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Title |
Global assessment of marine plastic exposure risk for oceanic birds. |
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Year  |
2023 |
Publication |
Nature communications |
Abbreviated Journal |
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Volume |
14 |
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Pages |
3665 |
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Abstract |
Plastic pollution is distributed patchily around the world's oceans. Likewise, marine organisms that are vulnerable to plastic ingestion or entanglement have uneven distributions. Understanding where wildlife encounters plastic is crucial for targeting research and mitigation. Oceanic seabirds, particularly petrels, frequently ingest plastic, are highly threatened, and cover vast distances during foraging and migration. However, the spatial overlap between petrels and plastics is poorly understood. Here we combine marine plastic density estimates with individual movement data for 7137 birds of 77 petrel species to estimate relative exposure risk. We identify high exposure risk areas in the Mediterranean and Black seas, and the northeast Pacific, northwest Pacific, South Atlantic and southwest Indian oceans. Plastic exposure risk varies greatly among species and populations, and between breeding and non-breeding seasons. Exposure risk is disproportionately high for Threatened species. Outside the Mediterranean and Black seas, exposure risk is highest in the high seas and Exclusive Economic Zones (EEZs) of the USA, Japan, and the UK. Birds generally had higher plastic exposure risk outside the EEZ of the country where they breed. We identify conservation and research priorities, and highlight that international collaboration is key to addressing the impacts of marine plastic on wide-ranging species. |
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388 |
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2041-1723 |
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yes |
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8681 |
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Title |
Biotic and abiotic drivers of aquatic plant communities in shallow pools and wallows on the sub?Antarctic Iles Kerguelen |
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Journal |
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Year |
2023 |
Publication |
Polar Biology |
Abbreviated Journal |
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Volume |
46 |
Issue |
4 |
Pages |
303 |
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Abstract |
In the sub-Antarctic region, climate change is particularly rapid, while their freshwater ecosystems, such as ponds, host plant species with limited spatial distributions. These particular systems and their plant communities remain however poorly known and the context of their changing habitat calls for deeper insights into these systems. We performed an extensive survey of 45 ponds over three locations of the Iles Kerguelen during the winter and summer seasons of two years, which included the measurement of 12 abiotic parameters and the assessment of the plant community composition. Overall, our results showed that Iles Kerguelen ponds are shallow freshwater ecosystems harbouring species-poor plant communities with high even- ness, of which structure did not vary among the sampled locations. Three different habitats were identified among ponds in relation with nutrient supply by marine animals, which ultimately influenced plant community structure and cover. We highlight that these habitats are mostly determined by water depth, nutrients, and temperature (mean and variance). Present plant community composition was more strongly correlated with plant community composition in the previous year than with abiotic conditions. Overall, this study provides new knowledge on the aquatic plant communities and the functioning of Iles Kerguelen freshwater ecosystems, which can serve as a basis for future studies dealing with the impact of climate change in the sub-Antarctic region. |
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136 |
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yes |
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8682 |
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Title |
HIP 33609 b: An Eccentric Brown Dwarf Transiting a V = 7.3 Rapidly Rotating B Star |
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Year |
2023 |
Publication |
The Astronomical Journal |
Abbreviated Journal |
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Volume |
165 |
Issue |
6 |
Pages |
268 |
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1066 |
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1538-3881 |
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1538-3881 |
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yes |
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8683 |
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Title |
ExoClock Project. III. 450 New Exoplanet Ephemerides from Ground and Space Observations |
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Journal |
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Year |
2023 |
Publication |
The Astrophysical Journal Supplement Series |
Abbreviated Journal |
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Volume |
265 |
Issue |
1 |
Pages |
4 |
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Abstract |
The ExoClock project has been created to increase the efficiency of the Ariel mission. It will achieve this by continuously monitoring and updating the ephemerides of Ariel candidates, in order to produce a consistent catalog of reliable and precise ephemerides. This work presents a homogenous catalog of updated ephemerides for 450 planets, generated by the integration of ?18,000 data points from multiple sources. These sources include observations from ground-based telescopes (the ExoClock network and the Exoplanet Transit Database), midtime values from the literature, and light curves from space telescopes (Kepler, K2, and TESS). With all the above, we manage to collect observations for half of the postdiscovery years (median), with data that have a median uncertainty less than 1 minute. In comparison with the literature, the ephemerides generated by the project are more precise and less biased. More than 40% of the initial literature ephemerides had to be updated to reach the goals of the project, as they were either of low precision or drifting. Moreover, the integrated approach of the project enables both the monitoring of the majority of the Ariel candidates (95%), and also the identification of missing data. These results highlight the need for continuous monitoring to increase the observing coverage of the candidate planets. Finally, the extended observing coverage of planets allows us to detect trends (transit-timing variations) for a sample of 19 planets. All the products, data, and codes used in this work are open and accessible to the wider scientific community. |
