Publications of Patrick Dauby
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See detailTrophic diversiy within the eastern Weddell Sea amphipod community
Dauby, Patrick ULiege; Scailteur, Yves; De Broyer, Claude

in Hydrobiologia (2001), 443

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See detailPotential impact of the main benthic amphipods on the eastern Weddell Sea shelf ecosystem (Antarctica)
Dauby, Patrick ULiege; Scailteur, Yves; Chapelle, Gauthier et al

in Polar Biology (2001), 24

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See detailA stable isotope approach to the eastern Weddell Sea trophic web: focus on benthic amphipods
Nyssen, Fabienne ULiege; Brey, Thomas; Lepoint, Gilles ULiege et al

in Polar Biology (2001), 25(4),

isotope (C-13/C-12 and N-15/N-14) analyses were performed on 90 species belonging to different benthic communities sampled in the eastern Weddell Sea. The study focused on eight amphipod species whose ... [more ▼]

isotope (C-13/C-12 and N-15/N-14) analyses were performed on 90 species belonging to different benthic communities sampled in the eastern Weddell Sea. The study focused on eight amphipod species whose isotopic composition was compared to their previously described respective gut contents. Amphipod stable isotope ratios correspond fairly accurately to the trophic classification based on gut contents and attest to their wide spectrum of feeding types. Since the fundamental difference between the isotope and the gut content approaches to diet studies is the time scale each method addresses. this coincidence indicates that there would be no significant changes in feeding strategies over time. Three levels of the food web are covered by the eight species and, instead of belonging strictly to one trophic category, amphipods display a continuum of values from the suspension-feeder to scavengers. [less ▲]

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See detailBiodiversity of the Southern Ocean: Lessons from Crustacea
De Broyer, Claude; Jazdzewski, Krzyzsof; Chapelle, Gauthier et al

Conference (2001)

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See detailStructural and ecofunctional biodiversity of the amphipod crustacean benthic taxocoenoses in the Southern Ocean (Belgian Scientific Programme on the Antarctic, Phase IV)
De Broyer, Claude; Chapelle, Gauthier; Duchesne, Paul-André et al

Report (2001)

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See detailAdaptations des organismes à la vie dans les abysses et les sources hydrothermales
Dauby, Patrick ULiege

Conference given outside the academic context (2000)

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See detailVariations saisonnières des isotopes stables du carbone (13C) et de l'azote (15N) dans un réservoir mésotrophe
Hoffman, Lucien; Willame, Raphaël; Thys, Isabelle et al

Conference (2000, July 17)

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See detailVariations saisonnières des isotopes stables du carbone (13C) et de l'azote (15N) dans un réservoir mésotrophe.
Hoffmann, Lucien; Willame, R.; Thys, I. et al

in Annales scientifiques de l'Université de Clermont-Ferrand 2 (2000, July), 108

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See detailDetermination of trophic status of seabirds using carbon and nitrogen isotopes.
Nyssen, Fabienne; Lepoint, Gilles ULiege; Dauby, Patrick ULiege et al

Poster (2000, May)

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See detailTrophic type diversity within eastern Weddell Sea amphipod community
Dauby, Patrick ULiege; Scailteur, Yves; De Broyer, Claude

Conference (2000, April)

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See detailAmphipods of a stony beach in the maritime Antarctic
Jazdzewski, Krzysztof; De Broyer, Claude; Pudlarz, M et al

Poster (2000, April)

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See detailAn "Antarctic Marine Biodiversity Reference Centre" devoted to amphipod crustaceans
De Broyer, Claude; Van Roozendael, Françoise; Jazdzewski, Krzysztof et al

Poster (2000, April)

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See detailpCO2 - del13CPOC relationships in srface waters of the Gulf of Biscay.
Dauby, Patrick ULiege; Frankignoulle, Michel

Poster (2000, February)

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See detailRelative impacts of a seagrass bed and its adjacent epilithic algal community in consumer diets.
Lepoint, Gilles ULiege; Nyssen, Fabienne; Bouquegneau, Jean-Marie ULiege et al

Poster (2000, February)

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See detailRelative impact of a seagrass bed and its adjacent epilithic algal community in consumer diets
Lepoint, Gilles ULiege; Nyssen, Fabienne ULiege; Gobert, Sylvie ULiege et al

in Marine Biology (2000), 136

The aim of this work was to identify and compare, using nitrogen and carbon stable isotope data, the food sources supporting consumer communities in a Mediterranean seagrass bed (Gulf of Calvi, Corsica ... [more ▼]

The aim of this work was to identify and compare, using nitrogen and carbon stable isotope data, the food sources supporting consumer communities in a Mediterranean seagrass bed (Gulf of Calvi, Corsica) with those in an adjacent epilithic algal dominated community. Isotopic data for consumers are not significantly different in the two communities. Particulate matter and algal material (seagrass epiflora and dominant epilithic macroalgae) appear to be the main food sources in both communities. Generally, the 13C of animals suggests that the seagrass Posidonia oceanica (L.) Delile represents only a minor component of their diet or of the diet of their prey, but the occurrence of a mixed diet is not excluded. P.oceanica dominates the diet of only of few species, among which holothurians appear as key components in the cycling of seagrass material. [less ▲]

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See detailTuna and dolphin associations in the Northeast Atlantic: Evidence of different ecological niches from stable isotope and heavy metal measurements
Das, Krishna ULiege; Lepoint, Gilles ULiege; Loizeau, Véronique et al

in Marine Pollution Bulletin (2000), 40

Associations of tunas and dolphins in the wild are quite frequent events and the question arises how predators requiring similar diet in the same habitat share their environmental resources. As isotopic ... [more ▼]

Associations of tunas and dolphins in the wild are quite frequent events and the question arises how predators requiring similar diet in the same habitat share their environmental resources. As isotopic composition of an animal is related to that of its preys, stable isotopes (13C/12C and 15N/14N) analyses were performed in three predator species from the Northeast Atlantic: the striped dolphin, Stenella coeruleoalba, the common dolphin Delphinus delphis, and the albacore tuna, Thunnus alalunga, and compared to their previously described stomach content. Heavy metals (Cd, Zn, Cu and Fe) are mainly transferred through the diet and so, have been determined in the tissues of the animals. Tunas muscles display higher delta15N than in common and striped dolphins (mean: 11.4 0/00 vs. 10.3 0/00 and 10.4 0/00, respectively) which reflects its higher trophic level nutrition. Higher delta13C are found in common (-18.4 0/00) and striped dolphin (-18.10/00) muscles than in albacore tuna (-19.3 0/00) likely in relation with its migratory pattern. The most striking feature is the presence of two levels of cadmium concentrations in the livers of the tunas (32 mg kg-1 dry weight vs. 5 mg kg-1 dry weight). These two groups also differ by their iron concentrations and their delta15N and delta 13C liver values. These results suggest that in the Biscay Bay, tunas occupy two different ecological niches likely based on different squid input in their diet. [less ▲]

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