scholarly journals Seasonal variability in bacterial abundance, production and protistan bacterivory in the lower Urdaibai estuary, Bay of Biscay

2008 ◽  
Vol 52 ◽  
pp. 273-282 ◽  
Author(s):  
A Iriarte ◽  
A Sarobe ◽  
E Orive
Keyword(s):  
Seasonal Variability ◽  
Bacterial Abundance ◽  
Bay Of Biscay ◽  
Urdaibai Estuary

Seasonal variability in gonad development in the sea urchin (Paracentrotus lividus) on the Basque coast (Southeastern Bay of Biscay)

2010 ◽  
Vol 61 (4-6) ◽  
pp. 259-266 ◽  
Author(s):  
Joxe Mikel Garmendia ◽  
Iratxe Menchaca ◽  
María Jesús Belzunce ◽  
Javier Franco ◽  
Marta Revilla
Keyword(s):  
Sea Urchin ◽  
Seasonal Variability ◽  
Gonad Development ◽  
Paracentrotus Lividus ◽  
Bay Of Biscay ◽  
Basque Coast

scholarly journals Vertical distribution and aggregation patterns of krill (Crustacea: Euphausiacea) in the Bay of Biscay: interannual and seasonal variability

2019 ◽  
Vol 97 (7) ◽  
pp. 619-630 ◽  
Author(s):  
M. Peña ◽  
R. González-Quirós ◽  
I. Munuera-Fernández ◽  
F. González ◽  
S. Romero-Romero ◽  
...  
Keyword(s):  
Vertical Distribution ◽  
Vertical Migration ◽  
Seasonal Variations ◽  
Seasonal Variability ◽  
Shelf Area ◽  
Bay Of Biscay ◽  
Acoustic Data ◽  
Epipelagic Zone ◽  
Acoustic Recording ◽  
The Vertical Distribution

Studies of krill (Crustacea: Euphausiacea) in oceanic waters of the Bay of Biscay are scarce and restricted to the epipelagic zone, overlooking vertical dynamics such as diurnal vertical migration (DVM). There is a growing interest in acoustically evaluating the biomass of krill in this area, but this requires a good knowledge of its vertical dynamics and aggregation patterns. In this work we employed acoustic data and net samples from two consecutive annual surveys covering a wide off-shelf area of the Bay of Biscay (JUVENA surveys of 2013 and 2014) and four seasonal surveys covering slope and oceanic waters in the Cantabrian Sea (SCAPA surveys of 2015). Vertical dynamics of krill were analyzed in the frame of the environmental seascape. High interannual and seasonal variations in the vertical distribution and aggregation patterns (small swarms, dense aggregations, or loose layers) of krill were observed. The vertical distribution covaried with dissolved oxygen and salinity. According to our findings, the best season to acoustically evaluate krill in the Bay of Biscay is spring, with the bulk of the biomass located above 600 m depth. Moreover, extending the acoustic recording beyond the epipelagic zone is mandatory for any season.

Seasonal variability of living benthic foraminifera from the outer continental shelf of the Bay of Biscay

2008 ◽  
Vol 59 (4) ◽  
pp. 297-319 ◽  
Author(s):  
Gérald Duchemin ◽  
Frans J. Jorissen ◽  
François Le Loc'h ◽  
Françoise Andrieux-Loyer ◽  
Christian Hily ◽  
...  
Keyword(s):  
Continental Shelf ◽  
Benthic Foraminifera ◽  
Seasonal Variability ◽  
Bay Of Biscay ◽  
Outer Continental Shelf
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