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Title |
Sub-mesoscale fronts modify elephant seals foraging behavior |
Type |
Journal |
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Year |
2019 |
Publication |
Limnology and Oceanography Letters |
Abbreviated Journal |
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Volume |
4 |
Issue |
6 |
Pages |
193-204 |
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Programme |
109,1201 |
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Bachelor's thesis |
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2378-2242 |
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Approved |
yes |
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Call Number |
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Serial |
7723 |
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Title |
DNA from lake sediments reveals long-term ecosystem changes after a biological invasion |
Type |
Journal |
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Year |
2018 |
Publication |
Science Advances |
Abbreviated Journal |
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Volume |
4 |
Issue |
5 |
Pages |
eaar4292 |
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Abstract |
What are the long-term consequences of invasive species? After invasion, how long do ecosystems require to reach a new equilibrium? Answering these questions requires long-term, high-resolution data that are vanishingly rare. We combined the analysis of environmental DNA extracted from a lake sediment core, coprophilous fungi, and sedimentological analyses to reconstruct 600 years of ecosystem dynamics on a sub-Antarctic island and to identify the impact of invasive rabbits. Plant communities remained stable from AD 1400 until the 1940s, when the DNA of invasive rabbits was detected in sediments. Rabbit detection corresponded to abrupt changes of plant communities, with a continuous decline of a dominant plant species. Furthermore, erosion rate abruptly increased with rabbit abundance. Rabbit impacts were very fast and were stronger than the effects of climate change during the 20th century. Lake sediments can allow an integrated temporal analysis of ecosystems, revealing the impact of invasive species over time and improving our understanding of underlying mechanisms. Rabbits have had a stronger impact on the landscape and plant communities of a remote island than one century of climate change. Rabbits have had a stronger impact on the landscape and plant communities of a remote island than one century of climate change. |
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1094 |
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ISSN |
2375-2548 |
ISBN |
2375-2548 |
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Approved |
yes |
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Call Number |
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Serial |
7353 |
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Title |
Tick-borne zoonotic flaviviruses and Borrelia infections in wildlife hosts: What have field studies contributed? |
Type |
Journal |
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Year |
2024 |
Publication |
One Health |
Abbreviated Journal |
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Volume |
18 |
Issue |
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Pages |
100747 |
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Keywords |
Flavivirus Host Reservoir Sentinel Tick-borne diseases Wildlife |
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Abstract |
Tick-borne flaviviruses and Borrelia spp. are globally spread pathogens of zoonotic potential that are maintained by a transmission cycle at the interface between ticks and vertebrate hosts, mainly wild animals. Aside data on pathogen burden in ticks, information on the status of various hosts relative to infection is important to acquire. We reviewed how those infections have been studied in wildlife host species in the field to discuss how collected data provided relevant epidemiological information and to identify needs for further studies. The literature was screened for observational studies on pathogen or antibody detection for tick-borne Borrelia spp. and flaviviruses in wildlife host animals. Overall, Borrelia spp. were more studied (73% of case studies, representing 297 host species) than flaviviruses (27% of case studies, representing 114 host species). Studies on both Borrelia spp. and flaviviruses focused mainly on the same species, namely bank vole and yellow-necked mouse. Most studies were order-specific and cross-sectional, reporting prevalence at various locations, but with little insight into the underlying epidemiological dynamics. Host species with potential to act as reservoir hosts of these pathogens were neglected, notably birds. We highlight the necessity of collecting both demographics and infection data in wildlife studies, and to consider communities of species, to better estimate zoonotic risk potential in the One Health context. |
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Programme |
1151 |
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Edition |
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ISSN |
2352-7714 |
ISBN |
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Approved |
yes |
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Call Number |
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Serial |
8779 |
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Title |
CameraTransform: A Python package for perspective corrections and image mapping |
Type |
Journal |
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Year |
2019 |
Publication |
SoftwareX |
Abbreviated Journal |
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Volume |
10 |
Issue |
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Pages |
100333 |
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Keywords |
Camera lens distortions Geo-referencing Perspective projection Quantitative image analysis |
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Abstract |
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Programme |
137 |
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Thesis |
Bachelor's thesis |
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ISSN |
2352-7110 |
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Approved |
yes |
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Call Number |
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Serial |
7596 |
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Author |
Liubomira Romanova, Vincent Balter, Laurent Simon, Patrice Gerard, Nadejda Pokatilova, Eric Crubezy |
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Title |
Diet of autochthonous populations in Yakutia using isotopic, ethnographic, historical and archaeological data |
Type |
Journal |
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Year |
2019 |
Publication |
Journal of Archaeological Science: Reports |
Abbreviated Journal |
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Volume |
28 |
Issue |
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Pages |
102022 |
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Keywords |
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Abstract |
This article investigates, for the first time, the diet of the Yakut population between the 15th and 19th centuries AD. Analyses of the stable isotopes of carbon and nitrogen in human and animal bone collagen were used for the study. The stable isotope values were then compared through four historical periods, three geographical areas, sexes, and socio-economic groups determined by the presence or absence of artefacts in the excavated tombs. The results highlight the variety of dietary practices among the Yakuts. There are significant differences between the North, characterised mostly by the consumption of herbivores, the Viluy region, where fish had an important role, and Central Yakutia with a diversified diet. No differences were seen between the diets of men and women. The group of elites had a stable diet based on meat and milk consumption. Samples before 1700AD had ?15N values that were higher than samples from other periods, probably due to greater consumption of fish and foal meat. These data were compared with ethnographic, historical and archaeological information so as to better depict the diet of these past populations. |
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Programme |
1038 |
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ISSN |
2352-409X |
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Approved |
yes |
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Call Number |
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Serial |
