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Jean-Claude Roy, Alain Blieck, Daniel
Goujet, Philippe Janvier, Vincent Pernègre, Gaël Clément, Vincent Dupret, Denise Pons, Jean Chorowicz, André
Nel
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The ORS Vertebrates of Spitsbergen (Svalbard ) |
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Conference - International - Communication |
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2010 |
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congress STRATI 2010 Paris(30viii-02ix) – session 2 |
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73 |
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Author |
Jean-Claude Roy, Alain Blieck, Daniel
Goujet, Philippe Janvier, Vincent Pernègre, Gaël Clément, Vincent Dupret, Denise Pons, Jean Chorowicz, André
Nel.
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Title |
The ORS Vertebrates of Spitsbergen (Svalbard archipelago, Arctic) |
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Conference - International - Poster |
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2010 |
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Congress STRATI 2010 Paris (30viii-02ix) |
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705 |
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ROY, AZAR,NEL, GARROUSTE, BICHAIN, DHAESE |
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Preliminary results of SpitzP3 2010 mission (MNHN/CNRS/IPEV).
STRATI 2010 4th French Congress of Stratrigraphy |
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Conference - International - Communication |
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2010 |
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Preliminary results of the SPITZP3 expédition in the Spitzbergen, Arctic (searching for insects origin, paleobiology of the devonian and carboniferous presented at STRATI 2010 4th French Congress of Stratrigraphy. |
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1005 |
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1459 |
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AZAR et al,
the discovery of amber in the cenozoic sediments of Spitsbergen, 78°N and its paleoenvironenment implications presented at 5th International Congress Fossils X 3. August 20―25, 2010 • Beijing, China. |
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the northermost, the amber of Spitzbergen |
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Conference - International - Article with Reading Comitee |
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2010 |
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(2007) the northermost, the amber of Spitzbergen presented at the 5th International Congress Fossils X 3. August 2025, 2010 • Beijing, China
the discovery of amber in the cenozoic sediments of Spitsbergen, 78°N and its paleoenvironenment implications presented at 5th International Congress Fossils X 3. August 20-25, 2010 • Beijing, China. |
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3148 |
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Author |
Christopher M. Berry, John E.A. Marshall |
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Title |
Lycopsid forests in the early Late Devonian paleoequatorial zone of Svalbard |
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Journal |
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2015 |
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Geology |
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43 |
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12 |
Pages |
1043-1046 |
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The Middle to early Late Devonian transition from diminutive plants to the first forests is a key episode in terrestrialization. The two major plant groups currently recognized in such “transitional forests” are pseudosporochnaleans (small to medium trees showing some morphological similarity to living tree ferns and palms) and archaeopteridaleans (trees with woody trunks and leafy branches probably related to living conifers). Here we report a new type of “transitional” in-situ Devonian forest based on lycopsid fossils from the Plantekløfta Formation, Munindalen, Svalbard. Previously regarded as very latest Devonian (latest Famennian, 360 Ma), their age, based on palynology, is early Frasnian (ca. 380 Ma). In-situ trees are represented by internal casts of arborescent lycopsids with cormose bases and small ribbon-like roots occurring in dense stands spaced ∼15–20 cm apart, here identified as Protolepidodendropsis pulchra Høeg. This plant also occurs as compression fossils throughout most of the late Givetian–early Frasnian Mimerdalen Subgroup. The lycopsids grew in wet soils in a localized, rapidly subsiding, short-lived basin. Importantly, this new type of Middle to early Late Devonian forest is paleoequatorial and hence tropical. This high-tree-density tropical vegetation may have promoted rapid weathering of soils, and hence enhanced carbon dioxide drawdown, when compared with other contemporary and more high-latitude forests. |
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0091-7613 |
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8137 |
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Author |
Clément Schneider, Cyrille A. D’Haese, Clément Schneider, Cyrille A. D’Haese |
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Title |
Morphological and molecular insights on Megalothorax: the largest Neelipleona genus revisited (Collembola) |
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Journal |
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2013 |
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Invertebrate Systematics |
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27 |
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3 |
Pages |
317-364 |
