|
. (2023). TESS spots a mini- interior to a hot saturn in the TOI-2000 system (Vol. 524).
|
. (2023). Service of rapid magnetic variations, an update (Vol. 10).
Abstract: Rapid magnetic variations on Earth are intimately linked with solar activity and this is one of the main topics in Space Weather research. Modelling and forecasting these phenomena are vital in our technological society. The Service of Rapid Magnetic Variations provides lists of these remarkable magnetic events in a continuous way in what constitutes a long geophysical series that began in the late 19th century. Although the aim of this Service remains unchanged, methods have changed with time. Here, we describe the recent evolution of the Service, its database and the latest works carried out to improve the products delivered to the scientific society.
Keywords: event detection ISGI – International Service of Geomagnetic Indices rapid magnetic variations solar flare effects storm sudden commencements
Programme: 139
|
. (2023). Selection processes of Arctic seasonal glacier snowpack bacterial communities (Vol. 11).
Abstract: Arctic snowpack microbial communities are continually subject to dynamic chemical and microbial input from the atmosphere. As such, the factors that contribute to structuring their microbial communities are complex and have yet to be completely resolved. These snowpack communities can be used to evaluate whether they fit niche-based or neutral assembly theories.
Keywords: Arctic Microbial ecology Neutral processes Niche-based selection Snow
Programme: 1192
|
|
Apsara Sharma Dhakal, Irene Molinari, Lapo Boschi. (2023). Seismic source mapping by surface wave time reversal: application to the great 2004 Sumatra earthquake (Vol. 233).
|
|
Alison F. Banwell, Nander Wever, Devon Dunmire, Ghislain Picard. (2023). Quantifying Antarctic-Wide Ice-Shelf Surface Melt Volume Using Microwave and Firn Model Data: 1980 to 2021 (Vol. 50).
|
|
. (2023). Probing the limits of sampling gaseous elemental mercury passively in the remote atmosphere (Vol. 3).
|
. (2023). Plant consumer innovation in skuas (Vol. 164). Bachelor's thesis, , .
Keywords: Animal innovation Consumer innovation Field observation Novel food Stercorarius antarcticus lonnbergi
Programme: 109,354
|
. (2023). Pre-assessments of plant conservation status in islands: the case of French Overseas Territories (Vol. 32).
Keywords: Endemics French overseas territories Islands Pre-assessments Red List Tracheophytes
Programme: 136
|
Y. Klanten, R.-M. Couture, K. S. Christoffersen, W. F. Vincent, D. Antoniades. (2023). Oxygen Depletion in Arctic Lakes: Circumpolar Trends, Biogeochemical Processes, and Implications of Climate Change (Vol. 37).
Abstract: Polar amplification of climate change has the potential to cause large-scale shifts in the dissolved oxygen (DO) dynamics of Arctic lakes, with implications for fish survival, greenhouse gas production, and drinking water quality. While DO is also a sentinel of environmental changes of physical, chemical, and biological nature (e.g., ice cover, temperature, dissolved organic carbon, photosynthesis, and respiration), no synthesis exists of current knowledge of DO dynamics across the diverse freshwater systems of the Arctic. We thus conducted a systematic review of the literature that yielded DO data from 167 sites north of the Subarctic limit (based on vegetation zones), spanning 76 years and including 40 sites with time series. The compilation revealed insufficient observations for adequate representativeness of oxygen dynamics over Arctic ecosystem gradients. We described the main processes controlling DO budgets of Arctic lakes and tested relationships of summer oxygen depletion with maximum depth and latitude. The meta-analysis showed that most sites with low O2 concentrations were shallow (<10 m) and situated toward the southern end of the latitudinal gradient. Permanently stratified lakes with deep, perennially anoxic basins were located toward the northern end of the gradient. By way of a conceptual model, we identified the direct and indirect drivers and mechanisms that lead to changes in oxygen budgets in the context of the warming Arctic. This comprehensive update on available data allowed us to suggest future research directions and recommend the use of moored instruments for continuous all-season observations, combined with modeling, remote sensing, and paleo-reconstructions.
Keywords: Arctic lakes biochemical processes climate change dissolved oxygen freshwater meta-analysis
Programme: 1042
|
. (2023). Mercury Contamination Challenges the Behavioral Response of a Keystone Species to Arctic Climate Change (Vol. 57).
Abstract: Combined effects of multiple, climate change-associated stressors are of mounting concern, especially in Arctic ecosystems. Elevated mercury (Hg) exposure in Arctic animals could affect behavioral responses to changes in foraging landscapes caused by climate change, generating interactive effects on behavior and population resilience. We investigated this hypothesis in little auks (Alle alle), a keystone Arctic seabird. We compiled behavioral data for 44 birds across 5 years using accelerometers while also quantifying blood Hg and environmental conditions. Warm sea surface temperature (SST) and low sea ice coverage reshaped time activity budgets (TABs) and diving patterns, causing decreased resting, increased flight, and longer dives. Mercury contamination was not associated with TABs. However, highly contaminated birds lengthened interdive breaks when making long dives, suggesting Hg-induced physiological limitations. As dive durations increased with warm SST, subtle toxicological effects threaten to increasingly constrain diving and foraging efficiency as climate change progresses, with ecosystem-wide repercussions.
Programme: 388
|
