TY  - JOUR
AU  - Labat J.P., Mayzaud P. Sabini S.
PY  - 2005//
TI  - Population dynamics of Themisto gaudichaudii in Kerguelen Islands waters, Southern Indian Ocean.
T2  - Polar Biol.
JO  - Polar biology
SP  - 776
EP  - 783
VL  - 28
IS  - 10
KW  - Invertebrata
KW  - Arthropoda
KW  - Crustacea
KW  - Aquatic environment
KW  - Climatic zone
KW  - Antarctic Islands
KW  - Kerguelen Islands
KW  - Amphipoda
KW  - Marine environment
KW  - Polar region
KW  - Indian Ocean
KW  - Southern Ocean
KW  - Population dynamics
N2  - Fieldwork was carried out at Kerguelen Islands. Two groups of stations in a coastal area, the Morbihan gulf, were surveyed. At both stations, macroplankton biomass ranged from 2.3 mg dry weight m-3 to 89 mg dry weight m-3and consisted mostly of Themisto gaudichaudii with values ranging from 1.9 mg dry weight m-3 to 50.6 mg dry weight m-3. Biomass was high for sub-Antarctic waters with marked seasonal and inter-zone differences. Biomass minima were observed at the end of the winter, from September to November, while maxima were recorded in summer and in early fall at the beginning of the year between January and April. T. gaudichaudii showed a recruitment of new size classes, mainly from November to January, followed by a rapid growth phase in summer. which slowed down during the southern winter period. Individuals breed after 1 year. Large individuals, older than 1 year, were not a significant presence in the gulf of Morbihan. The main pattern of the population dynamics were characterised by an univoltine life cycle with a very high biomass marked by a strong seasonal signal linked with the hydrological and trophic parameters of the Gulf.
SN  - 0722-4060
UR  - http://dx.doi.org/10.1007/s00300-005-0003-7
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=3093), last updated on Tue, 28 Apr 2009 09:22:05 +0200
ID  - LabatJ.P.2005
ER  -