| Titre : | Vie et Milieu - Life and Environment 66(3 - 4) - 2016 |
| Type de document : | Bulletin |
| Paru le : | 01/09/2016 |
Dépouillements
Article
P. Riera, Auteur ;
L. M.-L. J. Noel, Auteur ;
C. Leroux, Auteur ;
E. Legrand, Auteur ;
S. Martin, Auteur
This study aimed to evaluate experimentally the effect of high pCO2/low pH on a simple biotic assemblage including grazer molluscs (Patella ulyssiponensis and Gibbula umbilicalis) and the biofilm as food source through the use of δ13C and δ15N. [...]
Article
F. LÜSKOW, Auteur ;
H. U. RIISGÅRD, Auteur
The population density and individual size of the common jellyfish Aurelia aurita were studied during 2014 and 2015 in two Danish fjord systems, Kertinge Nor and Mariager Fjord in order to obtain a better understanding of the driving forces for [...]
Article
D. Beauchesne, Auteur ;
P. Desjardins-Proulx, Auteur ;
P. Archambault, Auteur ;
D. Gravel, Auteur
Large networks of ecological interactions, such as food webs, are complex to characterize, be it empirically or theoretically. The former requires exhaustive observations, while the latter generally requires ample data to be validated. We theref[...]
Article
F. Jordán, Auteur ;
G. Sciarpetti, Auteur ;
W. C. Liu, Auteur
We studied 25 published marine food web models. We compared the sizes of carbon flows to the strength of interactions inferred by a topological measure. We determined which network properties correlate with a significant relationship between maj[...]
Article
Real food webs are characterized by complex set of interactions that are considered fundamental to keep the system stable as well as to provide resilience and resistance to perturbations. The complexity of food webs is intrinsically connected wi[...]
Article
The stony road to understand isotopic enrichment and turnover rates: Insight into the metabolic part
S. Lefebvre, Auteur ;
S. F. Dubois, Auteur
Trophic enrichment factors (TEF) are essential to properly and fruitfully explore stable isotope analysis in ecology. And so is the time window of food source integration, usually estimated with the turnover rates (λ) of isotopic incorporation. [...]
Article
F. Charles, Auteur ;
C. Nozais, Auteur ;
F. Lantoine, Auteur ;
J. Rzeznik-Orignac, Auteur ;
C. Labrune, Auteur ;
J. Coston-Guarini, Auteur
Using stable isotope analyses, the present study looked at the fractionation of carbon and nitrogen isotopes between bulk sediment organic matter, particulates from the water column, and benthic consumers from the Northwestern Mediterranean cont[...]
Article
A. Paris, Auteur ;
G. Cabana, Auteur ;
J. J. Frenette, Auteur
Stable carbon isotopes are increasingly used to estimate the relative contribution of phytoplankton and periphyton towards secondary production in aquatic food webs. This approach, developed mostly through studies of deep stratified lakes, remai[...]
Article
J. F. Dias, Auteur ;
M. A. V. Petti, Auteur ;
T. N. Corbisier, Auteur
In order to verify the trophic position and condition of Engraulis anchoita larvae, this study applied stable isotope technique and condition indexes. The area comprises the continental shelf off the Cabo Frio (from 40 to 120 m depth), where a s[...]
Article
E. Fouilland, Auteur ;
B. Mostajir, Auteur ;
M. Gosselin, Auteur ;
M. Levasseur, Auteur ;
S. Roy, Auteur ;
F. Vidussi, Auteur ;
S. de Mora, Auteur ;
S. Demers, Auteur
A plankton community (
Article
A. Emmery, Auteur ;
M. Alunno-Bruscia, Auteur ;
M. P. Bataillé, Auteur ;
S. A. L. M. Kooijman, Auteur ;
S. Lefebvre, Auteur
