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| Díaz-M., J.M.; Gómez-López, D.I.. |
| The spatial distribution of seagrass beds within the Cartagena Bay and neighboring areas was reconstructed through comparative analyses of maps, aerial photographs and satellite imagery, as well as observations in the field for five time periods within the last six decades. From slightly more than 1,000 hectares of seagrass beds existing in 1935-45, only 76 remained in 2001, which is less than 8%. The loss rate of seagrass within the bay showed an inverse exponential pattern, whereas outside of the bay the tendency was linear. The almost disappearance of this community was probably raged by the reopening of the Canal del Dique early in the thirties, causing the introduction of important amounts of turbid freshwater and sediments into the bay, and... |
| Tipo: Journal Contribution |
Palavras-chave: Distribution; Distribution; Http://aims.fao.org/aos/agrovoc/c_35773. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/3078 |
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| Gómez-López, D.I.; Albis-Salas, M.R.; Duque-Nivia, G.. |
| La distribución espacial de los pastos marinos depende de las condiciones ambientales presentes, destacándose la profundidad, temperatura, salinidad, sustrato y nutrientes. La plataforma continental de La Guajira presenta extensas praderas de pastos marinos dominadas por Thalassia testudinum, las cuales representan más del 80 % del total nacional. Con el fin de caracterizar su distribución en función de la profundidad, materia orgánica y tipo de sustrato, se midieron algunas variables estructurales de T. testudinum en 15 estaciones situadas en uno de los tres siguientes intervalos de profundidad: somero (0-2 m), medio (2-4 m) y profundo (>4 m). Mediante cuadrantes de 20 x 20 cm se determinó la densidad de vástagos,... |
| Tipo: Journal Contribution |
Palavras-chave: Environmental factors; Sea grass; Environmental factors; Http://aims.fao.org/aos/agrovoc/c_2594. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/4023 |
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