The variability of the sea surface salinity measurements provided by the Soil Moisture and Ocean Salinity mission reveals the presence of a local salinity maximum(a salty tongue)in the northwestern tropical Atlantic.T...The variability of the sea surface salinity measurements provided by the Soil Moisture and Ocean Salinity mission reveals the presence of a local salinity maximum(a salty tongue)in the northwestern tropical Atlantic.The sea surface salinity positive anomaly starts increasing in July,reaches its maximum in January,and then disappears.The local maximum of salinity appears in the late boreal autumn/winter,when the Amazon discharge is minimal and the salty water from the South Atlantic is transported by the North Brazil Current along the shelf break across the equator.The authors validate the satellite observations in this area and assess the vertical structure of the salinity maximum by using in situ measurements and an in situ-interpolated product.展开更多
The main objective of this study is to provide,for the first time,fisheries-dependent,spatially explicit information on the activity for the black scabbard fish(Aphanopus carbo)longline fleet operating off the Portugu...The main objective of this study is to provide,for the first time,fisheries-dependent,spatially explicit information on the activity for the black scabbard fish(Aphanopus carbo)longline fleet operating off the Portuguese coast.Fisheries monitoring data were analysed,covering the period 2014–2016,aiming at identifying deep-sea fishing grounds,gaining a better understanding of the fleet spatial dynamics,quantifying fishing effort and providing information on the species distribution and abundance.E-logbooks were used to define general patterns of fishing activity,while the combined analysis of Vessel Monitoring System(VMS)and Automatic Identification System(AIS)data allowed to spatially identify fishing trips and define haul-back trajectories corresponding to fishing events.A total of 19 vessels were found to be involved in this fishery,mainly operating at depths from 1000 to 1500 m,landing the black scabbard fish in two main ports located in the centre and three secondary ports in the northern region.Fishing effort and catch per unit of effort(CPUE)were estimated and mapped for the period in study and the geographic extension of the fishery in the Portuguese continental slope was highlighted.Vessels keep their activity spatially restricted,in a clear strategy to avoid competition;their areas of activity are contiguous and generally related to the closest port.Some recommendations are drawn in support of a continuous monitoring programme for this fishery.展开更多
Correction:Marine Life Science&Technology https://doi.org/10.1007/s42995-024-00248-8 In this article the name of author Luciane M.Perazzolo was incompletely written as Luciane Perazzolo.
基金financed by the Funda?ao para a Ciencia e a Tecnologia(FCT)through the project UIDP/04292/2020(https://doi.org/10.54499/UIDP/04292/2020)UIDB/04292/2020(https://doi.org/10.54499/UIDB/04292/2020)+2 种基金awarded to MARE and through project LA/P/0069/2020(https://doi.org/10.54499/LA/P/0069/2020)granted to the Associate Laboratory ARNETfunded by the European Space Agency through the SMOS Expert Support Laboratory(ESL)for SMOS Level 2 over land,ocean,ice[4000130567/20/I-BG]MCIN/AEI/10.13039/501,100,011,033 through the project INTERACT[PID2020-114623RB-C31]。
文摘The variability of the sea surface salinity measurements provided by the Soil Moisture and Ocean Salinity mission reveals the presence of a local salinity maximum(a salty tongue)in the northwestern tropical Atlantic.The sea surface salinity positive anomaly starts increasing in July,reaches its maximum in January,and then disappears.The local maximum of salinity appears in the late boreal autumn/winter,when the Amazon discharge is minimal and the salty water from the South Atlantic is transported by the North Brazil Current along the shelf break across the equator.The authors validate the satellite observations in this area and assess the vertical structure of the salinity maximum by using in situ measurements and an in situ-interpolated product.
文摘The main objective of this study is to provide,for the first time,fisheries-dependent,spatially explicit information on the activity for the black scabbard fish(Aphanopus carbo)longline fleet operating off the Portuguese coast.Fisheries monitoring data were analysed,covering the period 2014–2016,aiming at identifying deep-sea fishing grounds,gaining a better understanding of the fleet spatial dynamics,quantifying fishing effort and providing information on the species distribution and abundance.E-logbooks were used to define general patterns of fishing activity,while the combined analysis of Vessel Monitoring System(VMS)and Automatic Identification System(AIS)data allowed to spatially identify fishing trips and define haul-back trajectories corresponding to fishing events.A total of 19 vessels were found to be involved in this fishery,mainly operating at depths from 1000 to 1500 m,landing the black scabbard fish in two main ports located in the centre and three secondary ports in the northern region.Fishing effort and catch per unit of effort(CPUE)were estimated and mapped for the period in study and the geographic extension of the fishery in the Portuguese continental slope was highlighted.Vessels keep their activity spatially restricted,in a clear strategy to avoid competition;their areas of activity are contiguous and generally related to the closest port.Some recommendations are drawn in support of a continuous monitoring programme for this fishery.
文摘Correction:Marine Life Science&Technology https://doi.org/10.1007/s42995-024-00248-8 In this article the name of author Luciane M.Perazzolo was incompletely written as Luciane Perazzolo.
