scholarly journals Influence of mussel aquaculture on the distribution of vagile benthic macrofauna in îles de la Madeleine, eastern Canada

2015 ◽  
Vol 6 (2) ◽  
pp. 175-183 ◽  
Author(s):  
A Drouin ◽  
P Archambault ◽  
B Clynick ◽  
K Richer ◽  
CW McKindsey
Keyword(s):  
Benthic Macrofauna ◽  
Eastern Canada ◽  
La Madeleine

scholarly journals Low benthic impact of an offshore mussel farm in Îles-de-la-Madeleine, eastern Canada

2018 ◽  
Vol 10 ◽  
pp. 473-485 ◽  
Author(s):  
É Lacoste ◽  
A Drouin ◽  
AM Weise ◽  
P Archambault ◽  
CW McKindsey
Keyword(s):  
Eastern Canada ◽  
La Madeleine ◽  
Mussel Farm

Seasonal diving and foraging behaviour of Eastern Canada-West Greenland bowhead whales

2020 ◽  
Vol 643 ◽  
pp. 197-217 ◽  
Author(s):  
SME Fortune ◽  
SH Ferguson ◽  
AW Trites ◽  
B LeBlanc ◽  
V LeMay ◽  
...  
Keyword(s):  
Climate Change ◽  
Late Summer ◽  
Calanoid Copepods ◽  
Eastern Canada ◽  
West Greenland ◽  
Bowhead Whales ◽  
Seasonal Movement ◽  
Dive Behaviour ◽  
Calanus Glacialis ◽  
Canada West

Climate change may affect the foraging success of bowhead whales Balaena mysticetus by altering the diversity and abundance of zooplankton species available as food. However, assessing climate-induced impacts first requires documenting feeding conditions under current environmental conditions. We collected seasonal movement and dive-behaviour data from 25 Eastern Canada-West Greenland bowheads instrumented with time-depth telemetry tags and used state-space models to examine whale movements and dive behaviours. Zooplankton samples were also collected in Cumberland Sound (CS) to determine species composition and biomass. We found that CS was used seasonally by 14 of the 25 tagged whales. Area-restricted movement was the dominant behaviour in CS, suggesting that the tagged whales allocated considerable time to feeding. Prey sampling data suggested that bowheads were exploiting energy-rich Arctic copepods such as Calanus glacialis and C. hyperboreus during summer. Dive behaviour changed seasonally in CS. Most notably, probable feeding dives were substantially shallower during spring and summer compared to fall and winter. These seasonal changes in dive depths likely reflect changes in the vertical distribution of calanoid copepods, which are known to suspend development and overwinter at depth during fall and winter when availability of their phytoplankton prey is presumed to be lower. Overall, CS appears to be an important year-round foraging habitat for bowheads, but is particularly important during the late summer and fall. Whether CS will remain a reliable feeding area for bowhead whales under climate change is not yet known.

La Madeleine de Vézelay. Notes sur la façade de la nef

1940 ◽  
Vol 99 (2) ◽  
pp. 223-237
Author(s):  
Francis Salet
Keyword(s):  
La Madeleine
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