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Title |
Individual migration strategy fidelity but no habitat specialization in two congeneric seabirds |
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Journal |
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Year |
2021 |
Publication |
Journal of Biogeography |
Abbreviated Journal |
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Volume |
48 |
Issue  |
2 |
Pages |
263-275 |
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Keywords |
guillemots light-level geolocation murres Uria aalge Uria lomvia |
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388 |
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ISSN |
1365-2699 |
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1365-2699 |
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yes |
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Call Number |
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Serial |
8025 |
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Title |
The biology and feeding ecology of Arctic charr in the Kerguelen Islands |
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Journal |
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Year |
2021 |
Publication |
Journal of Fish Biology |
Abbreviated Journal |
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Volume |
98 |
Issue |
2 |
Pages |
526-536 |
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Programme |
1041 |
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ISSN |
1095-8649 |
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yes |
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Serial |
8178 |
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Title |
Phylogenomic Resolution of Sea Spider Diversification through Integration of Multiple Data Classes |
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Journal |
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Year |
2021 |
Publication |
Molecular Biology and Evolution |
Abbreviated Journal |
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Volume |
38 |
Issue |
2 |
Pages |
686-701 |
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Abstract |
Despite significant advances in invertebrate phylogenomics over the past decade, the higher-level phylogeny of Pycnogonida (sea spiders) remains elusive. Due to the inaccessibility of some small-bodied lineages, few phylogenetic studies have sampled all sea spider families. Previous efforts based on a handful of genes have yielded unstable tree topologies. Here, we inferred the relationships of 89 sea spider species using targeted capture of the mitochondrial genome, 56 conserved exons, 101 ultraconserved elements, and 3 nuclear ribosomal genes. We inferred molecular divergence times by integrating morphological data for fossil species to calibrate 15 nodes in the arthropod tree of life. This integration of data classes resolved the basal topology of sea spiders with high support. The enigmatic family Austrodecidae was resolved as the sister group to the remaining Pycnogonida and the small-bodied family Rhynchothoracidae as the sister group of the robust-bodied family Pycnogonidae. Molecular divergence time estimation recovered a basal divergence of crown group sea spiders in the Ordovician. Comparison of diversification dynamics with other marine invertebrate taxa that originated in the Paleozoic suggests that sea spiders and some crustacean groups exhibit resilience to mass extinction episodes, relative to mollusk and echinoderm lineages. |
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Programme |
1124 |
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ISSN |
1537-1719 |
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yes |
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Serial |
8246 |
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Journal |
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Year |
2021 |
Publication |
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Abbreviated Journal |
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Volume |
118 |
Issue |
2 |
Pages |
245-275 |
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Programme |
1217 |
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Approved |
yes |
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Call Number |
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Serial |
8690 |
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Author |
Samantha C. Patrick, Julien G. A. Martin, Caroline C. Ummenhofer, Alexandre Corbeau, Henri Weimerskirch |
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Title |
Albatrosses respond adaptively to climate variability by changing variance in a foraging trait |
Type |
Journal |
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Year |
2021 |
Publication |
Global Change Biology |
Abbreviated Journal |
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Volume |
27 |
Issue |
19 |
Pages |
4564-4574 |
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Keywords |
bet-hedging intra-individual variability resource acquisition salt-water immersion logger seabirds Southern Oscillation Index |
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Abstract |
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Programme |
109 |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1365-2486 |
ISBN |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
8257 |
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Author |
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Title |
North Atlantic winter cyclones starve seabirds |
Type |
Journal |
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Year |
2021 |
Publication |
Current Biology |
Abbreviated Journal |
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Volume |
31 |
Issue |
17 |
Pages |
3964-3971.e3 |
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Keywords |
at-sea distribution cyclones energy expenditure GLS tracking seabird migration seascape ecology |
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Abstract |
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Programme |
330,388 |
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Thesis |
Bachelor's thesis |
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Edition |
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ISSN |
0960-9822 |
ISBN |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
8294 |
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Author |
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Title |
Water Isotopic Signature of Surface Snow Metamorphism in Antarctica |
Type |
Journal |
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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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Abstract |
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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Programme |
1110 |
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ISSN |
1944-8007 |
ISBN |
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Approved |
yes |
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Call Number |
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Serial |
8306 |
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Title |
Is the southern crab Halicarcinus planatus (Fabricius, 1775) the next invader of Antarctica? |
Type |
Journal |
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Year |
2021 |
Publication |
Global Change Biology |
Abbreviated Journal |
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Volume |
27 |
Issue |
15 |
Pages |
3487-3504 |
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Keywords |
climate change establishment niche modelling non-native species reptant crab Southern Ocean survival thermotolerance |
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Abstract |
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Programme |
1044 |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1365-2486 |
ISBN |
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Approved |
yes |
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Call Number |
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Serial |
8005 |
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Author |
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Title |
Underwater photogrammetry for close-range 3D imaging of dry-sensitive objects: The case study of cephalopod beaks |
Type |
Journal |
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Year |
2021 |
Publication |
Ecology and Evolution |
Abbreviated Journal |
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Volume |
11 |
Issue |
12 |
Pages |
7730-7742 |
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Keywords |
3D models cephalopod beaks dry-sensitive material micro-CT scanning micro-photogrammetry underwater photogrammetry |
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Abstract |
Technical advances in 3D imaging have contributed to quantifying and understanding biological variability and complexity. However, small, dry-sensitive objects are not easy to reconstruct using common and easily available techniques such as photogrammetry, surface scanning, or micro-CT scanning. Here, we use cephalopod beaks as an example as their size, thickness, transparency, and dry-sensitive nature make them particularly challenging. We developed a new, underwater, photogrammetry protocol in order to add these types of biological structures to the panel of photogrammetric possibilities. We used a camera with a macrophotography mode in a waterproof housing fixed in a tank with clear water. The beak was painted and fixed on a colored rotating support. Three angles of view, two acquisitions, and around 300 pictures per specimen were taken in order to reconstruct a full 3D model. These models were compared with others obtained with micro-CT scanning to verify their accuracy. The models can be obtained quickly and cheaply compared with micro-CT scanning and have sufficient precision for quantitative interspecific morphological analyses. Our work shows that underwater photogrammetry is a fast, noninvasive, efficient, and accurate way to reconstruct 3D models of dry-sensitive objects while conserving their shape. While the reconstruction of the shape is accurate, some internal parts cannot be reconstructed with photogrammetry as they are not visible. In contrast, these structures are visible using reconstructions based on micro-CT scanning. The mean difference between both methods is very small (10?5 to 10?4 mm) and is significantly lower than differences between meshes of different individuals. This photogrammetry protocol is portable, easy-to-use, fast, and reproducible. Micro-CT scanning, in contrast, is time-consuming, expensive, and nonportable. This protocol can be applied to reconstruct the 3D shape of many other dry-sensitive objects such as shells of shellfish, cartilage, plants, and other chitinous materials. |
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Programme |
109 |
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ISSN |
2045-7758 |
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Approved |
yes |
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Call Number |
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Serial |
8092 |
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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 |
Type |
Journal |
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Year |
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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Abstract |
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Programme |
109 |
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Edition |
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ISSN |
1432-2056 |
ISBN |
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Approved |
yes |
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Call Number |
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Serial |
8365 |
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| Permanent link to this record |
