Ecologie des foraminifères planctoniques du golfe de Gascogne ...

tel-00480660, version 1 - 4 May 2010
Species
ALD
(Schmuker and
Schiebel, 2002)
G. bulloides 43
G. siphonifera 51
Seasonal distribution Salinity
Absent or rare between August and November in Station Delta (44°N, 41°W) (Bé
and Tolderlund, 1971)
Biweekly - semi lunar cycle until 300m (Hemleben et al., 1989), seems indicate
summer period, warm water (Schiebel et al, 1995)
: S=34,4%o-36,63%o optimal from 34,4 to 35,87 (Bé and
Tolderlund, 1971) ; S= 35-37%o (Pujol, 1980)
S= 35,5-36,6%o (Pujol, 1980); same preferences for physical
conditions that calida (Hilbrecht, 1996); high salinities (Ufkes et
al 1998). Show the lowest tolerance to salinity variation (Bijma et
al., 1990a)
G. calida 58 S= 34-37,4%o (Hilbrecht, 1996)
T. quinqueloba 53
Bloom during spring (April/may) (Schiebel et al 2000). Most present during summer
(Bé and Tolderlund,1971) monthly (lunar) (Hemleben et al., 1989)
34,4-36 (34,4-35) (Pujol, 1980)
G. glutinata 39 In spring (Schiebel et al., 2000) 35,87-36,57%o (Bé and Tolderlund, 1971)
G. uvula
G. ruber (white) 37
In fall, mainly in Antartic area (Boltovskoy and Wright, 1976); was recorded only in
June (Schiebel and Hemleben, 2000)
34-35,5%o (Pujol, 1980)
from 0 to 50m (Hemleben et al., 1989); at the end of the summer, G. ruber
becomes dominant in the assemblages of the Sargasso Sea, During April, May and
22%o-49%o (Hemleben et al 1989); % majority of the population
June: absent, only during August (Schiebel at al 2000). Present in stations Echo
are in regions where salinity is high 37-38%o (Bé, 1977)
and Bermuda, in high abundance after April, and in Delta (44°N, 41°W) after July
(Tolderlund and Bé, 1971).
G. trilobus trilobus During April, May and June: absent, only during August (Schiebel at al 2000)
G. trilobus sacculifer 40
G. hirsuta 161
G.inflata
During April, May and June: absent, only during August (Schiebel at al 2000) In
september in Delta station (Tolderlund and Bé, 1971)
Most abundante from January to April (Bé, 1977); Annual variability in columne of
water, from 0 to + 2 000m (Hemleben et al., 1989, Pujol, 1980); winter species
(Tolderlund and Bé, 1971; Loncaric et al 2007; Healy-Williams et al., 1989); winter
and early spring species (Schiebel et al., 1995).
From 0 to 400m (Hemleben et al, 1989); near the mixed layer in winter and in
deeper habitat during summer (Cléroux et al 2007, Deuser et al. 1981) development
of this species during warm season at mid latitude (Ottens, 1992; Cléroux et al
2007).
35,75-36,5%o (Pujol, 1980)
35,8-36,6%o (Pujol, 1980)
35,2 +-3,8%o (Bé, 1977)
G. scitula 250 35,35 +-1,7%o (Bé, 1977)
G. truncatulinoides senestre 161
G. truncatulinoides dextre 161
Annual variability in water column (e.g. Bé and Tolderlund, 1971; Bé, 1977, Pujol,
1980); in the lower part of the thermocline in winter (BST