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1066 |
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ISSN |
0067-0049 |
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yes |
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8684 |
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Title |
Unveiling the co-phylogeny signal between plunderfish Harpagifer spp. and their gut microbiomes across the Southern Ocean |
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Year |
2023 |
Publication |
Biorxiv |
Abbreviated Journal |
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Issue |
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Programme |
1044 |
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yes |
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Serial |
8685 |
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Year |
2023 |
Publication |
Arctic, Antarctic, and Alpine Research |
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Volume |
55 |
Issue |
1 |
Pages |
2194492 |
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Keywords |
Nunavik snow avalanches Time-lapse cameras weather data |
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1148 |
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ISSN |
1523-0430 |
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yes |
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8695 |
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Title |
Potential for redistribution of post-moult habitat for Eudyptes penguins in the Southern Ocean under future climate conditions |
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Year |
2023 |
Publication |
Global Change Biology |
Abbreviated Journal |
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Volume |
29 |
Issue |
3 |
Pages |
648-667 |
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Keywords |
climate change habitat preference models migration overwinter species redistributions Subantarctic penguins |
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394 |
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1365-2486 |
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yes |
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8696 |
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Author |
Kozue Shiomi, Katsufumi Sato, Charles A. Bost, Yves Handrich |
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Title |
Stay the course: maintenance of consistent orientation by commuting penguins both underwater and at the water surface |
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Year |
2023 |
Publication |
Marine Biology |
Abbreviated Journal |
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Volume |
170 |
Issue |
4 |
Pages |
42 |
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Keywords |
Bearing Compass Diving bird Navigation Orientation |
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394 |
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ISSN |
1432-1793 |
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yes |
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8697 |
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Title |
Towards Operational Fiducial Reference Measurement (FRM) Data for the Calibration and Validation of the Sentinel-3 Surface Topography Mission over Inland Waters, Sea Ice, and Land Ice |
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Year |
2023 |
Publication |
Remote Sensing |
Abbreviated Journal |
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Volume |
15 |
Issue |
19 |
Pages |
4826 |
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Keywords |
FRM inland water surface height land ice height S3 land STM SAR altimeter sea ice thickness uncertainties |
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The Copernicus Sentinel-3 Surface Topography Mission (STM) Land Altimetry provides valuable surface elevation information over inland waters, sea ice, and land ice, thanks to its synthetic aperture radar (SAR) altimeter and its orbit that covers high-latitude polar regions. To ensure that these measurements are reliable and to maximise the return on investment, adequate validation of the geophysical retrieval methods, processing algorithms, and corrections must be performed using independent observations. The EU-ESA project St3TART (started July 2021) aims to generalise the concept of Fiducial Reference Measurements (FRMs) for the Copernicus Sentinel-3 STM. This work has gathered existing data, made new observations during field campaigns, and ensured that these observations meet the criteria of FRM standards so that they can be used to validate Sentinel-3 STM Land Altimetry products operationally. A roadmap for the operational provision of the FRM, including the definition, consolidation, and identification of the most relevant and cost-effective methods and protocols to be maintained, supported, or implemented, has been developed. The roadmap includes guidelines for SI traceability, definitions of FRM measurement procedures, processing methods, and uncertainty budget estimations. |
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411 |
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2072-4292 |
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2072-4292 |
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yes |
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8698 |
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Year |
2023 |
Publication |
The Cryosphere |
Abbreviated Journal |
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Volume |
17 |
Issue |
12 |
Pages |
5241-5254 |
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1110,1205 |
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Bachelor's thesis |
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1994-0416 |
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yes |
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8699 |
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