Aude Boivin-Rioux

Fisheries and Oceans Canada | DFO · Maurice Lamontagne Institute (MLI)

Harmful algal blooms (HABs) are a threat to human health, local economies, and coastal ecosystems. Generalized additive mixed models (GAMMs) were fitted using a 24-y database in order to predict future occurrences of three distinct species of HABs on the Canadian East Coast, the dinoflagellates Dinophysis acuminata and D. norvegica, and the diatom...

Alexandrium catenella produces paralytic shellfish toxins that affect marine fisheries and aquaculture as well as ecosystem and human health worldwide. This harmful algal species is extremely sensitive to environmental conditions and potentially to future climate change. Using a generalised additive mixed model (GAMM) we studied the potential effec...

Motivated by the need to predict how the Arctic atmosphere will change in a warming world, this article summarizes recent advances made by the research consortium NETCARE (Network on Climate and Aerosols: Addressing Key Uncertainties in Remote Canadian Environments) that contribute to our fundamental understanding of Arctic aerosol particles as the...

Motivated by the need to predict how the Arctic atmosphere will change in a warming world, this article summarizes recent advances made by the research consortium NETCARE (Network on Climate and Aerosols: Addressing Key Uncertainties in Remote Canadian Environments) that contribute to our fundamental understanding of Arctic aerosol particles as the...

Rapid changes in ice cover, freshwater input and sea temperature in the Canadian High Arctic are affecting phytoplankton communities (Blais et al. 2017). On the one hand, the higher exposure of sea surface to wind forcing could deepen the surface mixed layer, rendering it more difficult for phytoplankton to harvest light, but easier for them to acc...

La diminution du couvert de glace dans l’Arctique canadien a une influence importante sur les caractéristiques physico-chimiques de la colonne d’eau (Carmack et McLaughlin 2011). La région des Eaux du Nord (NOW) ainsi que celle du détroit de Nares étant désormais dépourvues de glace en été, il devient intéressant d’essayer de comprendre comment ces...

NetCare has successfully brought together scientists from various fields to uncover the uncertainties surrounding the Arctic’s ocean-atmosphere boundary. Given that climate change has already had a significant influence on the Arctic, a key uncertainty remains: how will phytoplankton communities respond to environmental variations caused by climate...

The source strength and capability of aerosol particles in the Arctic to act as cloud condensation nuclei have important implications for understanding the indirect aerosol–cloud effect within the polar climate system. It has been shown in several Arctic regions that ultrafine particle (UFP) formation and growth is a key contributor to aerosol numb...

Climate change is affecting the Arctic Ocean at an unprecedented rate. Freshening of the sea surface layer by runoff and ice melt is known to affect vertical stratification strength and could trigger a shift towards an oligotrophic ocean. Such changes might affect primary producers and their ability to export carbon to the deep ocean. We studied th...

L’océan Arctique est l’une des régions les plus touchées par les changements climatiques. Dans cet écosystème, le phytoplancton permet de séquestrer le carbone atmosphérique via la pompe biologique. À l’inverse, les organismes hétérotrophes libèrent du carbone par la respiration. L’augmentation de la température, de la stratification et de l’acidif...

Problématique : Depuis 2011, des dépistages «multisites» sont effectués avant d’envisager toute levée d’isolement ou retrait d’alerte porteur, comme mesure supplémentaire de contrôle du taux de transmission du SARM. Cette étude permettra d’évaluer la sensibilité du dépistage «multisites» SARM et l’impact sur sa transmission. Méthode : Une étude rét...