P Léopold

Evidence of separate influence of moon and sun on light synchronization of mussel’s daily rhythm during the polar night

Damien Tran, Hector Andrade, Lionel Camus, P Léopold et autres

Marine organisms living at high latitudes are faced with a light climate that undergoes drastic annual changes, especially during the polar night (PN) when the sun remains below the horizon for months. This raises the question of a possible synchronization and entrainment …

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Seasonal cruise Q2 2021

Martin Ludvigsen, Philipp Assmy, Matthew James Samuel Adams, Martí Amargant-Arumí et autres

The spring season was the target for the Nansen Legacy cruise organized in late April and first half of May 2021 following the transect defined for this series of cruises to capture the variations of the year sampling physical, biological and chemical …

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Second asymptomatic carotid surgery trial (ACST-2): a randomised comparison of carotid artery stenting versus carotid endarterectomy

Alison Halliday, Richard Bulbulia, Leo H. Bonati, Johanna Chester et autres

BACKGROUND: Among asymptomatic patients with severe carotid artery stenosis but no recent stroke or transient cerebral ischaemia, either carotid artery stenting (CAS) or carotid endarterectomy (CEA) can restore patency and reduce long-term stroke risks. However, from recent national registry data, each option …

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Winter-Spring Development of the Zooplankton Community Below Sea Ice in the Arctic Ocean

Haakon Hop, Anette Wold, Amélie Meyer, Allison Bailey et autres

The impact of the rapidly changing Arctic on zooplankton community structure and seasonal behaviour is not yet understood. Here we examine 6 months of under-ice zooplankton observations from the N-ICE2015 expedition (January to June 2015) in the Nansen Basin and on the …

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The Effects of Nest Location and Beach Environment on Hatching Success for Leatherback (Dermochelys Coriacea) and Green (Chelonia Mydas) Sea Turtles on Bioko Island, Equatorial Guinea

Callie A. Veelenturf, Elizabeth M. Sinclair, P Léopold, Frank V. Paladino et autres

Abstract Hatching success in sea turtles is hindered by a variety of biotic and abiotic factors. This study of the nesting ecology of leatherback (Dermochelys coriacea) and green (Chelonia mydas) sea turtles, investigated how several environmental factors and beach characteristics on Bioko …

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Growth and behaviour of blue mussels, a re-emerging polar resident, follow a strong annual rhythm shaped by the extreme high Arctic light regime

Damien Tran, Hector Andrade, Guillaume Durier, Pierre Ciret et autres

Polar regions are currently warming at a rate above the global average. One issue of concern is the consequences on biodiversity in relation to the Northward latitudinal shift in distribution of temperate species. In the present study, lasting almost two years, we …

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SM_Row data_dailyVOA&growth from Growth and behaviour of blue mussels, a re-emerging polar resident, follow a strong annual rhythm shaped by the extreme high Arctic light regime

Damien Tran, Hector Andrade, Guillaume Durier, Pierre Ciret et autres

Polar regions are currently warming at a rate above the global average. One issue of concern is the consequences on biodiversity in relation to the Northward latitudinal shift in distribution of temperate species. In the present study, lasting almost two years, we …

High Arctic Mytilus spp.: occurrence, distribution and history of dispersal

P Léopold, Paul E. Renaud, William G. Ambrose, Jørgen Berge

Many marine species are known to change their distribution in response to changing climatic conditions. One such example is the blue mussel Mytilus spp., spreading northward coincident with an increase in ocean temperatures. On Svalbard, the first living specimens of Mytilus spp. …

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An observational study showed that explaining randomization using gambling-related metaphors and computer-agency descriptions impeded randomized clinical trial recruitment

Marcus Jepson, Daisy Elliott, Carmel Conefrey, Julia Wade et autres

OBJECTIVES: To explore how the concept of randomization is described by clinicians and understood by patients in randomized controlled trials (RCTs) and how it contributes to patient understanding and recruitment. STUDY DESIGN AND SETTING: Qualitative analysis of 73 audio recordings of recruitment …

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Ankle Brachial Pressure Index - a missed opportunity?

Patrick Chong, David Gerrard, P Léopold

MASS and the implications for non-networked vascular units in the UK

Patrick F S Chong, David E. Gerrard, P Léopold

Recruitment of benthic invertebrates in high Arctic fjords: Relation to temperature, depth, and season

Kirstin S. Meyer, Andrew K. Sweetman, Piotr Kukliński, P Léopold et autres

Abstract In the high Arctic, recruitment of hard‐bottom benthic organisms has been studied at single locations, but little is known about how it varies spatially or temporally, or how it is influenced by abiotic factors. In this study, settlement plates were simultaneously …

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