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Author |
Vijver Bart Van De, Cox Eileen J, |
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Title |
New and Interesting Small-Celled Naviculoid Diatoms (Bacillariophyceae) from a Lava Tube Cave on Île Amsterdam (TAAF, Southern Indian Ocean)
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Journal Article |
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Year |
2013 |
Publication |
CRYPTOGAMIE ALGOLOGIE |
Abbreviated Journal |
Cryptogam., Algol. |
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Volume |
34 |
Issue |
1 |
Pages |
37-47 |
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Abstract The analysis of a sample taken in a lava tube cave on Île Amsterdam (southern Indian Ocean) revealed the presence of three interesting small-celled naviculoid diatom taxa. Based on light and detailed scanning electron microscopy, two of these taxa are described as new: Mayamaea cavernicola sp. nov. and Sellaphora barae sp. nov. A third taxon, Chamaepinnularia aerophila Van de Vijver et Beyens, was previously only found in the type locality on the nearby Crozet Archipelago. The three taxa are compared to other morphologically similar species from Europe, South America and the (sub-)Antarctic Region. , Résumé Durant l'analyse d'un échantillon récolté dans une caverne de lave sur l'Île Amsterdam (Océan Indien austral), trois taxons naviculoïdes intéressants de petite taille ont été observés. Sur la base d'observations en microscopie optique et électronique à balayage, Mayamaea cavernicola sp. nov. and Sellaphora barae sp. nov. ont été décrits comme nouveaux taxons. Un troisième taxon, Chamaepinnularia aerophila Van de Vijver & Beyens avait auparavant seulement été trouvé dans la localité type sur l'Archipel de Crozet situé à proximité. Les nouveaux taxons sont comparés avec des taxons morphologiquement similaires de l'Europe, de l'Amérique du Sud et de la Région sub-antarctique. |
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136 |
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0181-1568 |
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4387 |
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Blanchard P., Lauzeral C., Chamaillé-Jammes S., Yoccoz N.G., Pontier D. |
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Title |
Analyzing the proximity to cover in a landscape of fear: a new approach applied to fine-scale habitat use by rabbits facing feral cat predation on Kerguelen archipelago |
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Journal Article |
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Year |
2016 |
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Peerj |
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4 |
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Pages |
e1769 |
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Although proximity to cover has been routinely considered as an explanatory variable in studies investigating prey behavioral adjustments to predation pressure, the way it shapes risk perception still remains equivocal. This paradox arises from both the ambivalent nature of cover as potentially both obstructive and protective, making its impact on risk perception complex and context-dependent, and from the choice of the proxy used to measure proximity to cover in the field, which leads to an incomplete picture of the landscape of fear experienced by the prey. Here, we study a simple predator-prey-habitat system, i.e., rabbits Oryctolagus cuniculus facing feral cat Felis catus predation on Kerguelen archipelago. We assess how cover shapes risk perception in prey and develop an easily implementable field method to improve the estimation of proximity to cover. In contrast to protocols considering the “distance to nearest cover”, we focus on the overall “area to cover”. We show that fine-scale habitat use by rabbits is clearly related to our measure, in accordance with our hypothesis of higher risk in patches with smaller area to cover in this predator-prey-habitat system. In contrast, classical measures of proximity to cover are not retained in the best predictive models of habitat use. The use of this new approach, together with a more in-depth consideration of contrasting properties of cover, could help to better understand the role of this complex yet decisive parameter for predator-prey ecology. |
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279 |
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2167-8359 |
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6551 |
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Author |
Stéphanie Steelandt, Najat Bhiry, Dominique Marguerie, Caroline Desbiens, Minnie Napartuk et Pierre M. Desrosiers |
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Title |
Inuit knowledge and use of wood resources on the west coast of Nunavik, Canada |
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Journal Article |
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Year |
2013 |
Publication |
Études Inuit Studies |
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Volume |
37 |
Issue |
1 |
Pages |
147-174 |
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1080 |
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0701-1008 |
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yes |
