale human impacts in a tropical coastal lagoon complex, we carried out a regional survey on primary productivity (PP), community respiration (CR), and contribution of different size fractions of the phytoplankton to overall PP. This comparative study was undertaken in several coastal lagoons within the Outer Delta of the Río Magdalena (Colombia) during the dry season(February/March). PP was measured using the 14C-method with in situ-incubations and CR was determined as oxygen demand, using the Winkler technique. According to their salinities the lagoons were separated into a brackish water group (salinity range 5.9 – 21.8) and a freshwater group, the latter being influenced... Tipo: Journal Contribution Palavras-chave: Primary production; Coastal lagoons; Primary production; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_34329; Http://aims.fao.org/aos/agrovoc/c_1697. Ano: 2003 URL: http://hdl.handle.net/1834/3116 Registros recuperados: 3 Primeira ... 1 ... Última

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