@article {9107, title = {Local scale high frequency monitoring of seaweed strandings along an intertidal shore of the English Channel (Luc-sur-Mer, Normandy France) {\textendash} Effect of biotic and abiotic factors}, journal = {Aquatic Botany}, volume = {186}, year = {2023}, month = {Jan-05-2023}, pages = {103616}, issn = {03043770}, doi = {10.1016/j.aquabot.2023.103616}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0304377023000013}, author = {St{\'e}phanie Lemesle and Anne-Marie Rusig and Isabelle Mussio} } @article {4515, title = {Dynamics of δ(15)N isotopic signatures of different intertidal macroalgal species: Assessment of bioindicators of N sources in coastal areas.}, journal = {Mar Pollut Bull}, volume = {110}, year = {2016}, month = {2016 Sep 15}, pages = {470-83}, abstract = {

δ(15)N of annual (Ulva sp., Porphyra sp.) and perennial intertidal seaweed species (Chondrus crispus, Fucus sp.) collected on 17 sampling points along the French coast of the English Channel in 2012 and 2013 were assessed on their suitability as bioindicators of N pollution in coastal areas. A sine function applied for δ(15)N time series data showed for all the species the same seasonal trend with lowest δ(15)N values in April and highest in summer but with no significant interspecific differences of amplitude (α) and phase angle (ϕ). This model provides a useful tool for monitoring the inter-annual changes of N pollution. An interspecific variability of δ(15)N values was observed, probably due to their tolerance to emersion. An in vitro study for comparing the kinetic acquisition of the isotopic signal and N uptake mechanisms of each species underlined the influence of algal physiology on the δ(15)N interspecific variability.

}, issn = {1879-3363}, doi = {10.1016/j.marpolbul.2016.06.006}, author = {St{\'e}phanie Lemesle and Erraud, Alexandre and Isabelle Mussio and Anne-Marie Rusig and Pascal Claquin} } @article {3865, title = {Impact of seaweed beachings on dynamics of δ(15)N isotopic signatures in marine macroalgae.}, journal = {Mar Pollut Bull}, year = {2015}, month = {2015 Jun 18}, abstract = {

A fine-scale survey of δ(15)N, δ(13)C, tissue-N in seaweeds was conducted using samples from 17 sampling points at two sites (Grandcamp-Maisy (GM), Courseulles/Mer (COU)) along the French coast of the English Channel in 2012 and 2013. Partial triadic analysis was performed on the parameter data sets and revealed the functioning of three areas: one estuary (EstA) and two rocky areas (GM(*), COU(*)). In contrast to oceanic and anthropogenic reference points similar temporal dynamics characterized δ(15)N signatures and N contents at GM(*) and COU(*). Nutrient dynamics were similar: the N-concentrations in seawater originated from the River Seine and local coastal rivers while P-concentrations mainly from these local rivers. δ(15)N at GM(*) were linked to turbidity suggesting inputs of autochthonous organic matter from large-scale summer seaweed beachings made up of a mixture of Rhodophyta, Phaeophyta and Chlorophyta species. This study highlights the coupling between seaweed beachings and nitrogen sources of intertidal macroalgae.

}, issn = {1879-3363}, doi = {10.1016/j.marpolbul.2015.06.010}, author = {St{\'e}phanie Lemesle and Isabelle Mussio and Anne-Marie Rusig and Florence Menet-N{\'e}d{\'e}lec and Pascal Claquin} }