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Title |
Precise Transit and Radial-velocity Characterization of a Resonant Pair: The Warm Jupiter TOI-216c and Eccentric Warm Neptune TOI-216b |
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Journal |
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Year |
2021 |
Publication |
The Astronomical Journal |
Abbreviated Journal |
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Volume |
161 |
Issue |
4 |
Pages |
161 |
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1066 |
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1538-3881 |
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yes |
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8194 |
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Author |
F. Thibon, L. Weppe, N. Vigier, C. Churlaud, T. Lacoue-Labarthe, M. Metian, Y. Cherel, P. Bustamante |
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Title |
Large-scale survey of lithium concentrations in marine organisms |
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Journal |
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Year |
2021 |
Publication |
Science of The Total Environment |
Abbreviated Journal |
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Volume |
751 |
Issue |
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Pages |
141453 |
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Keywords |
Bio-reduction Bioaccumulation Biogeography Ecotoxicology Multiple correspondence analyses Trophic webs |
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109 |
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0048-9697 |
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yes |
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7944 |
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Title |
Year-round distribution of Northeast Atlantic seabird populations: applications for population management and marine spatial planning |
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Journal |
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Year |
2021 |
Publication |
Marine Ecology Progress Series |
Abbreviated Journal |
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Volume |
676 |
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Pages |
255-276 |
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Keywords |
Alle alle Fratercula arctica Fulmarus glacialis Marine spatial planning Rissa tridactyla SEATRACK Uria aalge Uria lomvia |
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Abstract ![sorted by Abstract field, ascending order (up)](img/sort_asc.gif) |
Tracking data of marine predators are increasingly used in marine spatial management. We developed a spatial data set with estimates of the monthly distribution of 6 pelagic seabird species breeding in the Northeast Atlantic. The data set was based on year-round global location sensor (GLS) tracking data of 2356 adult seabirds from 2006-2019 from a network of seabird colonies, data describing the physical environment and data on seabird population sizes. Tracking and environmental data were combined in monthly species distribution models (SDMs). Cross-validations were used to assess the transferability of models between years and breeding locations. The analyses showed that birds from colonies close to each other (<500 km apart) used the same nonbreeding habitats, while birds from distant colonies (>1000 km) used colony-specific and, in many cases, non-overlapping habitats. Based on these results, the SDM from the nearest model colony was used to predict the distribution of all seabird colonies lying within a species-specific cut-off distance (400-500 km). Uncertainties in the predictions were estimated by cluster bootstrap sampling. The resulting data set consisted of 4692 map layers, each layer predicting the densities of birds from a given species, colony and month across the North Atlantic. This data set represents the annual distribution of 23.5 million adult pelagic seabirds, or 87% of the Northeast Atlantic breeding population of the study species. We show how the data set can be used in population and spatial management applications, including the detection of population-specific nonbreeding habitats and identifying populations influenced by marine protected areas. |
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330 |
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0171-8630, 1616-1599 |
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yes |
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Serial |
8425 |
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Title |
Food source diversity, trophic plasticity, and omnivory enhance the stability of a shallow benthic food web from a high-Arctic fjord exposed to freshwater inputs |
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Journal |
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Year |
2021 |
Publication |
Limnology and Oceanography |
Abbreviated Journal |
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Volume |
66 |
Issue |
S1 |
Pages |
S259-S272 |
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Abstract ![sorted by Abstract field, ascending order (up)](img/sort_asc.gif) |
Under climate change, many Arctic coastal ecosystems receive increasing amounts of freshwater, with ecological consequences that remain poorly understood. In this study, we investigated how freshwater inputs may affect the small-scale structure of benthic food webs in a low-production high-Arctic fjord (Young Sound, NE Greenland). We seasonally sampled benthic invertebrates from two stations receiving contrasting freshwater inputs: an inner station exposed to turbid and nutrient-depleted freshwater flows and an outer station exposed to lower terrestrial influences. Benthic food web structure was described using a stable isotope approach (?13C and ?15N), Bayesian models, and community-wide metrics. The results revealed the spatially and temporally homogeneous structure of the benthic food web, characterized by high trophic diversity (i.e., a wide community isotopic niche). Such temporal stability and spatial homogeneity mirrors the high degree of trophic plasticity and omnivory of benthic consumers that allows the maintenance of several carbon pathways through the food web despite different food availability. Furthermore, potential large inputs of shelf organic matter together with local benthic primary production (i.e., macroalgae and presumably microphytobenthos) may considerably increase the stability of the benthic food web by providing alternative food sources to locally runoff-impacted pelagic primary production. Future studies should assess beyond which threshold limit a larger increase in freshwater inputs might cancel out these stability factors and lead to marked changes in Arctic benthic ecosystems. |
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1158 |
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1939-5590 |
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yes |
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Serial |
6791 |
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Author |
Christophe Sauser, Karine Delord, Christophe Barbraud |
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Title |
