TY - JOUR
T1 - Relationship between environment and the occurrence of the deep-water rose shrimp Aristeus antennatus (Risso, 1816) in the Blanes submarine canyon (NW Mediterranean)
AU - Sardà, F.
AU - Company, J. B.
AU - Bahamón, N.
AU - Rotllant, G.
AU - Flexas, M. M.
AU - Sánchez, J. D.
AU - Zúñiga, D.
AU - Coenjaerts, J.
AU - Orellana, D.
AU - Jordà, G.
AU - Puigdefábregas, J.
AU - Sánchez-Vidal, A.
AU - Calafat, A.
AU - Martín, D.
AU - Espino, M.
PY - 2009/9
Y1 - 2009/9
N2 - We performed a multidisciplinary study characterizing the relationships between hydrodynamic conditions (currents and water masses) and the presence and abundance of the deep-water rose shrimp Aristeus antennatus in a submarine canyon (Blanes canyon in the NW Mediterranean Sea). This species is heavily commercially exploited and is the main target species of a bottom trawl fishery. Seasonal fluctuations in landings are attributed to spatio-temporal movements by this species associated with submarine canyons in the study area. Despite the economic importance of this species and the decreases in catches in the area in recent years, few studies have provided significant insight into the environmental conditions driving shrimp distribution. We therefore measured daily A. antennatus catches over the course of an entire year and analyzed this time series in terms of daily average temperature, salinity, mean kinetic energy (MKE), and eddy kinetic energy (EKE) values using generalized additive models and decision trees. A. antennatus was captured between 600 and 900 m in the Blanes canyon, depths that include Levantine Intermediate Water (LIW) and the underlying Western Mediterranean Deep Water (WMDW). The greatest catches were associated with relatively salty waters (38.5-38.6), low MKE values (6 and 9 cm2 s-2) and moderate EKE values (10 and 20 cm2 s-2). Deep-water rose shrimp occurrence appears to be driven in a non-linear manner by environmental conditions including local temperature. A. antennatus appears to prefer relatively salty (LIW) waters and low currents (MKE) with moderate variability (EKE).
AB - We performed a multidisciplinary study characterizing the relationships between hydrodynamic conditions (currents and water masses) and the presence and abundance of the deep-water rose shrimp Aristeus antennatus in a submarine canyon (Blanes canyon in the NW Mediterranean Sea). This species is heavily commercially exploited and is the main target species of a bottom trawl fishery. Seasonal fluctuations in landings are attributed to spatio-temporal movements by this species associated with submarine canyons in the study area. Despite the economic importance of this species and the decreases in catches in the area in recent years, few studies have provided significant insight into the environmental conditions driving shrimp distribution. We therefore measured daily A. antennatus catches over the course of an entire year and analyzed this time series in terms of daily average temperature, salinity, mean kinetic energy (MKE), and eddy kinetic energy (EKE) values using generalized additive models and decision trees. A. antennatus was captured between 600 and 900 m in the Blanes canyon, depths that include Levantine Intermediate Water (LIW) and the underlying Western Mediterranean Deep Water (WMDW). The greatest catches were associated with relatively salty waters (38.5-38.6), low MKE values (6 and 9 cm2 s-2) and moderate EKE values (10 and 20 cm2 s-2). Deep-water rose shrimp occurrence appears to be driven in a non-linear manner by environmental conditions including local temperature. A. antennatus appears to prefer relatively salty (LIW) waters and low currents (MKE) with moderate variability (EKE).
UR - https://www.scopus.com/pages/publications/70449525573
U2 - 10.1016/j.pocean.2009.07.001
DO - 10.1016/j.pocean.2009.07.001
M3 - Artículo
AN - SCOPUS:70449525573
SN - 0079-6611
VL - 82
SP - 227
EP - 238
JO - Progress in Oceanography
JF - Progress in Oceanography
IS - 4
ER -