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Author |
Crouzet N. |
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Title |
Monitoring warm transiting exoplanets for Ariel with ASTEP+ |
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Communication |
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2021 |
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1066 |
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yes |
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7826 |
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Author |
Guillot T. |
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Title |
Science of temperate exoplanets: The lessons from Juno |
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Book Chapter |
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2021 |
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1066 |
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Bachelor's thesis |
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7827 |
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Title |
Once upon a time in the far south: Influence of local drivers and functional traits on plant invasion in the harsh sub-Antarctic islands |
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Journal |
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Year |
2021 |
Publication |
Journal of Vegetation Science |
Abbreviated Journal |
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Volume |
32 |
Issue |
4 |
Pages |
e13057 |
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Keywords |
alien plants anthropogenic propagule pressure cold environments human disturbances plant invasiveness species distribution models topoclimate |
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Abstract |
Aim Here, we aim to: (a) investigate the local effect of environmental and anthropogenic factors on alien plant invasion in sub-Antarctic islands; and (b) explore whether and how functional traits affect alien species dependence on anthropogenic factors in these environments. Location Possession Island, Crozet archipelago (French sub-Antarctic islands). Methods Single-species distribution models were used to explore the effect of high-resolution topoclimatic and human-related variables on the occurrence of six alien plants colonizing French sub-Antarctic islands. Furthermore, plant responses to human-related variables and the effect of those variables in interaction with plant traits were analysed by means of a multi-species distribution model. This allowed identifying functional features mediating the influence of human activities on the occurrence probability of alien plant species. Results We observed two main invasion patterns: (a) species predicted to occur close to the introduction sites, whose occurrence probability appeared to be strongly affected by anthropogenic factors; and (b) species predicted to occur nearly everywhere on Possession Island, except in areas featuring particularly harsh climatic conditions. Differences in the influence of human-related variables on the occurrence of the alien species were mostly related to their life history, plant height and residence time, with perennial and low-statured species introduced earlier appearing less dependent on human-induced dispersal and disturbance. Conclusions We conclude that both topoclimatic and anthropogenic factors affect plant invasion on sub-Antarctic islands. Specifically, species predicted to occur close to their introduction sites appear much more dependent on human presence and activity, potentially due to the lack of key functional traits allowing them to spread successfully across Possession Island under the harsh sub-Antarctic climate. Yet, particularly severe abiotic conditions are a major constraint which equally limits the occurrence of all alien plants, irrespective of their dependence on anthropogenic factors. |
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136 |
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1654-1103 |
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yes |
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8298 |
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Author |
Mike Lockwood, Carl Haines, Luke A. Barnard, Mathew J. Owens, Chris J. Scott, Aude Chambodut, Kathryn A. McWilliams |
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Title |
Semi-annual, annual and Universal Time variations in the magnetosphere and in geomagnetic activity: 4. Polar Cap motions and origins of the Universal Time effect |
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Journal |
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Year |
2021 |
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Journal of Space Weather and Space Climate |
Abbreviated Journal |
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11 |
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15 |
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139 |
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2115-7251 |
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yes |
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8076 |
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Author |
David Byrne, Jeff Polton, Colin Bell |
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Title |
Creation of a global tide analysis dataset: Application of NEMO and an offline objective analysis scheme |
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Journal |
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Year |
2021 |
Publication |
Journal of Operational Oceanography |
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1-14 |
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Abstract |
The accurate prediction of tides is vital for the operation of many industries, early warning of coastal flooding and scientific understanding of ocean processes. In this paper, we describe the creation method of a global dataset of tidal harmonics using NEMO (Nucleus for European Modelling of the Ocean) for the first time and an offline objective analysis scheme. Data are assimilated as part of a post-processing step, reducing the computational resources required. A reduced ensemble of tidal harmonics is generated, where each member is run for a shorter period of time than a central background state. This ensemble is used to estimate a single background covariance state, which is used for analysis. Output is validated using an ensemble of objective analyses. For each ensemble member, random selections of observations are omitted and validation is performed at these locations. Improvements in both Mean Absolute Error (MAE) and correlation coefficients (R2) are seen across all 6 of the largest diurnal and semi-diurnal constituents. MAEs in amplitude and phase are reduced by up to 78% and 89%, respectively, and correlations by as much as 0.14. In addition, the majority of locations (between 70 and 80%) see significant improvement. |
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688 |
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1755-876X |
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1755-876X |
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yes |
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8338 |
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A novel animal-borne miniature echosounder to observe the distribution and migration patterns of intermediate trophic levels in the Southern Ocean |
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Journal |
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Year |
2021 |
Publication |
Journal of Marine Systems |
Abbreviated Journal |
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223 |
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103608 |
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Keywords |
Biologging Diel vertical migration Functional data analysis Marine acoustics Micronekton Sonar tag |
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1201 |
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0924-7963 |
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yes |
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8260 |
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Author |
N. Aubone, M. Saraceno, M. L. Torres Alberto, J. Campagna, L. Le Ster, B. Picard, M. Hindell, C. Campagna, C. R. Guinet |
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Physical changes recorded by a deep diving seal on the Patagonian slope drive large ecological changes |
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Journal |
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Year |
2021 |
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Journal of Marine Systems |
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223 |
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Pages |
103612 |
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Keywords |
Elephant seals Malvinas current Patagonian shelf slope Southwestern Atlantic Ocean |
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1201 |
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0924-7963 |
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yes |
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Serial |
8771 |
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Author |
Afsaneh Mohammadzaheri, Karin Sigloch, Kasra Hosseini, Mitchell G. Mihalynuk |
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Title |
Subducted Lithosphere Under South America From Multifrequency P Wave Tomography |
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Journal |
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Year |
2021 |
Publication |
Journal of Geophysical Research: Solid Earth |
Abbreviated Journal |
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Volume |
126 |
Issue |
6 |
Pages |
e2020JB020704 |
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Andes intra-arc intra-oceanic subduction seismic tomography South America structure of the mantel |
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133 |
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2169-9356 |
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yes |
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7991 |
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Author |
Jun Xie, Risheng Chu, Sidao Ni |
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Title |
Evaluating Global Tomography Models With Antipodal Ambient Noise Cross-Correlation Functions |
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Journal |
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Year |
2021 |
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Journal of Geophysical Research: Solid Earth |
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126 |
Issue |
3 |
Pages |
e2020JB020444 |
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ambient noise cross-correlation functions antipodal surface waves mantle heterogeneity tomography model evaluation |
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133 |
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2169-9356 |
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yes |
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7993 |
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Author |
N. Ribeiro, L. Herraiz-Borreguero, S. R. Rintoul, C. R. McMahon, M. Hindell, R. Harcourt, G. Williams |
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Title |
Warm Modified Circumpolar Deep Water Intrusions Drive Ice Shelf Melt and Inhibit Dense Shelf Water Formation in Vincennes Bay, East Antarctica |
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Year |
2021 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
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Volume |
126 |
Issue |
8 |
Pages |
e2020JC016998 |
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Keywords |
AABW Antarctic Coastal Circulation Antarctic Margins basal melt mCDW intrusions seal CTD |
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109 |
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2169-9291 |
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8211 |
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