7700 |
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Title |
A geochemical investigation of an Early Inuit semi-subterranean winter dwelling in a periglacial context |
Type |
Journal |
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Year |
2020 |
Publication |
Journal of archaeological science: reports |
Abbreviated Journal |
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Volume |
33 |
Issue |
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Pages |
102552 |
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Keywords |
C-N analysis Cryosolic soils geochemistry FTIR ICP-AES Inuit archaeology Nunavik Semi-subterranean house |
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Abstract |
Geochemical investigations using FTIR, ICP-AES and C-N analyses were carried out on a single-family semi-subterranean Inuit house in order to assess the contribution of Inuit domestic activities in the formation of cryosolic soils in a periglacial archaeological context (Kuuvik Bay, Nunavik, Canada). The geochemical elements data were analyzed using box plots and enrichment factors. The information was also summarized and visualized through principal component analysis (PCA). These complementary statistical approaches provided evidence of a moderate but identifiable and significant imprint of Inuit domestic activities on soil geochemistry. The box plots indicate moderate Ca, Mn, Cu and P enrichments and more noticeable Mg, Fe and S enrichments. These enrichment factors and the ICP-AES data show that samples from the peripheral wall and the tunnel entrance of the house and its vicinity are significantly enriched. While FTIR analysis highlighted the main soil element contents (e.g., organic and mineral components), ICP-AES analysis was used to further document variations in the background elements throughout the site. However, the obtained results do not allow us to undertake a spatial analysis of Inuit activities or to describe them in detail. In addition, the data highlight the difficulty of documenting the natural variability of element contents in cryosolic soils, especially in archaeological contexts. Cryo-pedological processes in the active layer as well as house cleaning and nutrient inputs resulting from Inuit occupations may have attenuated chemical signatures of previous Inuit domestic activities. |
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Programme |
1080 |
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Campaign |
LOTECHAIN |
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Thesis |
Bachelor's thesis |
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ISSN |
2352-409X |
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Approved |
yes |
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Call Number |
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Serial |
8206 |
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Title |
Transcriptomic data analysis and differential gene expression of antioxidant pathways in king penguin juveniles (Aptenodytes patagonicus) before and after acclimatization to marine life |
Type |
Journal |
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Year |
2016 |
Publication |
Data in Brief |
Abbreviated Journal |
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Volume |
9 |
Issue |
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Pages |
549-555 |
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Keywords |
Antioxidant pathways Microarray Muscle Penguin |
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Abstract |
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Programme |
131 |
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ISSN |
2352-3409 |
ISBN |
2352-3409 |
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Approved |
yes |
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Call Number |
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Serial |
7222 |
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Author |
Colin Southwell, Louise Emmerson, Akinori Takahashi, Christophe Barbraud, Karine Delord, Henri Weimerskirch |
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Title |
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Type |
Journal |
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Year |
2017 |
Publication |
Global Ecology and Conservation |
Abbreviated Journal |
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Volume |
9 |
Issue |
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Pages |
104-115 |
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Keywords |
Abundance Area protection Fisheries management Seabird |
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Abstract |
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Programme |
109 |
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ISSN |
2351-9894 |
ISBN |
2351-9894 |
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Approved |
yes |
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Call Number |
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Serial |
6649 |
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Author |
Colin Southwell, Louise Emmerson, Akinori Takahashi, Christophe Barbraud, Karine Delord, Henri Weimerskirch |
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Title |
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Type |
Journal |
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Year |
2017 |
Publication |
Global Ecology and Conservation |
Abbreviated Journal |
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Volume |
9 |
Issue |
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Pages |
104-115 |
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Keywords |
Abundance Area protection Fisheries management Seabird |
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Abstract |
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Programme |
109 |
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ISSN |
2351-9894 |
ISBN |
2351-9894 |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
7179 |
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Author |
G. Hubert, S. Aubry |
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Title |
Analysis of Solar and Galactic Cosmic Rays Induced Atmospheric Ionizing Radiation: Impacts for Typical Transatlantic Flights and Antarctica Environment |
Type |
Journal |
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Year |
2017 |
Publication |
Jsm environmental science & ecology |
Abbreviated Journal |
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Volume |
5 |
Issue |
3 |
Pages |
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Keywords |
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Abstract |
This paper analyses atmospheric ionizing radiations induced by Galactic and Solar Cosmic Rays (GCR and SCR, respectively) thanks to continuous measurements of neutron spectrum operated in high-altitude stations. Analyses are reinforced using GCR and SCR models, and extensive air shower descriptions
based on nuclear transport simulations. First analyses were focused on neutron fluxes as function of altitude. Secondly, atmospheric ionizing radiation impacts on biological doses during quiet period and extreme solar events are presented. On the basis of the relevant comparisons conducted for ambient dose equivalent
during quiet solar activity, but also for the comic ray variations calculated and recorded on neutron monitor (NM) during Ground Level Enhancement (GLE) event. GLE 5 model was applied to London ↔ New-york flight dose calculations. All of these results show that dose values vary drastically, on the one hand with the route path (latitude, longitude altitude), on the other hand with the phasing of the solar event. Specific case of Antarctica is discussed because it combines both the high altitude and the very low magnetic field. Analyses show that ionizing radiation in Antarctica environment can be a problematic from the point of view of the human dose, which exerts classical recommendations established for public. This highlights the importance of monitoring atmospheric ionizing radiation, more particularly extreme solar events, then to develop semi-empirical and particle transport method for reliable calculation of dose levels. |
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Programme |
1112 |
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Edition |
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ISSN |
2333-7141 |
ISBN |
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Approved |
yes |
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Call Number |
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Serial |
7433 |
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| Permanent link to this record |