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The genus Megalothorax Willem, 1900 is redefined along with a redescription of the type species M. minimus Willem, 1900 and the description of five new species (M. granulosus, sp. nov., M. nigropunctatus, sp. nov., M. perspicillum, sp. nov., M. svalbardensis, sp. nov. and M. willemi, sp. nov.). We describe and comment on broad sets of discriminating characters for Megalothorax systematics. For the first time, trichobothria are recorded for Neelipleona, probably of generic importance. The described species are provided with DNA data (COI, 16S and 28S) and included in a molecular-based phylogenetic analysis. The traditional distinction between minimus-group and incertus-group is discussed in the light of DNA and morphology components. A key to the worldwide Megalothorax species is provided. |
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1447-2600, 1447-2600 |
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8138 |
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Author |
Torsten Wappler, Romain Garrouste, Michael S. Engel, André Nel |
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Title |
Wasp mimicry among Palaeocene reduviid bugs from Svalbard |
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2013 |
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Acta palaeontologica polonica |
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58 |
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4 |
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883-887 |
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05677920 |
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8139 |
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Torsten Wappler, Thomas Denk |
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Title |
Herbivory in early Tertiary Arctic forests |
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2011 |
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Palaeogeography, Palaeoclimatology, Palaeoecology |
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310 |
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3 |
Pages |
283-295 |
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Arctic fossil forests Herbivory Latitudinal gradient Palaeogene Plant–insect interactions Spitsbergen |
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Early Tertiary High Arctic forest ecosystems are unique in that they have no equivalent among modern forests. Today, no forest ecosystem exists at such high latitudes. To assess the potential role of herbivory during the early Tertiary warm period at high latitudes, we have surveyed 1567 fossil angiosperm leaves from Svalbard for the presence or absence of 35 insect damage types (DTs). Our investigation for the first time uncovered a wealth of insect trace fossils from the early Tertiary northern high latitudes. These include galls, mines, and feeding traces on fossil leaves. Most of the folivory includes unspecific external foliage feeding that cannot be ascribed to a particular group of insects. Exceptions are the mining damage types that are most similar to those made by leaf-mining moths (Lepidoptera: Gracillaroidea). Nevertheless, the abundance of folivory indicates that herbivorous insects were an important component of the forests thriving in the Arctic realm. The observed change in insect herbivory from the Middle Paleocene to the Late Eocene/Early Oligocene in Spitsbergen may be attributed to climatic variables because they influence insect life-cycle timing, population density, and geographic range. |
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0031-0182 |
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8140 |
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Comeau S., Gorsky G., Jeffree R., Teyssié J. L. & Gattuso J.-P. |
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Impact of ocean acidification on a key Arctic pelagic mollusc (Limacina helicina). |
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Journal Article |
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2009 |
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BIOGEOSCIENCES |
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6 |
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1877-1882 |
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Thecosome pteropods (shelled pelagic molluscs) can play an important role in the food web of various ecosystems
and play a key role in the cycling of carbon and carbonate. Since they harbor an aragonitic shell, they could be
very sensitive to ocean acidification driven by the increase of anthropogenic CO2 emissions. The impact of changes in
the carbonate chemistry was investigated on Limacina helicina, a key species of Arctic ecosystems. Pteropods were kept
in culture under controlled pH conditions corresponding to pCO2 levels of 350 and 760μatm. Calcification was estimated using a fluorochrome and the radioisotope 45Ca. It exhibits a 28% decrease at the pH value expected for 2100
compared to the present pH value. This result supports the concern for the future of pteropods in a high-CO2 world, as
well as of those species dependent upon them as a food resource.
A decline of their populations would likely cause
dramatic changes to the structure, function and services of
polar ecosystems. |
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1008 |
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1726-4170 |
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5983 |
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Author |
Gattuso J.-P., Comeau S. & Maier C. |
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Impact of ocean acidification on marine snails and deep-sea corals. |
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2009 |
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73 |
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29 |
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5993 |
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