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4858 |
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Author |
Barbora Chattová, Marc Lebouvier, Myriam De Haan, Bart Van de Vijver |
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Title |
The genus Luticola (Bacillariophyta) on Ile Amsterdam and Ile Saint-Paul (Southern Indian Ocean) with the description of two new species |
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Year |
2017 |
Publication |
European Journal of Taxonomy |
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Volume |
0 |
Issue |
387 |
Pages |
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Keywords |
Bacillariophyta diatoms Luticola morphology new species |
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Abstract |
Five species of the terrestrial diatom genus Luticola D.G.Mann were found during a taxonomic survey of two small volcanic islands, Ile Amsterdam and Ile Saint-Paul (Southern Indian Ocean). Apart from the two already known Luticola species L. beyensii Van de Vijver et al. and L. subcrozetensis Van de Vijver et al., two new species are described: L. ivetana Chattová & Van de Vijver sp. nov. and L. vancampiana Chattová & Van de Vijver sp. nov. Finally, one, up to now unknown, Luticola species is briefly discussed and illustrated. Detailed morphological descriptions of these taxa are provided based on both light and scanning electron microscopy observations. Morphological features of the new species are compared to morphologically similar taxa, and notes on their ecology and biogeography are added. |
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136 |
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ISSN |
2118-9773 |
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2118-9773 |
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yes |
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Serial |
7039 |
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Author |
Van de Vijver Bart, |
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Title |
Four Achnanthidium species (Bacillariophyta) formerly identified as Achnanthidium minutissimum from the Antarctic Region
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Type |
Journal Article |
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Year |
2014 |
Publication |
European Journal of Taxonomy |
Abbreviated Journal |
2118-9773 |
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Volume |
79 |
Issue |
79 |
Pages |
1-19 |
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Keywords |
Achnanthidium, Antarctic Region, Bacillariophyta, biogeography, new species, |
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Abstract |
Four taxa belonging to the complex of species around Achnanthidium minutissimum were found during the ongoing taxonomic revision of the Antarctic freshwater and limno-terrestrial diatom flora. Two taxa were previously described as Achnanthidium lailae and A. sieminskae . Two others were formerly identified as A. minutissimum but detailed light and scanning electron microscopical observations revealed sufficient morphological differences compared to the type of A. minutissimum , to justify their separation and description as new taxa: Achnanthidium indistinctum and A. maritimo-antarcticum . The morphology and ecology of all four taxa are discussed comparing the species with morphologically similar taxa. The biogeographical consequences of the splitting of the former A. minutissimum complex in the Antarctic Region are discussed.
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136 |
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2118-9773 |
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yes |
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Serial |
5869 |
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Author |
Barrio I.C., Hik D.S., Charrier M., Frenot Y., Renault D. |
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Title |
Adaptations of a native Subantarctic flightless fly to dehydration stress: more plastic than we thought? |
Type |
Journal Article |
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Year |
2014 |
Publication |
Czech Polar Reports |
Abbreviated Journal |
1805-0689 |
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Volume |
4 |
Issue |
2 |
Pages |
123-128 |
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136 |
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1805-0689 |
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yes |
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5870 |
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Author |
Vincent Bretagnolle, Marc Benoit, Mathieu Bonnefond, Vincent Breton, Jon Church, Sabrina Gaba, Daniel Gilbert, François Gillet, Sandrine Glatron, Chloé Guerbois, Nicolas Lamouroux, Marc Lebouvier, Camille Mazé, Jean-Marie Mouchel, Annie Ouin, Olivier Pays, Christophe Piscart, Olivier Ragueneau, Sylvie Servain, Thomas Spiegelberger, Hervé Fritz |
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Title |
Action-orientated research and framework: insights from the French long-term social-ecological research network |
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2019 |
Publication |
Ecology and Society |
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24 |
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3 |
