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Heavy metals in marine mammals
Doubts are left about the general applicability of collected values at which an effect at individual or population level might be expected, because the available measurements have almost been all performed on animals found dead, and the data are always difficult to interpret. Expand
Relative impact of a seagrass bed and its adjacent epilithic algal community in consumer diets
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 with those in an adjacent epilithic alga-dominated community. Expand
Marine mammals from the southern North Sea: feeding ecology data from δ13C and δ15N measurements
Fin whales, sperm whales and white-sided dolphins are 13 C-depleted compared toSouthern North Sea particulate organic matter and species, suggesting that despite regular sightings, they do not feed within the southern North Sea area. Expand
Tuna and Dolphin Associations in the North-east Atlantic: Evidence of Different Ecological Niches from Stable Isotope and Heavy Metal Measurements
Tuna muscles display higher d 15 N than in common and striped dolphins and the presence of two levels of cadmium concentrations in the livers of the tunas suggest that in the Biscay Bay, tunas occupy two diAerent ecological niches probably based ondiAerent squid inputs in their diet. Expand
Feeding ecology of five commercial shark species of the Celtic Sea through stable isotope and trace metal analysis.
Cd and Hg were correlated with isotopic ratios delta13C and delta15N, and were shown to be diet-related whereas Zn, Fe and Cu seemed much more linked to species-specific metabolism. Expand
Marine mammals from northeast Atlantic: relationship between their trophic status as determined by delta13C and delta15N measurements and their trace metal concentrations.
The results suggest that Cd accumulation is partly linked to the diet while other factors such as age or body condition might explain Hg, Zn or Cu variability in marine mammals. Expand
Rise of oceanographic barriers in continuous populations of a cetacean: the genetic structure of harbour porpoises in Old World waters
This work applies a combination of recent individual-based landscape genetic approaches to investigate the population genetic structure of a highly mobile extensive range cetacean, the harbour porpoise in the eastern North Atlantic, with regards to oceanographic characteristics that could constrain its dispersal. Expand
A stable isotope approach to the eastern Weddell Sea trophic web: focus on benthic amphipods
Amphipod stable isotope ratios correspond fairly accurately to the trophic classification based on gut contents and attest to their wide spectrum of feeding types, which indicates that there would be no significant changes in feeding strategies over time. Expand
Heavy metals in Posidonia oceanica and Paracentrotus lividus from seagrass beds of the north-western Mediterranean
Abstract The concentration of Zn, Pb, Cd, Fe, Cr, Cu and Ti were measured in specimens of the seagrass Posidonia oceanica and the echinoid Paracentrotus lividus from three meadows in the N.W.Expand
Distribution of heavy metals in the echinoid Paracentrotus lividus from the Mediterranean Posidonia oceanica ecosystem: seasonal and geographical variations
The present work emphasises the need to consider both body compartment and sampling period as important factors in studies intending to use P. lividus as a biomonitor species, and recommends digestive wall and gonads for use inBiomonitoring programmes, though with some restrictions for gonads. Expand