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| Rosecchi, E; Nouaze, Y. |
| Compound indices are often used in the analysis of fish stomach contents to characterize diet. Five of these indices, combining two or three measures of prey importance: weight, abundance and frequency of occurrence, are mathematically compared in this work. Data from a feeding study of sparid fish show that different indices can produce different results. Four classifications of food, in terms of preferences, are applied to Sparidae, compared and discussed. A new method of classifying the prey of fish into groups is proposed. It characterizes the main items in the diet, whatever feeding index is chosen for the analysis. |
| Tipo: Text |
Palavras-chave: Quantitative distribution; Weight; Predation; Stomach content; Feeding. |
| Ano: 1985 |
URL: http://archimer.ifremer.fr/doc/1985/publication-1773.pdf |
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| Lembeye, Georgina. |
| During the expeditions Cimar - Fiordos 2, 3 and 4 (1996, 1997 and 1999), samples of marine sediments were collected in Southern Chile, between Melinka (Lat. 43° 45' S) and Beagle Channel (Lat. 54° 56' S) to study the distribution and abundance of dinoflagellate cysts, particularly the toxic dinoflagellate Alexandriurn catenella. Samples were collected from 33 stations at depths of 1 to 15 meters. The study included photographic record and taxonomic identification of cysts to genus and, whenever possible, to species, with emphasis on the identification of cysts of A. catenella. Cysts from samples collected in cruises 3 and 4, were incubated in f/2-Se culture medium at 13 °C with controlled photoperiod (14:10, L:D), to induce germination and confirm species... |
| Tipo: Journal Contribution |
Palavras-chave: Sediments; Quantitative distribution; Cysts; Zooplankton; Cysts; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_34811; Http://aims.fao.org/aos/agrovoc/c_15490. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/4126 |
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| Mestiri, M.; Espla Alfonso, R.; Ben Mustapha, K.; Romdhane, M.S.. |
| Une étude systématique des ascidies du Parc marin de Zembra-Zembretta a été menée. L’échantillonnage effectué autour de ces îles a été réalisé, pour la majorité des espèces, par scaphandre autonome sur les substrats rocheux et l’herbier à Posidonia oceanica et aussi par dragage sur les fonds meubles (sable et détritique côtier). La profondeur varie selon les stations de 14 à 70m. Au total, une vingtaine d’espèces a été recensée. Elles appartiennent à 6 familles (Polyclinidae, Polycitoridae, Didemnidae, Diazonidae, Pyuridae et Molgulidae), avec une claire dominance des espèces coloniales face aux espèces solitaires (respectivement 85% et 15%). Trois espèces Synoicum cf. duboscqui, Didemnum granulosum et Didemnum coriaceum ont été signalées pour la première... |
| Tipo: Journal Contribution |
Palavras-chave: Check lists; Invertebrate zoology; Marine parks; Quantitative distribution; Taxonomy; New records; Taxonomy; Marine parks; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_36402. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/4083 |
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