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Bretagnolle, V., M. Benoit, M. Bonnefond, V. Breton, J. M. Church, S. Gaba, D. Gilbert, F. Gillet, S. Glatron, C. Guerbois, N. Lamouroux, M. Lebouvier, C. Mazé, J.-M. Mouchel, A. Ouin, O. Pays, C. Piscart, O. Ragueneau, S. Servain, T. Spiegelberger, and H. Fritz. 2019. Action-orientated research and framework: insights from the French long-term social-ecological research network. Ecology and Society 24(3):10. https://doi.org/10.5751/ES-10989-240310 |
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136 |
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1708-3087 |
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1708-3087 |
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7014 |
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Author |
Dorian Cazau, Cédric Pradalier, Julien Bonnel, Christophe Guinet |
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Title |
Do Southern Elephant Seals Behave Like Weather Buoys? |
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Year |
2017 |
Publication |
Oceanography |
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30 |
Issue |
2 |
Pages |
140-149 |
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109 |
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10428275 |
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8216 |
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Author |
Halina Bednarek-Ochyra, Vítězslav Plášek, Shui-Liang Guo |
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Title |
A brief survey of bryological studies in the Subantarctic, including Macrocoma tenue (Orthotrichaceae), a moss genus and species newly found in Îles Kerguelen |
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Year |
2018 |
Publication |
Acta Societatis Botanicorum Poloniae |
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Volume |
87 |
Issue |
4 |
Pages |
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Keywords |
Antarctica austral polar regions biodiversity biogeography Bryophyta Kerguelen Biogeographical Province Southern Ocean |
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Abstract |
Studies on the bryophyte flora of the Southern Ocean islands and in the Antarctic are briefly reviewed and the current state of knowledge of the moss flora of Îles Kerguelen is discussed. Macrocoma tenue (Hook. & Grev.) Vitt is recorded from the Îles Kerguelen archipelago and this constitutes the first record of the genus Macrocoma (Müll. Hal.) Grout from the Subantarctic. The local plants of the species are characterized and illustrated and their ecology is discussed. Global distribution of M. tenue is reviewed and mapped. It is suggested that the type subspecies of M. tenue is a Gondwanan relictual taxon, which could have evolved on this supercontinent prior to its break-up and, subsequently, it reached Îles Kerguelen where it survived during the Pleistocene glacial epoch. |
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136 |
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2083-9480 |
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2083-9480 |
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yes |
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Serial |
7453 |
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Author |
Bart Van de Vijver, Carlos E. Wetzel, Luc Ector |
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Title |
Analysis of the type material of Planothidium delicatulum (Bacillariophyta) with the description of two new Planothidium species from the sub-Antarctic Region |
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Journal |
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Year |
2018 |
Publication |
Fottea |
Abbreviated Journal |
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Volume |
18 |
Issue |
2 |
Pages |
200-211 |
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Abstract |
During a survey of the freshwater diatom flora on the sub-Antarctic islands of the southern Indian Ocean, two new Planothidium species were observed, showing some resemblance to Planothidium delicatulum. Therefore, the type material of Achnanthidium delicatulum Kützing was analysed, a common species in northern hemisphere waterbodies that was later transferred to the genus Planothidium. Additionally the material of Types du Synopsis des Diatomées de Belgique n° 234, designated in 1980 as neotype for Achnanthes delicatula was investigated. This analysis showed that the population in Types n° 234 is not conspecific with Achnanthidium delicatulum but in fact is a population of Planothidium galaicum. Both Planothidium species in the investigated Antarctic material are described as new to science: P. lilianeanum Van de Vijver sp. nov. and P. australodelicatulum Van de Vijver, C.E.Wetzel et Ector sp. nov. The new species can be differentiated based on differences in valve outline, presence of ridges and silica outgrowths on the rapheless valve, the structure of the raphe and the shape and size of the central area. Notes on the ecology and distribution of the new Antarctic species are added. Achnanthidium delicatulum is formally lectotypified. |
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18025439, 18054927 |
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18025439, 18054927 |
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7458 |
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