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Author |
Beaucournu J.C., Chastel O. |
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Title |
Variations morphologiques chez Notiopsylla kerguelensis (Taschenberg, 1880) (Siphonaptera, Pygiopsyllidae). |
Type |
Journal Article |
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Year |
1992 |
Publication |
Bulletin de la societe francaise de parasitologie |
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Volume |
10 |
Issue |
2 |
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265-268 |
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109 |
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1626-0384 |
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Approved |
yes |
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583 |
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Author |
Maurette M., Engrand C. & Kurat G. |
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Title |
Collection and Microanalysis of Antarctic Micrometeorites. |
Type |
Conference - International - Article without Reading Comitee |
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Year |
1996 |
Publication |
Physics. Chemistry, and Dynamics of Interplanetary Dust |
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Volume |
104 |
Issue |
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Pages |
265-273 |
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Abstract |
Physics. Chemistry, and Dynamics of Interplanetary Dust, ASP Conference Series |
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226 |
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yes |
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Serial |
1699 |
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Author |
Lefebvre E., Augustin L. & Maitre M. |
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Title |
the EPICA borehole logger. |
Type |
Journal Article |
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Year |
2002 |
Publication |
Mem. national inst. polar res. spec. issue |
Abbreviated Journal |
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Volume |
56 |
Issue |
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Pages |
264-274 |
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960 |
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yes |
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1110 |
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Author |
Lorius C. & Jouzel J. |
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Title |
European project for ice coring in Antarctica (Epica). |
Type |
Book Chapter |
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Year |
1996 |
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263-277 |
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Abstract |
The Ocean and The Poles: Grand Challenges for European Cooperation, Edited by Gotthilf Hempel, Gustav Fisher Verlag, 1996 |
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960 |
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yes |
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Serial |
728 |
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Author |
Bonsang B., Kanakidou M. & Boissard C. |
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Title |
Contribution of Tropical biomass burning to the global budget of hydrocarbons, carbon monoxide and tropospheric ozone. |
Type |
Book Chapter |
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Year |
1994 |
Publication |
Non-CO2 Greenhouse Gases, Kluwer Academic Press |
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Pages |
261-270 |
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Abstract |
Non-CO2 Greenhouse Gases, Kluwer Academic Press |
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146 |
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Approved |
yes |
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Serial |
170 |
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Report |
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Year |
1995 |
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Issue |
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Pages |
261-267 |
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211 |
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yes |
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Serial |
1301 |
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Author |
Dubouloz N., Bouhram M., Senior C., Delcourt D. & Malingre M. |
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Title |
Spatial structure of the cusp/cleft ion fountain: a case study using a magnetic conjugacy between Interball AP and a pair of SuperDARN radars. |
Type |
Journal Article |
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Year |
2001 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
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Volume |
106 |
Issue |
a1 |
Pages |
261-274 |
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Abstract |
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Programme |
312 |
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Thesis |
Bachelor's thesis |
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ISSN |
0148-0227 |
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Approved |
yes |
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Call Number |
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Serial |
1523 |
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Author |
Mengesha S., Dehairs F., Fiala M., Elskens M. & Goeyens L. |
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Title |
Seasonal variation of phytoplankton community structure and nitrogen uptake regime in the Indian sector of the southern ocean. |
Type |
Journal Article |
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Year |
1998 |
Publication |
Polar biology |
Abbreviated Journal |
Polar Biol. |
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Volume |
20 |
Issue |
4 |
Pages |
259-272 |
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Keywords |
Seasonal variation ; Phytoplankton ; Biomass ; Plant community ; Nitrogen cycle ; Absorption ; Southern Ocean ; Indian Ocean ; Algae ; Community structure ; Marine environment ; Thallophyta |
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Abstract |
This study investigates the dynamics of phytoplankton communities and nitrogen uptake in the Indian sector of the Southern Ocean during spring and summer. The study area is oligotrophic (Chl a stocks < 50 mg m-2); nevertheless, a large spatial variation of phytoplankton biomass and community structure was observed. During both seasons the phytoplankton community in the seasonal ice zone showed higher biomasses and was mainly composed of large diatom cells. However, in the permanently open ocean zone the community had low biomass and was chiefly composed of nano- and picoflagellates. In the polar front zone, although biomass was higher, the community structure was similar to the open ocean zone. The results suggest that the variation in phytoplankton community structure on a larger scale resonates with gradients in water column stability and nutrient distribution. However, significant changes in biomass and nutrient stocks but little change in community structure were observed. Absolute nitrogen uptake rates were generally low, but their seasonal variations were highly significant. During spring the communities displayed high specific nitrate uptake (mean rate = 0.0048 h-1). and diatoms (in the seasonal ice zone) as well as nano- and picoflagellates (in the permanently open ocean zone and polar front zone) were mainly based on new production (mean f-ratio = 0.69). The transition to summer was accompanied by a significant reduction in nitrate uptake rate (0.0048 h-1 ? 0.0011 h-1) and a shift from predominantly new to regenerated production (f-ratio 0.69 ? 0.39). Ammonium played a major role in the seasonal dynamics of phytoplankton nutrition. The results emphasize that, despite a large contrast in community structure, the seasonal dynamics of the nitrogen uptake regime and phytoplankton community structure in all three subsystems were similar. Additionally, this study supports our previous conclusion that the seasonal shift in nitrogen uptake regime can occur with, as well as without, marked changes in community structure. |
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193 |
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Place of Publication |
Berlin |
Editor |
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ISSN |
0722-4060 |
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Approved |
yes |
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Call Number |
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Serial |
2108 |
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Author |
Bargelloni L. & Lecointre G. |
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Title |
Four years in Notothenioid systematics: a molecular perspective. |
Type |
Journal Article |
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Year |
1998 |
Publication |
Fishes of Antarctica. A Biological Overview |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
259-273 |
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Abstract |
In G. di Prisco E. Pisano & A. Clarke (Eds). Fishes of Antarctica. A Biological Overview. Springer-Verlag Milano |
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Programme |
281 |
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yes |
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3006 |
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Author |
Bargelloni L., Zanel L., Derome N., Lecointre G. & Patarnello T. |
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Title |
Molecular zoogeography of antarctic euphausiids and notothenioids : from species phylogenies to intraspecific patterns of genetic variation. |
Type |
Journal Article |
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Year |
2000 |
Publication |
Antarctic science |
Abbreviated Journal |
Antarct. Sci. |
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Volume |
12 |
Issue |
3 |
Pages |
259-268 |
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281 |
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0954-1020 |
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Call Number |
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Serial |
3010 |
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