TY - GEN
T1 - Acoustic estimation of Pacific sardine biomass in the Gulf of California during the spring 2008¿2012
AU - Villalobos, Hector
AU - Nevarez Martinez, Manuel O.
AU - Santos-Molina, Jose Pablo
AU - Gonzalez-Maynez, Violeta E.
AU - De Los Angeles Martinez-Zavala, Ma
AU - Hermand, Jean Pierre
AU - Brehmer, Patrice
PY - 2013
Y1 - 2013
N2 - It is necessary to refine the acoustic estimation method applied in the Gulf of California, especially regarding the acoustic energy allocation to the different species coexisting in the same area, in order to produce a more precise and reliable fishery independent biomass index for the sustainable management of the fishery. The series of acoustic surveys carried out in this work are the first systematic attempts to estimate Pacific sardine biomass in the Gulf of California. Due to similar acoustic reflectivity of other pelagic species, we need to refine the allocation of acoustic energy to species. From 2012, besides the 38 kHz transducer another frequency has been incorporated (120 kHz) in the surveys. With both frequencies we will apply acoustic signal filtering procedures in order to 1). Discriminate zooplankton echoes from fish echoes and 2). Investigate the possibility to better discriminate the Pacific sardine from other species.
AB - It is necessary to refine the acoustic estimation method applied in the Gulf of California, especially regarding the acoustic energy allocation to the different species coexisting in the same area, in order to produce a more precise and reliable fishery independent biomass index for the sustainable management of the fishery. The series of acoustic surveys carried out in this work are the first systematic attempts to estimate Pacific sardine biomass in the Gulf of California. Due to similar acoustic reflectivity of other pelagic species, we need to refine the allocation of acoustic energy to species. From 2012, besides the 38 kHz transducer another frequency has been incorporated (120 kHz) in the surveys. With both frequencies we will apply acoustic signal filtering procedures in order to 1). Discriminate zooplankton echoes from fish echoes and 2). Investigate the possibility to better discriminate the Pacific sardine from other species.
KW - Gulf of California
KW - Pacific sardine biomass
KW - acoustic energy allocation
KW - acoustic estimation method
KW - fishery
UR - http://www.scopus.com/inward/record.url?scp=84893341848&partnerID=8YFLogxK
U2 - 10.1109/RIOAcoustics.2013.6683996
DO - 10.1109/RIOAcoustics.2013.6683996
M3 - Contribución a la conferencia
AN - SCOPUS:84893341848
SN - 9781479903627
T3 - 2013 IEEE/OES Acoustics in Underwater Geosciences Symposium, RIO Acoustics 2013
BT - 2013 IEEE/OES Acoustics in Underwater Geosciences Symposium, RIO Acoustics 2013
PB - IEEE Computer Society
T2 - 2013 IEEE/OES Acoustics in Underwater Geosciences Symposium, RIO Acoustics 2013
Y2 - 26 July 2013 through 28 July 2013
ER -