Demographic sensitivity to environmental forcings: a multi-trait, multi-colony approach |
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Journal |
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Year |
2021 |
Publication |
Oikos |
Abbreviated Journal |
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Volume |
130 |
Issue |
6 |
Pages |
943-957 |
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109 |
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1600-0706 |
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1600-0706 |
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yes |
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8039 |
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Title |
Factors affecting adult body condition in the endangered northern rockhopper penguin |
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Journal |
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Year |
2021 |
Publication |
Marine Biology |
Abbreviated Journal |
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Volume |
168 |
Issue |
3 |
Pages |
27 |
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109,394 |
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Thesis |
Bachelor's thesis |
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ISSN |
1432-1793 |
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yes |
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Serial |
7792 |
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Author |
Lara D. Shepherd, Colin M. Miskelly, Yves Cherel, Alan J. D. Tennyson |
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Title |
Genetic identification informs on the distributions of vagrant Royal (Eudyptes schlegeli) and Macaroni (Eudyptes chrysolophus) Penguins |
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Journal |
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2021 |
Publication |
Polar Biology |
Abbreviated Journal |
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Volume |
44 |
Issue |
12 |
Pages |
2299-2306 |
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Keywords |
Antarctica Eudyptes chrysolophus Eudyptes schlegeli Genetic identification Penguin distribution Predation |
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109 |
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ISSN |
1432-2056 |
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yes |
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8365 |
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O. Alemany, P. Talalay, P. Boissonneau, J. Chappellaz, J. F. Chemin, R. Duphil, E. Lefebvre, L. Piard, P. Possenti, J. Triest |
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Title |
The SUBGLACIOR drilling probe: hydraulic considerations |
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Journal |
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Year |
2021 |
Publication |
Annals of Glaciology |
Abbreviated Journal |
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Volume |
62 |
Issue |
84 |
Pages |
131-142 |
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Keywords |
Glaciological instruments and methods ice coring ice engineering paleoclimate |
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Abstract ![sorted by Abstract field, ascending order (up)](img/sort_asc.gif) |
Using significant technological breakthroughs and unconventional approaches, the goal of the in situ probing of glacier ice for a better understanding of the orbital response of climate (SUBGLACIOR) project is to advance ice core research by inventing, constructing and testing an in situ probe to evaluate if a target site is suitable for recovering ice as old as 1.5 million years. Embedding a laser spectrometer, the probe is intended to make its own way down into the ice and to measure, in real time and down to the bedrock, the depth profiles of the ice ?D water isotopes as well as the trapped CH4 gas concentration and dust concentration. The probe descent is achieved through electromechanical drilling combined with continuous meltwater sample production using a central melting finger in the drill head. A key aspect of the project lies in the design and implementation of an efficient method to continuously transfer to the surface the ice chips being produced by the drill head and from the refreezed water expulsed downstream from the melting finger, into the borehole. This paper presents a detailed calculation and analysis of the flow rates and pressure conditions required to overcome friction losses of the drilling fluid and to effectively transport ice chips to the surface. |
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119 |
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0260-3055, 1727-5644 |
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yes |
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8234 |
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Title |
Water Isotopic Signature of Surface Snow Metamorphism in Antarctica |
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Year |
2021 |
Publication |
Geophysical Research Letters |
Abbreviated Journal |
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Volume |
48 |
Issue |
17 |
Pages |
e2021GL093382 |
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Keywords |
excess Ice cores metamorhism Paleoclimate water isotopes |
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Water isotope ratios of ice cores are a key source of information on past temperatures. Through fractionation within the hydrological cycle, temperature is imprinted in the water isotopic composition of snowfalls. However, this signal of climatic interest is modified after deposition when snow remains at the surface exposed to the atmosphere. Comparing time series of surface snow isotopic composition at Dome C with satellite observations of surface snow metamorphism, we found that long summer periods without precipitation favor surface snow metamorphism altering the surface snow isotopic composition. Using excess parameters (combining D,17O, and 18O fractions) allow the identification of this alteration caused by sublimation and condensation of surface hoar. The combined measurement of all three isotopic compositions could help identifying ice core sections influenced by snow metamorphism in sites with very low snow accumulation. |
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1110 |
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1944-8007 |
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yes |
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8306 |
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Title |
Antarctic surface temperature and elevation during the Last Glacial Maximum |
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Journal |
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Year |
2021 |
Publication |
Science |
Abbreviated Journal |
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Volume |
372 |
Issue |
6546 |
Pages |
1097-1101 |
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902 |
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yes |
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Call Number |
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8254 |
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