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Author |
Y. Klanten, R.-M. Couture, K. S. Christoffersen, W. F. Vincent, D. Antoniades |
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Title |
Oxygen Depletion in Arctic Lakes: Circumpolar Trends, Biogeochemical Processes, and Implications of Climate Change |
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Journal |
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Year |
2023 |
Publication |
Global Biogeochemical Cycles |
Abbreviated Journal |
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Volume |
37 |
Issue |
5 |
Pages |
e2022GB007616 |
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Keywords |
Arctic lakes biochemical processes climate change dissolved oxygen freshwater meta-analysis |
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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. |
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1042 |
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1944-9224 |
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yes |
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8633 |
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Title |
Plant consumer innovation in skuas |
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Journal |
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Year |
2023 |
Publication |
Journal of Ornithology |
Abbreviated Journal |
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Volume |
164 |
Issue |
3 |
Pages |
717-719 |
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Keywords |
Animal innovation Consumer innovation Field observation Novel food Stercorarius antarcticus lonnbergi |
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109,354 |
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Bachelor's thesis |
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2193-7206 |
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yes |
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8635 |
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Title |
Pre-assessments of plant conservation status in islands: the case of French Overseas Territories |
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Journal |
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Year |
2023 |
Publication |
Biodiversity and Conservation |
Abbreviated Journal |
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Volume |
32 |
Issue |
4 |
Pages |
1165-1187 |
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Keywords |
Endemics French overseas territories Islands Pre-assessments Red List Tracheophytes |
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136 |
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ISSN |
1572-9710 |
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yes |
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8634 |
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Title |
Probing the limits of sampling gaseous elemental mercury passively in the remote atmosphere |
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Year |
2023 |
Publication |
Environmental Science: Atmospheres |
Abbreviated Journal |
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Volume |
3 |
Issue |
2 |
Pages |
268-281 |
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Programme |
1028 |
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ISSN |
2634-3606 |
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yes |
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8636 |
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Author |
Alison F. Banwell, Nander Wever, Devon Dunmire, Ghislain Picard |
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Title |
Quantifying Antarctic-Wide Ice-Shelf Surface Melt Volume Using Microwave and Firn Model Data: 1980 to 2021 |
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Journal |
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Year |
2023 |
Publication |
Geophysical Research Letters |
Abbreviated Journal |
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Volume |
50 |
Issue |
12 |
Pages |
e2023GL102744 |
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1110 |
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ISSN |
1944-8007 |
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yes |
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Call Number |
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Serial |
8637 |
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Author |
Apsara Sharma Dhakal, Irene Molinari, Lapo Boschi |
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Title |
Seismic source mapping by surface wave time reversal: application to the great 2004 Sumatra earthquake |
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Journal |
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Year |
2023 |
Publication |
Geophysical Journal International |
Abbreviated Journal |
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Volume |
233 |
Issue |
2 |
Pages |
1018-1035 |
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Programme |
133 |
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ISSN |
0956-540X |
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Approved |
yes |
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Call Number |
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Serial |
8638 |
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Author |
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Title |
Selection processes of Arctic seasonal glacier snowpack bacterial communities |
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Journal |
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Year |
2023 |
Publication |
Microbiome |
Abbreviated Journal |
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Volume |
11 |
Issue |
1 |
Pages |
35 |
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Keywords |
Arctic Microbial ecology Neutral processes Niche-based selection Snow |
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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. |
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Programme |
1192 |
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ISSN |
2049-2618 |
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yes |
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Call Number |
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Serial |
8639 |
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Title |
Service of rapid magnetic variations, an update |
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Journal |
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Year |
2023 |
Publication |
Geoscience Data Journal |
Abbreviated Journal |
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Volume |
10 |
Issue |
1 |
Pages |
99-113 |
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Keywords |
event detection ISGI – International Service of Geomagnetic Indices rapid magnetic variations solar flare effects storm sudden commencements |
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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. |
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Programme |
139 |
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ISSN |
2049-6060 |
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yes |
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Call Number |
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Serial |
8640 |
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Title |
TESS spots a mini- interior to a hot saturn in the TOI-2000 system |
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Journal |
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Year |
2023 |
Publication |
Monthly Notices of the Royal Astronomical Society |
Abbreviated Journal |
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Volume |
524 |
Issue |
1 |
Pages |
1113-1138 |
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Abstract |
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Programme |
1066 |
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ISSN |
0035-8711 |
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yes |
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8641 |
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Title |
The effect of environmental pollution on gene expression of seabirds: A review |
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Journal |
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Year |
2023 |
Publication |
Marine Environmental Research |
Abbreviated Journal |
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Volume |
189 |
Issue |
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Pages |
106067 |
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Keywords |
Biotransformation Long-lived animals Marine pollution Metabolic pathways Model species Oxidative stress Seabirds |
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Abstract |
One of the biggest challenges for ecotoxicologists is to detect harmful effects of contaminants on individual organisms before they have caused significant harm to natural populations. One possible approach for discovering sub-lethal, negative health effects of pollutants is to study gene expression, to identify metabolic pathways and physiological processes affected by contaminants. Seabirds are essential components of ecosystems but highly threatened by environmental changes. Being at the top of the food chain and exhibiting a slow pace of life, they are highly exposed to contaminants and to their ultimate impacts on populations. Here we provide an overview of the currently available seabird-related gene expression studies in the context of environmental pollution. We show that studies conducted, so far, mainly focus on a small selection of xenobiotic metabolism genes, often using lethal sampling protocols, while the greater promise of gene expression studies for wild species may lie in non-invasive procedures focusing on a wider range of physiological processes. However, as whole genome approaches might still be too expensive for large-scale assessments, we also bring out the most promising candidate biomarker genes for future studies. Based on the biased geographical representativeness of the current literature, we suggest expanding studies to temperate and tropical latitudes and urban environments. Also, as links with fitness traits are very rare in the current literature, but would be highly relevant for regulatory purposes, we point to an urgent need for establishing long-term monitoring programs in seabirds that would link pollutant exposure and gene expression to fitness traits. |
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388 |
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ISSN |
0141-1136 |
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yes |
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8642 |
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