Augustin Lafond
A5017902999- Marine and coastal ecosystems
- Arctic and Antarctic ice dynamics
- Ocean Acidification Effects and Responses
- Diatoms and Algae Research
- Geology and Paleoclimatology Research
- Food Industry and Aquatic Biology
- Paleontology and Stratigraphy of Fossils
- Marine and environmental studies
- Marine Biology and Ecology Research
- Arctic and Russian Policy Studies
- Microbial Community Ecology and Physiology
- Methane Hydrates and Related Phenomena
Institut Méditerranéen d’Océanologie
2020-2022
Centre National de la Recherche Scientifique
2019-2022
Université de Toulon
2019-2022
Aix-Marseille Université
2019-2022
Institut de Recherche pour le Développement
2019-2022
Abstract. The Green Edge initiative was developed to investigate the processes controlling primary productivity and fate of organic matter produced during Arctic phytoplankton spring bloom (PSB) determine its role in ecosystem. Two field campaigns were conducted 2015 2016 at an ice camp located on landfast sea southeast Qikiqtarjuaq Island Baffin Bay (67.4797∘ N, 63.7895∘ W). During both expeditions, a large suite physical, chemical biological variables measured beneath consolidated sea-ice...
The Arctic Ocean is particularly affected by climate change, with changes in sea ice cover expected to impact phytoplankton primary production. During the Green Edge expedition, development of late spring–early summer diatom bloom was studied relation retreat multiple transects across marginal zone. Biogenic silica concentrations and uptake rates were measured. In addition, assemblage structures their associated carbon biomass determined, along taxon-specific contributions total biogenic...
In the last decades, Arctic Ocean has been affected by climate change, leading to alterations in sea ice cover that influence phytoplankton spring bloom, its associated food web, and therefore carbon sequestration. During Green Edge 2016 expedition central Baffin Bay, bloom development around edge was followed along 7 transects from open water ice-pack interior. Here, we studied some of processes driving aggregation, using aggregate copepod distribution profiles obtained with an underwater...
Abstract. The Green Edge project was designed to investigate the onset, life, and fate of a phytoplankton spring bloom (PSB) in Arctic Ocean. lengthening ice-free period warming seawater, amongst other factors, have induced major changes Ocean biology over last decades. Because PSB is at base food chain, it crucial understand how environment will affect it. large multidisciplinary, collaborative bringing researchers technicians from 28 different institutions seven countries together, aiming...
Abstract. The Green Edge initiative was developed to investigate the processes controlling primary productivity and fate of organic matter produced during Arctic phytoplankton spring bloom (PSB) determine its role in ecosystem. Two field campaigns were conducted 2015 2016 at an ice camp located on landfast sea southeast Qikiqtarjuaq Island Baffin Bay (67.4797N, 63.7895W). During both expeditions, a large suite physical, chemical biological variables measured beneath consolidated cover from...
This study aimed to quantify the impact of copepod grazing on productivity phytoplankton during an under sea-ice spring bloom (USPB) in western Baffin Bay. To positive and/or negative impacts primary production and interaction between species, we sampled seawater zooplankton landfast sea ice every 2–3 days May 24 July 10, 2016. Samples were analyzed for estimation production, chlorophyll-a (chl-a) concentration, diatom abundance, fecal pellet (FP) production/grazing rate. Analyses chl-a FP...