Search results for "Fishe"
showing 10 items of 2001 documents
Parasitismo branquial de peces espáridos (Pisces: Sparidae) del mar Mediterráneo
2004
Induccion de la fase sexual y aspectos relacionado del rotífero Brachionus plicatilis
1992
El zooplancton del litoral valenciano : su estudio en un medio confinado (puerto de Valencia) y en mar abierto (isla de Tabarca)
1991
Estudio biológico de la helmintofauna de la Franciscana (Pontoporia blainvillei) (Cetacea) en aguas de Argentina
1995
Papel de los cetáceos mediterráneos en el ciclo vital de los cestodos tetrafilídeos : Evidencias morfológicas, ecológicas y moleculares
2006
Aportaciones al conocimiento de la biología de Pinna nobilis Linneo, 1758 (Mollusca: Bivalvia) en el litoral mediterráneo ibérico
2005
RESUMEN El molusco bivalvo Pinna nobilis, perteneciente al orden Pterioida, es una especie endémica del Mar Mediterráneo, que suele habitar en las praderas de fanerógamas marinas, donde vive semienterrado, anclado mediante los filamentos del biso. Se trata del molusco más grande del Mediterráneo, ya que puede superar los 80 cm de longitud. El deterioro generalizado de las zonas costeras ha afectado también a esta especie, que ha sido incluida en el Anexo II de la directiva de hábitats, el Anexo IV del Convenio de Barcelona y el Anexo II del Catálogo Nacional de Especies Amenazadas. El presente proyecto de Tesis supone una nueva aportación sobre las características de las poblaciones de esta…
Incorporating intra-annual variability in fisheries abundance data to better capture population dynamics
2022
Abstract To reduce the risk of overexploitation and the ensuing conservation and socio-economic consequences, fisheries management relies on receiving accurate scientific advice from stock assessments. Biomass dynamics models used in stock assessment tend to rely primarily on indices of abundance and commercial landings data. Standard practice for calculating the indices used in these models typically involves taking averages of survey tow data over large, diverse spatial domains. There is a lot of variability in the choice of methodologies used to propagate index uncertainty into the assessment model, many of which require specifying it through expert knowledge or prior distributions. Here…
Long-term impact of 19 years' farmyard manure or sewage sludge application on the structure, diversity and density of the protocatechuate-degrading b…
2012
International audience; Impact of long-term biosolids application on soil-living micro-organisms key players of ecosystemic services is scarcely reported. Here, the impact of the 19 year-long application of farmyard manure (FM) and sewage sludge (SS) organic fertilisation regimes on the protocatechuate-degrading bacterial (pca) community was estimated by comparison to a mineral fertilisation regime (U). The structure, diversity and density of the pca community were determined using pcaH, a gene encoding the protocatechuate 3,4-dioxygenase. Ten years after the last application, the structure of the pca community in soils amended with 55100 (100 t/ha/2 years) and to a lesser extent with FM (1…
Effect of lindane on the blood of a freshwater fish
1991
Evaluating equilibrium and non-equilibrium transport of bromide and isoproturon in disturbed and undisturbed soil columns.
2007
19 pages; International audience; In this study, displacement experiments of isoproturon were conducted in disturbed and undisturbed columns of a silty clay loam soil under similar rainfall intensities. Solute transport occurred under saturated conditions in the undisturbed soil and under unsaturated conditions in the sieved soil because of a greater bulk density of the compacted undisturbed soil compared to the sieved soil. The objective of this work was to determine transport characteristics of isoproturon relative to bromide tracer. Triplicate column experiments were performed with sieved (structure partially destroyed to simulate conventional tillage) and undisturbed (structure preserve…