Sebastes fasciatus abundance and associated seabed environmental conditions in a Vazella pourtalesii sponge ground in the Sambro Bank (Scotian Shelf)

The genus Sebastes is a morphologically and ecologically diverse genus of rockfish characterized by high longevity, late-maturity, and low natural mortality. On the northwest Atlantic continental shelf, the Acadian redfish (Sebastes fasciatus) is the most common rockfish species above 300 m depth. T...

Full description

Bibliographic Details
Main Authors: Grinyó, Jordi, Aguzzi, Jacopo, Kenchington, Ellen L, Costa, Corrado, Hanz, Ulrike, Mienis, Furu
Format: Dataset
Language:English
Published: PANGAEA 2023
Subjects:
behavior
benthic lander
Current direction
current velocity
DATE/TIME
Deep-sea Sponge Grounds Ecosystems of the North Atlantic
Identification
Lander
Multiparametric video-lander
ALBEX
coupled with CTD sensor
Sea-Bird [SBE37SM-RS232]
Oxygen
dissolved
Oxygen concentration
Salinity
Sambro_Bank
Scotian Shelf
Sebastes fasciatus
Sponge Conservation Areas (SCAs)
sponge grounds
SponGES
Temperature
water
Velocity
Visual analysis (video)
North Atlantic
Northwest Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.962464
https://doi.org/10.1594/PANGAEA.962464
Description
Summary:The genus Sebastes is a morphologically and ecologically diverse genus of rockfish characterized by high longevity, late-maturity, and low natural mortality. On the northwest Atlantic continental shelf, the Acadian redfish (Sebastes fasciatus) is the most common rockfish species above 300 m depth. This species has been widely exploited resulting in the depletion or collapse of most of its stocks. Management of long-lived species with intricate life-history characteristics is challenging and requires highly integrated biological and oceanographic monitoring, which allow the identification of environmental drivers and demographic and behavioural trends. The present study uses high temporal resolution imaging and environmental data, acquired with an autonomous lander deployed for 10-months at the Sambro Bank Sponge Conservation Area (Scotian Shelf) to elucidate S. fasciatus temporal dynamics and behavioural trends in response to near-bed environmental conditions. S. fasciatus, mostly displayed passive locomotion and static behaviours, in common with other shelf-dwelling Sebastes species. Hydrodynamics appear to act as a synchronizing factor conditioning its swimming behaviour. S. fasciatus total counts exhibited a seasonal shift in rhythm's phase likely reflecting changes in lifestyle requirements.

Similar Items